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Science News Archive 2022 - Page 145


Page 145 of 448

Particles pick pair partners differently in small nuclei

A high-precision experiment reveals that protons and neutrons in small nuclei prefer to pair up with others of the same kind more often than expected. The study provides new details about short-distance interactions between particles and may impact results from experiments seeking to tease out further nuclear structure details.

SourceDOE/Thomas Jefferson National Accelerator Facility·JournalNature·TypeExperimental study·DateAug 31, 2022

Low physical function after age 65 associated with future cardiovascular disease

A new study published in the Journal of the American Heart Association found that low physical function after age 65 is associated with a greater risk of developing heart attack, heart failure, and stroke. The study used the Short Physical Performance Battery (SPPB) test to assess physical function in 5,570 adults over 75 years old.

SourceAmerican Heart Association·JournalJournal of the American Heart Association·DateAug 31, 2022

NUS researchers discover potential intergenerational impacts of physical activity and nutrition on placental methylation and fetal growth

Research by NUS led by Professor Zhang Cuilin found that maternal physical activity before pregnancy is associated with placental DNA methylation patterns affecting fetal growth. Additionally, optimal fatty acid intake in early pregnancy optimizes fetal growth throughout pregnancy.

SourceNational University of Singapore, Yong Loo Lin School of Medicine·JournalAmerican Journal of Clinical Nutrition·TypeRandomized controlled/clinical trial·DateAug 31, 2022

Using nanopores to detect epigenetic changes faster

Scientists at the University of Freiburg have successfully characterized epigenetic modifications using nanopore analysis. The technique allows for rapid detection of protein fragments with varying levels of acetylation, enabling more accurate diagnosis and treatment of diseases like cancer.

SourceUniversity of Freiburg·JournalJournal of the American Chemical Society·DateAug 31, 2022

A sensory mystery

A team of researchers at Harvard Medical School has made new strides in understanding the basic biology of internal organ sensing, revealing spatial maps of neurons in the brain stem responding to feedback from internal organs. The study found that inhibition within the brain plays a key role in selectively responding to organs.

SourceHarvard Medical School·JournalNature·DateAug 31, 2022

HKU Dentistry study presents “positive stress” to boost tooth tissue regeneration

A study by HKU Dentistry found that 'positive stress' can induce good changes in tooth stem cells, making them more resistant to injury and disease. The research team developed a preconditioning protocol that modified the cells genetically to mimic low oxygen conditions, which activated protective mechanisms.

SourceThe University of Hong Kong·JournalJournal of Dental Research·TypeExperimental study·DateAug 31, 2022

How health systems can help build black wealth

According to Penn Medicine experts, health systems can utilize several strategies to help Black communities build wealth, including promoting job opportunities and investing in local economies. Wealth building has also been shown to improve health outcomes, as it affords choice and stability in housing, education, and nutrition.

SourceUniversity of Pennsylvania School of Medicine·JournalNew England Journal of Medicine·TypeCommentary/editorial·DateAug 31, 2022

Neighborhood associations should reflect the communities they belong to, argues a new study

A recent study published in the World Leisure Journal found that neighborhood associations often lack diversity and inclusivity, serving primarily the interests of young, affluent families. Researchers argue that these groups should aim to foster a sense of belonging for all residents, not just a select subgroup.

SourceConcordia University·JournalWorld Leisure Journal·TypeObservational study·DateAug 31, 2022

How can a welfare state boost population health?

Researchers found a negative correlation between age-standardized death rates and levels of decommodification in 21 OECD countries. Decreased labor market polarization and risk were associated with improved population health, particularly in men.

SourcePLOS·JournalPLOS ONE·TypeObservational study·DateAug 31, 2022

Why do galaxies stop making stars? A huge collision in space provides new clues

Astronomers discovered that merging galaxies can rip away gas fueling new stars, providing a possible explanation for why large galaxies are dead. The team found a 'post-starburst' galaxy seven billion light years away with signs of available star-forming fuel, suggesting an extreme collision caused the gas to escape.

