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Science News for June 23, 2022


American College of Radiology and healthcare institutions actively address global shortage of contrast media

The American College of Radiology has issued risk mitigation guidance to help healthcare institutions conserve contrast media supplies amid a global shortage. Two healthcare systems, Vanderbilt University Medical Center and the University of North Carolina, have implemented strategies that reduced their contrast use by at least 50%.

SourceElsevier·JournalJournal of the American College of Radiology·TypeObservational study·DateJun 23, 2022

Population bottlenecks that reduced genetic diversity were common throughout human history

A new analysis of ancient and contemporary genomes shows that more than half of historical groups experienced founder events, leading to reduced genetic diversity. This research has significant implications for scientists studying human genetic variation and the discovery of disease-causing mutations.

SourceUniversity of California - Berkeley·JournalPLOS Genetics·TypeData/statistical analysis·DateJun 23, 2022

Association of receipt of fourth Pfizer-BioNTech vaccine dose with Omicron infection, COVID-19 hospitalizations among residents of long-term care facilities

A fourth dose of the Pfizer-BioNTech vaccine provided high protection against severe outcomes from Omicron infection among elderly residents in Israeli long-term care facilities. The vaccine also offered modest protection against COVID-19 infections among this population during a surge in Omicron variant cases.

SourceJAMA Network·JournalJAMA Internal Medicine·DateJun 23, 2022

Inside the jellyfish’s sting: Exploring the micro-architecture of a cellular weapon

Researchers at Stowers Institute for Medical Research have developed a precise model for the stinging organelle of the starlet sea anemone, revealing its complex architecture and firing mechanism. The findings could lead to beneficial applications in medicine, including microscopic therapeutic delivery devices.

SourceStowers Institute for Medical Research·JournalNature Communications·TypeObservational study·DateJun 23, 2022

Boron nitride nanotube fibers get real

Researchers at Rice University have successfully created the first heat-tolerant, stable fibers from boron nitride nanotubes using a wet-spinning process. The fibers assemble themselves into liquid crystals, making them easier to process and suitable for large-scale applications in aerospace, electronics, and energy-efficient materials.

SourceRice University·JournalNature Communications·TypeExperimental study·DateJun 23, 2022

THE LANCET INFECTIOUS DISEASES: COVID-19 vaccines are estimated to have prevented 20 million deaths worldwide in the first year of the vaccine program, modelling study finds

A mathematical modelling study published in The Lancet Infectious Diseases estimates that COVID-19 vaccines have prevented approximately 19.8 million deaths worldwide in the first year of the vaccination program, a reduction of 63%. This represents nearly 80% of potential deaths that would have occurred without vaccination.

SourceThe Lancet·JournalThe Lancet Infectious Diseases·TypeComputational simulation/modeling·DateJun 23, 2022

Chinese Medical Journal review discusses an interesting weight-loss surgery procedure

A narrative review of endoscopic sleeve gastroplasty (ESG) highlights its potential as a minimally invasive weight loss procedure. The review concludes that ESG induces significant weight loss and improves obesity-related conditions, with the technique's success attributed to delayed gastric emptying. Researchers support the use of ESG...

SourceCactus Communications·JournalChinese Medical Journal·TypeLiterature review·DateJun 23, 2022

BU researchers untangle the APOE4 gene, the most significant genetic risk factor for Alzheimer’s disease

Researchers at Boston University School of Medicine have discovered that the APOE4 gene is unique to patients with Alzheimer's disease and causes specific defects in human brain cells. The study provides new insights into the underlying mechanisms of the gene, which may lead to new therapeutic strategies to combat the condition.

SourceBoston University School of Medicine·JournalCell·TypeExperimental study·DateJun 23, 2022

Studies find little evidence of physical aging in turtle species, some of which reduce aging in response to better environmental conditions

Researchers investigated aging in turtle species, finding surprisingly little evidence of senescence. Protective adaptations and life history strategies contribute to the negligible aging in long-lived species. Some turtle and tortoise species may even reduce physical aging in response to better environmental conditions.

A case of internal observation using X-ray CT, aiming to discover the vibration damping mechanism

The study used synchrotron radiation X-ray computed tomography (CT) to observe internal nonuniform deformation of a material in several dozens mm. They found that performing deformation evaluations at both macroscale and microscale can provide insights into the vibration damping mechanism of rubber materials.

