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Science News Archive September 2017 - Page 29


Page 29 of 39

Astronomers spun up by galaxy-shape finding

For the first time, astronomers have measured how a galaxy's spin affects its shape, finding that faster-spinning galaxies are flatter and spiral galaxies with faster spins have more circular disks. The study used a new instrument, SAMI, to analyze data from 845 galaxies.

SourceUniversity of Sydney·JournalMonthly Notices of the Royal Astronomical Society·DateSep 11, 2017

Climate change a buzzkill for coffee lovers

A new study finds climate change will reduce coffee-growing areas in Latin America by up to 88% by 2050, mainly due to declining bee populations. However, the research also identifies regions where bee diversity is likely to increase, potentially boosting coffee productivity.

SourceUniversity of Vermont·JournalProceedings of the National Academy of Sciences·DateSep 11, 2017

Mixing and matching yeast DNA

Researchers at Osaka University have identified distinct factors regulating crossover-type recombination at yeast centromeres and non-centromeres. The study suggests that centromeres are protected from chromosomal rearrangements due to specific proteins, ensuring DNA fidelity.

SourceOsaka University·JournalNucleic Acids Research·DateSep 11, 2017

Multiple sclerosis and microbiome

Researchers found significant differences in bacterial genera between MS patients and healthy controls, with Acinetobacter and Akkermansia being more abundant in patients. Exposure to extracts from these bacteria increased proinflammatory T cell differentiation and inhibited regulatory T cell differentiation.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateSep 11, 2017

How liver cancer develops

Researchers discovered that caspase-8 triggers programmed cell death in diseased liver cells, leading to genetic instability and tumor development. This mechanism is remarkably universal across various liver diseases.

SourceUniversity of Zurich·JournalCancer Cell·DateSep 11, 2017

Proteins keep a grip on cells

Scientists have identified where laminin 511 interacts with integrins, crucial adhesion molecules that determine cell function and shape. The discovery reveals the gamma chain directly interacts with integrins, stabilizing the laminin-integrin bond.

SourceOsaka University·JournalScience Advances·DateSep 11, 2017

The evolutionary origin of the gut

Researchers from the University of Vienna have challenged a 150-year-old hypothesis on the evolutionary origin of the gut by studying sea anemones. Contrary to previous beliefs, digestive enzyme- and insulin-producing gland cells do not develop from endoderm but from the ectodermal part of the mouth in sea anemones.

SourceUniversity of Vienna·JournalNature Ecology & Evolution·DateSep 11, 2017

Researchers find 'internal clock' within live human cells

Scientists have identified a previously undetected motion in the human cell nucleus, which decreases over time during the cell cycle and marks the first physical feature to systematically change with the cell cycle. This internal clock-like mechanism could contribute to understanding nuclear envelope function in health and disease.

SourceNew York University·JournalProceedings of the National Academy of Sciences·DateSep 11, 2017

Science spin prevalent, researchers warn

A systematic review of 35 academic studies found that over 26% of systematic reviews and meta-analyses contained spin, with up to 84% in non-randomized trials. The most common strategies for spinning results included selective reporting and attributing causality when it was not possible.

SourceUniversity of Sydney·JournalPLOS Biology·DateSep 11, 2017

Metabolically healthy obese, underweight individuals still susceptible to heart disease

A large study found that metabolically healthy obese individuals have a higher risk of coronary heart disease, cerebrovascular disease, and heart failure compared to normal weight individuals with no metabolic abnormalities. Underweight individuals also face increased risks for certain cardiovascular diseases.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateSep 11, 2017