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Cambridge Marks LGBT+ History Month 2022 With Calendar of Events

source: www.cam.ac.uk

 

Activities and events are taking place across the University and Colleges to mark LGBT+ History Month at Cambridge, along with online campaigns, podcasts and articles produced by students and staff.

 

This LGBT+ History Month we take stock and reflect on our past, while remembering that our long march to equality is far from over.

Dr Duncan Astle, Chair of the LGBT+ staff network

LGBT+ History Month takes place every February to promote equality and increase the visibility of lesbian, gay, bisexual and transgender people, their history, lives and their experiences.

At Cambridge, sexuality and gender will be explored through poetry, politics, art and archaeology – with a blend of online and in-person events.

Dr Duncan Astle, Chair of the LGBT+ staff network at the University, said: “Every LGBT+ History Month we recognise the progress made towards equality and highlight the injustice that persists. Across the UK there has been a substantial rise in homo-, bi- and transphobic hate crime, fuelled by a widespread campaign of misinformation. Transphobic hate crime in particular has quadrupled over the past five years.

“This LGBT+ History Month we take stock and reflect on our past, while remembering that our long march to equality is far from over. With so many events across Cambridge, in person and online, there are more ways than ever for people to get involved.”

This year’s LGBT+ History Month events include:

Shon Faye in Conversation with Christine Burns

5pm-7pm, Tuesday 1 February
Online event

Shon Faye in conversation with Christine Burns about her new book The Transgender Issue: An Argument for Justice. The event is being hosted by the University of Cambridge Students’ Union LGBT Campaign, and multidisciplinary network for LGBTQ+ research, lgbtQ+@cam.

For more information, click here.

In Conversation with Yasmin Benoit – hosted by The Beard Society

5pm-6.30pm, Tuesday 8 February
Upper Hall, Peterhouse

Writer, model, activist, and the creator of #ThisIsWhatAsexualLooksLike Yasmin Benoit will be talking about her experiences in the LGBTQ+ community, her work as an activist in increasing visibility and educating people on asexuality and aromanticism, and how her sexuality has informed her modelling career.

For more information, click here.

Overlapping Activisms

5pm-6.30pm, Tuesday 8 February
Online event

Solidarity among activist movements can be an incredible force for good – but it’s not automatic or easy. Is feminism in conflict with queer and trans activism? Is there a tension between identity politics and class politics? Come to this panel discussion to hear three activists take a long view on the overlaps of the queer movement with other forms of activism. Speakers: Tamsin Omond, Nicola Field.

For more information, click here.

 

Religious Art, Queer Possibility

1.15pm-2pm, Wednesday 9 February
Online event

Using works from the Fitzwilliam Museum collection, this online talk will explore how Western European religious painting was embraced and transformed by women and queer artists working in the 19th and 20th century in Britain.

For more information, click here.

 

#LivefromLucy: LGBTQ+ Inclusion at Universities: Testimonies and Recommendations from the ‘Out at Cambridge’ Study with Elisabeth Sandler

6pm-7pm, Wednesday 16 February
Online event

Based on participants’ narratives from the ‘Out at Cambridge’ study (2019), Elisabeth Sandler will discuss the importance of LGBTQ+ inclusion at universities, and what universities and Cambridge colleges can do to create more LGBTQ+ welcoming spaces.

For more information, click here.

Queer Necropoetics

6pm-7pm, Thursday 17 February
Online event

A panel with scholars Lee Colwill (University of Cambridge) and Patricia MacCormack (Anglia Ruskin University) on the subject of varying representations and poetics surrounding queer death.

For more information, click here.

 

Gabriela Oré Menéndez: Redefining (my) archaeological practice through queer lenses

5pm-6.30pm, Tuesday 22 February
Online event

Co-organised by the University of Cambridge Archaeological Field Club, the Department of Archaeology’s annual LGBT+ History Month event explores the topics of sexuality, gender and archaeological practice.

For more information, click here.

LQW Presents: LGBTQ+ History Month Poetry Takeover

7.30pm, Thursday 24 February
Cinema Bar – Arts Picturehouse, Cambridge

Join us for a friendly evening of poetry and spoken word celebrating queer history, in collaboration with LondonQueerWriters. With featured poets and eight open mic slots, this is an inclusive event offering a safe space to platform and celebrate LGBTQIA+ poets and spoken word artists. Come down for a night of queer community, speak your truth or just to listen and soak up the vibes.

For more information, click here.

 

University LGBT+ History Month Lecture

Monday 28 February
More details soon

 

Also happening:

Winning Together – with Helen Richardson-Walsh

6.30pm, Thursday 3 February
Anglia Ruskin University, East Road

In this ARU Excellence in Sport lecture, Helen Walsh shares learnings from her 18-year career with GB hockey, which culminated in Olympic gold.

For more information, click here.

Livestreamed book launch for Outrageous!

7.30pm, Monday 7 February
Online event

Writer and academic Paul Baker discusses the story of Section 28 and Britain’s battle for LGBT education.

For more information, click here.

 

That which never can be suppressed: LGBTQ+ history in the RCP collections

6pm-7pm, Thursday 17 February
Online event

Exploring queer history through the Royal College of Physicians’ archives.

For more information, click here.

For the full line-up of events across Cambridgeshire during LGBT+ History Month, visit: http://encompassnetwork.org.uk/history-month/


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Live Cells Discovered In Human Breast Milk Could Aid Breast Cancer Research

Breast milk in bottles
source: www.cam.ac.uk

 

Researchers have explored the cellular changes that occur in human mammary tissue in lactating and non-lactating women, offering insight into the relationship between pregnancy, lactation, and breast cancer.

 

We hope this finding will enable future studies into the early steps of breast cancer

Walid Khaled

The study was led by researchers from the Wellcome-MRC Cambridge Stem Cell Institute (CSCI) and the Department of Pharmacology at the University of Cambridge.

Breast tissue is dynamic, changing over time during puberty, pregnancy, breastfeeding, and aging. The paper, published today in the journal Nature Communications, focuses on the changes that take place during lactation by investigating cells found in human milk.

This research, led by Dr Alecia-Jane Twigger of CSCI, found that the cells in milk, once thought to be dead or dying, are in fact very much alive. These living cells provide researchers with the chance to study not only the changes that occur in mammary tissues during lactation, but also insight into a potential early indicator of future breast cancer development.

“I believe that by studying human milk cells, we will be able to answer some of the most fundamental questions around mammary gland function such as: how is milk produced? Why do some women struggle to make milk? and what strategies can be employed to improve breastfeeding outcomes for women?” said Dr Alecia-Jane Twigger at the Wellcome-MRC Cambridge Stem Cell Institute who led the study.

The researchers collected voluntary breast milk samples from lactating women, as well as samples of non-lactating breast tissue donated from women who elected to have aesthetic breast reduction surgery. Using single-cell RNA sequencing analysis, the team conducted a novel comparison of the composition of the mammary cells taken using these two methods, identifying the distinctions between lactating and non-lactating human mammary glands.

While accessing breast tissue for study relies on donors already undergoing surgery, breast milk samples are much simpler to acquire. Breast milk donors are engaged via midwives or women’s networks (an undertaking made more challenging by the pandemic) and agree to share their samples over time. Typical daily production for lactating women is between 750-800ml, and the sample size for Twigger’s research is on average a mere 50ml, an amount which can contain hundreds of thousands of cells for study.

By collecting these samples donated by breastfeeding women – samples now known to contain living and viable cells – researchers have the opportunity to capture dynamic cells in a non-invasive way. This greater ease of access to breast cells can open the door to more studies on women’s health in the future.

“The first time Alecia told me that she found live cells in milk I was surprised and excited about the possibilities. We hope this finding will enable future studies into the early steps of breast cancer,” said Dr Walid Khaled, at the Wellcome-MRC Cambridge Stem Cell Institute and University of Cambridge’s Department of Pharmacology, who was also involved in the study.

This paper and its findings are part of the Human Breast Cell Atlas project funded by the MRC.

This research was funded by the MRC, BBSRC and Wellcome-MRC Cambridge Stem Cell Institute.

Reference: Twigger, A., et al.: ‘Transcriptional changes in the mammary gland during lactation revealed by single cell sequencing of cells from human milk.’ Nature Communications, Jan 2022. DOI: 10.1038/s41467-021-27895-0


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Cambridge Scientists Get £22.5 Million Boost From Cancer Research UK

CRUK Cambridge Institute
source: www.cam.ac.uk

 

Cambridge scientists are set to receive a major cash injection from Cancer Research UK.

 

This investment means we will be able to further develop our work in translational research – getting cutting-edge discoveries from the laboratory to patients and learning as much as possible from patients to initiate new research

Richard Gilbertson

The Cancer Research UK Cambridge Centre will receive around £22.5 million over the next five years as part of the development of a unique chain of cutting-edge research hubs around the UK.

The money will be used to accelerate work into diagnosing a wide range of cancers in children and adults at a much earlier stage, including pancreatic, ovarian and children’s cancers. The funding will support the development of the Centre’s Advanced Imaging capability, enabling scientists to look inside cancer cells in more detail than ever before and find the physical features that could be vulnerable to new treatments.

Professor Richard Gilbertson, Director at the Cancer Research UK Cambridge Centre, said: “We’ve had a challenging year and COVID-19 has slowed us down. But we will not stop working hard to find new treatments for cancer, and this investment will give us the tools we need to deliver high quality research that will make the biggest difference for patients.

“This investment means we will be able to further develop our work in translational research – getting cutting-edge discoveries from the laboratory to patients and learning as much as possible from patients to initiate new research.”

Cambridge has been chosen as one of just seven locations to secure funding in the latest review of the Cancer Research UK Centres network of excellence. These are world-class research centres that draw together leading research and medical expertise to drive the best possible results for cancer patients.

Every year around 37,300 people are diagnosed with cancer in the East of England.*

Dr Iain Foulkes, Executive Director of Research and Innovation at Cancer Research UK, said: “This past year proves, more than any other, the value of investing in science and medical research, and what can be achieved with collective focus and collaboration. Just like science is our route out of the pandemic, science is our route to beating cancer.

“Despite the impact of the pandemic on the charity’s income, we’re funding some of the best and most promising research in Cambridge to help more people survive.

“Survival rates have doubled since the early 1970s and Cancer Research UK’s work has been at the heart of that progress. Every step our doctors, nurses and scientists take relies on every pound raised through fundraising, and they need support now more than ever.

“Our determination to beat cancer hasn’t faltered and we’re even more focussed on our ambition of seeing three in four people survive their cancer by 2034. One in two of us will get cancer in our lifetimes and all of us can support the research that will beat it.”

Meet the women helping to chance the story of ovarian cancer

Adapted from a press release from Cancer Research UK


In Cambridge Cancer Research UK spent over £51 million in 2020/21 on life-saving research
  • Professor Richard Gilbertson is seeking to improve survival for children with brain tumours. So far, he and his team have found that childhood brain tumours are not a single disease. Now, they want to study the biology in even more detail. Their research will help to match new treatments to the biology of a child’s brain tumour.
  • Professor Rebecca Fitzgerald is pioneering new ways to detect oesophageal cancer early. She developed the cytosponge, a “sponge on a string” pill that detects 10 times more cases of Barrett’s oesophagus (a condition that can sometimes lead to oesophageal cancer) compared with routine GP care. The cytosponge is now licensed for use in NHS Scotland, helping tackle backlogs in cancer care caused by the pandemic.
  • Dr Daniel Munoz-Espin is investigating the role of senescence caused by chemotherapy in lung cancer. He is hoping to find a way to prevent cancer cells slipping into this sleep-like state, allowing the cancer to be fully eradicated.

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The text in this work is licensed under a Creative Commons Attribution 4.0 International License. Images, including our videos, are Copyright ©University of Cambridge and licensors/contributors as identified.  All rights reserved. We make our image and video content available in a number of ways – as here, on our main website under its Terms and conditions, and on a range of channels including social media that permit your use and sharing of our content under their respective Terms.

Letter to the Rector of Heidelberg University

source: www.cam.ac.uk

 

Letter from Vice-Chancellor Professor Stephen J Toope to the Rector of Heidelberg University, Professor Dr h.c. Bernhard Eitel.

 

Professor Dr Dr h.c. Bernhard Eitel
Rektor
Universität Heidelberg

By email

25 January 2022

Dear Bernhard,

I write on behalf of the entire Cambridge community to express our profound shock and sorrow following the tragic events on the Im Neuenheimer Feld campus.

Our immediate thoughts are with the relatives, friends and colleagues of all the victims of yesterday’s senseless act of violence.

Please accept our most sincere expression of solidarity at this moment of grief. The Heidelberg community is strong and I am sure that you will find ways to honour the victims and reaffirm your common purpose in the face of tragedy.

Yours sincerely,

Professor Stephen J Toope

Vice-Chancellor
University of Cambridge

 

 


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The text in this work is licensed under a Creative Commons Attribution 4.0 International License. Images, including our videos, are Copyright ©University of Cambridge and licensors/contributors as identified.  All rights reserved. We make our image and video content available in a number of ways – as here, on our main website under its Terms and conditions, and on a range of channels including social media that permit your use and sharing of our content under their respective Terms.

Faulty BRCA Genes Linked To Prostate and Pancreatic Cancers

Prostate cancer cells
source: www.cam.ac.uk

 

Faulty versions of the BRCA1 and BRCA2 genes are well known to increase the risk of breast cancer in men and women, and in ovarian cancer. Now BRCA1 and BRCA2 have been linked to several other cancers, including those that affect men.

 

These large datasets of patients have allowed us to estimate with much greater accuracy the extent to which faulty BRCA1 and BRCA2 genes increase the risk of several cancers

Antonis Antoniou

A study published today in the Journal of Clinical Oncology has provided the strongest evidence to date of these links and helped researchers estimate more accurately the associated risk.

Since these genes were discovered in the mid 90s, numerous studies have explored possible links between BRCA1 and BRCA2 mutations and other cancers. However, these studies had small sample sizes, resulting in imprecise estimates of cancer risk. Being able to estimate the risks accurately is important for informing cancer prevention and screening strategies and providing genetic counselling to those at greatest risk. BRCA mutations are uncommon, affecting around 1 in 300-400 people in the population.

To further investigate these risk estimates, a team led by researchers at the University of Cambridge, funded by Cancer Research UK, analysed data from almost 3,200 families with one or more members with the BRCA1 mutation and almost 2,200 families with members carrying the BRCA2 mutation. The families had all been recruited to the Consortium of Investigators of Modifiers of BRCA1/2. The researchers examined the associations with 22 primary cancers.

From the data, the researchers estimated that men who carry a BRCA2 mutation have a 27% risk of developing prostate cancer by the time they are 80 years old, more than double the rate compared to non-carriers. BRCA1 mutations were not associated with an increase in prostate cancer risk.

Carrying a defective copy of either BRCA1 or BRCA2 more than doubled an individual’s risk of pancreatic cancer to 2.5-3% by age 80.

The mutations were also found to increase the risk of stomach cancer, though the researchers caution that because of the rarity of this form of cancer, the number of patients in their datasets was small.

Mutations in both genes significantly increased the risk of breast cancer in men, though the disease is still very rare, accounting for less than 1% of all male cancer cases in the UK. While a BRCA1 mutation increased a man’s risk of developing breast cancer more than four-fold to 0.4% by age 80, a BRCA2 mutation increased this risk by 44 times to 3.8% by age 80. It is estimated that 38 out of 1,000 male carriers of the BRCA2 mutation will develop breast cancer by age 80.

