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Science News for August 27, 2019


Excess body fat increases the risk of depression

A new study finds that excess body fat increases the risk of depression, with a 17% higher probability for every ten kilograms of extra weight. The study suggests that psychological consequences of being overweight or obese drive this increased risk, rather than biological effects.

SourceAarhus University·JournalTranslational Psychiatry·DateAug 27, 2019

Fat pumps generate electrical power

A study from Aarhus University has found that fat pumps in cell membranes create an electrical current, which may play a role in controlling essential processes in the body. This discovery highlights the importance of flippases in maintaining cellular function and suggests potential connections to neurological diseases and Alzheimer's.

SourceAarhus University·JournalProceedings of the National Academy of Sciences·DateAug 27, 2019

Researchers discover a new form of immunotherapy

Researchers have discovered a new form of immunotherapy that targets and removes specific immune cells called macrophages, which support cancer growth. The technique has shown promising results in treating malignant melanoma, with tumors shrinking after the removal of these cells.

SourceAarhus University·JournalJournal of Experimental Medicine·DateAug 27, 2019

Women are beautiful, men rational

A study of 3.5 million books found that words describing women tend to focus on physical appearance, while those describing men refer to behavior and personal qualities. The analysis highlights the potential impact of biased language on AI systems and employee recommendations.

Vaccine against deadly superbug Klebsiella effective in mice

A vaccine that protects against a worrisome superbug has been successfully tested in mice, providing hope for a solution to the growing global health threat of Klebsiella pneumoniae. The vaccine, developed using genetically modified E. coli, proved highly effective in preventing severe disease and death.

SourceWashU Medicine·JournalProceedings of the National Academy of Sciences·DateAug 27, 2019

Retina-on-a-chip provides powerful tool for studying eye disease

Scientists have developed a retina-on-a-chip technology that recreates the human retina's complex tissue architecture, enabling the efficient study of eye diseases and screening for drug side effects. The tool uses living human cells with an artificial tissue-like system, mimicking the body's environment and blood vessels.

SourceeLife·DateAug 27, 2019

Computational approach speeds up advanced microscopy imaging

Researchers have developed a way to enhance the imaging speed of two-photon microscopy up to five times without sacrificing resolution. By combining compressive sensing with a faster scanning method, scientists can now observe biological phenomena that were previously too fleeting to image with current state-of-the-art microscopy.

SourceOptica·JournalOptics Letters·DateAug 27, 2019

Not in Gotham anymore

A comic book by Ann E. Fink examines the bioethics of treating a torturer's PTSD, highlighting the importance of considering social dimensions of traumatic stress. The comic raises critical questions about the responsibilities of clinicians and researchers, as well as individual rights and collective social responsibilities.

SourceLehigh University·JournalAJOB Neuroscience·DateAug 27, 2019

How bees live with bacteria

A research group at University of Würzburg is focusing on the role of bacteria in bee health, finding that environmental factors have a stronger influence on solitary bees than previously thought. The study highlights the need for further research to combat bee mortality.

SourceUniversity of Würzburg·JournalTrends in Microbiology·DateAug 27, 2019

How worms snare their hosts

A study by the University of Bonn found that parasitic worms, such as Pomphorhynchus laevis, use bright orange coloring to attract specific host fish like barbels and sticklebacks. This strategy increases infection rates in these species, which are suitable for the parasite's reproduction.

SourceUniversity of Bonn·JournalBehaviour·DateAug 27, 2019

Better seizure control with ketogenic diet in infants with genetic epilepsy

A review of 10-year experience at Ann & Robert H. Lurie Children's Hospital of Chicago found that ketogenic diet was safe and effective in treating drug-resistant epilepsy in infants under 3 years old. Nearly half of children with genetic causes of epilepsy experienced significant seizure reduction after three months on the diet.

How texture deceives the moving finger

A recent study published in PLOS Biology explores how texture affects the way we perceive speed when touching objects. The researchers found that finer textures produce more vibrations in the skin, leading to a greater perceived speed. This is because specific nerve fibers in the skin are highly sensitive to these vibrations.

SourcePLOS·JournalPLOS Biology·DateAug 27, 2019

Crows consciously control their calls

A study published in PLOS Biology found that crows can deliberately control their calls, suggesting a high level of cognitive sophistication. The research used trained carrion crows to learn and respond to specific cues, revealing the birds' ability to exert control over their vocalizations.

SourcePLOS·JournalPLOS Biology·DateAug 27, 2019