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Science News for September 22, 2022


Endoscopy COVID-19 testing requirements disproportionately impact medically underserved communities

Medically underserved communities face significant barriers to endoscopy-related COVID-19 testing, potentially worsening health care disparities. Researchers recommend addressing these challenges by mailing test kits or offering rapid testing to mitigate delays in diagnosis and management of gastrointestinal illnesses.

SourceUniversity of Minnesota Medical School·JournalGastroenterology·TypeSurvey·DateSep 22, 2022

Villaseñor co-authors PNAS paper on extinction of megafauna

A study co-authored by Amelia Villaseñor reveals that the extinction of megafauna in North America more than 10,000 years ago resulted in a reorganized, vulnerable ecosystem. The research found that surviving mammal communities were affected, with vacant niches and changes in dietary habits.

SourceUniversity of Arkansas·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateSep 22, 2022

Big planets get a head start in pancake-thin nurseries

A study at Europlanet Science Congress 2022 found that super-thin planet nurseries can accelerate the formation of big planets. The team observed a remarkably thin disc of dust and gas around a young star, where large particles settled into a dense midplane, creating conditions favourable for planetary growth.

Warming oceans are changing Australian reef fish populations

Researchers analyzed data from Australia's Reef Life Survey and two major reef monitoring programs to understand the effects of warming waters on reef fish populations. The study found that temperature changes had a greater impact on temperate reefs, while tropical reefs were more affected by habitat changes such as coral bleaching.

SourceCell Press·JournalCurrent Biology·TypeComputational simulation/modeling·DateSep 22, 2022

UK trial shows remission from type 2 diabetes possible even in people with lower body weight – supporting idea that everyone has a ‘personal fat threshold’

A UK trial found that 70% of people with normal weight and type 2 diabetes entered remission by losing around 10% of their body weight, supporting the concept of a personal fat threshold. The study showed that even though participants had normal BMI, they had higher levels of fat in their liver and pancreas than healthy controls.

Gut microbiomes help bears with very different diets reach the same size

A recent study of Alaskan brown bears reveals that their gut microbiomes play a crucial role in supporting health and achieving comparable size despite eating vastly different diets. The research sheds light on the importance of diverse dietary niches for bears, which can help them extract nutrition from various food sources.

SourceNorth Carolina State University·JournalScientific Reports·TypeObservational study·DateSep 22, 2022

University of Colorado research shows that telehealth follow-up after gall bladder surgery is just as effective as in-person clinic visits

A new research study by Danielle Abbitt, MD, shows that telehealth follow-up appointments are just as effective as in-clinic visits for detecting and addressing postoperative complications. The study found no significant difference in complication rates or emergency department utilization between telehealth and in-person follow-ups.

SourceUniversity of Colorado Anschutz Medical Campus·JournalSurgical Endoscopy·DateSep 22, 2022

Gwangju Institute of Science and Technology researchers design durable organic semiconductor photocathodes with metal foil encapsulation

Researchers from Gwangju Institute of Science and Technology design a novel approach to create durable organic semiconductor photocathodes, enabling high-efficiency conversion of solar energy to hydrogen. The developed photocathodes demonstrate remarkable stability and can produce hydrogen under actual sunlight.

SourceGIST (Gwangju Institute of Science and Technology)·JournalJournal of Materials Chemistry A·TypeExperimental study·DateSep 22, 2022

BU study: Monthly caps on out-of-pocket costs would provide financial relief to privately insured patients

A new study found that placing a monthly cap on out-of-pocket costs for commercially insured patients could lower their highest monthly healthcare bills by 50-60%. A $500 monthly limit would affect about 25% of enrollees and reduce in-network OOP costs over a year by 46%, while a $250 limit would show a 51% reduction.

SourceBoston University School of Public Health·JournalJAMA Network Open·TypeObservational study·DateSep 22, 2022

Babies react to taste and smell in the womb – new research

Scientists recorded facial expressions of 100 unborn babies to see how they reacted to carrot and kale flavours. Fetuses exposed to carrot showed more laughter-like responses, while those exposed to kale showed more crying-like responses. This study could help understand the development of human taste and smell receptors.