The researchers were unable to find compelling evidence that mutations were linked to increased risk of some other cancers which were previously thought to be linked to faulty BRCA genes, such as melanoma.

Cancer Research UK says that people who are worried about their risk of cancer should talk to their GP. GPs can refer patients to a genetics clinic if they think someone has a strong family history and might be at an increased risk.

Professor Antonis Antoniou from the Department of Public Health and Primary Care at the University of Cambridge, who led the research, said: “These large datasets of patients have allowed us to estimate with much greater accuracy the extent to which faulty BRCA1 and BRCA2 genes increase the risk of several cancers. We’ve known for some time that they’re linked to breast and ovarian cancer, but there’s been uncertainty about other cancers.”

Professor Marc Tischkowitz from the Department of Medical Genetics at the University of Cambridge added: “The link between BRCA2 and prostate cancer and pancreatic cancer is now much clearer, thanks to the data we’ve analysed. We have also identified a potential link with stomach cancer, but this is based on small numbers and needs further study. Our data suggests that there is no strong link between BRCA2 and melanoma, which may provide greater clarity to BRCA2 gene carriers.

“Overall, the results will add to our knowledge on optimising cancer screening and early detection strategies for people who are known to carry these faulty genes.”

Michelle Mitchell, Chief Executive of Cancer Research UK, said: “Our scientists helped to discover BRCA over 25 years ago and established that faults in these genes increase breast cancer risk. This study has built on that vital knowledge, giving us some important new insights into BRCA genes and the likely risks of developing prostate and pancreatic cancer.

“Cancers caused by inherited faulty BRCA genes are relatively rare, and other factors like age, smoking, diet and other preventable factors contribute to a person’s risk.

“Improving our understanding of how faults in our genes are associated with certain cancers puts us in a much better position to pinpoint those at a higher risk of developing cancer.”

Reference
Li, S et al. Cancer Risks Associated With BRCA1 and BRCA2 Pathogenic Variants. Journal of Clinical Oncology; 25 Jan 2022; DOI: 10.1200/JCO.21.02112


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The text in this work is licensed under a Creative Commons Attribution 4.0 International License. Images, including our videos, are Copyright ©University of Cambridge and licensors/contributors as identified.  All rights reserved. We make our image and video content available in a number of ways – as here, on our main website under its Terms and conditions, and on a range of channels including social media that permit your use and sharing of our content under their respective Terms.

New Research Centre To Develop Next-Generation Battery Technologies

Department of Materials Science and Metallurgy
source: www.cam.ac.uk

 

A newly-established Cambridge research centre will work to develop next-generation batteries and battery materials, one of the major technological hurdles in the transition to a zero-carbon economy.

 

The WP-Cambridge Materials Innovation Centre (WP-CAMMIC) will be based at Cambridge’s Department of Materials Science & Metallurgy (DMSM), supported by £7.2 million from the WP Investment Company (WPIC), a South Korean investment group.

Over the next five years, the funding will support the acquisition of state-of-the-art equipment, funding for PhD students and postdoctoral researchers to carry out research in lithium-based energy storage technologies. The Centre will also focus on sustainable manufacturing and the circular economy, including recycling to develop battery materials with enhanced properties.

“Sustainable energy storage is in the heart of powering a low-carbon future, including electric vehicle batteries and other applications in renewable energy development,” said Dr Lei Wang, Chair of WPIC and alumnus of the Cambridge Judge Business School. “We are excited to support the establishment and development of the WP-CAMMIC, and look forward to it growing into a centre with a global impact on sustainability.”

“The development of sustainable energy systems and applications is a key focus of WPIC,” said Tiffany Park, co-Chair of WPIC. “We are keen on pursuing new technologies through WP-CAMMIC to produce next-generation batteries that can keep pace with the speed of electrification in transportation.”

“Through the partnership with WP-CAMMIC, our researchers will design materials that enable new battery chemistries, use state-of-the-art techniques to gain new insight into their functionality, and develop new manufacturing methods to accelerate developments in batteries,” said Manish Chhowalla, Goldsmiths’ Professor of Materials Science in the DMSM, and Director of the new Centre.

Professor Ramachandran Vasant Kumar, a leading figure in the recycling of batteries, is co-investigator for the new Centre. He said: “Building on the momentum generated over years of research on sustainable energy materials, this WPIC-funded project will use a holistic approach of how batteries are made, used and recycled.”

“New battery technology is a vital part of the transition to a zero-carbon economy,” said Professor Jason Robinson, joint Head of the DMSM. “This exciting initiative will further strengthen energy materials research in the Department, and the relationship with WPIC will be beneficial for both parties as we work to build a more sustainable future.”

For more information on energy-related research in Cambridge, please visit Energy IRC, a University-wide Interdisciplinary Research Centre that links the activities of over 250 academics working in energy research across 30 departments and faculties. 


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Cambridge partners with Schmidt Futures in new software engineering network

Cambridge partners with Schmidt Futures in new software engineering network

Centre for Mathematical Sciences
Centre for Mathematical Sciences Credit: Sir Cam

 

Software engineers will bridge the gap between modern science and scalable complex software at four leading universities.

 

The Institute of Computing for Climate Science will be the first of its kind, supporting the application of the latest developments in computer science and data science to climate modelling

Emily Shuckburgh

Schmidt Futures and partner institutions announce the establishment of the Virtual Institute of Scientific Software (VISS), starting with a network of four centres based at the University of Cambridge, Georgia Institute of Technology, the Johns Hopkins University and the University of Washington.

This interdisciplinary virtual institute will address the growing demand for software engineers with backgrounds in science, complex data and mathematics who can build dynamic, scalable, open software to facilitate accelerated scientific discovery across fields.

While science has become increasingly reliant on complex programming and technology, many researchers lack the training or experience in software engineering, tools and methods to produce effective, reliable, and scalable solutions. As a result, successful research and scientific discovery is sometimes delayed as researchers looking to conduct further experiments struggle to adapt unstable and outdated programming.

VISS seeks to improve the quality of research, accelerate advancements and encourage scalable open-source solutions by providing scientific researchers with access to full-time professional engineers and state of the art technology to develop high quality, maintainable and adaptable software.

“Schmidt Futures’ Virtual Institute for Scientific Software will accelerate the pace of scientific discovery through the development of robust, well-engineered software, supporting longer-term platforms and systems, encouraging best practices in open science, and providing access to techniques such as high-end computing, massive databases, and machine learning,” said Elizabeth McNally, Executive Vice President, Schmidt Futures.

Cambridge’s Institute of Computing for Climate Science (ICCS) will apply its existing expertise in climate sciences and artificial intelligence with the research teams from Schmidt Futures’ Virtual Earth Systems Research Institute (VESRI) to address the specific computation and research software needs in the area of climate modelling.

The centre represents a collaboration between Cambridge Zero, the Departments of Computer Science and TechnologyApplied Mathematics and Theoretical Physics, and University Information Services. The other three centres will be dedicated to a range of scientific focus areas, including astrophysics, life sciences, engineering and climate.

“With this truly visionary new institute, Cambridge will blend its world-leading climate science, software engineering and computer science expertise,” said Vice-Chancellor, Professor Stephen J Toope. “This interdisciplinary powerhouse will enable the development of next-generation climate models. We are delighted to be partnering with Schmidt Futures and engaging with the international research community to inform the response to our most urgent global challenge.”

The ICCS will be led by Emily Shuckburgh (Academic Director; Cambridge Zero), Dominic Orchard (Co-Director; Computer Science/Software Engineering), Chris Edsall (Co-Director; Engineering), and Colm-cille Caulfield (Co-Director; Science). All have a long-term research agenda to improve understanding of our changing climate through the development, implementation, maintenance, and dissemination of models for scientific computing, data assimilation and analysis.

Being part of the University, ICCS will also have a significant education and training component, through the commitment towards sharing its scientific insights openly and broadly. ICCS will play a key role in Cambridge Zero, the University’s climate change initiative, that is identifying routes to the creation of a sustainable, zero-carbon future for all.

Over the coming months, ICCS will build a team of researchers and software engineers who share the vision of the power of modern computer science, data science and software engineering for addressing the pressing challenges of our changing climate.

Director of Cambridge Zero and Academic Director of ICCS, Dr Emily Shuckburgh, said “The Institute of Computing for Climate Science will be the first of its kind, supporting the application of the latest developments in computer science and data science to climate modelling. It is tremendously exciting to launch this Institute, which will be the core of an international network of climate research initiatives supported by Schmidt Futures, and will help drive forwards the frontiers of climate science.”

The interdisciplinary network of centres, which will benefit from the experience of the Schmidt Software Academy at Caltech, will have an initial lifespan of five years.

Adapted from a release published by Schmidt Futures.


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source: www.cam.ac.uk

Support for populist politics ‘collapsed’ during the pandemic – global report

Support for populist politics ‘collapsed’ during the pandemic – global report

Story: Fred Lewsey

“There is strong evidence that the pandemic has severely blunted the rise of populism”

Dr Roberto Foa

Support for populist parties and politicians, and agreement with populist sentiment, has fallen amid the pandemic, according to a “mega-dataset” taking in the attitudes of over half a million people across 109 countries.

A University of Cambridge team say there are clear signs of a turning tide for the “populist wave”, as the mishandling of coronavirus by populist leaders – along with a desire for stability and a decline in “polarising” attitudes as a result of the pandemic – starts to move public opinion.

The authors of the new report, from Cambridge’s Centre for the Future of Democracy (CFD), describe the study as the first global overview of how the Covid-19 crisis has affected political beliefs.

They say that threats posed by the pandemic saw a “technocratic” shift in political authority worldwide, with increased trust in government, and in experts such as scientists and civil servants.

Yet faith in the democratic processes by which people elect their representatives has continued to falter.

“The story of politics in recent years has been the emergence of anti-establishment politicians who thrive on the growing distrust of experts,” said Dr Roberto Foa, Co-Director of the CFD and the report’s lead author.

“From Erdogan and Bolsonaro to the ‘strong men’ of Eastern Europe, the planet has experienced a wave of political populism. Covid-19 may have caused that wave to crest.”

A protester calling for “Bolsonaro out” in Brazil last summer.

“Electoral support for populist parties has collapsed around the world in a way we don’t see for more mainstream politicians.

“There is strong evidence that the pandemic has severely blunted the rise of populism,” said Foa.

The findings are published by Cambridge’s Bennett Institute for Public Policy.

The first months of the pandemic saw many political leaders get a boost in ratings – a classic “rally round the flag” effect in troubled times, say researchers.

However, the approval ratings of populist leaders the world over began declining almost as soon as coronavirus hit, and have continued to sink ever since.

On average, populist leaders have seen a 10 percentage point drop between the spring of 2020 and the last quarter of 2021, while ratings for non-populists – on average – returned to around pre-pandemic levels.

Electoral support also plunged for their parties – seen most clearly in Europe, where the proportion of people intending to vote for a populist party* has fallen by an average of 11 percentage points to 27%.

“The pandemic fostered a sense of shared purpose that may have reduced political polarisation”

Dr Xavier Romero-Vidal

Overall, across Europe, early lockdowns saw voting intention for incumbent parties increase. Yet all the continent’s governing populists – from Italy’s Five Star to Hungary’s Fidezs – bucked the trend with the largest declines in support.

Support for Europe’s opposition populist parties also fell over the pandemic – by 5 points on average to 11% – while it rose for “mainstream” opposition.

Researchers suggest several factors for populism’s fading appeal. One is simply the botch job made of the pandemic by populist governments: from Bolsonaro’s mask veto to Trump’s “bleach injection” suggestion.

The report’s polling shows the public considered populist leaders to be less trustworthy sources of virus-related information than centrist counterparts.

In June 2020, approval of government handling of the crisis was 11 percentage points lower on average in countries with populist leaders than in those with more centrist governance. By the end of 2020, this gap had widened to 16 points.

Researchers also found that political “tribalism” – fertile ground for populists – has declined in most countries. The percentage of party supporters expressing a “strong dislike” of those who vote for opposing politicians fell in most nations (although not the US) during the crisis.

“The pandemic fostered a sense of shared purpose that may have reduced the political polarisation we’ve seen over the last decade,” said CFD researcher and report co-author Dr Xavier Romero-Vidal. “This could help explain why populist leaders are struggling to mobilise support.”

Some of the ideas propagated by populists are losing ground. Levels of agreement with statements such as “corrupt elites” divide our nation or the “will of the people” should be obeyed fell in almost every nation surveyed.

For example, agreement with four such statements** fell on average by 9 percentage points in Italy to 66%, 10 points in France to 61%, and 8 points in the UK to 64%, between 2019 and 2021.

Shift in the average agreement of survey respondents with 4 populist attitudes survey questions between 2019 and 2021.

Commitment to these ideas has also waned. Even among supporters, in almost every nation a smaller number now “strongly agree” than did in 2019. In developed democracies, this shift is predominantly among those aged over 55.

Moreover, areas with the sharpest drops in populist attitudes are some of the poorer “left behind” regions – from Eastern Poland to Southern Italy and Northern Hungary – that have been a focus for populist rhetoric and support.

“This may be down to some rebalancing of wealth as people escaped cities overrun with the virus,” said Foa. “In addition, Covid-19 border closures stopped migration and globalised trade more effectively than any populist government.”

However, some “illiberal” policies gained traction while populations were in the teeth of the pandemic.

Majorities in all major nations surveyed in 2020 were content with banning handshakes, and much of the public – including majorities in Japan and Germany – supported restricting online discussions of the virus***.

The consequence of populist decline has not been renewed faith in liberal democracy, say researchers. Perhaps tainted by the record of populists in office, support for democracy has also waned.

Instead, citizens increasingly favour technocratic sources of authority, such as having “non-political” experts take decisions.

A ‘Count Every Vote’ rally in Washington DC after the 2020 US election.

By the start of summer 2020, belief that experts should be allowed to make decisions “according to what they think best for the country” had risen 14 points to 62% in Europe and 8 points to 57% in the US****.

While trust in government has steadily climbed since the pandemic hit, increasing by 3.4 percentage points on average right across the world’s democratic nations*****, faith in democracy as a political system barely changed.

“Satisfaction with democracy has recovered only slightly since the post-war nadir of 2019, and is still well below the long-term average,” said Foa.

“Some of the biggest declines in democratic support during the pandemic were seen in Germany, Spain and Japan – nations with large elderly populations particularly vulnerable to the virus.”

In the US, the percentage of people who consider democracy a “bad” way to run the country more than doubled from 10.5% in late 2019 to 25.8% in late 2021.

Added Foa: “The pandemic has brought good and bad news for liberal democracy. On the upside, we see a decline in populism and a restoration of trust in government.

“On the downside, some illiberal attitudes have are increasing, and satisfaction with democracy remains very low.”

*Parties were classified as “populist” according to Rooduijn et al (2019): “The PopuList: An Overview of Populist, Far Right, Far Left and Eurosceptic Parties in Europe”, www.popu-list.org.

**In all, four statements considered mainstays of populist sentiment were tested: belief that the country is divided between ordinary people and corrupt elites; belief that “the will of the people” should guide politics; that special interests block progress; that information is deliberately concealed from the public.

*** Respondents were asked what measures they would support in the event of a future crisis similar to coronavirus.

****Targeted surveys in the US and seven Western European nations (Italy, Spain, France, Germany, Sweden, UK, Denmark). First survey in Nov 2019, with follow-up in May 2020.

