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Science News for September 25, 2020


New method allows precise gene control by light

A novel optical switch enables precise control over the lifespan of genetic copies by attaching aptamers to molecular markers. This method can be used to specifically switch off practically every mRNA molecule in a cell in a controlled manner, opening up new avenues for investigating dynamic processes in living cells.

SourceUniversity of Bonn·JournalNature Communications·DateSep 25, 2020

FSU researchers help develop sustainable polymers

Researchers at FSU have made new discoveries on the effects of temperature on sustainable polymers, which may help produce environmentally friendly plastics. The team found that certain polymers crystallize in unusual ways when cooled, leading to increased toughness and potential applications for sustainable plastic production.

SourceFlorida State University·JournalMacromolecules·DateSep 25, 2020

Not just a phase

University of Pittsburgh professors Nathan Youngblood and Feng Xiong receive $380,000 to study phase-change materials for high-speed computing and optical storage applications. The project aims to overcome the challenges in electrically-controlled optical memory devices.

Nerve cells let others "listen in"

A recent study published in Neuron reveals that the brain's signal transmission is regulated by the environment, with certain processes allowing for more open communication between neurons. The researchers found that astrocytes, specialized cells in the brain, play a crucial role in shielding communication to some extent.

SourceUniversity of Bonn·JournalNeuron·DateSep 25, 2020

Contact tracing study results recommend consistent wearing of masks, handwashing, and social distancing in public to protect against SARS-CoV-2 infection

A contact tracing study found that wearing masks all the time reduced COVID-19 infection risk by 77% compared to not wearing them. Consistent practice of handwashing and social distancing also significantly reduced the risk, with benefits observed when maintaining at least a 1-metre distance from patients.

University of Minnesota receives seed funding for clinical study of metformin to treat, prevent COVID-19

Researchers at University of Minnesota Medical School have received seed funding for a clinical study investigating the use of metformin as a COVID-19 treatment and prevention method. The team aims to definitively study whether or not metformin prevents SARS-CoV-2 infection and severe COVID-19 disease, with potential benefits of reduci...

Coldest Northern Hemisphere temperature, first recorded by UW, officially confirmed

The University of Wisconsin-Madison has officially confirmed the lowest recorded temperature in the Northern Hemisphere, a chilly -93.2 degrees Fahrenheit. This extreme reading was first detected in Greenland in 1991 and has been verified through rigorous review processes by the World Meteorological Organization.

SourceUniversity of Wisconsin-Madison·JournalQuarterly Journal of the Royal Meteorological Society·DateSep 25, 2020

Women could conceive after ovarian tumors

A study from Karolinska Institutet in Sweden found that women receiving fertility-sparing surgery for treatment of borderline ovarian tumours were able to have children, with most preserving natural fertility. The study also showed similar survival rates as those who underwent radical surgical cancer treatment.

SourceKarolinska Institutet·JournalFertility and Sterility·DateSep 25, 2020

COVID-19 spurs anxious, upsetting dreams

Research published by the American Psychological Association found that COVID-19 is affecting women's dreams more strongly than men's, with increased anxiety and negative emotions. The studies suggest that changes in dream frequency, tone, and content can help identify those at risk for mental health problems during the pandemic.

First measurements of radiation levels on the moon

Scientists from Chinese and German institutions report on time-resolved measurements of lunar surface radiation, revealing an equivalent dose rate of about 60 microsieverts per hour. This poses considerable exposure for humans, highlighting the need for shielding during long-term moon stays.

SourceKiel University·JournalScience Advances·DateSep 25, 2020

Low level alcohol use during pregnancy can impact child's brain development

Research finds that even low levels of alcohol consumption during pregnancy can impact a child's brain development, leading to anxiety, depression, and poor attention. The study, published in the American Journal of Psychiatry, suggests that any alcohol use during pregnancy is associated with subtle yet significant behavioural and psyc...

SourceUniversity of Sydney·JournalAmerican Journal of Psychiatry·DateSep 25, 2020

COVID-19 news from Annals of Internal Medicine

The National Institutes of Health COVID-19 Treatment Guidelines Panel has expressed uncertainty about the efficacy and safety of convalescent plasma for treating COVID-19. The panel's analysis, published in Annals of Internal Medicine, highlights the need for more data before making recommendations on the treatment.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateSep 25, 2020

RAP tag: A new protein purification approach

Researchers from the University of Tsukuba have developed a new tagging system for detecting and purifying proteins in plant cells, using a short sequence called RAP tag. The approach shows high affinity and specificity, making it a powerful tool for protein purification, particularly at low expression levels.

SourceUniversity of Tsukuba·JournalFrontiers in Plant Science·DateSep 25, 2020

Ultrapotent compound may help treat C. diff, reduce recurrence

Researchers have created ultrapotent compounds to treat Clostridioides difficile (C. diff), a leading cause of healthcare-associated infections in the US. The compounds show significant advantages over current antibiotics, including minimum inhibitory concentration values as low as 0.003 μg/mL and improved prevention of recurrence.

SourcePurdue University·JournalJournal of Medicinal Chemistry·DateSep 25, 2020

Study demonstrates SARS-CoV-2 emergence was associated with a large drop in the circulation of other respiratory viruses during the first wave

A study found that SARS-CoV-2 emergence was associated with a significant decrease in the circulation of other common respiratory viruses. Patients with COVID-19 had worse clinical outcomes and were more likely to develop pneumonia compared to those with co-infections.

The male Y chromosome does more than we thought

A recent study published in Scientific Reports has found that Y chromosome genes may regulate cellular functions differently than previously thought, potentially explaining why men are more susceptible to certain diseases like Covid-19. The discovery could also provide insights into the underlying mechanisms of male health disparities.

SourceUniversity of Montreal·JournalScientific Reports·DateSep 25, 2020

Study shows Massachusetts response to COVID-19 in nursing homes helped stem infection rate

A study found that adherence to infection control processes, including proper wearing of PPE and cohorting strategies, was significantly associated with declines in weekly infection and mortality rates. The Massachusetts COVID-19 response in nursing homes helped stem the rate of infection among vulnerable residents through a state-wide...

SourceHebrew SeniorLife Hinda and Arthur Marcus Institute for Aging Research·JournalJournal of the American Geriatrics Society·DateSep 25, 2020

Criticism of COVID-19 models by democratic political leaders may erode public trust in science

A study finds that criticism of COVID-19 models by Democratic elites undermines public support for the models and science more broadly. Republicans have little impact on public attitudes towards models. Scientists should acknowledge model uncertainty and convey what is known about the virus to build trust.

Marine heatwaves are human made

Marine heatwaves have increased significantly due to global warming, with major events becoming more frequent and prolonged. The probability of such events has risen massively, posing a serious threat to marine ecosystems and their ability to recover.

SourceUniversity of Bern·JournalScience·DateSep 25, 2020