SourceAston University·JournalPsychological Science·TypeExperimental study·DateSep 22, 2022

Ultracold circuits

Researchers at the University of Basel have achieved a record low temperature of 220 microkelvin by cooling an electric circuit made of copper on a silicon chip using magnetic fields and an improved thermometer. This breakthrough allows for further study of quantum effects and potential applications in quantum technologies.

SourceUniversity of Basel·JournalPhysical Review Research·TypeExperimental study·DateSep 22, 2022

A new understanding of the neurobiology of impulsivity

A new genetically based score developed by McGill University researchers can identify children at high risk for impulsive behavior with a high degree of accuracy. The score was created by analyzing the co-expression of genes in key brain regions, providing a novel understanding of the neurobiology of impulsivity.

SourceMcGill University·JournalMolecular Psychiatry·DateSep 22, 2022

The Lancet Psychiatry: Adults with a history of childhood trauma can benefit from recommended depression treatments, contrary to current theory

A new study published in The Lancet Psychiatry suggests that adults with a history of childhood trauma can experience symptom improvement after pharmacotherapy, psychotherapy, or combination treatment. Despite previous theories, these common treatments are effective for patients with childhood trauma.

SourceThe Lancet·JournalThe Lancet Psychiatry·TypeMeta-analysis·DateSep 22, 2022

Solvent study solves solar cell durability puzzle

Researchers at Rice University have created stable and efficient halide perovskite solar cells by finding the right solvent design to apply a 2D top layer on top of a 3D bottom layer. The new method achieves high power conversion efficiencies, comparable to commercially available solar cells, while maintaining stability.

SourceRice University·JournalScience·TypeExperimental study·DateSep 22, 2022

Key element for a scalable quantum computer

Physicists at Forschungszentrum Jülich and RWTH Aachen University have successfully transferred electrons over several micrometres on a quantum chip, paving the way for a scalable quantum computer architecture that can support millions of qubits. The 'quantum bus' approach enables the coupling of qubits without the need for extensive c...

SourceForschungszentrum Juelich·Journalnpj Quantum Information·TypeExperimental study·DateSep 22, 2022

A sea change for plastic pollution: New material biodegrades in ocean water

Scientists at the University of California San Diego have developed a new biodegradable polyurethane material that can break down in seawater, reducing plastic pollution. The material was tested in marine environments and found to be degraded by microorganisms, which consume the chemicals as nutrients.

SourceUniversity of California - San Diego·JournalScience of The Total Environment·TypeExperimental study·DateSep 22, 2022

Journal editorial: Regenstrief researcher calls for tailoring colorectal cancer screening for 45-to-49-year-olds

The author suggests that individuals at average risk between 45 and 49 years old should consider non-invasive screening alternatives, such as fecal immunochemical tests or stool DNA testing. This approach would benefit others who need more invasive screening resources and reduce the strain on colonoscopy services.

SourceRegenstrief Institute·JournalClinical Gastroenterology and Hepatology·DateSep 22, 2022

Shedding light on the happy hormone

A novel fluorescent sensor has been developed to visualize the release of oxytocin, also known as the 'happy hormone', in living animals. The sensor, called MTRIA OT, allows for real-time measurement of extracellular oxytocin dynamics in the brain, revealing variability in OT levels dependent on behavioral and physical conditions.

SourceOsaka University·JournalNature Methods·TypeImaging analysis·DateSep 22, 2022

A swarm of 3D printing drones for construction and repair

A team of Swiss researchers has developed Aerial Additive Manufacturing (AAM), a system that uses flying drones to print materials for construction projects. The technology enables on-site manufacturing and building in difficult-to-access or dangerous locations, such as post-disaster relief construction and tall buildings.

Biologists unveil clues to evolutionary origins of brown-colored algae for health, biofuels research

Brown algae's unique pigments have evolved through a complex genetic pathway, enabling them to harness more light energy than green plants. This discovery could lead to insights into fucoxanthin's health applications and improved photosynthetic efficiency for biofuels production.