*****All countries currently rated as full “free” democracies by Freedom House. Increase between 2nd quarter of 2020 to last quarter of 2021.

Image credits:

Top: Gayatri Malhotra

Brazil protest: Maria Fernanda Pissioli

Count Every Vote: Elvert Barnes

source: www.cam.ac.uk

The women helping to change the story of ovarian cancer

The women helping to change the story of ovarian cancer

By Louise Walsh

Published 24 January 2022

Every patient with cancer has a story to tell of their journey through diagnosis and treatment. We meet a group of women who are at the centre of pioneering research in Cambridge that’s changing the outcome of ovarian cancer – helping to create treatments that are as unique as their stories.

“The diagnosis date is etched in my brain: 5th October 2018. There was that moment when the waiting room emptied and I said to my husband ‘This isn’t right, something’s wrong’.”

Despite having no obvious symptoms and feeling well, Melanie was diagnosed with ovarian cancer. As with other women diagnosed with this rare but potentially devastating cancer, she was about to embark on a journey that would involve multiple investigations including tumour biopsies and imaging, as well as chemotherapy and other treatments.

“It was a frightening time but my husband and daughters have provided the most amazing support. We’ll put on our positivity playlist and we’ll dance around the kitchen, and my girls will say, right mum, we’re going to get through this.”

During her care at Cambridge, Melanie was invited to collaborate with researchers as part of the Ovarian Cancer Research Programme at the Cancer Research UK (CRUK) Cambridge Centre. She’s now a member of a patient group that provides advice and input into research and clinical trials at Cambridge to improve outcomes for her and for other women similarly affected.

Fellow member Fiona says: “Everybody who’s joined the patient group wants to help with the research and wants to help future patients, because ultimately most of us will not be around to actually get any benefit from it.”

Although both women were diagnosed with the same type of cancer, their cancers, and the ovarian cancers of other women, were in many ways quite different – and this could modify how they respond to treatment.

“One thing that I didn’t fully appreciate was that each cancer is different and personalised medicine can mean that you have a higher probability of succeeding in your treatment,” says Fiona “In my case, my genetic makeup meant the prognosis is much better on a particular regime of drugs, which is partly why I am clear at the moment.”

The women meet virtually several times a month, offering each other support during a life-changing time. Their unique experiences are helping to frame and refine research questions, as well as improve service delivery, in a programme led by Professors James Brenton and Evis Sala at the CRUK Cambridge Centre.

Without the women, the research would not be possible, says Brenton:

“Every blood test they’ve done; every scan; every appointment, monitoring their own tumour… every contribution to reviewing and improving the science proposals to understand what they are suffering from… these amazing contributions all bring us closer to overcoming ovarian cancer, not just in Cambridge, but all over the UK and the rest of the world.”

We hear about research that’s helping to change the story of ovarian cancer and meet some of the women at the centre of the programme: Panagiota, Margaret, Lorraine, Fiona and Melanie.

Panagiota was first diagnosed in 2021 and then underwent chemotherapy before receiving surgery to remove her cancerous tumours.

“It’s a very sneaky type of cancer to have when there is no screening programme. With breast cancer or cervical cancer, there are [regular] tests and if something is slightly abnormal you immediately get referred. There isn’t something like that for ovarian cancer.”

Panagiota experienced various symptoms that didn’t quite feel right for a couple of years. She felt pain and swelling in her abdomen and intestines for around six months. Her GP ran tests but the results were inconclusive at first, so no further action was taken. As Panagiota’s pain became more severe, she was sent for additional blood tests. That same day, her doctor called and instructed her to go to A&E to be treated for suspected pulmonary embolism.

CT scans of her upper body showed nodules at the bottom of her rib cage. Panagiota received a stage 3, metastatic ovarian cancer diagnosis; the cancer had spread to the peritoneum and throughout the abdominal area. She was shocked, having been in very good health until then.

Panagiota got through the incredibly difficult treatment time with the help of her loving family. She underwent multiple rounds of chemotherapy to shrink the tumour before surgery, which proved a success. She says she was treated by an amazing multi-disciplinary team at Addenbrooke’s Hospital in Cambridge who have since put her on PARP inhibitors, a new cancer drug, to stop the cancer from returning.

Panagiota is still closely monitored with frequent tests and hopes that other women will keep an eye on the ‘sneaky’ ovarian cancer symptoms that are often missed. She is also passionate that more funding be put into research to help other women to be diagnosed and treated faster in the future.

A difficult cancer

Each year about 7,500 women in the UK are diagnosed with ovarian cancer, and around 5,000 will have the most aggressive form of the disease.

“It’s a challenging disease to diagnose and treat,” says Brenton. “The symptoms can easily be missed or misdiagnosed and the disease has often spread around the abdomen before a woman is diagnosed, making treatment – and even imaging – a challenge. In addition, high-grade serous ovarian cancer has the most complex genetic damage of all human cancers, which makes it much easier for this disease to acquire resistance to treatment. These chaotic changes in the cancer cells mean that every patient is unique.”

The cure rate for women with ovarian cancer is very low despite new medicines coming into the clinic. Only 43% of women in England survive five years beyond their ovarian cancer diagnosis, compared with more common cancers such as breast (85%) and prostate (87%).

Part of the problem is that most patients present with advanced disease, and although 70–80% of patients will initially respond well to chemotherapy, ultimately most develop resistance, leading to treatment failure. In fact, a recent study found that 39% of patients did not see any benefit at all from chemotherapy.

“The narrative that ovarian cancer is a complex disease with poor outcomes hasn’t really changed for 20 years,” says Brenton.

Brenton and Sala’s research – in which the ovarian patient group plays a vital role – aims to address this. One study, for example, is investigating the mechanisms of treatment response that result in resistance to chemotherapy, with the aim of improving the prognosis for women with advanced stage ovarian cancer.

Research like this is starting to help inform clinical decisions regarding the best time to have chemotherapy and surgery – and to identify when patients aren’t going to benefit, enabling them to be switched to a trial or a new treatment that will work better.

Margaret’s diagnosis came just before Christmas 2020, against the backdrop of COVID-19 restrictions.

“I’m more positive about everything since joining the group. I hope that, even if there is no improvement for treatments for me, that at a later date I may help other people.”

Margaret noticed that she was having to stop to use the toilet while driving to work, and eventually developed severe pain. Having recovered from kidney cancer, she was concerned. This was clearly more than the urinary infection that her GP had initially suspected.

When she was eventually diagnosed, she was devastated. COVID-19 restrictions meant she had to attend the appointment alone. Margaret says her hardest point was the two weeks after diagnosis. It was her grandson’s first Christmas so she deferred telling her family to preserve their special family day.

After surgery which diagnosed stage 3 ovarian cancer, her treatment thankfully has been a success so far but she says it has been a lonely journey. Following chemotherapy she has been treated with new drugs – PARP inhibitors.

Participating in research at Cambridge has helped Margaret to understand her illness better and keep a more positive attitude. She hopes that volunteering will help benefit all women with the disease, and urges anyone in her position to come forward.

Integrated cancer medicine

With ever-improving technologies, modern medicine produces vast amounts of complex data for any one patient – clinical features, imaging, genomic data, molecular tests, tumour pathology, treatment outcomes – but the information is frequently fragmented, siloed and disconnected, creating a challenge for clinicians to manage effectively.

Brenton and Sala’s research aims to change this by harnessing the power of machine learning to integrate the various streams of patient data and to identify patterns that can help predict disease response and resistance. In other words, it will help clinicians find the right treatment for the right person at the right time.

Their work on ovarian cancer forms one strand of research at the Mark Foundation Institute for Integrated Cancer Medicine at the University of Cambridge. New treatments resulting from integrated cancer medicine are already being applied to manage patients on trials with breast cancer, renal cancer, pancreatic cancer and patients with high-grade B cell lymphoma.

The research on ovarian cancer is being used as a proof of concept for developing an application based on integrated cancer medicine by GE Healthcare in collaboration with the University of Cambridge and Cambridge University Hospitals. The aim is to offer all medical teams involved in a patient’s cancer care simultaneous access to the necessary data and information to allow the medical team to plan the best, most personalised treatment for each of their patients, as Sala explains:

“The team aims to transform the delivery of cancer patient care by integrating multiple data streams together into a single platform that can be accessed simultaneously by clinicians, patients and multi-disciplinary teams from tertiary and regional hospitals.”

Lorraine was first diagnosed in 2019 and underwent chemotherapy in 2020.

“The thing about ovarian cancer is the mortality rates haven’t changed in over 20 years, but hopefully with all the advancements they are making, I could live to 90.”

Lorraine’s diagnosis came when she’d decided to go on a diet as a new year’s resolution in 2019. She’d been on a strict regime for six weeks and instead of losing weight, she gained ten pounds. Initially, doctors began treating her for gallstones until she moved hospitals and saw a consultant at Addenbrooke’s Hospital in Cambridge. She was sent for a scan and diagnosed with ovarian cancer.

Lorraine had her tumour operated on which was then diagnosed as stage 3 ovarian cancer. After spending time in hospital, Lorraine began chemotherapy and had a total of eight doses with her treatment concluding in March 2020 as the pandemic began. She’s also been treated with PARP inhibitors.

Since relocating to Somerset, Lorraine is now being treated by the oncology team at the Beacon Centre, Musgrove Park Hospital in Taunton, as well as continuing to be part of a trial at Addenbrooke’s. Although Lorraine hasn’t been declared cancer free to date, she says she doesn’t let her cancer status define her.

Lorraine donated her tumour to help further research and continues with regular blood tests. With her granddaughters front of mind, the reason she joined this study is to help improve the detection and treatment of ovarian cancer in the future so that there is a better outcome for women.

New cancer hospital

Integrated cancer medicine technologies and precision treatments will form a key part of the Cambridge Cancer Research Hospital planned for the Cambridge Biomedical Campus. In December 2021, the hospital received approval of its strategic outline case by the Department for Health and Social Care and NHS England & NHS Improvement.

“[In the new hospital] we’ll see the true meaning of the multidisciplinary team,” says Sala. “We are used to doctors and nurses looking after patients. But we will have mathematicians and engineers having their input behind the scenes, with the science and the medicine really merging together in a way that hasn’t been done before.”

Moreover, bringing together complex data with machine learning techniques means clinicians will be able to make better decisions for patients, not just in Cambridge but, by sharing the model with other hospitals, across the UK and the world.

Sala adds: “The combined expertise and resources being deployed to help fight cancer in Cambridge offers real promise for improving the way we manage the disease in our NHS in the years to come. We are pushing forwards the development of new technologies and tools such as advanced image analysis and AI-based multi-layer data integration that could help us design better treatment pathways for cancer patients.

“While this programme is focused on fighting ovarian cancer, the University of Cambridge along with its industry partners and the life sciences community here will help the UK at large lead the world in the research and treatment of a variety of cancers.”

The ambition for the new hospital is to be truly transformational, as Professor Richard Gilbertson, Head of Department of Oncology and Director of CRUK Cambridge Centre, explains: “Patients will receive the highest-quality care with the best possible therapy at the forefront of research. The hospital will bring the power of unified information to the bedside of each patient, optimising their chance of an extended life.”

“We currently focus integrated cancer medicine on breast, ovary, renal, pancreatic and haematological malignancies, but we’ll spread that to all cancer types. By locating research at the heart of our hospital we will change the story of cancer for patients locally, regionally and across the globe.”Professor Richard Gilbertson

Fiona, a secondary school biology teacher, was first diagnosed in 2017 and has been clear of cancer since 2019.

“I believe the personalised aspect of my treatment was very important. It allows you to know that you have a higher probability of succeeding in your trials.”

As with most other women, Fiona’s initial symptoms were very mild. No pain, just a bit of discomfort and tiredness. She put it down to the menopause and only went to her GP eventually because she started working part-time, so had the flexibility.

After the results of a blood test, Fiona was asked to attend a scan at the local hospital. She wasn’t too concerned but things escalated quickly. Soon, she was referred to Addenbrooke’s Hospital in Cambridge. What had started as slight discomfort turned into a stage 4 ovarian cancer diagnosis.

Thankfully, given Fiona’s type of cancer, the treatment options were very clear. She soon fell into the ‘new normal’ of hospital visits, and benefitted from the support of her family and colleagues. In 2019 she was declared ‘all clear’, but still keeps a close watch on her own health, going for regular blood tests.

Fiona participated in research for the University of Cambridge because she wanted to help other women – including her own daughter. She was determined to use her experience positively and help Cambridge’s researchers continue to secure funding for their work.

Tiny but mighty

After months of seeing each other virtually on computer screens, the patient group met each other and their coordinator, Dr Marie-Lyne Alcaraz from the CRUK Cambridge Centre, face-to-face for the first time on a blustery winter day.

It was an emotional moment, says Melanie: “We’ve done so many Zoom calls that I feel like we know each other. We’ve shared such personal experiences. But actually being together face-to-face is really important. It is like meeting a group of friends.”

Amid the hugs and the laughter, one thing surprised them all. “They’re so tiny!” says Lorraine. “We all look the same size on screen. I’m only five foot three and three quarters so I thought I’d be the shortest!”

Beyond the support they’ve clearly gained from each other, they are proud to be contributing to new research, as Lorraine describes: “I’m really hoping that with all the research and the trials, they can detect ovarian cancer earlier because every single one of us has been found advanced and if they could find it early they could save a lot more women.”

Despite having the same diagnosis of ovarian cancer, each of the women has a unique story, says Margaret. “We all had different treatments and we’ve all recovered at various stages, which shows how difficult this illness is to treat.”

Far less is known or understood about ovarian cancer than other, more common forms, such as breast cancer. The women are passionate about sharing their experiences to help change this.

“What I am hoping is that the group will help make women more aware of ovarian cancer and perhaps help to draw more funding into research on how to diagnose and treat it,” says Panagiota.

The researchers themselves are incredibly grateful to the women – and the many other patients in Cambridge and further afield who have been willing to give suggestions, volunteer for trials and contribute their data.

“It is an honour to work with them,” says Brenton, adding:

“It’s because of individuals like these that the future for other patients has the potential to be very different. With their help, we’re changing the story of ovarian and other cancers. We’re starting to get better at detecting ovarian cancers earlier and earlier, and treating them more precisely, giving more women the chance to live longer, healthier lives.”

Melanie was first diagnosed in 2018 and treated by Professor Brenton in Cambridge.

“The studies and the research that was offered was so valuable because it helped progress my treatment plan.”

Melanie was diagnosed with stage 3 metastatic ovarian cancer the day before her niece’s wedding. She says she put symptoms down to menopause but, once she started to get pelvic pain, she went to her GP and things moved very quickly.

On her birthday, in November that same year, she got her treatment plan. Melanie says she had complete confidence in Professor Brenton and the team, agreeing immediately to join research trials. She says that she’s been amazed to learn how quickly the research was advancing, even in the short time since she’s been diagnosed.

It’s been great meeting the others in the patient group, she says. She feels they can raise awareness of the symptoms and encourage women to know their bodies, and to know when there is a change they shouldn’t ignore.

One thing that has helped her and her family through the past few years has been their positivity playlist, created by her daughters. They would listen to Maxine Nightingale and dance around the kitchen before appointments.

Melanie says that participating in the trials has helped her better understand her body. She rules nothing out because of the chance that the trials would help her treatment, and the treatment of those in the future.

