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Science News for April 15, 2021


HIV has been had

Researchers at Tokyo Medical and Dental University develop novel molecules that mimic CD4 proteins, preventing HIV particles from entering immune cells. These compounds show promise in reducing side effects while increasing effectiveness in stopping viral proliferation.

SourceTokyo Medical and Dental University·JournalJournal of Medicinal Chemistry·DateApr 15, 2021

One year of SARS-CoV-2 evolution

Research identifies SARS-CoV-2 variants emerging from immunocompromised hosts, leading to increased frequency of mutations. The study highlights the importance of monitoring genetic changes in SARS-CoV-2 to design effective vaccines and diagnostics.

SourceMicrobiology Society·JournalJournal of General Virology·DateApr 15, 2021

Reliable COVID-19 short-term forecasting

Researchers developed a new model using the SEIR framework to project daily COVID-19 cases, achieving accuracy and reliability. The model forecasts future infections under three scenarios, with limitations due to data accuracy and assumptions about transmission rates.

SourceTexas A&M University·JournalPLOS ONE·DateApr 15, 2021

Measuring neutron star squeezability

Researchers used NASA's NICER telescope on the International Space Station to measure the size of PSR J0740+6620, the most massive known neutron star. The team's findings provide insights into the squeezability of matter in neutron star cores, shedding light on what happens when neutrons break down into smaller particles.

Child vaccination rates declined during COVID-19 pandemic

A Kaiser Permanente study found that child vaccination rates declined significantly during the COVID-19 pandemic, with measles vaccination coverage remaining substantially reduced in many age groups. The decline was more severe and persistent in older children, highlighting concerns about vaccine-preventable diseases.

SourceKaiser Permanente·JournalPEDIATRICS·DateApr 15, 2021

New benefits from anti-diabetic drug metformin

Researchers at Kumamoto University discovered that metformin prolongs survival of mice with non-diabetic chronic kidney disease by reducing kidney function and inflammation. The study suggests that a combination of metformin and losartan may be beneficial for patients with ND-CKD.

SourceKumamoto University·JournalScientific Reports·DateApr 15, 2021

Couples and young-onset dementia: Study of coping offers hope for new interventions

A study published in JAMA Network Open explores the experiences of individuals with young-onset dementia and their partners, highlighting the importance of open communication and mutual problem-solving. The research team developed a couples-based framework to describe coping patterns, which can inform new interventions and increase qua...

SourceMassachusetts General Hospital·JournalJAMA Network Open·DateApr 15, 2021

CityU biologists discover super-enhancers that switch on breast cancer genes

Researchers have identified specific super-enhancers that stimulate the activity of critical cancer genes in triple-negative breast cancer (TNBC). The study reveals that deleting certain super-enhancers can reduce tumour cell growth and improves survival chances. Dr Rebecca Chin and Dr Wang Xin's findings may lead to the development of...

SourceCity University of Hong Kong·JournalNature Communications·DateApr 15, 2021

Imaging agent enables better monitoring of patients with bacterial infections

Scientists developed an imaging agent that enables safe and rapid detection of Enterobacterales infections in patients, distinguishing between drug-susceptible and resistant strains. The agent revealed sites of infection, monitored response to antibiotics, and identified secondary bacterial infections.

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience Translational Medicine·DateApr 15, 2021

Drought-induced mortality of conifers

Researchers from Basel and Würzburg investigated spruce trees' reaction to extreme heat and drought, finding a sudden collapse of the water-conducting system leading to tree death. The study reveals that dehydration occurs abruptly after exceeding a species-specific threshold value, causing trees to be unable to recover.

SourceUniversity of Würzburg·JournalProceedings of the National Academy of Sciences·DateApr 15, 2021

Study estimates duration of employment loss experienced by adults with kidney failure

A new study estimates the years of employment loss experienced by working-aged adults with kidney failure, finding that most lost time is due to patients' loss of life expectancy. The study analyzed data from patients initiating dialysis in Taiwan and found that men had a higher rate of employment than women.

SourceAmerican Society of Nephrology·JournalClinical Journal of the American Society of Nephrology·DateApr 15, 2021

A method to assess COVID-19 transmission risks in indoor settings

MIT researchers developed a publicly available model to estimate COVID-19 transmission risks in indoor settings, considering variables like people number, space size, activity type, mask wearing, and ventilation rates. The model provides a detailed guideline for policymakers, businesses, schools, and individuals to gauge their own risks.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateApr 15, 2021

CHOP-led research study identifies key target in treatment-resistant hemophilia A

A CHOP-led research study found that B cell activating factor (BAFF) levels are elevated in patients resistant to coagulation protein therapy, suggesting a potential target for new treatments. Anti-BAFF therapies combined with immune tolerance therapies may tame the immune response in some patients with severe hemophilia A.