SourceColorado State University·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateSep 22, 2022

Scientists publish perspective paper exploring use of artificial intelligence in skin diseases

A team of scientists from China published a perspective paper on the use of AI in skin diseases, highlighting its potential to assist clinicians. They propose several recommendations to improve AI-assisted diagnosis systems, including establishing a robust database and adapting algorithms to existing real-world databases.

SourceHealth Data Science·JournalHealth Data Science·TypeCommentary/editorial·DateSep 22, 2022

A review on mobile sensing in the COVID-19 era

Researchers reviewed mobile sensing designs, outcomes, and limitations to better understand its capacity for remote detection, longitudinal tracking, and exposure tracing. Despite technical and societal challenges, advances in data analytics and machine learning may improve data quality and scalability.

SourceHealth Data Science·JournalHealth Data Science·TypeData/statistical analysis·DateSep 22, 2022

RNA-editing tool a fast, sensitive test for COVID-19

Researchers developed an engineered Cas13 system that detects SARS-CoV-2 in biological samples with high sensitivity and speed. The new platform outperforms traditional PCR testing, finding 10 out of 11 positives and no false positives in clinical samples.

SourceRice University·JournalNature Chemical Biology·TypeExperimental study·DateSep 22, 2022

A healthy lifestyle may help former smokers lower their risk of death from all causes

A recent study found that former smokers who stick to a healthy lifestyle have a lower risk of dying from all causes, including cancer and heart and lung diseases. The study analyzed data from over 159,000 former smokers and found that maintaining a healthy lifestyle was associated with a 27% reduction in the risk of death.

SourceNIH/National Cancer Institute·JournalJAMA Network Open·TypeData/statistical analysis·DateSep 22, 2022

Groundbreaking discovery from South Africa challenges the recent re-interpretation of magma chambers

Researchers have found evidence for a massive, molten chamber within the ancient crust of South Africa, contradicting recent views on the existence and longevity of such structures. The discovery suggests that 'big tank' magma chambers may be more common than thought, with implications for our understanding of Earth's geological history.

SourceUniversity of the Witwatersrand·JournalNature·TypeLiterature review·DateSep 22, 2022

It may already be too late to meet UN genetic diversity target, but new findings could guide conservation efforts

A study published in Science found that more than one-tenth of the world's terrestrial genetic diversity may already be lost due to climate change and habitat destruction. This could have serious implications for species' ability to adapt to climate change, highlighting the need for urgent conservation efforts.

SourceCarnegie Institution for Science·JournalScience·TypeComputational simulation/modeling·DateSep 22, 2022

Little rodent, big appetite

Invasive house mice on Southeast Farallon Island consume and compete with native species for food, leading to significant impacts on the island ecosystem. The study found that mice are highly opportunistic eaters whose diets vary throughout the year in response to changes in food availability.

SourceLouisiana State University·JournalPeerJ·DateSep 22, 2022

St. Jude finds a new way to identify ‘safe harbor’ for gene therapies

Scientists at St. Jude Children's Research Hospital have created a tool to identify 'safe harbor' sites for gene therapies, balancing safety and therapeutic expression. The tool uses genomic and epigenetic information to find regions with high variability among healthy individuals, reducing the risk of cancer or other problems.

SourceSt. Jude Children's Research Hospital·JournalGenome Biology·TypeExperimental study·DateSep 22, 2022

COVID-19 infections increase risk of long-term brain problems

New research shows that COVID-19 infections can lead to a range of neurological complications in the first year after infection, including strokes, cognitive decline, depression, anxiety, and migraine headaches. The study analyzed over 14 million medical records and found that COVID-19 survivors were at increased risk of developing the...

SourceWashington University in St. Louis·JournalNature Medicine·TypeData/statistical analysis·DateSep 22, 2022

Monkeypox outbreak highlights need for One Health approach to prevent future zoonotic diseases

The current global monkeypox outbreak emphasizes the importance of a preventative One Health approach to minimize the risk of future emergence of known and unknown zoonotic pathogens. This is particularly crucial with the majority of people worldwide living in high population densities in cities, facilitating the spread of infectious d...