After months of seeing each other virtually on computer screens, the patient group met each other and their coordinator, Dr Marie-Lyne Alcaraz, for the first time on a blustery winter day in Cambridge.

Infographics and design: Alison Fair
Photography: StillVision Photography

Have you or someone you know been diagnosed with ovarian cancer? Find out more about the Ovarian Cancer Patient Research Group, by contacting the Ovarian Cancer Research Programme at the CRUK Cambridge Centre.

The Mark Foundation Institute for Integrated Cancer Medicine at the University of Cambridge aims to revolutionise cancer care by re-inventing the treatment pathway for patients. Find out more by signing up to the Institute’s podcast and seminar series.

This research was supported by Cambridge University Hospitals NHS Foundation Trust, the CRUK Cambridge Centre, the CRUK Cambridge Institute, The Mark Foundation for Cancer Research US Ltd, Ovarian Cancer Action and the NIHR Cambridge Biomedical Research Centre. The views expressed are those of the authors and not necessarily those of the NIHR, the Department of Health and Social Care or other funders.

The text in this work is licensed under a Creative Commons Attribution 4.0 International License.

source: www.cam.ac.uk

The life-changing artificial pancreas

The life-changing artificial pancreas

Device helps manage type 1 diabetes in very young children

Sofia Wright (with mother Sam) showing the artificial pancreas app

Sofia Wright (with mother Sam) showing the artificial pancreas app (Credit: Phil Mynott)

 

AN ARTIFICIAL PANCREAS DEVELOPED BY CAMBRIDGE RESEARCHERS IS HELPING PROTECT VERY YOUNG CHILDREN WITH TYPE 1 DIABETES AT A PARTICULARLY VULNERABLE TIME OF THEIR LIVES.

Writing in the New England Journal of Medicine, researchers compared the performance of the artificial pancreas, which uses an algorithm to determine the amount of insulin administered by a device worn by the child, against ‘sensor-augmented pump therapy’. They found that it is both safe to use and more effective at managing their blood sugar levels than current technology.

Management of type 1 diabetes is challenging in very young children, because of a number of factors including the high variability in levels of insulin required and in how individual children respond to treatment, and their unpredictable eating and activity patterns. Children are particularly at risk of dangerously low blood sugar levels (hypoglycaemia) and high blood sugar levels (hyperglycaemia). Previous studies have linked prolonged hyperglycaemia in children with type 1 diabetes with lower IQ scores and slower brain growth.

To manage children’s glucose levels, doctors increasingly turn to devices that continuously monitor glucose levels and deliver insulin via a pump, which administers insulin through a cannula inserted into the skin. These devices have proved successful to an extent in older children, but not in very young children.

Current technology – sensor-augmented pump therapy – requires parents to review their child’s glucose levels using a monitor and then manually adjust the amount of insulin administered by the pump.

Professor Roman Hovorka from the Wellcome-MRC Institute of Metabolic Science at the University of Cambridge has developed an app – CamAPS FX – which, combined with a glucose monitor and insulin pump, acts as an artificial pancreas, automatically adjusting the amount of insulin it delivers based on predicted or real-time glucose levels. It is a ‘hybrid closed loop system’, meaning that the child’s carer will have to administer insulin at mealtimes, but at all other times the algorithm works by itself. There are no commercially-available versions of fully closed loop systems yet.

Artificial pancreas app, insulin pump and glucose monitor

Artificial pancreas app, insulin pump and glucose monitor

Professor Hovorka explained: “CamAPS FX makes predictions about what it thinks is likely to happen next based on past experience. It learns how much insulin the child needs per day and how this changes at different times of the day. It then uses this to adjust insulin levels to help achieve ideal blood sugar levels. Other than at mealtimes, it is fully automated, so parents do not need to continually monitor their child’s blood sugar levels.”

Working across seven centres in the UK and Europe, Professor Hovorka and an international team of researchers recruited 74 children with type 1 diabetes, aged one to seven years, to take part in their trial. The trial compared the safety and efficacy of hybrid closed-loop therapy with sensor-augmented pump therapy. All children used the CamAPS FX hybrid closed-loop system for 16 weeks, and then used the control treatment (sensor-augmented pump therapy) for 16 weeks.

IMPROVEMENTS IN GLUCOSE CONTROL

On average, children spent around three-quarters of their day (71.6%) in the target range for their glucose levels when using CamAPS FX – almost nine percentage points higher compared to the control period, accounting for an additional 125 minutes per day in the target range.

The children spent less than a quarter (22.9%) of their time with raised blood sugar levels – hyperglycaemia – while using CamAPS FX, almost nine percentage points lower than during the control period. There was no difference between the two groups in the time spent in hypoglycaemia.

The app reduced average blood sugar levels – a measurement of a molecule known as glycated haemoglobin, or HbA1c. Glycated haemoglobin develops when haemoglobin, a protein within red blood cells that carries oxygen throughout the body, joins with glucose in the blood, becoming ‘glycated’. By measuring HbA1c, clinicians are able to get an overall picture of what a person’s average blood sugar levels have been over a period of weeks or months. For people with diabetes, the higher the HbA1c, the greater the risk of developing diabetes-related complications.

At baseline, average HbA1c levels were 7.3% – the app reduced this by 0.7 percentage points. This is particularly noteworthy as the study participants had good glycaemic control – that is, relatively low HbA1c – to begin with, and it is often hard to improve glucose control without having more low blood glucose events (hypoglycaemia).

Dr Julia Ware, the study’s first author, also from the Wellcome-MRC Institute of Metabolic Science, said: “Very young children are extremely vulnerable to changes in their blood sugar levels. High levels in particular can have potentially lasting consequences to their brain development. On top of that, diabetes is very challenging to manage in this age group, creating a huge burden for families.

“CamAPS FX led to improvements in several measures, including hyperglycaemia and average blood sugar levels, without increasing the risk of hypos. This is likely to have important benefits for those children who use it.”

MORE TIME TO ‘DO FUN THINGS WITH THEIR CHILDREN’

One of the biggest challenges reported by families of young children with type 1 diabetes is poor sleep quality, as variability in insulin requirements and parental fear of hypoglycaemia are highest overnight. In their study, the researchers found that more than 80% of overnight sensor readings were within the target range, showing that hybrid closed-loop therapy addresses the ‘night-time problem’ more effectively than sensor-augmented pump therapy.

Dr Ware added: “Parents have described our artificial pancreas as ‘life-changing’ as it meant they were able to relax and spend less time worrying about their child’s blood sugar levels, particularly at night time. They tell us it gives them more time to do what any ‘normal’ family can do, to play and do fun things with their children.”

CamAPS FX is already having an impact on the lives of children and their families. It is available through a number of NHS trusts across the UK, including Cambridge University Hospitals NHS Foundation Trust, and the team hope it will soon be available even more widely.

Professor Hovorka added: “From the first clinical trials of our algorithms to today’s findings has taken well over a decade, but the dedication of my team and the support of all the children and families who have taken part in our studies, has paid off. We believe our artificial pancreas will transform the lives of families with very young children affected by type 1 diabetes.”

CamAPS FX has been shown to work in older children and adolescents with type 1 diabetes. Today’s study is the first time that it has been shown to be effective over several months in very young children.

“I feel like for the first time since the diagnosis I can relax”

Sofia and Sam’s story

By Charlotte James

 

Sofia and Sam Wright

Sofia (left) and Sam Wright (Credit: Phil Mynott)

Over the past three years Sam Wright, mother to Sofia (aged 6), has endured the tremendously steep learning curve any parent of a child with type 1 diabetes has to undergo. A whirlwind of finger prick tests, injections and sensors later, she has now discovered the CamAPS FX app and the hybrid closed-loop system – and would not be without it.

In a hot summer, excessive thirst wouldn’t be anything out of the ordinary for a young child. However, Sam and her mother followed their intuition that Sofia’s condition could be something more serious and began to research if there was any cause for concern, which ultimately led to her diagnosis of type 1 diabetes.

“The diagnosis changed everything forever,” says Sam. “I can remember the first few weeks like it was yesterday. Almost overnight I felt like I needed to be an expert in diabetes to best care for my little girl. She is my absolute priority, so I just did it, and I feel really proud of myself and my mum for doing it – she’s been on this journey with us from the beginning.”

A STEEP LEARNING CURVE

Like most parents with a newly diagnosed child with type 1 diabetes, Sam quickly became an expert at finger prick tests, basal and bolus insulin dosing and what to do when her daughter was hypoglycaemic. Injecting your child would be a challenge for any parent, but Sam also had to overcome her own fear of needles.

“The clinical team at Addenbrooke’s Hospital were amazing at helping me overcome some big challenges in those early days, especially Adam Dawes, Clinical Nurse Specialist at the hospital. I don’t think we’d be where we are today without the support of Adam and the clinical team.”

In the first few months of Sofia’s diagnosis, finger prick tests were a regular occurrence to understand blood glucose levels throughout the day. Sam also had to set alarms at night so she could check her daughter’s blood glucose levels. If Sofia’s levels were high or low, Sam would have to administer a corrective dose and then wait until her levels were moving in the right direction before going back to sleep, an exhausting process for both every single night.

Eventually Sofia received a continuous glucose monitor (CGM) to support her care. This is a small device with a sensor worn just under the skin to measure glucose levels continuously. Sam saw the CGM as a step in the right direction, particularly as the device meant she no longer had to set alarms at night – the device would alert her automatically if Sofia’s glucose levels were out of range. It also syncs with Sam’s phone so she can check Sofia’s blood glucose levels at school and it also helps teachers with care through the day.

FINDING FREEDOM

In January 2020 Sam was introduced to the CamAPS FX app. She hasn’t looked back since.

Sam had never heard of the hybrid closed-loop system, or the CamAPS FX app before, but when Sofia was invited to take part in the KidsAP research trial, led by the University of Cambridge, she “jumped in with both feet”.

“I have full trust in the CamAPS FX app and I feel like for the first time since the diagnosis I can relax,” she says. The time Sofia spends within her target blood glucose range has improved and it is much easier now to control her levels. “It’s a complete weight off my shoulders.”

The app has also reduced the burden for Sofia’s teachers. Sam is able to check on her daughter remotely, but has the reassurance that she will receive automated text messages if Sofia’s glucose levels are going high or low.

“You wouldn’t know that she is any different from any of her classmates and that is thanks to the CamAPS FX app.”

Sam says it makes sense for children of Sofia’s age to have the closed-loop, because their bodies are constantly changing how they respond to insulin. It is an extremely difficult ask for a parent to manage their child’s condition without significant highs and lows, whereas the app learns and adapts instantly. It is beneficial for the child’s long-term management of the condition and enables both children and their parents to sleep at night.

“I would never be without the app,” says Sam. “It is something looking out for you so you don’t have to worry. To anyone considering it, just go for it. It is a game changer and you won’t look back or want to be without it once you’ve had it. I completely believe it is so beneficial for both the parents and the child.”


The research was funded by the European Union’s Horizon 2020 Framework Programme, with additional support from the NIHR Cambridge Biomedical Research Centre, and JDRF.

CamAPS FX has been commercialised by CamDiab, a spin-out company set up by Professor Hovorka.

REFERENCE

Ware, J et al. Closed-loop in very young children with type 1 diabetes: a randomized trial. NEJM; 20 Jan 2022; DOI: 10.1056/NEJMoa2111673

source: www.cam.ac.uk

Samurai: History and Legend

Samurai: History and Legend

World-class collections, never-before-seen treasures and samurai cats go on display in Cambridge

#ULSamurai

Treasures from one of the world’s most important collections of Japanese literature will go on public display for the first time at Cambridge University Library from Saturday (Jan 22). 

Samurai: History and Legend is drawn from the world-class collections of Cambridge University Library, home to one of the pre-eminent collections of Japanese material anywhere outside of Japan, including one of the first Japanese books ever to reach British shores. 

Among the priceless treasures going on display for the first time is a seven metre-long scroll of the Lotus Sutra, a key Buddhist scripture in East Asia. Those with wealth and power showed their reverence for the sutra by sponsoring copies on the most precious materials available. 

The Lotus Sutra

The Library’s Lotus Sutra scroll was produced in Japan about 800 years ago with each Chinese character painstakingly handwritten in pure gold. The paper itself was dyed with indigo and decorated with gold and silver.

The free exhibition, which runs from January 22 to May 28, 2022, explores the historic roots of the samurai and the literary image of the samurai in manuscripts and woodblock-printed books from Japan. The objects provide a contrast to familiar imagery and modern perceptions of the samurai that, especially in the West, have led to widespread misunderstanding of their social and cultural role in Japan.

Samurai were not only warriors. Life as a samurai was complex and multi-faceted, not all predicated on warriorship, samurai swords and battles. Some exhibition texts reveal the place of music and performance in samurai life or show samurai playing the flute.

This illustration suggests a musical side to the famous 12th century warrior Minamoto no Yoshitsune, depicted here playing the flute in his garden.

Even the delicate art of flower arranging had deep ties to Buddhist practice and was part of samurai culture.

The later objects in the exhibition are colourful and visually striking. During a long period of peace, Japan developed a publishing industry with books, maps, and games for commoners and samurai alike. This later print culture shows a playful irreverence toward the samurai.

The exhibition includes a book depicting cats dressed as samurai complete with swords, and a board game in which the players throw a die to follow the life of a medieval warrior. There are also sketches by Hokusai, one of Japan’s most famous artists.

Samurai cats

This book, whose title Neko no shibai means ‘cat theatre’, features colourful illustrations of cats in costume, including cats dressed as Edo-period samurai with swords. The book was woodblock-printed between the 1870s and 1880s.

“The image of a samurai warrior is iconic, both in Japan and overseas. However, the imagery we usually see is as much legend and mythology as it is history,” said Exhibition Curator Dr Kristin Williams.

“We want visitors to question their assumptions about Japan while they explore and examine the rare books and objects in the exhibition. We may think of weaponry and armour when we think of samurai, but there was far, far more to their story.”

Going on display for the first time alongside helmets, antique children’s books, and a manuscript that passed flower-arranging techniques secretly between master and disciple, is Azuma kagami, one of the first Japanese books in Britain when it arrived around 1626. At the time, Japan was largely closed to foreigners.

In 1715, this single volume also became the first Japanese book in Cambridge University Library.

At first, it was misidentified as a Chinese manuscript and even bound upside down. The language is Chinese, but it is a work of Japanese history, printed in Japan using an old style of wooden movable type.

Added Dr Williams: “The hardest thing about curating this exhibition was choosing only 60 objects from a total collection of more than 130,000 Japanese items!

“Most people in the UK will have heard of samurai but only associate them with swords — the samurai image is so familiar but so distant from the real sources and stories. Hopefully, our exhibition  will inspire people to learn more about Japan and to seek out the stories behind our stereotypes.”

This beautiful woodblock dates from 1869 and reimagines an infamous 1703 night attack on the Edo mansion of Kira Yoshinaka by loyal samurai of the late Asano Naganori, intent on avenging their master’s death.

The attack took place in a time of peace when samurai rarely saw battle, and private vengeance like this was illegal. Asano’s men killed Kira but were themselves sentenced to death.

The vendetta inspired many theatrical retellings in the puppet and kabuki theatre, as well as more recent film adaptations. In this picture, its creator follows the way that the attack is depicted in the theatre, with heavy snow that would be unusual in Edo.