SourceUniversity of Pittsburgh·JournalThe Astrophysical Journal Letters·TypeObservational study·DateAug 31, 2022

Heterogeneous development of β-cell populations in diabetes-resistant and -susceptible mice

Diabetes-resistant mice develop a protective beta cell cluster with reduced glucose uptake and increased beta cell division, while diabetic-prone mice experience metabolic stress and beta cell failure. This study reveals the key role of adaptive gene expression in protecting against type 2 diabetes.

SourceDeutsches Zentrum fuer Diabetesforschung DZD·JournalDiabetes·TypeExperimental study·DateAug 31, 2022

Dolutegravir-based antiretroviral therapies for HIV-1 effective in pregnancy

A study led by Harvard T.H. Chan School of Public Health researchers found that dolutegravir-based regimens are more effective in treating HIV-1 during pregnancy than other commonly used ART regimens. The study showed high viral suppression rates for pregnant people taking dolutegravir, with no observed differences in adverse birth out...

SourceHarvard T.H. Chan School of Public Health·JournalNew England Journal of Medicine·TypeObservational study·DateAug 31, 2022

Ecologists use the latest dental scanning technology to study young coral

A new method for monitoring coral size and growth has been developed using dental scanning technology, reducing surveying time by 99%. This non-destructive approach allows scientists to measure thousands of tiny corals quickly and accurately without harming them, with the potential to expand large-scale monitoring of ocean health.

SourceBritish Ecological Society·JournalMethods in Ecology and Evolution·TypeExperimental study·DateAug 31, 2022

Surface microstructures of lunar soil returned by Chang’e-5 mission reveal an intermediate stage in space weathering process

The study identifies wüstite FeO nanoparticles in lunar soil, suggesting an intermediate state in the thermal decomposition process of olivine. The findings imply that severe space weathering may not have occurred on the lunar surface, warranting further investigation into the incipient formation mechanism of rim structures.

SourceScience China Press·JournalScience Bulletin·DateAug 31, 2022

MAVEN and EMM make first observations of patchy proton aurora at Mars

The joint observations of EMM and MAVEN reveal fine-scale structures in proton aurora spanning the full day side of Mars, indicating a chaotic solar wind interaction. This phenomenon is caused by turbulent conditions around Mars allowing charged particles to flood directly into the atmosphere, forming patchy proton aurora.

SourceNASA/Goddard Space Flight Center·JournalGeophysical Research Letters·TypeObservational study·DateAug 31, 2022

High folic acid supplementation associated with higher rates of COVID-19 infections and mortality

A new study found that people taking high doses of folic acid were 1.5 times more likely to get COVID-19 and 2.6 times more likely to die from the virus compared to those not on folic acid supplements. Methotrexate, an antifolate drug, mitigated this negative impact when given with folic acid.

SourceUniversity of California - Davis Health·JournalBMJ Open·TypeData/statistical analysis·DateAug 31, 2022

Old drugs hint at new ways to beat chronic pain

A newly identified link between chronic pain and lung cancer in mice suggests that old drugs such as clonidine, capsaicin, and fluphenazine may offer new treatments for chronic pain. The study found that blocking the BH4 pathway reduced pain sensitivity and decreased tumor growth in mouse models of KRAS-driven lung cancer.

SourceIMBA- Institute of Molecular Biotechnology of the Austrian Academy of Sciences·JournalScience Translational Medicine·TypeExperimental study·DateAug 31, 2022

Simple technique ushers in long-sought class of semiconductors

Researchers from Osaka University developed a versatile method for preparing heterodimensional superlattices, exhibiting anisotropic electrical conductivity and the anomalous Hall effect at room temperature. This innovation promises to enhance data storage density, lighting efficiency, and electronic device speed.

SourceOsaka University·JournalNature·TypeExperimental study·DateAug 31, 2022

UCSF-led research team reveals mechanisms at work in progression of pancreatic cysts to pancreatic cancer

A UCSF-led team reveals that tumor immune microenvironments play a crucial role in the progression of pancreatic cysts to pancreatic cancer. The study suggests that therapies targeting regulatory T cells and myeloid-derived suppressor cells could inhibit malignant progression and treat high-risk disease.

SourceUniversity of California San Francisco Medical Center·JournalThe Lancet·TypeExperimental study·DateAug 31, 2022