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Science News Archive 2019 - Page 377


Page 377 of 486

Aspirin to fight an expensive global killer infection

Researchers at the Centenary Institute discovered that the tuberculosis bacterium hijacks platelets from the body's blood clotting system to weaken immune systems. Using anti-platelet drugs like aspirin, they were able to prevent hijacking and allow the body to control infection better.

SourceCentenary Institute·JournalThe Journal of Infectious Diseases·DateMar 25, 2019

Advanced imaging technology predicts cardiovascular risk from inflammation detected in arteries

Researchers used advanced PET/MRI technology to analyze inflammatory processes in arteries of individuals with atherosclerotic plaques. The study found that inflammation is present at early stages of atherosclerosis, particularly in regions without developed plaques.

SourceCentro Nacional de Investigaciones Cardiovasculares Carlos III (F.S.P.)·JournalJournal of the American College of Cardiology·DateMar 25, 2019

Drug diversity in bacteria

Bacteria can create a wide range of derivatives from simple basic structures through mechanisms similar to pharmaceutical research. This diversification allows them to counteract unknown competitors and exhibit a wide range of biological activity.

SourceGoethe University Frankfurt·JournalNature Chemical Biology·DateMar 25, 2019

Widely used malaria treatment to prevent malaria in pregnant women

The study found that the widely used antimalarial sulphadoxine-pyrimethamine (SP) is no longer effective in preventing malaria in areas with high levels of resistance. In areas where more than 37% of parasites carry six mutations, the effectiveness of SP appears to be fully compromised. The researchers are calling for further investiga...

SourceLiverpool School of Tropical Medicine·JournalThe Lancet Infectious Diseases·DateMar 25, 2019

Study questions value of genetic risk scores

A recent publication touted genetic risk scores as a tool for identifying patients at high risk of heart disease, cancer, and diabetes. However, a new study questions the value of these scores, finding they have lower accuracy when considering individual patient factors.

SourceWiley·JournalAnnals of Human Genetics·DateMar 25, 2019

A petrifying virus key to evolution

A newly discovered Medusavirus giant virus provides new insights into host-virus co-evolution, with features including DNA coding for five histones and unique capsid surface proteins. The discovery suggests a lateral gene transfer model between host and virus.

SourceKyoto University·JournalJournal of Virology·DateMar 25, 2019

Phasing out air pollution emissions

A recent study suggests that rapidly phasing out air pollution emissions can prevent approximately 3.6 million avoidable deaths each year, while also increasing rainfall in drought-prone regions and limiting global warming. The researchers found that removing fossil fuel-related and all anthropogenic emissions could achieve the 2°C tar...

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateMar 25, 2019

Earth's deep mantle flows dynamically

A new study reveals that the Earth's lower mantle is more dynamic than previously thought, with increased flow in regions where ancient ocean floors plunge into the planet's core. This discovery has significant implications for understanding how quickly Earth is cooling and the dynamic evolution of our planet.

SourceUniversity College London·JournalNature Geoscience·DateMar 25, 2019

Study suggests how, when to support military couples after homecoming

A new study by Leanne Knobloch and her team provides guidance on supporting military couples during the reintegration process, highlighting the importance of providing ample support for at-home partners, addressing mental health symptoms, and working with couples to address relationship questions and disruptions.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalJournal of Clinical Psychology·DateMar 25, 2019

Replacing sitting time with physical activity associated with lower risk of death

A new study found that replacing a half hour of sitting time with light physical activity was associated with a nearly 50% reduction in mortality among the least active participants. Replacing sedentary time with moderate-intensity physical activity was also linked to a lower risk of death, although the association was smaller.

SourceAmerican Cancer Society·JournalAmerican Journal of Preventive Medicine·DateMar 25, 2019

New angle of attack drives cellular HIV-reservoirs to self-destruction

A new study from Cornell University has identified a genetic regulator called SAF that helps HIV-infected macrophages avoid cell death. By blocking SAF, researchers found that infected cells self-destructed while healthy cells remained untouched, presenting a novel angle for potential therapies to selectively eradicate reservoir cells.

SourceCornell University·JournalProceedings of the National Academy of Sciences·DateMar 25, 2019

Handshakes or contracts?

A new study found that improvements in property damage and casualties differ for fire departments with informal, formal, or contract-based collaborations. Formal contracts improve performance on goals firefighters are motivated to achieve, but may negatively impact motivation for other important goals.

SourceUniversity of Toronto, Rotman School of Management·JournalStrategic Management Journal·DateMar 25, 2019

New properties of perovskite solar cells

Researchers found that perovskite solar cells are stable up to 300 Gy of γ-radiation but suffer a rapid drop in efficiency with further increases in dose. The study aims to find more stable materials, which could make perovskite solar cells suitable for use in space

SourceUral Federal University·JournalThe Journal of Physical Chemistry Letters·DateMar 25, 2019

Deforestation and drinking water quality

A study by Hisahiro Naito and Annie Mwayi Mapulanga found that deforestation in Malawi is associated with lower safe drinking water usage, despite increased runoff. The authors estimate a 9% decrease in precipitation equivalent to a 14% loss of forest area, highlighting the importance of preserving forests for water source protection.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateMar 25, 2019

MD Anderson study may explain why immunotherapy not effective for some patients with metastatic melanoma and kidney cancer

A new study by MD Anderson Cancer Center suggests that certain B cells with unique characteristics can predict which patients are most likely to respond to immunotherapy for metastatic melanoma and kidney cancer. The researchers found that activated B cells with specific phenotypes were associated with a better response to treatment.