Dr Chris Burgess, Head of Exhibitions and Public Programmes at Cambridge University Library said: “When Japan started a modern army in the 1870s, the samurai became obsolete – but the legends grew bigger than ever as books and prints spread far beyond Japan’s borders.

“Centuries of complex history were collapsed into the sort of memorable images of the samurai that we’re all so familiar with today.

 “This exhibition asks visitors to examine, through the extraordinary books, manuscripts, and objects on display from our collections just what kind of samurai is revealed to us.”

The folding image format of this hunting scene (also seen above) allows the text and the images to spread out like a scroll, but to be stored compactly like a book.

Fujikawa Seisai was a master swordsman and a member of a samurai family. In his manuscripts, he brought together information about historic blades and arrows.

A three-panelled 19th century woodblock print shows an imagined scene below two sites of famous Japanese sea battles in 1185 (Yashima and Dannoura).

This woodblock-printed 1884 miniature book tells the story of the 1561 battle at Kawanakajima.

The three-panelled 19th century woodblock print above also folded away, as demonstrated here.

This illustration from an 1858 book about the priest Nichiren (1222-1282) shows the way Japanese wrote, read, and stored books in the past. Visitors will have the opportunity to handle an example of a traditional Japanese woodblock-printed book.

The warrior in this book is Minamoto no Yoshiie (1039-1106). The images depict the process of dressing in armour from undergarments to his weapons.

‘Gikei’ is another way to read the name Yoshitsune. This fanciful biography includes the story of his youthful training with winged creatures called tengū. Yoshitsune learned to fight while leaping or balancing on one foot as well as to fend off attacks with his fan.

SAMURAI: HISTORY AND LEGEND RUNS JAN 22-MAY 28, 2022
ENTRY IS FREE
NO BOOKING REQUIRED

The exhibition has been supported by the Great Britain Sasakawa Foundation, the Howard and Abby Milstein Foundation and the Friends of Cambridge University Library.

source: www.cam.ac.uk

Curbing COVID-19 In Schools: Cambridge Scientists Support CO2 Monitor Rollout

CO2 monitor
source: www.cam.ac.uk

 

UK schools have received more than 300,000 CO2 monitors as part of a government initiative to reduce COVID-19 spread in classrooms.

 

The monitors empower teachers to strike a balance between good ventilation and warmth during winter

Paul Linden

Scientists from Cambridge, Surrey and Imperial College London are supporting the rollout of portable monitors to UK schools as part of project CO-TRACE. The researchers behind the collaboration have produced materials to help teachers use the monitors, which have been rolled out to schools nationwide.

The level of carbon dioxide (CO2) in a closed space is a good indicator of air quality and can signpost the need for ventilation. As the virus that causes COVID-19 is airborne, ensuring the air is properly refreshed using ventilation is crucial for reducing its spread. The device displays levels of CO2 and colour coding to indicate good, normal, or poor ventilation. Well ventilated spaces should have CO2 levels consistently below 800 parts per million (ppm), with readings above 1500ppm indicating poor ventilation or over-crowding.

“CO2 monitors allow teachers to assess the ventilation in their classrooms for the first time,” said Imperial’s Dr Henry Burridge, co-investigator on the project. “This is especially important during colder months when ventilation is typically lower due to colder outdoor temperatures, causing COVID-19 and other airborne diseases like the common cold and flu to linger and spread more easily.”

The monitors mean teachers can see CO2 levels change in real-time as windows are opened and air is refreshed, allowing them to balance ventilation and warmth. Teachers can also use the monitors to know when it is safe to close windows slightly, which could help them keep classrooms more comfortable. As well as being a good ‘proxy’ for ventilation, lower CO2 levels have been linked to improved learning outcomes and better cogitative performance.

The team behind the CO-TRACE project uses experimental modelling, numerical simulations, full-scale observations, and infection risk modelling to understand how the potential for COVID-19 spread changes with indoor air flows, ventilation levels, and the number of people in a space. In 2021, the researchers used monitored CO2 to indicate how much exhaled breath was present within classrooms, and their models found that seasonal variation in classroom ventilation levels could lead to airborne infection risks in winter being roughly double those in summer. This highlights that monitoring excess CO2 could be of significant benefit in mitigating airborne infection risk.

The portability of the CO2 monitors, supplied by the Department for Education (DfE), means schools can move them around to test different areas, starting with those they suspect may be poorly ventilated.

“The monitors empower teachers to strike a balance between good ventilation and warmth during winter,” said Professor Paul Linden from Cambridge’s Department of Applied Mathematics and Theoretical Physics, co-investigator on the programme. “We are pleased that the government is taking evidence-based action to address air quality and COVID-19 spread in schools.”

The monitors are accompanied by advice from the project which guides appropriate actions from teacher based on the CO2 readings in classrooms. Recommendations include opening higher windows before lower ones, and closing windows slowly when ventilation is good.

Schools with areas that are consistently low in air quality despite ventilation should consider using air cleaners. For such schools, the DfE is distributing between 7,000 and 8,000 air cleaning units.

When the project was announced in 2021, then-Education Secretary Gavin Williamson said: “Providing all schools with CO2 monitors will help them make sure they have the right balance of measures in place, minimising any potential disruption to education and allowing them to focus on world-class lessons and catch up for the children who need it. By keeping up simple measures such as ventilation and testing, young people can now enjoy more freedom at school and college.”

The project is funded by the EPSRC, part of UK Research and Innovation (UKRI).

Adapted from an Imperial College story.


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‘Slushy’ Magma Ocean Led To Formation Of The Moon’s Crust

Magma ocean and first rocky crust on the Moon
source: www.cam.ac.uk

 

Scientists have shown how the freezing of a ‘slushy’ ocean of magma may be responsible for the composition of the Moon’s crust.

 

Cooling of the early magma ocean drove such vigorous convection that crystals remained suspended as a slurry, like the crystals in a slushy machine.

Jerome Neufeld

The scientists, from the University of Cambridge and the Ecole normale supérieure de Lyon, have proposed a new model of crystallisation, where crystals remained suspended in liquid magma over hundreds of millions of years as the lunar ‘slush’ froze and solidified. The results are reported in the journal Geophysical Research Letters.

Over fifty years ago, Apollo 11 astronauts collected samples from the lunar Highlands. These large, pale regions of the Moon – visible to the naked eye – are made up of relatively light rocks called anorthosites. Anorthosites formed early in the history of the Moon, between 4.3 and 4.5 billion years ago.

Similar anorthosites, formed through the crystallisation of magma, can be found in fossilised magma chambers on Earth. Producing the large volumes of anorthosite found on the Moon, however, would have required a huge global magma ocean.

Scientists believe that the Moon formed when two protoplanets, or embryonic worlds, collided. The larger of these two protoplanets became the Earth, and the smaller became the Moon. One of the outcomes of this collision was that the Moon was very hot – so hot that its entire mantle was molten magma, or a magma ocean.

“Since the Apollo era, it has been thought that the lunar crust was formed by light anorthite crystals floating at the surface of the liquid magma ocean, with heavier crystals solidifying at the ocean floor,” said co-author Chloé Michaut from Ecole normale supérieure de Lyon. “This ‘flotation’ model explains how the lunar Highlands may have formed.”

However, since the Apollo missions, many lunar meteorites have been analysed and the surface of the Moon has been extensively studied. Lunar anorthosites appear more heterogeneous in their composition than the original Apollo samples, which contradicts a flotation scenario where the liquid ocean is the common source of all anorthosites.

The range of anorthosite ages – over 200 million years – is difficult to reconcile with an ocean of essentially liquid magma whose characteristic solidification time is close to 100 million years.

“Given the range of ages and compositions of the anorthosites on the Moon, and what we know about how crystals settle in solidifying magma, the lunar crust must have formed through some other mechanism,” said co-author Professor Jerome Neufeld from Cambridge’s Department of Applied Mathematics and Theoretical Physics.

Michaut and Neufeld developed a mathematical model to identify this mechanism.

In the low lunar gravity, the settling of crystal is difficult, particularly when strongly stirred by the convecting magma ocean. If the crystals remain suspended as a crystal slurry, then when the crystal content of the slurry exceeds a critical threshold, the slurry becomes thick and sticky, and the deformation slow.

This increase of crystal content occurs most dramatically near the surface, where the slushy magma ocean is cooled, resulting in a hot, well-mixed slushy interior and a slow-moving, crystal-rich lunar ‘lid’.

“We believe it’s in this stagnant ‘lid’ that the lunar crust formed, as lightweight, anorthite-enriched melt percolated up from the convecting crystalline slurry below,” said Neufeld. “We suggest that cooling of the early magma ocean drove such vigorous convection that crystals remained suspended as a slurry, much like the crystals in a slushy machine.”

Enriched lunar surface rocks likely formed in magma chambers within the lid, which explains their diversity. The results suggest that the timescale of lunar crust formation is several hundreds of million years, which corresponds to the observed ages of the lunar anorthosites.

Serial magmatism was initially proposed as a possible mechanism for the formation of lunar anorthosites, but the slushy model ultimately reconciles this idea with that of a global lunar magma ocean.

The research was supported by the European Research Council.

Jerome Neufeld is also affiliated with the Department of Earth Sciences. He is a Fellow of Trinity College.

Reference:

Chloé Michaut and Jerome A. Neufeld. ‘Formation of the lunar primary crust from a long-lived slushy magma ocean.’ Geophysical Research Letters (2022). DOI: 10.1029/2021GL095408

Adapted from an ENS-Lyon press release.


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Learning Through ‘Guided’ Play Can Be As Effective As Adult-Led Instruction

source:  www.cam.ac.uk

 

Play-based learning may also have a more positive effect on younger children’s acquisition of important early maths skills compared with traditional, direct instruction.

 

If children are given the freedom to explore, but with some gentle guidance, it can be very good for their education – perhaps in some cases better than direct instruction

Elizabeth Byrne

Teaching younger children through ‘guided’ play can support key aspects of their learning and development at least as well, and sometimes better, than traditional, direct instruction, according to a new analysis.

The research, by academics at the University of Cambridge gathered and assessed data from numerous, widespread studies and information sources, which collectively documented guided play’s impact on the learning of around 3,800 children aged three to eight. Guided play broadly refers to playful educational activities which, although gently steered by an adult, give children the freedom to explore a learning goal in their own way.

Overall, the study found that this playful approach to learning can be just as effective as more traditional, teacher-led methods in developing key skills: including literacy, numeracy, social skills and essential thinking skills known as executive functions. The findings also suggest that children may master some skills – notably in maths – more effectively through guided play than other methods.

The relative merits of play-based learning compared with more formal styles of instruction is a long-standing debate in education, but most of that discussion has focused on ‘free’ open-ended play.

The new study is the first systematic attempt to examine the effects of guided play specifically, which is distinctive because it uses games or playful techniques to steer children towards specific learning goals, with support from a teacher or another adult using open-ended questions and prompts.

This may, for example, involve creating imagination-based games which require children to read, write or use maths; or incorporating simple early learning skills – such as counting – into play. Such methods are common in pre-school education, but are used less in primary teaching – a deficit which has been criticised by some researchers.

The analysis was carried out by academics from the Play in Education, Development and Learning (PEDAL) Centre at the Faculty of Education, University of Cambridge.

Dr Elizabeth Byrne, a co-author, said: “It’s only recently that researchers have started to conceptualise learning through play as something that exists on a spectrum. At one end you have free play, where children decide what to do with minimal adult involvement; at the other is traditional, direct instruction, where an adult tells a child what to do and controls the learning activity.”

“Guided play falls somewhere in between. It describes playful activities which are scaffolded around a learning goal, but allow children to try things out for themselves. If children are given the freedom to explore, but with some gentle guidance, it can be very good for their education – perhaps in some cases better than direct instruction.”

Paul Ramchandani, Professor of Play in Education, Development and Learning at the University of Cambridge, said: “The argument is sometimes made that play, while beneficial, adds little to children’s education. In fact, although there are still some big questions about how we should use guided play in classrooms, there is promising evidence that it actively enhances learning and development.”

Guided play has rarely been systematically studied in its own right, but the team found 39 studies, undertaken between 1977 and 2020, which had captured some information about its value compared either with free play or direct instruction, usually in the course of wider research.

By combining the results of studies which looked at similar types of learning outcome, the researchers were able to calculate how much of an overall positive or negative effect guided play has on different aspects of numeracy, literacy, executive functions or socioemotional skills, compared with other approaches. These effect sizes were measured using Hedge’s g; a widely-used statistical system in which a result of 0 represents no comparative gain, and 0.2, 0.5 and 0.8 represent small, medium and large effects respectively.

The results offer significant evidence that guided play has a greater positive impact on some areas of children’s numeracy than direct instruction. For example, guided play’s comparative effect size on early maths skills was 0.24, and 0.63 on shape knowledge. There was also evidence that guided play better supports the development of children’s cognitive ability to switch between tasks.

Alongside other positive findings, there was also no statistically significant evidence that guided play is less effective than direct instruction on any of the learning outcomes studied. In short, guided playful activities tend at the very least to produce roughly the same learning benefits as more traditional, teacher-led approaches.

The researchers offer various possible explanations about why guided play may improve numeracy in particular. One possibility is that the gentle prompting that guided play entails may be a particularly effective way of teaching children to work through the logical steps that maths-based tasks often involve.

Equally, the fact that guided play often involves hands-on learning may be important. “Children often struggle with mathematical concepts because they are abstract,” Byrne said. “They become easier to understand if you are actually using them in an imaginary game or playful context. One reason play matters may be because it supports mental visualisation.”

More broadly, the authors suggest that guided play may influence other characteristics which have a positive, knock-on effect on educational progress – enhancing, for example, children’s motivation, persistence, creativity and confidence.

Dr Christine O’Farrelly, a Senior Research Associate at the Faculty of Education, said: “It’s likely that playful activities have the sort of positive impact we saw in our analysis partly because they are acting on other skills and processes which underpin learning. If we can understand more about how guided play shapes learning in this way, we will be able to identify more precisely how it could be used to make a really meaningful difference in schools.”

The study is published in the journal Child Development.


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Cambridge Launches New Leverhulme Centre for Life in the Universe

Artists’s impression of the rocky super-Earth HD 85512 b
source: www.cam.ac.uk

 

With a £10 million grant awarded by the Leverhulme Trust, the University of Cambridge is to establish a new research centre dedicated to exploring the nature and extent of life in the universe.

 

The Centre will act as a catalyst for the development of our vision to understanding life in the Universe through a long-term research programme that will be the driving force for international coordination of research and education

Didier Queloz

The Leverhulme Centre for Life in the Universe will bring together an international team of scientists and philosophers, led by 2019 Nobel Laureate Professor Didier Queloz.

Thanks to simultaneous revolutions in exoplanet discoveries, prebiotic chemistry and solar system exploration, scientists can now investigate whether the Earth and the processes that made life possible are unique in the Universe.

The University has recently launched the Initiative for Planetary Science and Life in the Universe (IPLU) to enable cross-disciplinary research on planetology and life in the Universe.

Building on IPLU’s activities, the new Leverhulme Centre for Life in the Universe will support fundamental cross-disciplinary research over the next 10 years to tackle one of the great interdisciplinary challenges of our time: to understand how life emerged on Earth, whether the Universe is full of life, and ask what the nature of life is.