SourceCABI·JournalCABI One Health·TypeLiterature review·DateSep 22, 2022

Novel method to predict behavior of different COVID-19 waves in the vaccinated or previously infected

Researchers developed a faster, more affordable method to analyze serological data and predict COVID-19 wave behavior. The study showed that vaccination boosted immunity, with hybrid immunity producing higher protection levels. Antibody levels rose quickly after the first dose, especially in cities where case numbers were highest.

Climate change is making lakes less blue

A new study finds that climate change may decrease the percentage of blue lakes worldwide, leading to shifts in lake water color and ecosystem health. The research uses satellite images to determine a global inventory of lake colors, finding that green-brown lakes are more widespread than previously thought.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateSep 22, 2022

Hunga Tonga-Hunga Ha’apai Eruption blasted vast quantities of water vapor into the stratosphere

The Hunga Tonga-Hunga Ha'apai eruption injected at least 50 million metric tons of water vapor directly into the stratosphere, potentially increasing global stratospheric water vapor by more than 5%. This unprecedented event could lead to changes in atmospheric chemistry and dynamics, including stratospheric cooling and surface warming.

Shocking paint – let’s get cell in

Researchers from the Institute of Physical Chemistry, Polish Academy of Sciences, have developed a novel polymer-based solution that enables easy delivery of large molecules to cells. By applying hypertonic solutions, they can induce osmotic stress and relax the cell membrane, allowing for precise control over molecule transfer.

SourceInstitute of Physical Chemistry of the Polish Academy of Sciences·JournalJournal of Colloid and Interface Science·DateSep 22, 2022

Substance use disorder treatment during COVID-19

Researchers analyzed changes in substance use disorder treatment admissions during the COVID-19 pandemic, revealing significant disparities by sex and ethnicity. The study highlights the need for tailored treatment approaches to address these inequities and ensure equitable access to care.

SourceJAMA Network·JournalJAMA Network Open·DateSep 22, 2022

Teams of sperm swim more smoothly against the current

A recent study found that sperm clustering in viscoelastic fluid offers three biological benefits: reduced direction changes, improved alignment, and increased safety from strong flows. This research may inform studies on infertility and provide better selection of sperm for assisted-reproduction technologies.

SourceFrontiers·JournalFrontiers in Cell and Developmental Biology·TypeExperimental study·DateSep 22, 2022

Pin-prick blood test identifies immunity to COVID-19

A finger-prick blood test developed by Cardiff University researchers can identify individuals most at risk of being reinfected with COVID-19. The test measures T cells that recognize SARS-CoV-2 and shows those with a stronger response are best protected from the virus.

SourceCardiff University·JournalNature Communications·TypeData/statistical analysis·DateSep 22, 2022

The greatest increase in animal species in the history of the Earth can help us understand and control ocean deoxygenation

A recent study published in Communications Earth & Environment found that stable oxygen levels in the ocean, rather than high oxygen levels alone, triggered the greatest increase in animal species in Earth's history. This discovery may help scientists preserve marine ecosystems and understand how to control ocean deoxygenation.

SourceUniversity of Copenhagen - The Faculty of Health and Medical Sciences·JournalCommunications Earth & Environment·TypeExperimental study·DateSep 22, 2022

Modulating MoSe2 functional plane via doping-defect engineering strategy to develop conductive and electrocatalytic mediators in Li-S batteries

Researchers developed a conductive and electrocatalytic mediator for Li-S batteries by modulating the MoSe2 functional plane through doping-defect engineering. This approach improves lithium polysulfide adsorption, reducing the shuttle effect and enhancing overall battery performance.

Clarifying the chaos of narwhal behavior

Long-term monitoring data reveals previously undetected diurnal patterns in narwhal behavior, including changes in surface activity and diving patterns influenced by sea ice and squid migration. The study's method can be applied to assess the challenges faced by narwhals and other Arctic animals due to climate change.

SourceHokkaido University·JournalPLOS Computational Biology·TypeComputational simulation/modeling·DateSep 22, 2022

Aged neurons generated directly from skin more accurately model Parkinson’s disease

Researchers have successfully created dopaminergic neurons directly from the skin of patients with Parkinson's disease, preserving aged characteristics and cellular defects. This breakthrough allows for modeling PD-related neuronal defects in a larger cohort of patients, aiming to identify disease causes and potential therapies.