SourceChildren's Hospital of Philadelphia·JournalJournal of Clinical Investigation·DateApr 15, 2021

The architect of genome folding

Researchers discovered HP1a as an epigenetic regulator that establishes the global structure of the genome in early Drosophila embryos. The study used powerful genetics and 3D genome modeling to show that HP1a is required for proper chromatin organization at multiple hierarchical levels during embryonic development.

SourceMax-Planck-Gesellschaft·JournalNature·DateApr 15, 2021

CO2 conversion using a new Power-to-X system

A new pilot-scale project aims to produce biomethane from renewable electricity and CO2 in a cost-effective system. The InjectMe project, funded by the Danish Energy Agency, will test a biological methanation system that converts electricity and biogas into natural-gas-quality biomethane.

The CNRS 2021 Innovation Medal laureates

The four CNRS 2021 Innovation Medal laureates have developed diverse projects, from ecological engineering to sustainable chemistry and regenerative medicine. Their work has led to significant technological innovations, such as marine ecological engineering platforms and micro-magnets for hybrid-electric vehicles.

SourceCNRS·DateApr 15, 2021

A neuromagnetic view through the skull

A team of researchers has successfully developed a highly sensitive magnetoencephalography (MEG) technology that can detect even fast brain oscillations produced in response to single sensory stimuli. This breakthrough enables noninvasive observation of nerve cells transmitting information, shedding light on factors such as alertness a...

SourcePhysikalisch-Technische Bundesanstalt (PTB)·JournalProceedings of the National Academy of Sciences·DateApr 15, 2021

Want to be robust at 40-plus? Meeting minimum exercise guidelines won't cut it

A new study led by UCSF reveals that maintaining physical activity during young adulthood, especially at higher levels than previously recommended, is crucial in preventing hypertension. Among the four groups, Black men were found to be the most active in early adulthood but saw significant declines in exercise intake by age 60, mirror...

SourceUniversity of California - San Francisco·JournalAmerican Journal of Preventive Medicine·DateApr 15, 2021

Potential ways to improve survival for cancer patients who receive fragmented care

A new study identifies risk factors for readmission to a different hospital for cancer patients who received surgical removals, associated with a 50% increased odds of dying. Risk factors include living far away from the original hospital and being older or white, highlighting the need for better care coordination.

SourceAmerican College of Surgeons·JournalJournal of the American College of Surgeons·DateApr 15, 2021

Acta Pharmaceutica Sinica B Volume 11, Issue 3 publishes

This issue of APSB features studies on protecting against doxorubicin-induced cardiotoxicity via increasing YAP1 expression, as well as investigating alternative strategies to downregulate PD-L1 in gastric cancer cells. The journal also publishes research on a novel injectable micelle-hydrogel hybrid for localized drug delivery and tar...

SourceCompuscript Ltd·JournalActa Pharmaceutica Sinica B·DateApr 15, 2021

New research shows breast cancer treatment in patients over age 70 can be safely reduced

A study published in JAMA Network Open found that treating older patients with early-stage breast cancer did not improve survival rates and may cause harm. Researchers analyzed data from over 3,000 women aged 70 and found that omitting treatments like sentinel lymph node biopsy and radiotherapy did not affect recurrence or survival rates.

SourceUniversity of Pittsburgh·JournalJAMA Network Open·DateApr 15, 2021

Uncovering the secrets of some of the world's first color photographs

A team of researchers from EPFL's Audiovisual Communications Laboratory used historic photographic plates to study the original light and colors of century-old scenes. They found that Lippmann's method captured 26-64 spectral samples, far more than modern techniques, and were able to recreate the original light using an algorithm.

SourceEcole Polytechnique Fédérale de Lausanne·JournalProceedings of the National Academy of Sciences·DateApr 15, 2021

A new drought monitoring approach: Vector Projection Analysis (VPA)

Researchers at UNIST propose a new drought monitoring method using Vector Projection Analysis (VPA), which can comprehensively investigate drought disasters. The approach captures varied climate and environmental characteristics, showing good agreement with surface-based indices and drought references across continental scales.

SourceUlsan National Institute of Science and Technology(UNIST)·JournalRemote Sensing of Environment·DateApr 15, 2021

Keeping fit with HIIT really does work

Low-volume HIIT (less than 20 minutes total exercise time) yields comparable improvements to longer interventions despite requiring significantly less time. This approach is especially beneficial for individuals with busy schedules who struggle to meet current physical activity guidelines.