The Centre will include researchers from Cambridge’s Cavendish Laboratory, Department of Earth Sciences, Yusuf Hamied Department of Chemistry, Department of Applied Mathematics and Theoretical Physics, Institute of Astronomy, Department of Zoology, Department of History and Philosophy of Science, Faculty of Divinity, and the MRC Laboratory of Molecular Biology.

“The Centre will act as a catalyst for the development of our vision to understanding life in the Universe through a long-term research programme that will be the driving force for international coordination of research and education,” said Queloz, Jacksonian Professor of Natural Philosophy at the Cavendish Laboratory and Director of the Centre.

Research within the Centre will focus on four themes: identifying the chemical pathways to the origins of life; characterising the environments on Earth and other planets that could act as the cradle of prebiotic chemistry and life; discovering and characterising habitable exoplanets and signatures of geological and biological evolution; and refining our understanding of life through philosophical and mathematical concepts.

The Centre will collaborate with researchers at the University of Colorado Boulder, University College London, ETH Zurich, Harvard University and the Centre of Theological Inquiry in Princeton, New Jersey.

“Understanding the reactions that predisposed the first cells to form on Earth is the greatest unsolved mystery in science,” said programme collaborator Matthew Powner from University College London. “Critical challenges of increasing complexity must be addressed in this field, but these challenges represent one of the most exciting frontiers in science.”

Carol Cleland, Director of the Center for the Study of Origins and Professor of Philosophy at the University of Colorado Boulder, also collaborator on the programme said: “The new Centre is unique in the breadth of its interdisciplinarity, bringing together scientists and philosophers to address central questions about the nature and extent of life in the universe.

“Characteristics that scientists currently take as fundamental to life reflect our experience with a single example of life, familiar Earth life. These characteristics may represent little more than chemical and physical contingencies unique to the conditions under which life arose on Earth. If this is the case, our concepts for theorising about life will be misleading. Philosophers of science are especially well trained to help scientists ‘think outside the box’ by identifying and exploring the conceptual foundations of contemporary scientific theorising about life with an emphasis on developing strategies for searching for truly novel forms of life on other worlds.”


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Superbug MRSA Arose In Hedgehogs Long Before Clinical Use of Antibiotics

Hedgehog

source: www.cam.ac.uk

Scientists have found evidence that a type of the antibiotic resistant superbug MRSA arose in nature long before the use of antibiotics in humans and livestock, which has traditionally been blamed for its emergence.

 

We think MRSA evolved in a battle for survival on the skin of hedgehogs, and subsequently spread to livestock and humans through direct contact

Ewan Harrison

Staphylococcus aureus first developed resistance to the antibiotic methicillin around 200 years ago, according to a large international collaboration including the University of Cambridge, the Wellcome Sanger Institute, Denmark’s Serum Statens Institut and the Royal Botanic Gardens, Kew, which has traced the genetic history of the bacteria.

They were investigating the surprising discovery – from hedgehog surveys from Denmark and Sweden – that up to 60% of hedgehogs carry a type of MRSA called mecC-MRSA. The new study also found high levels of MRSA in swabs taken from hedgehogs across their range in Europe and New Zealand.

The study is published today in the journal Nature.

The researchers believe that antibiotic resistance evolved in Staphylococcus aureus as an adaptation to having to exist side-by-side on the skin of hedgehogs with the fungus Trichophyton erinacei, which produces its own antibiotics.

The resulting methicillin-resistant Staphylococcus aureus is better known as the superbug MRSA. The discovery of this centuries-old antibiotic resistance predates antibiotic use in medical and agricultural settings.

“Using sequencing technology we have traced the genes that give mecC-MRSA its antibiotic resistance all the way back to their first appearance, and found they were around in the nineteenth century,” said Dr Ewan Harrison, a researcher at the Wellcome Sanger Institute and University of Cambridge and a senior author of the study.

He added: “Our study suggests that it wasn’t the use of penicillin that drove the initial emergence of MRSA, it was a natural biological process. We think MRSA evolved in a battle for survival on the skin of hedgehogs, and subsequently spread to livestock and humans through direct contact.”

Antibiotic resistance in bugs causing human infections was previously thought to be a modern phenomenon, driven by the clinical use of antibiotics. Misuse of antibiotics is now accelerating the process, and antibiotic resistance is rising to dangerously high levels in all parts of the world.

Since almost all the antibiotics we use today arose in nature, the researchers say it is likely that resistance to them already exists in nature too. Overuse of any antibiotic in humans or livestock will favour resistant strains of the bug, so it is only a matter of time before the antibiotic starts to lose its effectiveness.

“This study is a stark warning that when we use antibiotics, we have to use them with care. There’s a very big wildlife ‘reservoir’ where antibiotic-resistant bacteria can survive – and from there it’s a short step for them to be picked up by livestock, and then to infect humans,” said Professor Mark Holmes, a researcher in the University of Cambridge’s Department of Veterinary Medicine and a senior author of the report.

In 2011, previous work led by Professor Holmes first identified mecC -MRSA in human and dairy cow populations. At the time it was assumed the strain had arisen in the cows because of the large amount of antibiotics they are routinely given.

MRSA was first identified in patients in 1960, and around 1 in 200 of all MRSA infections are caused by mecC-MRSA. Due to its resistance to antibiotics, MRSA is much harder to treat than other bacterial infections. The World Health Organization now considers MRSA one of the world’s greatest threats to human health. It is also a major challenge in livestock farming.

The findings are not a reason to fear hedgehogs, say the researchers: humans rarely get infections with mecC-MRSA, even though it has been present in hedgehogs for more than 200 years.

”It isn’t just hedgehogs that harbour antibiotic-resistant bacteria – all wildlife carries many different types of bacteria, as well as parasites, fungi and viruses,” said Holmes.

He added: “Wild animals, livestock and humans are all interconnected: we all share one ecosystem. It isn’t possible to understand the evolution of antibiotic resistance unless you look at the whole system.”

This research was funded by the Medical Research Council.

Reference
Larsen, J. et al: ‘Emergence of methicillin resistance predates the clinical use of antibiotics.’ Nature, January 2022, DOI: 10.1038/s41586-021-04265-w


At a glance
  • Hedgehogs carry a fungus and a bacteria on their skin, and the two are locked in a battle for survival

  • The fungus secretes antibiotics to kill the bacteria, but in response the bacteria has evolved antibiotic resistance – becoming Methicillin-resistant Staphylococcus aureus, or MRSA

  • Up to 60% of hedgehogs carry a type of MRSA called mecC-MRSA, which causes 1 in 200 of all MRSA infections in humans

  • Natural biological processes, not antibiotic use, drove the initial emergence of this superbug on hedgehogs around 200 years ago


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Cambridge’s Finest Recognised in 2022 New Year’s Honours

source: www.cam.ac.uk

 

Academics and other staff associated with the University of Cambridge feature in the 2022 New Year’s Honours List.

 

Public service is what so many of us at this University aspire to and it’s been noticeable in abundance over the last two years.

Professor Stephen Toope, Vice-Chancellor

Among those awarded is Emeritus Professor James Diggle who receives the CBE for Services to Classical Scholarship. He was Professor of Greek and Latin from 1995 until he retired in 2011 and is a Fellow of the British Academy as well as Life Fellow at Queens’ College.

Professor Diggle said: “My pleasure in receiving this honour will, I hope, be shared by Queens’ College and the Faculty of Classics, both of which I have been closely associated with throughout the whole of my career, and also by Cambridge University Press, which has just published the Greek Lexicon on which I worked as Editor for over 20 years.”

Lynne McClure, Director of Cambridge Mathematics, receives the OBE for Services to Education. Cambridge Mathematics is an enterprise committed to championing and securing a world class mathematics education for all students from 3 to 19 years old and is a collaboration of three University partners – Cambridge Press and Assessment, and the Faculties of Mathematics and Education.

She said: “I am very pleased personally to be a recipient in the New Year’s Honours, but even more delighted that this award highlights the importance of mathematics education – for everyone. At Cambridge Mathematics we are privileged to benefit from collaboration with amazing practitioners, researchers and designers in the UK and internationally, working together to improve mathematics education, worldwide.”

Professor Pauline Rose, Professor of International Education and Director of Research for Equitable Access and Learning Centre in the Faculty of Education, receives the OBE for Services to International Girls’ Education: “I’m truly honoured and genuinely surprised to receive an OBE for services to international girls’ education. Thanks to all who’ve worked with me, supported and challenged me over the years. I look forward to continued collaboration on evidence to improve quality education for all.”

Professor Lorand Bartels, Professor of International Law in the Faculty of Law and a Fellow of Trinity Hall, receives an MBE for Services to UK Trade Policy. Professor Bartels, who is currently Chair of the UK’s Trade and Agriculture Commission, said: “It is a great honour for a trade lawyer to be recognised in this way. It has been a privilege to be able to work with the government over the last few years as it has developed its newly independent trade policies, and it has been immensely satisfying to be able to put my academic work into practice. I hope that this award inspires others to become involved in what is truly a fascinating and important area of international law.”

Dr Robert Bud, Affiliated Scholar, Department of History and Philosophy of Science, receives an MBE for Services to the Science Museum and Northern Industrial Heritage. Robert Bud is Emeritus Keeper at the Science Museum, London, where he was a senior curator for 40 years: “I have benefited tremendously from association with the History and Philosophy of Science Department whose researchers have welcomed me, encouraged presentations, and collaborated on projects to great benefit of my work at the Science Museum.”

The University’s Vice-Chancellor, Professor Stephen Toope, said: “It’s pleasing to see another group of people associated with Collegiate Cambridge receiving recognition in the New Year’s Honours list. Public service is what so many of us at this University aspire to and it’s been noticeable in abundance over the last two years. I offer my congratulations to those who’ve been honoured in this way for their commitment and their achievements.”


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Reinterpreting Newton and Religion

Reinterpreting Newton and Religion

Rediscovered notebook adds new depth to our understanding of Isaac Newton’s relationship with theology

A manuscript notebook which illuminated Isaac Newton’s complex and unorthodox relationship with Christianity – thought lost for almost 450 years – has been added to the world’s largest and most important archive of Newton material, held at Cambridge University Library.

The notebook, originally thought lost, belonged to Newton’s long-time friend and collaborator, John Wickins, and was purchased at auction this year thanks to the generosity of Friends of the National Libraries, Friends of Cambridge University Library and other donors

It was kept by Wickins while he was Newton’s roommate at Trinity College, and presents the earliest datable evidence of Newton’s theological writing. Containing 12,000 words in English and 5,000 in Latin, the notebook is the longest collection of Newtonian writing to be discovered in the last half a century.

“The notebook of John Wickins is a fine complement to these papers and adds significantly to our understanding of Newton and his writings, as well as casting new light on other manuscripts in the University Library”Dr Jill Whitelock, Head of Special Collections at the University Library

The text was identified by Scott Mandelbrote, Fellow of Peterhouse College, Cambridge, and Editorial Director of The Newton Project, when the notebook came up for auction, with additional research by former Munby Fellow at the University Library, Anke Timmermann of Type & Forme, acting on behalf of the Library

The Latin text records a University ‘disputation’ in which Newton was required to discuss in public two theological topics. Although the text only contains Newton’s first disputation, concerning the compatibility of God’s perfect foreknowledge with human free will, it reflects how seriously he took the exercise.

Newton spoke in Latin for over an hour on a subject that was as difficult as it was sensitive. What, though, does the manuscript tell us about Newton’s religious beliefs?

Heresy from orthodoxy?

Newton was an unusual Christian. At some point in his adult years, and certainly by 1690, Newton had dismantled the standard biblical proofs for the doctrine of the Trinity whilst keeping his beliefs to himself.

It was not until after his death in 1727 that his views became public and they have attracted study and speculation ever since.

Many scholars have tried to interpret the thoughts and workings of Newton over the years, all with one seemingly common view – that Newton’s deviation from the orthodox beliefs of the time was a private undertaking. Despite this collective thinking, there has been nothing to help substantiate this hypothesis.

Only when evidence of Newton’s involvement in university theology disputations in 1677 came to light did it become possible to find a dateable starting point for Newton’s theological activity.

Disputations involved students using argumentative skills to defend a set proposition from the counterarguments of their peers, or even their professor. Newton was not exempt from these exercises and it is interesting that the topics on which he disputed remained central to his theological reading and writing for the next four decades.

The text of the disputation shows Newton facing the big questions of free will and evil head on. Newton seems to have undertaken a programme of intense theological reading as shown in the letters he wrote to Wickins, copied in the notebook, where he supplied bibliographical essays to his friend.

What the notebook shows us is the institutional push that drove Newton to start to engage in a programme of theological study and how he was being shaped by the university where he lived and worked.

The notebook

The notebook was compiled while Wickins was a Fellow of Trinity College, a position he resigned in April 1684.

The manuscript gives us a precious insight into Newton’s relationship with his friend, to whom he addressed himself as ‘your ever loving Chamber fellow’. The pair chose to live together for much of their time at Trinity.

Wickins acted as an assistant to Newton and helped to copy notes as well as turning their College rooms into a laboratory. Wickins wrote out a number of optical papers for Newton, just as he wrote out the texts in this notebook. Some of the letters in the notebook reveal that during the 1670s Wickins worked with Newton on improving the reflecting telescope.

Included in the notebook are three transcribed letters from Newton. The originals had been lost by 1728, making these transcriptions the only surviving record of this correspondence.

The first letter, which dates from around 1678, refers to developments in a dispute between Newton and the Jesuit Father Linus about his particle theory of light that originated from Newton’s first publication on the heterogeneous nature of white light in the Royal Society’s Philosophical Transactions in 1672.

The last two letters in the notebook consider appropriate theological literature in the context of purchases to be made by Newton for Wickins, who was active as a provincial clergyman by 1682.

Newton’s collections

Cambridge University Library holds the largest and most important collection of the scientific works of Sir Isaac Newton, which range from his early papers and College notebooks through to the ground-breaking Waste Book and his own annotated copy of the first edition of the Principia.

These manuscripts along with those held at Trinity College Cambridge, King’s College Cambridge, the Fitzwilliam Museum, the Royal Society and the National Library of Israel have been added to the UNESCO Memory of the World Register – an international initiative launched to safeguard the documentary heritage of humanity.

“It is only through the documentary heritage represented by his scientific and mathematical papers that we see a full picture of Newton and how he worked. The papers represent one of the most important archives of scientific and intellectual work on global phenomena.”Dr Jill Whitelock, Head of Special Collections at the University Library

Isaac Newton’s Philosophiæ naturalis principia mathematica. © Cambridge University Library

“They document the development of his thought on universal gravitation, calculus, and optics and reveal not discoveries fully formed through inspiration of a lone genius, but ideas worked out through painstaking experiments, calculations, correspondence and revisions,” added Whitelock.

The catalogue record in ArchiveSearch can be found here.

Many of the texts and manuscripts in the collection are available to view and study freely on the Cambridge Digital Library.

The Friends of Cambridge University Libraries support us to grow, share and care for its extraordinary collections.

Help us to acquire manuscripts, rare books, journals, newspapers, photographs, and letters and more by joining today.

Join the Friends of the Library

source: www.cam.ac.uk

Controlled Burning of Natural Environments Could Help Offset Our Carbon Emissions

Controlled Burning of Natural Environments Could Help Offset Our Carbon Emissions

Prescribed burn of grassland

 

Planting trees and suppressing wildfires do not necessarily maximise the carbon storage of natural ecosystems. A new study has found that prescribed burning can actually lock in or increase carbon in the soils of temperate forests, savannahs and grasslands.