SourceToyohashi University of Technology (TUT)·JournalPolymer Testing·TypeExperimental study·DateJun 23, 2022

AHA, ACC release standard definition set for diagnosis and treatment of COVID-19

The American College of Cardiology and the American Heart Association have released a comprehensive data standard to standardize definitions for COVID-19-related cardiovascular conditions. This framework will help pool or compare data from various sources to assess its applicability to clinical practice and research endeavors.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·TypeLiterature review·DateJun 23, 2022

Modeling a devastating childhood disease on a chip

A team of researchers created an in vitro human model of environmental enteric dysfunction (EED) using the Human Organ Chip technology. The EED Chips recapitulate features of EED found in biopsies from human patients, including inflammation and intestinal barrier dysfunction. The study sheds light on the complex interplay between malnu...

SourceWyss Institute for Biologically Inspired Engineering at Harvard·JournalNature Biomedical Engineering·TypeExperimental study·DateJun 23, 2022

Cancer patients receiving immunotherapy: No evidence of increased risk for severe immune complication after COVID-19 vaccination

A study of 64 vaccinated and 26 unvaccinated cancer patients found that COVID-19 vaccination frequently triggers cytokine release syndrome-associated cytokines, but rarely causes symptoms. Vaccination appears to improve overall survival in vaccinated patients.

Researchers reveal oxygenate-based routes in syngas conversion over oxide-zeolite bifunctional catalysts

A research team discovered oxygenate-based routes in syngas conversion over oxide-zeolite (OXZEO) bifunctional catalysts using solid-state Nuclear Magnetic Resonance (NMR). The study revealed the mechanistic difference between OXZEO and traditional zinc oxide and zeolite catalysts.

SourceDalian Institute of Chemical Physics, Chinese Academy Sciences·JournalNature Catalysis·TypeCommentary/editorial·DateJun 23, 2022

Self-assembled, interlocked threads: Spinning yarn with no machine needed

Pitt and Princeton engineers develop a system that converts chemical energy into mechanical action, allowing two-dimensional polymer sheets to rise and rotate in spiral helices without external power. The self-assembly process creates a complex, three-dimensional structure resembling twisted yarn being formed by a rotating spindle.

SourceUniversity of Pittsburgh·JournalPNAS Nexus·TypeComputational simulation/modeling·DateJun 23, 2022

Women achieving childbearing desires drives contraception use

A new study found that 85-90% of the increase in contraception use is due to meeting demand for reproductive control, not avoiding pregnancy. Women are successfully carrying out their preferences and achieving what they want, refuting the idea that decreased desire for children is driving the rise in contraception use.

SourceOhio State University·JournalStudies in Family Planning·TypeData/statistical analysis·DateJun 23, 2022

Coastal marsh migration may further fuel climate change

A new modeling study predicts that coastal marsh migration will release more carbon into the atmosphere, exacerbating climate change. As marshes move inland due to sea level rise, they convert land from a net carbon sink to a net carbon source, releasing stored carbon into the air.

SourceDuke University·JournalPLOS Climate·TypeComputational simulation/modeling·DateJun 23, 2022

A new light in rice flowering

The study clarifies the role of photoperiodism in regulating rice flowering time. Phytochrome B makes connection between light and Evening Complex, while active ELF3-1 protein triggers late flowering. Evening Complex plays essential role in inducing flowering, with inactive proteins leading to no flowering.

NYU Abu Dhabi researchers develop new tool that brings missing sense of touch to minimally-invasive surgery procedures

Researchers from NYU Abu Dhabi have developed a simple yet effective approach for on-demand tactile sensing in minimally-invasive surgery. The Smart Laparoscopic Forceps (SLF) system measures grasping force and angle, providing surgeons with relative stiffness index of tissue to help with decision-making during operations.

SourceNew York University·JournalIEEE Journal of Translational Engineering in Health and Medicine·DateJun 23, 2022

Study identifies unique underlying molecular factors driving melanoma development

Researchers identify key features of a gene mutation responsible for 15-20% of melanomas, establishing a link between the frequency of specific NRAS mutations and spontaneous melanoma formation. The study could help pinpoint early events required for melanoma formation and develop targeted treatments.

SourceOhio State University Wexner Medical Center·JournalNature Communications·TypeExperimental study·DateJun 23, 2022

Smart implants to monitor healing

Researchers at the University of Pittsburgh have developed self-powered smart implants that can monitor spinal fusion healing in real-time. The implants use a new class of multifunctional mechanical metamaterials to record pressure and stresses, generating their own power and providing crucial information about the healing process.

SourceUniversity of Pittsburgh·JournalAdvanced Functional Materials·DateJun 23, 2022

Climate change could lead to a dramatic temperature-linked decrease in essential omega-3 fatty acids, according to new study

A new study predicts a temperature-linked decrease in the production of essential omega-3 fatty acids, which are crucial for fish and human consumption. The researchers analyzed planktonic lipids in the global ocean, finding a significant decline in eicosapentaenoic acid (EPA) under worst-case climate scenarios.

