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Science News Archive May 2017 - Page 39


Page 39 of 42

Cardiorespiratory fitness can reduce risk of fatty liver

A Finnish study finds that moderate cardiorespiratory fitness protects against fatty liver, a significant public health concern linked to metabolic disturbances and cardiovascular disease. Achieving cardiorespiratory fitness can help mitigate the risk of fatty liver, regardless of weight status.

SourceUniversity of Turku·JournalMedicine & Science in Sports & Exercise·DateMay 3, 2017

Doctors should question the value of most heavily promoted drugs

Research suggests that pharmaceutical promotion can lead to overprescription of brand-name medications. The study found that top-selling and top-prescribed drugs were more likely to be effective, safe, affordable, novel, and represent a genuine advance in treating a disease. However, heavily promoted drugs often fell short in these areas.

SourceBMJ Group·JournalThe BMJ·DateMay 2, 2017

Smoking decreases MAIT cells, implicated in the pathology of autoimmune diseases

New research published in the Journal of Leukocyte Biology found that smoking decreases frequencies of MAIT cells in healthy individuals and patients with multiple sclerosis. This discovery sheds light on the effects of smoking on the immune system, potentially revealing pathogenic mechanisms contributing to autoimmune diseases.

SourceFederation of American Societies for Experimental Biology·JournalJournal of Leukocyte Biology·DateMay 2, 2017

Microphysical differences in precipitation between Tibet and southern China

A study analyzing raindrop size distribution data over Tibet and southern China reveals significant microphysical differences in precipitation. The results indicate lower raindrop number concentrations for convective precipitation in Tibet, while larger raindrops show similar characteristics in both regions.

SourceInstitute of Atmospheric Physics, Chinese Academy of Sciences·JournalAdvances in Atmospheric Sciences·DateMay 2, 2017

At last, a clue to where cancer metastases are born

Scientists at Scripps Research Institute discovered that invasive tumors can send out tumor cells earlier than thought, which may seed secondary tumors years later. The escaping cells enter the bloodstream by entering blood vessels deep within the dense tumor core, upending the long-held belief about metastatic cell origin.

SourceScripps Research Institute·JournalCell Reports·DateMay 2, 2017

How fluids flow through shale

Researchers used a coarse-grain approach to model the behavior of fluids in tiny pores within shale rock. The simulations incorporated high-resolution imagery of shale samples, allowing for better probing of the underlying physics. This new understanding could lead to more efficient oil and gas extraction methods.

SourceAmerican Institute of Physics·JournalPhysics of Fluids·DateMay 2, 2017

Simple blood tests lead to improved hypertension treatment in African countries

Researchers at Western University developed a simple blood test to identify physiological changes causing resistant hypertension, leading to improved treatment outcomes. The study found that patients treated with the test had 50% controlled blood pressure after one year, compared to 11.1% in those receiving usual treatment.

SourceUniversity of Western Ontario·JournalAmerican Journal of Hypertension·DateMay 2, 2017

Electroconvulsive therapy (ECT) is safe

A systematic review by Aarhus University researchers documents that ECT-related deaths are extremely rare, with only one reported death out of 414,747 treatments. The study highlights the procedure's highly beneficial effects on mental disorders, outweighing potential side effects like memory impairment.

SourceAarhus University·JournalActa Psychiatrica Scandinavica·DateMay 2, 2017

Antarctic Peninsula ice more stable than thought

A new study found the Antarctic Peninsula's glaciers are losing ice at a rate of 15 cubic kilometers per year, not three times as much as previously reported. The glacier speed increase is attributed to ocean melting and warming, causing dynamical imbalance in Western Palmer Land.

SourceUniversity of Leeds·JournalGeophysical Research Letters·DateMay 2, 2017

Biology's need for speed tolerates a few mistakes

A new paper reveals that evolution has optimized two fundamental biological processes, DNA replication and protein translation, to prioritize speed over accuracy. The research suggests that a few mistakes are tolerable as long as the majority of biopolymers produced are correct, and energy savings can be significant.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateMay 2, 2017