SourceThe Physiological Society·JournalThe Journal of Physiology·DateApr 15, 2021

Modelling ancient antarctic ice sheets helps us see future of global warming

Researchers at UMass Amherst used a novel approach to model ancient Antarctic ice sheets, revealing a thick but diminished ice sheet under mid-Miocene warmest conditions. The study suggests that greater precipitation led to a thickening of the ice sheet's interior regions, with potential implications for future sea level rise.

SourceUniversity of Massachusetts Amherst·JournalEarth and Planetary Science Letters·DateApr 15, 2021

How changing income assistance payment schedules impact drug use and related harm

A recent study published in The Lancet Public Health investigates the effects of altering income assistance payment schedules on drug use and related harms. Varying the timing and frequency of payments reduced escalations in drug use around government payment days, but also had unintended consequences that increased exposure to violence.

SourceUniversity of British Columbia·JournalThe Lancet Public Health·DateApr 15, 2021

Materials Research Society Fellow

David C. Martin, a University of Delaware professor, is advancing novel polymeric materials to integrate electronics with human brain tissue. He has been named a Materials Research Society Fellow for his work on conjugated polymers for interfacing electronic biomedical devices with living tissue.

How can we conserve Seychelles giant trevallies?

New research reveals that Seychelles giant trevally's home range increases as it grows, emphasizing the need for long-term tracking and monitoring of threatened species. The study suggests conserving nursery areas like St Joseph Atoll to protect the next generation and finding a balance between harvesting and catch-and-release fishing.

SourceSave Our Seas Foundation·JournalMarine Ecology Progress Series·DateApr 15, 2021

Investigating heavy quark physics with the LHCb experiment

The LHCb experiment has probed the nature of physics for ten years, examining CP violation and symmetry between matter and antimatter. The review highlights its achievements in studying heavy quarks and their interactions, shedding light on the universe's fundamental questions.

SourceSpringer·JournalThe European Physical Journal H·DateApr 15, 2021

Understanding the growth of disease-causing protein fibres

Researchers from University of Bath and ISIS Neutron and Muon Source invent technique to directly measure amyloid fibril growth rate in solution. This breakthrough is crucial for understanding the diseases associated with amyloid fibrils, which are deposits of proteins linked to Alzheimer's, Parkinson's, and Type 2 diabetes.

SourceUniversity of Bath·JournalRSC Chemical Biology·DateApr 15, 2021

Researchers generate human-monkey chimeric embryos

Scientists have successfully generated human-monkey chimeric embryos, allowing them to study human development and disease under in vivo conditions. The research has the potential to provide new insights into evolutionary barriers to chimera generation and improve model systems for studying human biology.

SourceCell Press·JournalCell·DateApr 15, 2021

One dose of SARS-CoV-2 mRNA vaccine may induce immunity in recovered patients, suggests new analysis

A new study found that a single dose of the Pfizer or Moderna mRNA vaccine can stimulate an immune response in people who have previously recovered from COVID-19. The vaccine's ability to generate antibodies and B cell responses was shown to be effective against the South African variant.

Transparent nanolayers for more solar power

Researchers at Forschungszentrum Jülich developed a nanostructured, transparent material for the front of solar cells, achieving efficiencies of up to 23.99%, surpassing crystalline silicon cells. The new design offers passivation, transparency, and high electrical conductivity, paving the way for large-scale industrial production.

SourceForschungszentrum Juelich·JournalNature Energy·DateApr 15, 2021

Agricultural trade across US states can mitigate economic impacts of climate change

A new study from the University of Illinois finds that US interstate trade can reduce the economic impact of climate change on crop profit, with potential benefits worth up to $14.5 billion by 2050. This approach shifts the paradigm compared to current forecasts, which only consider local drought impacts.

eBird data used to shape eagle management

A new study uses eBird data to identify areas of low Bald Eagle abundance, paving the way for citizen-science data to shape policy decisions. The research finds that eBird data is the most accurate and reliable source for assessing eagle populations, providing valuable insights for conservation efforts.

SourceCornell University·JournalJournal of Applied Ecology·DateApr 15, 2021

BIO Integration Journal, Volume 2, Issue Number 1, publishes

The journal publishes an editorial, two mini review articles, two opinion articles, and an interview on various topics including COVID-19 diagnosis, dental implant biomaterials, ferroptosis resistance in cancer, and sonoporation. BIO Integration Journal is a peer-reviewed, open access international journal dedicated to modern medicine.

SourceCompuscript Ltd·JournalBIO Integration·DateApr 15, 2021

New evaluation estimates absolute abundance and preservation rate of Tyrannosaurus rex

A new study estimates that nearly 20,000 T. rex lived concurrently, with a total of 2.5 billion individuals over their entire existence. The authors used Darmuth's Law to estimate population-level traits and the rate of fossil preservation, finding that only about 1 in 80 million T. rex survived as fossilized remains.