 

When managed properly, fire can be good – both for maintaining biodiversity and for carbon storage

Adam Pellegrini

The finding points to a new method of manipulating the world’s natural capacity for carbon capture and storage, which can also help to maintain natural ecosystem processes. The results are published today in the journal Nature Geoscience.

“Using controlled burns in forests to mitigate future wildfire severity is a relatively well-known process. But we’ve found that in ecosystems including temperate forests, savannahs and grasslands, fire can stabilise or even increase soil carbon,” said Dr Adam Pellegrini in the University of Cambridge’s Department of Plant Sciences, first author of the report.

He added: “Most of the fires in natural ecosystems around the globe are controlled burns, so we should see this as an opportunity. Humans are manipulating a process, so we may as well figure out how to manipulate it to maximise carbon storage in the soil.”

Fire burns plant matter and organic layers within the soil, and in severe wildfires this leads to erosion and leaching of carbon. It can take years or even decades for lost soil carbon to re-accumulate. But the researchers say that fires can also cause other transformations within soils that can offset these immediate carbon losses, and may stabilise ecosystem carbon.

Fire stabilises carbon within the soil in several ways. It creates charcoal, which is very resistant to decomposition, and forms ‘aggregates’ – physical clumps of soil that can protect carbon-rich organic matter at the centre. Fire can also increase the amount of carbon bound tightly to minerals in the soil.

“Ecosystems can store huge amounts of carbon when the frequency and intensity of fires is just right. It’s all about the balance of carbon going into soils from dead plant biomass, and carbon going out of soils from decomposition, erosion, and leaching,” said Pellegrini.

When fires are too frequent or intense – as is often the case in densely planted forests – they burn all the dead plant material that would otherwise decompose and release carbon into the soil. High-intensity fires can also destabilise the soil, breaking off carbon-based organic matter from minerals and killing soil bacteria and fungi.

Without fire, soil carbon is recycled – organic matter from plants is consumed by microbes and released as carbon dioxide or methane. But infrequent, cooler fires can increase the retention of soil carbon through the formation of charcoal and soil aggregates that protect from decomposition.

The scientists say that ecosystems can also be managed to increase the amount of carbon stored in their soils. Much of the carbon in grasslands is stored below-ground, in the roots of the plants. Controlled burning, which helps encourage grass growth, can increase root biomass and therefore increase the amount of carbon stored.

“In considering how ecosystems should be managed to capture and store carbon from the atmosphere, fire is often seen as a bad thing. We hope this new study will show that when managed properly, fire can also be good – both for maintaining biodiversity and for carbon storage,” said Pellegrini.

The study focused on carbon stored in topsoils, defined as those less than 30cm deep. More carbon is stored in the world’s soil than in the global vegetation and the atmosphere combined. Natural fires occur in most ecosystems worldwide, making fire an important process in global carbon cycling.

This research was funded by the Gatsby Charitable Foundation.

Reference
Pellegrini, A. F.A. et al: ‘Fire effects on the persistence of soil organic matter and long-term carbon storage’, Nature Geoscience, December 2021. DOI 10.1038/s41561-021-00867-1

 

Read more about Adam Pellegrini’s research

Fire: The Great Manipulator

Forests’ long-term capacity to store carbon is dropping in regions with extreme annual fires

source: www.cam.ac.uk


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Clues to Treatment of Schizophrenia and Bipolar Disorder Found in Recently Evolved Region of The ‘Dark Genome’

Clues to Treatment of Schizophrenia and Bipolar Disorder Found in Recently Evolved Region of The ‘Dark Genome’

DNA
DNA Credit: Brano on Unsplash

 

Scientists investigating the DNA outside our genes – the ‘dark genome’ – have discovered recently evolved regions that code for proteins associated with schizophrenia and bipolar disorder.

 

This opens up huge potential for new druggable targets. It’s really exciting because nobody has ever looked beyond the genes for clues to understanding and treating these conditions before.

Sudhakaran Prabakaran

They say these new proteins can be used as biological indicators to distinguish between the two conditions, and to identify patients more prone to psychosis or suicide.

Schizophrenia and bipolar disorder are debilitating mental disorders that are hard to diagnose and treat. Despite being amongst the most heritable mental health disorders, very few clues to their cause have been found in the sections of our DNA known as genes.

The scientists think that hotspots in the ‘dark genome’ associated with the disorders may have evolved because they have beneficial functions in human development, but their disruption by environmental factors leads to susceptibility to, or development of, schizophrenia or bipolar disorder.

The results are published today in the journal Molecular Psychiatry.

“By scanning through the entire genome we’ve found regions, not classed as genes in the traditional sense, which create proteins that appear to be associated with schizophrenia and bipolar disorder,” said Dr Sudhakaran Prabakaran, who was based in the University of Cambridge’s Department of Genetics when he conducted the research, and is senior author of the report.

He added: “This opens up huge potential for new druggable targets. It’s really exciting because nobody has ever looked beyond the genes for clues to understanding and treating these conditions before.”

The researchers think that these genomic components of schizophrenia and bipolar disorder are specific to humans – the newly discovered regions are not found in the genomes of other vertebrates. It is likely that the regions evolved quickly in humans as our cognitive abilities developed, but they are easily disrupted – resulting in the two conditions.

“The traditional definition of a gene is too conservative, and it has diverted scientists away from exploring the function of the rest of the genome,” said Chaitanya Erady, a researcher in the University of Cambridge’s Department of Genetics and first author of the study.

She added: “When we look outside the regions of DNA classed as genes, we see that the entire human genome has the ability to make proteins, not just the genes. We’ve found new proteins that are involved in biological processes and are dysfunctional in disorders like schizophrenia and bipolar disorder.”

The majority of currently available drugs are designed to target proteins coded by genes. The new finding helps to explain why schizophrenia and bipolar disorder are heritable conditions, and could provide new targets for future treatments.

Schizophrenia is a severe, long-term mental health condition that may result in hallucinations, delusions, and disordered thinking and behaviour, while bipolar disorder causes extreme mood swings ranging from mania to depression. The symptoms sometimes make the two disorders difficult to tell apart.

Prabakaran left his University position earlier this year to create the company NonExomics, in order to commercialise this and other discoveries. Cambridge Enterprise, the commercialisation arm of the University of Cambridge, has assisted NonExomics by licensing the intellectual property. Prabakaran has raised seed funding to develop new therapeutics that will target the proteins implicated in schizophrenia and bipolar disorder, and other diseases.

His team has now discovered 248,000 regions of DNA outside of the regions conventionally defined as genes, which code for new proteins that are disrupted in disease.

Reference
Erady, C. et al: ‘Novel open reading frames in human accelerated regions and transposable elements reveal new leads to understand schizophrenia and bipolar disorder’, Molecular Psychiatry, December 2021. DOI 10.1038/s41380-021-01405-6


At a glance

  • Genes code for proteins – the building blocks of life. The current definition of a gene only accounts for around 1.5% of our entire DNA

  • Very little is known about the function of regions of DNA outside our genes – termed the ‘dark genome’

  • A Cambridge-led team recently discovered that proteins are produced by over 248,000 regions of the ‘dark genome’, and are disrupted in multiple diseases

  • Now they have discovered new proteins arising from recently evolved regions of the ‘dark genome’, which could be targeted in the diagnosis and treatment of schizophrenia and bipolar disorder

 

source: www.cam.ac.uk


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New Grafting Technique Could Combat The Disease Threatening Cavendish Bananas

New Grafting Technique Could Combat The Disease Threatening Cavendish Bananas

Bananas
Bananas Credit: This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license. Credit:Steve Hopson

 

Scientists have found a novel way to combine two species of grass-like plant including banana, rice and wheat, using embryonic tissue from their seeds. The technique allows beneficial characteristics, such as disease resistance or stress tolerance, to be added to the plants.

 

Our technique allows us to add disease resistance, or other beneficial properties like salt-tolerance, to grass-like plants without resorting to genetic modification or lengthy breeding programmes

Greg Reeves

Grafting is the technique of joining the shoot of one plant with the root of another, so they continue to grow together as one. Until now it was thought impossible to graft grass-like plants in the group known as monocotyledons because they lack a specific tissue type, called the vascular cambium, in their stem.

Researchers at the University of Cambridge have discovered that root and shoot tissues taken from the seeds of monocotyledonous grasses – representing their earliest embryonic stages – fuse efficiently. Their results are published today in the journal Nature.

An estimated 60,000 plants are monocotyledons; many are crops that are cultivated at enormous scale, for example rice, wheat and barley.

The finding has implications for the control of serious soil-borne pathogens including Panama Disease, or ‘Tropical Race 4’, which has been destroying banana plantations for over 30 years. A recent acceleration in the spread of this disease has prompted fears of global banana shortages.

“We’ve achieved something that everyone said was impossible. Grafting embryonic tissue holds real potential across a range of grass-like species. We found that even distantly related species, separated by deep evolutionary time, are graft compatible,” said Professor Julian Hibberd in the University of Cambridge’s Department of Plant Sciences, senior author of the report.

The technique allows monocotyledons of the same species, and of two different species, to be grafted effectively. Grafting genetically different root and shoot tissues can result in a plant with new traits – ranging from dwarf shoots, to pest and disease resistance.

The scientists found that the technique was effective in a range of monocotyledonous crop plants including pineapple, banana, onion, tequila agave and date palm. This was confirmed through various tests, including the injection of fluorescent dye into the plant roots – from where it was seen to move up the plant and across the graft junction.

“I read back over decades of research papers on grafting and everybody said that it couldn’t be done in monocots. I was stubborn enough to keep going – for years – until I proved them wrong,” said Dr Greg Reeves, a Gates Cambridge Scholar in the University of Cambridge Department of Plant Sciences, and first author of the paper.

He added: “It’s an urgent challenge to make important food crops resistant to the diseases that are destroying them. Our technique allows us to add disease resistance, or other beneficial properties like salt-tolerance, to grass-like plants without resorting to genetic modification or lengthy breeding programmes.”

The world’s banana industry is based on a single variety, called the Cavendish banana – a clone that can withstand long-distance transportation. With no genetic diversity between plants, the crop has little disease-resilience. And Cavendish bananas are sterile, so disease resistance can’t be bred into future generations of the plant. Research groups around the world are trying to find a way to stop Panama Disease before it becomes even more widespread.

Grafting has been used widely since antiquity in another plant group called the dicotyledons. Dicotyledonous orchard crops including apples and cherries, and high value annual crops including tomatoes and cucumbers, are routinely produced on grafted plants because the process confers beneficial properties – such as disease resistance or earlier flowering.

The researchers have filed a patent for their grafting technique through Cambridge Enterprise. They have also received funding from Ceres Agri-Tech, a knowledge exchange partnership between five leading UK universities and three renowned agricultural research institutes.

“Panama disease is a huge problem threatening bananas across the world. It’s fantastic that the University of Cambridge has the opportunity to play a role in saving such an important food crop,” said Dr Louise Sutherland, Director Ceres Agri-Tech.

Ceres Agri-Tech, led by the University of Cambridge, was created and managed by Cambridge Enterprise. It has provided translational funding as well as commercialisation expertise and support to the project, to scale up the technique and improve its efficiency.

This research was funded by the Gates Cambridge Scholarship programme.

Reference
Reeves, G. et al: ‘Monocotyledonous plants graft at the embryonic root-shoot interface.’ Nature, December 2021. DOI 10.1038/s41586-021-04247-y

source: www.cam.ac.uk


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‘Battle of the sexes’ Begins In Womb as Father and Mother’s Genes Tussle Over Nutrition

‘Battle of the sexes’ Begins In Womb as Father and Mother’s Genes Tussle Over Nutrition

Section of mouse fetus and placenta
Section of mouse fetus and placenta Credit: Ionel Sandovici

 

Cambridge scientists have identified a key signal that the fetus uses to control its supply of nutrients from the placenta in a tug-of-war between genes inherited from the father and from the mother. The study, carried out in mice, could help explain why some babies grow poorly in the womb.

 

The father’s gene drives the fetus’s demands for larger blood vessels and more nutrients, while the mother’s gene in the placenta tries to control how much nourishment she provides

Miguel Constância

As the fetus grows, it needs to communicate its increasing needs for food to the mother. It receives its nourishment via blood vessels in the placenta, a specialised organ that contains cells from both baby and mother.

Between 10% and 15% of babies grow poorly in the womb, often showing reduced growth of blood vessels in the placenta. In humans, these blood vessels expand dramatically between mid and late gestation, reaching a total length of approximately 320 kilometres at term.

In a study published today in Developmental Cell, a team led by scientists at the University of Cambridge used genetically engineered mice to show how the fetus produces a signal to encourage growth of blood vessels within the placenta. This signal also causes modifications to other cells of the placenta to allow for more nutrients from the mother to go through to the fetus.

Dr Ionel Sandovici, the paper’s first author, said: “As it grows in the womb, the fetus needs food from its mum, and healthy blood vessels in the placenta are essential to help it get the correct amount of nutrients it needs.

“We’ve identified one way that the fetus uses to communicate with the placenta to prompt the correct expansion of these blood vessels. When this communication breaks down, the blood vessels don’t develop properly and the baby will struggle to get all the food it needs.”

The team found that the fetus sends a signal known as IGF2 that reaches the placenta through the umbilical cord. In humans, levels of IGF2 in the umbilical cord progressively increase between 29 weeks of gestation and term: too much IGF2 is associated with too much growth, while not enough IGF2 is associated with too little growth. Babies that are too large or too small are more likely to suffer or even die at birth, and have a higher risk to develop diabetes and heart problems as adults.

Dr Sandovici added: “We’ve known for some time that IGF2 promotes the growth of the organs where it is produced. In this study, we’ve shown that IGF2 also acts like a classical hormone – it’s produced by the fetus, goes into the fetal blood, through the umbilical cord and to the placenta, where it acts.”

Particularly interesting is what their findings reveal about the tussle taking place in the womb.

In mice, the response to IGF2 in the blood vessels of the placenta is mediated by another protein, called IGF2R. The two genes that produce IGF2 and IGF2R are ‘imprinted’ – a process by which molecular switches on the genes identify their parental origin and can turn the genes on or off. In this case, only the copy of the igf2 gene inherited from the father is active, while only the copy of igf2r inherited from the mother is active.

Lead author Dr Miguel Constância, said: “One theory about imprinted genes is that paternally-expressed genes are greedy and selfish. They want to extract the most resources as possible from the mother. But maternally-expressed genes act as countermeasures to balance these demands.”

“In our study, the father’s gene drives the fetus’s demands for larger blood vessels and more nutrients, while the mother’s gene in the placenta tries to control how much nourishment she provides. There’s a tug-of-war taking place, a battle of the sexes at the level of the genome.”

The team say their findings will allow a better understanding of how the fetus, placenta and mother communicate with each other during pregnancy. This in turn could lead to ways of measuring levels of IGF2 in the fetus and finding ways to use medication to normalise these levels or promote normal development of placental vasculature.

The researchers used mice, as it is possible to manipulate their genes to mimic different developmental conditions. This enables them to study in detail the different mechanisms taking place. The physiology and biology of mice have many similarities with those of humans, allowing researchers to model human pregnancy, in order to understand it better.

The lead researchers are based at the Department of Obstetrics and Gynaecology, the Medical Research Council Metabolic Diseases Unit, part of the Wellcome-MRC Institute of Metabolic Science, and the Centre for Trophoblast Research, all at the University of Cambridge.