SourceInternational Society for Stem Cell Research·JournalStem Cell Reports·DateSep 22, 2022

New study shows higher death toll among Puerto Ricans following Hurricane Maria than reported following 2017 disaster

A new University of Toronto study finds an additional 514 deaths should be added to the official Hurricane Maria death toll due to displaced Puerto Ricans in the US. The study suggests undercounting and highlights the need for equitable disaster preparedness and cross-jurisdiction data sharing.

SourceUniversity of Toronto·JournalBMJ Open·TypeData/statistical analysis·DateSep 22, 2022

Balanced fertilization: a fulcrum for sustainable production of maize and rice in Africa

A new analysis of nutrient omission trial data reveals that balanced fertilizer application can significantly improve maize and rice yields in sub-Saharan Africa. The study found that doubling current yields through balanced fertilization with nitrogen, phosphorus, and potassium can lead to more consistent results across regions.

SourceAfrican Plant Nutrition Institute·JournalAgronomy for Sustainable Development·TypeData/statistical analysis·DateSep 22, 2022

Global consortium study, supported by the Alzheimer’s Association, aims to shed light on viruses’ impact on the brain

A global consortium study aims to understand the impact of SARS-CoV-2 on the brain, with researchers evaluating over 1,000 participants worldwide. The study, led by UT Health San Antonio, uses advanced brain imaging and neuropsychological tests to assess cognitive function and identify potential causes of long-term brain changes.

SourceUniversity of Texas Health Science Center at San Antonio·JournalAlzheimer s & Dementia Translational Research & Clinical Interventions·TypeObservational study·DateSep 22, 2022

Anthropogenic air pollution more significant than desert dust

An international team found that more than 90% of fine aerosol particles detrimental to health and the climate originate from human-made sources. The study revealed high concentrations of nitrogen oxides, exceeding WHO guidelines, and linked air pollution to an annual excess mortality rate of 745 people per 100,000 in the region.

SourceMax Planck Institute for Chemistry·JournalCommunications Earth & Environment·TypeObservational study·DateSep 22, 2022

Discovering sirtuin longevity proteins in early branches of animal life

A study from University of California, Davis, and Harvard Medical School reveals multiple new sirtuins in early branching animals like jellyfish, sea sponges, and sea anemones. These proteins are involved in metabolism and DNA repair, playing a crucial role in the unique longevity strategies of these animals.

SourceUniversity of California - Davis·JournalMolecular Biology and Evolution·TypeExperimental study·DateSep 22, 2022

Distantly related viruses share self-assembly mechanism

Researchers have discovered that two distantly related RNA viruses perform chemical choreography in strikingly similar ways, forming a symmetrical icosahedral shell. This finding has potential applications in improving pharmaceutical delivery and engineering, as well as understanding protein folding mechanisms.

SourceSan Diego State University·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateSep 22, 2022

Awakening «dormant» cells to fight cancer

A team from UNIGE and HUG identified a protein regulation mechanism that reduces melanoma cells' capacity to adapt and resist treatment. They found that targeting this mechanism with an enzyme inhibitor reduces therapeutic resistance in all melanoma cells.

SourceUniversité de Genève·JournalBiochemical and Biophysical Research Communications·DateSep 22, 2022

How to keep researchers safe in the field

A team of researchers developed a comprehensive guide to making fieldwork safer and more equitable for students from diverse backgrounds. The document addresses risks such as mobility challenges, cultural sensitivities, and structural inequality, providing resources for leaders to create inclusive teams.

SourceUniversity of Pittsburgh·JournalMethods in Ecology and Evolution·TypeMeta-analysis·DateSep 22, 2022

Study findings suggest association between exposure to air pollution -- particularly in the first 5 years of life -- and alterations in brain structure

A study found an association between air pollution exposure during pregnancy and the first 5 years of life with altered white matter structural connectivity in children's brains. Exposure to fine particulate matter was also linked to changes in brain volume, particularly in preadolescents.

SourceBarcelona Institute for Global Health (ISGlobal)·JournalEnvironmental Pollution·TypeData/statistical analysis·DateSep 22, 2022