NTU Singapore and ETH Zurich scientists decontaminate heavy metal water using protein from plant waste

Scientists have created a membrane made from a waste by-product of vegetable oil manufacturing that can filter out heavy metals from contaminated water. The membrane uses proteins derived from peanut or sunflower oil production to attract and trap heavy metal ions, purifying water to international drinking standards.

SourceNanyang Technological University·JournalChemical Engineering Journal·TypeExperimental study·DateJun 23, 2022

Arecibo observatory scientists help unravel surprise asteroid mystery

The team at Arecibo Observatory successfully captured data on the mysterious asteroid 2019 OK, revealing it was a fast-rotating C-type or S-type asteroid with a diameter of .04 to .08 miles. The findings provide insights into asteroid composition and rotation rates, which can help inform deflection techniques to protect the planet.

SourceUniversity of Central Florida·JournalThe Planetary Science Journal·TypeObservational study·DateJun 23, 2022

Novel sleep education learning modules developed for nurse practitioners

A first-of-its-kind study from the University of Pennsylvania School of Nursing investigated the use of novel graduate-level sleep education curriculum for primary care nurse practitioners. The program positively impacted a range of learning outcomes, including improved recognition and evaluation of sleep disturbances and disorders.

SourceUniversity of Pennsylvania School of Nursing·JournalJournal of Clinical Sleep Medicine·DateJun 23, 2022

Methods from weather forecasting can be adapted to assess risk of COVID-19 exposure

Researchers developed a smartphone app that harnesses weather forecasting data to provide individuals with a granular understanding of their COVID-19 risk. The app would blend various types of data, including surveillance testing and wearable sensor data, to forecast the spread of disease across a network of human contacts.

SourceCalifornia Institute of Technology·JournalPLOS Computational Biology·TypeComputational simulation/modeling·DateJun 23, 2022

Thermoelectrics: From heat to electricity

Scientists have discovered a way to optimize thermoelectric properties in one material by exploiting the Anderson transition, where electrons move freely, enabling efficient energy conversion. This breakthrough could lead to improved performance in thermoelectric devices and applications, such as power generation and waste heat recovery.

SourceVienna University of Technology·JournalNature Communications·TypeExperimental study·DateJun 23, 2022

Increase in leptin levels in preeclampsia prompts cardiovascular cascade that puts mother and baby at risk

Researchers discovered that midgestation leptin surge in preeclampsia leads to endothelial dysfunction, blood vessel constriction, and restricted fetal growth. This finding highlights the crucial role of leptin in pregnancy and its potential consequences on maternal and infant cardiovascular health.

Climate change negatively impacting bumble bees: Study

A new study published in Biology Letters found that climate change is negatively impacting bumble bees, with six species decreasing in population and 22 increasing, while the remaining 18 remained stable. Temperature changes were found to have a primary negative impact on bumble bee populations.

SourceSimon Fraser University·JournalBiology Letters·TypeData/statistical analysis·DateJun 23, 2022

College towns saw fewer COVID-19 cases when classes were held online and/or on-campus testing was conducted – suggesting regular tests could reduce future community infections

Researchers found that college towns experienced lower COVID-19 case rates when classes were held online or accompanied by regular on-campus testing. This suggests that implementing regular testing could help mitigate future community infections in these settings.

SourcePLOS·JournalPLOS Digital Health·TypeObservational study·DateJun 23, 2022

How MRI and CT predict flap failure after head and neck reconstructive cancer surgery

Researchers used CT and MRI perfusion techniques to analyze 19 patients with successful free flap reconstruction and five with wound failure. The study found that both methods showed significant differences between the two patient groups. Early postoperative scans could help surgeons intervene earlier, potentially reducing hospital stays.

SourceMichigan Medicine - University of Michigan·JournalAmerican Journal of Neuroradiology·TypeRandomized controlled/clinical trial·DateJun 23, 2022

Newer COVID-19 subvariants are less vulnerable to immunity induced by vaccination and previous infection, researchers find

Researchers at Beth Israel Deaconess Medical Center found that newer Omicron subvariants BA.4 and BA.5 escape neutralizing antibodies induced by both vaccination and previous infection. These variants are now responsible for over 21% of new cases in the US, highlighting a shift in the COVID-19 landscape.

SourceBeth Israel Deaconess Medical Center·JournalNew England Journal of Medicine·DateJun 23, 2022

Females itch less than males

Research at Kyoto University found that estradiol suppresses severe skin inflammation in females compared to males, revealing its therapeutic potential. The hormone regulates immune cells and reduces IL-17A and IL-1β cytokines production.

SourceKyoto University·JournalJournal of Allergy and Clinical Immunology·TypeExperimental study·DateJun 23, 2022