The research was largely funded by the Biotechnology and Biological Sciences Research Council, Medical Research Council, Wellcome Trust and Centre for Trophoblast Research.

Reference
Sandovici, I et al. The Imprinted Igf2-Igf2r Axis is Critical for Matching Placental Microvasculature Expansion to Fetal Growth. Developmental Cell; 10 Jan 2022: DOI: 10.1016/j.devcel.2021.12.005

source: www.cam.ac.uk


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Millipedes ‘As Big As Cars’ Once Roamed Northern England, Fossil Find Reveals

Millipedes ‘As Big As Cars’ Once Roamed Northern England, Fossil Find Reveals

The largest-ever fossil of a giant millipede – as big as a car – has been found on a beach in the north of England.

The fossil – the remains of a creature called Arthropleura – dates from the Carboniferous Period, about 326 million years ago, over 100 million years before the Age of Dinosaurs. The fossil reveals that Arthropleura was the largest-known invertebrate animal of all time, larger than the ancient sea scorpions that were the previous record holders.

The specimen, found on a Northumberland beach about 40 miles north of Newcastle, is made up of multiple articulated exoskeleton segments, broadly similar in form to modern millipedes. It is just the third such fossil ever found. It is also the oldest and largest: the segment is about 75 centimetres long, while the original creature is estimated to have measured around 2.7 metres long and weighed around 50 kilograms. The results are reported in the Journal of the Geological Society.

 Credit: J.W. Schneider. TU Bergakademie Freiberg

The fossil was discovered in January 2018 in a large block of sandstone that had fallen from a cliff to the beach at Howick Bay in Northumberland. “It was a complete fluke of a discovery,” said Dr Neil Davies from Cambridge’s Department of Earth Sciences, the paper’s lead author. “The way the boulder had fallen, it had cracked open and perfectly exposed the fossil, which one of our former PhD students happened to spot when walking by.”

Unlike the cool and wet weather associated with the region today, Northumberland had a more tropical climate in the Carboniferous Period, when Great Britain lay near the Equator. Invertebrates and early amphibians lived off the scattered vegetation around a series of creeks and rivers. The specimen identified by the researchers was found in a fossilised river channel: it was likely a moulted segment of the Arthropleura’s exoskeleton that filled with sand, preserving it for hundreds of millions of years.

The fossil was extracted in May 2018 with permission from Natural England and the landowners, the Howick Estate. “It was an incredibly exciting find, but the fossil is so large it took four of us to carry it up the cliff face,” said Davies.

The fossil was brought back to Cambridge so that it could be examined in detail. It was compared with all previous records and revealed new information about the animal’s habitat and evolution. The animal can be seen to have only existed in places that were once located at the Equator, such as Great Britain during the Carboniferous. Previous reconstructions have suggested that the animal lived in coal swamps, but this specimen showed Arthropleura preferred open woodland habitats near the coast.

There are only two other known Arthropleura fossils, both from Germany, and both much smaller than the new specimen. Although this is the largest Arthropleura fossil skeleton ever found, there is still much to learn about these creatures. “Finding these giant millipede fossils is rare, because once they died, their bodies tend to disarticulate, so it’s likely that the fossil is a moulted carapace that the animal shed as it grew,” said Davies. “We have not yet found a fossilised head, so it’s difficult to know everything about them.”

The great size of Arthropleura has previously been attributed to a peak in atmospheric oxygen during the late Carboniferous and Permian periods, but because the new fossil comes from rocks deposited before this peak, it shows that oxygen cannot be the only explanation.

The researchers believe that to get to such a large size, Arthropleura must have had a high-nutrient diet. “While we can’t know for sure what they ate, there were plenty of nutritious nuts and seeds available in the leaf litter at the time, and they may even have been predators that fed off other invertebrates and even small vertebrates such as amphibians,” said Davies.

Arthropleura animals crawled around Earth’s equatorial region for around 45 million years, before going extinct during the Permian period. The cause of their extinction is uncertain, but could be due to global warming that made the climate too dry for them to survive, or to the rise of reptiles, who out-competed them for food and soon dominated the same habitats.

The fossil will go on public display at Cambridge’s Sedgwick Museum in the New Year.

Neil Davies is a Fellow of Churchill College, Cambridge. The research was supported in part by the Natural Environment Research Council.

Reference:
Neil S. Davies et al. ‘
The largest arthropod in Earth history: insights from newly discovered Arthropleura remains (Serpukhovian Stainmore Formation, Northumberland, England).’ Journal of the Geological Society (2021). DOI: 10.1144/jgs2021-115

All photographs credit: Neil Davies

source: www.cam.ac.uk

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Could Acid-Neutralising Life-Forms Make Habitable Pockets In Venus’ Clouds?

Could Acid-Neutralising Life-Forms Make Habitable Pockets In Venus’ Clouds?

Venus from Mariner 10
Venus from Mariner 10 Credit: NASA/JPL-Caltech

 

A new study shows it’s theoretically possible. The hypothesis could be tested soon with proposed Venus-bound missions.

 

If life is there, how does it propagate in an environment as dry as the clouds of Venus?

Paul Rimmer

It’s hard to imagine a more inhospitable world than our closest planetary neighbour. With an atmosphere thick with carbon dioxide, and a surface hot enough to melt lead, Venus is a scorched and suffocating wasteland where life as we know it could not survive. The planet’s clouds are similarly hostile, blanketing the planet in droplets of sulphuric acid caustic enough to burn a hole through human skin.

And yet, a new study, published in the Proceedings of the National Academy of Sciences, supports the long-held theory that, if life exists, it might make a home in Venus’ clouds. The study’s authors, from MIT, Cardiff University, and the University of Cambridge, have identified a chemical pathway by which life could neutralise Venus’ acidic environment, creating a self-sustaining, habitable pocket in the clouds.

Within Venus’ atmosphere, scientists have long observed puzzling anomalies — chemical signatures that are hard to explain, such as small concentrations of oxygen and nonspherical particles unlike sulphuric acid’s round droplets. Perhaps most puzzling is the presence of ammonia, a gas that was tentatively detected in the 1970s, and that by all accounts should not be produced through any chemical process known on Venus.

In their new study, the researchers modelled a set of chemical processes to show that if ammonia is indeed present, the gas would set off a cascade of chemical reactions that not only neutralises surrounding droplets of sulphuric acid, but also would explain most of the anomalies observed in Venus’ clouds. As for the source of ammonia itself, the authors propose the most plausible explanation is of biological origin, rather than an non-biological source such as lightning or volcanic eruptions.

The chemistry suggests that life could be making its own environment on Venus.

This hypothesis is testable, and the researchers provide a list of chemical signatures for future missions to measure in Venus’ clouds, to either confirm or contradict their idea.

“No life that we know of could survive in the Venus droplets,” said study co-author Sara Seager, from MIT. “But the point is, maybe some life is there, and is modifying its environment so that it is livable.”

‘Life on Venus’ was a trending phrase last year, when scientists including Seager and her co-authors reported the detection of phosphine in the planet’s clouds. On Earth, phosphine is a gas that is produced mainly through biological interactions. The discovery of phosphine on Venus leaves room for the possibility of life. Since then, however, the discovery has been widely contested.

“The phosphine detection ended up becoming incredibly controversial,” said Seager. “But phosphine was like a gateway, and there’s been this resurgence in people studying Venus.”

Inspired to look more closely, co-author Dr Paul Rimmer from Cambridge’s Department of Earth Sciences began combing through data from past missions to Venus. In these data, he identified anomalies, or chemical signatures, in the clouds that had gone unexplained for decades. In addition to the presence of oxygen and nonspherical particles, anomalies included unexpected levels of water vapor and sulphur dioxide.

Rimmer proposed the anomalies might be explained by dust. He argued that minerals, swept up from Venus’ surface and into the clouds, could interact with sulphuric acid to produce some, but not all of the observed anomalies. He showed the chemistry checked out. But the physical requirements were unfeasible: A massive amount of dust would have to loft into the clouds to produce the observed anomalies. “The hypothesis requires either large amounts of water-rich volcanism or transport of a lot of dust rich in hydroxide salts,” he said. “So far, I have been unable to identify a plausible mineralogy for this mechanism.”

The researchers wondered if the anomalies could be explained by ammonia. In the 1970s, the gas was tentatively detected in the planet’s clouds by the Venera 8 and Pioneer Venus probes. The presence of ammonia, or NH3, was an unsolved mystery.

“Ammonia shouldn’t be on Venus,” said Seager. “It has hydrogen attached to it, and there’s very little hydrogen around. Any gas that doesn’t belong in the context of its environment is automatically suspicious for being made by life.”

If the team were to assume that life was the source of ammonia, could this explain the other anomalies in Venus’ clouds? The researchers modeled a series of chemical processes in search of an answer.

They found that if life were producing ammonia in the most efficient way possible, the associated chemical reactions would naturally yield oxygen. Once present in the clouds, ammonia would dissolve in droplets of sulphuric acid, effectively neutralising the acid to make the droplets relatively habitable. The introduction of ammonia into the droplets would transform their formerly round, liquid shape into more of a nonspherical, salt-like slurry. Once ammonia dissolved in sulphuric acid, the reaction would trigger any surrounding sulphur dioxide to dissolve as well.

The presence of ammonia could explain most of the major anomalies seen in Venus’ clouds. The researchers also show that sources such as lightning, volcanic eruptions, and even a meteorite strike could not chemically produce the amount of ammonia required to explain the anomalies. Life, however, might.

In fact, the team notes that there are life-forms on Earth — particuarly in our own stomachs — that produce ammonia to neutralise and make livable an otherwise highly acidic environment.

“This hypothesis predicts that the tentative detection of oxygen and ammonia in Venus’s clouds by probes will be confirmed by future missions, and that both life and ammonium sulphite and sulphate are present in the largest droplets in the lower part of the cloud,” said Rimmer, who is also affiliated with the Cavendish Laboratory and the MRC Laboratory for Molecular Biology. “There are also several remaining mysteries: if life is there, how does it propagate in an environment as dry as the clouds of Venus? If it is making water when neutralising the droplets, what happens to that water? If life is not in the clouds of Venus, what alternative abiotic chemistry is taking place to explain this depletion of sulphur dioxide and water? Future lab experiments and missions will be able to test these predictions and may shed light on these outstanding mysteries.”

Scientists may have a chance to check for the presence of ammonia, and signs of life, in the next several years with the Venus Life Finder Missions, a set of proposed privately funded missions that plan to send spacecraft to Venus to measure its clouds for ammonia and other signatures of life.

This research was supported in part by the Simons Foundation, the Change Happens Foundation, and the Breakthrough Initiatives.

Reference:
William Bains et al. ‘Production of ammonia makes Venusian clouds habitable and explains observed cloud-level chemical anomalies.’ Proceedings of the National Academy of Sciences (2021). DOI: 10.1073/pnas.2110889118

Adapted from an MIT news story.

source: www.cam.ac.uk

Omicron May Be Significantly Better At Evading Vaccine-Induced Immunity, But Less Likely To Cause Severe Disease

Omicron May Be Significantly Better At Evading Vaccine-Induced Immunity, But Less Likely To Cause Severe Disease

Covid-19 seen under the microscope. SARS-CoV-2, 3D rendering
SARS-CoV-2 3D rendering Credit: Naeblys (Getty Images)

 

The Omicron variant of SARS-CoV-2 may be significantly better than previous variants at evading vaccine-induced antibodies, according to new research from Cambridge – but preliminary evidence suggests it is less likely to cause severe COVID-19 illness in the lungs.

 

Omicron’s mutations present the virus with a double-edged sword: it’s got better at evading the immune system, but it might have lost some of its ability to cause severe disease

Ravi Gupta

As the SARS-CoV-2 virus replicates and spreads, errors in its genetic code can lead to changes in the virus. On 26 November 2021, the World Health Organization designated the variant B.1.1.529, first identified in South Africa, a variant of concern, named Omicron. The variant carries a large number of mutations, leading to concern that it will leave vaccines less effective at protecting against infection and illness.

Working in secure conditions, a team led by Professor Ravi Gupta at the Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge, created synthetic viruses – known as ‘pseudoviruses’ – that carried key mutations found in the Delta and Omicron strains. They used these to study the virus’s behaviour.

The team, which included collaborators from Japan, including Dr Kei Sato of Tokyo University, has released its data ahead of peer review because of the urgent need to share information relating to the pandemic, and particularly the new Omicron variant.

Professor Gupta and colleagues tested the pseudoviruses against blood samples donated to the NIHR COVID-19 BioResource. The blood samples were from vaccinated individuals who had received two doses of either the AstraZeneca (ChAdOx-1) or Pfizer (BNT162b2) vaccines.

On average, Omicron required around a ten-fold increase in the concentration of serum antibody in order to neutralise the virus, compared to Delta. Of particular concern, antibodies from the majority of individuals who had received two doses of the AstraZeneca vaccine were unable to neutralise the virus. The data were confirmed in live virus experiments.

Reassuringly, however, following a third dose of the Pfizer vaccine, both groups saw a significant increase in neutralisation.

Professor Gupta said: “The Omicron variant appears to be much better than Delta at evading neutralising antibodies in individuals who have received just two doses of the vaccine. A third dose ‘booster’ with the Pfizer vaccine was able to overturn this in the short term, though we’d still expect a waning in immunity to occur over time.”

Spike proteins on the surface of SARS-CoV-2 bind to ACE2, a protein receptor found on the surface of cells in the lung. Both the spike protein and ACE2 are then cleaved, allowing genetic material from the virus to enter the host cell. The virus manipulates the host cell’s machinery to allow the virus to replicate and spread.

To see how effective Omicron is at entering our cells, the team used their pseudoviruses to infect cells in lung organoids – ‘mini-lungs’ that model parts of the lung. Despite having three mutations that were predicted to favour the spike cleavage, the researchers found the Omicron spike protein to be less efficient than the Delta spike at cleaving the ACE2 receptor and entering the lung cells.

In addition, once Omicron had entered the cells, it was also less able than Delta to cause fusion between cells, a phenomenon associated with impaired cell-to-cell spread. Fused cells are often seen in respiratory tissues taken following severe disease. Indeed, when the team used a live Omicron virus and compared it to Delta in a spreading infection experiment using lung cells, Omicron was significantly poorer in replication, confirming the findings regarding impaired entry.

Professor Gupta added: “We speculate that the more efficient the virus is at infecting our cells, the more severe the disease might be. The fact that Omicron is not so good at entering lung cells and that it causes fewer fused cells with lower infection levels in the lab suggests this new variant may cause less severe lung-associated disease.

“While further work is needed to corroborate these findings, overall, it suggests that Omicron’s mutations present the virus with a double-edged sword: it’s got better at evading the immune system, but it might have lost some of its ability to cause severe disease.”

However, Professor Gupta urged caution.

“Omicron still represents a major public health challenge. Individuals who have only received two doses of the vaccine – or worse, none at all – are still at significant risk of COVID-19, and some will develop severe disease. The sheer number of new cases we are seeing every day reinforces the need for everyone to get their boosters as quickly as possible.”

The research was supported by Wellcome and the NIHR Cambridge Biomedical Research Centre.

Reference
Meng, B, et al. SARS-CoV-2 Omicron neutralising antibody evasion, replication and cell-cell fusion.

source: www.cam.ac.uk


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