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Science News Archive 2019 - Page 390


Page 390 of 486

Expansion of transposable elements offers clue to genetic paradox

A recent study reveals that transposable element insertions drive rapid phenotypic variation in plants, enabling them to adapt to novel environments. Researchers found that transposable elements are enriched in the gene promoter regions of a plant species with limited genetic variation, associated with changes in gene expression.

SourceChinese Academy of Sciences Headquarters·JournalProceedings of the National Academy of Sciences·DateMar 17, 2019

New cardiac pump clinically superior, safer for patients

The final results of MOMENTUM 3 show that the HeartMate 3 left-ventricular assist device markedly reduced re-operation due to pump malfunctions, lowering risk of bleeding events and strokes. The study found significant reductions in pump-related thrombosis, strokes and mucosal bleeding compared to the previous generation of cardiac pumps.

SourceBrigham and Women's Hospital·JournalNew England Journal of Medicine·DateMar 17, 2019

Low-risk patients benefit from minimally invasive transcatheter aortic valve replacement

Results from the PARTNER 3 trial demonstrate that low-risk patients with severe aortic stenosis can significantly benefit from minimally invasive TAVR, leading to shorter recovery times and lower complication rates. This groundbreaking procedure has the potential to transform treatment options for patients with heart disease.

SourceNorthwestern Memorial HealthCare·JournalNew England Journal of Medicine·DateMar 17, 2019

In study, TAVR is superior to surgery for low-risk patients with aortic valve stenosis

In the multicenter clinical trial, TAVR showed superiority to open-heart surgery in low-risk patients with severe aortic stenosis. One-year mortality rates were significantly lower with TAVR, with 42 deaths vs 68 in the surgical group. The study also found shorter hospital stays and fewer strokes for TAVR patients.

SourceColumbia University Irving Medical Center·JournalNew England Journal of Medicine·DateMar 16, 2019

What is the real link between bacterial vaginosis and HIV risk in women?

Researchers explore link between bacterial vaginosis and HIV transmission in women, highlighting importance of standardized diagnosis and testing. The study aims to standardize discussions around BV clinical and research findings, shedding light on the microbial make-up of the vagina and its impact on HIV acquisition.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalAIDS Research and Human Retroviruses·DateMar 15, 2019

Opioid prescribing across the United States

This analysis of US outpatient prescribing records reveals a two-to-three-fold variation in opioid prescribing metrics among states, with significant implications for policy and public health. Researchers suggest that this data can inform state-specific laws, policies, and interventions to address opioid-related problems.

SourceJAMA Network·JournalJAMA Network Open·DateMar 15, 2019

Honey bee gut microbiome research -- NSF grant

Researchers from Virginia Tech and Eastern Washington University are collaborating on a $958,415 NSF grant to study the critical role of the honey bee gut microbiome in health and defense against parasites. The team aims to develop a network of genes from the parasite, microbiome, and host to determine their interactions with each other.

Dormant viruses activate during spaceflight -- NASA investigates

NASA research finds that dormant viruses reactivate in over half of crew members on Space Shuttle and International Space Station missions. The reactivation rate increases with spaceflight duration, raising concerns for the success of deep-space missions. Effective prevention and treatment are crucial to safeguarding astronauts.

SourceFrontiers·JournalFrontiers in Microbiology·DateMar 15, 2019

Nursing work environment shapes relationship between EHR & quality of care

A recent study by the University of Pennsylvania School of Nursing found that the nursing work environment plays a significant role in how nurses evaluate EHR usability and its impact on quality and safety of care. The study, which analyzed data from over 12,000 nurses, showed that hospitals with better work environments had fewer repo...

SourceUniversity of Pennsylvania School of Nursing·JournalApplied Clinical Informatics·DateMar 15, 2019

Bad news for egg lovers

A large study of nearly 30,000 adults found that consuming 300 mg of dietary cholesterol per day increases the risk of cardiovascular disease by 17% and death by 18%. The study also linked eating three to four eggs per week to a 6% higher risk of cardiovascular disease and an 8% higher risk of any cause of death.

SourceNorthwestern University·JournalJAMA·DateMar 15, 2019

Nitrogen pollution's path to streams weaves through more forests (and faster) than suspected

A study by the USDA Forest Service reveals that more nitrogen from rain and snow reaches streams than previously believed, flowing downstream at a faster rate through US and Canadian forests. This unprocessed nitrate bypasses biological filters, contributing to forest decline and growth of nuisance vegetation.

SourceUSDA Forest Service - Northern Research Station·JournalEnvironmental Science & Technology·DateMar 15, 2019