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2024

Новости за 17.05.2024

Sciencedaily.com 

Chronic wasting disease unlikely to move from animals to people

A new study of prion diseases, using a human cerebral organoid model, suggests there is a substantial species barrier preventing transmission of chronic wasting disease (CWD) from cervids -- deer, elk and moose -- to people. The findings are consistent with decades of similar research in animal models.

Sciencedaily.com 

Sweet taste receptor affects how glucose is handled metabolically by humans

The sweet-taste receptor might be the first stop in a metabolic surveillance system for sugar. The receptor is also expressed in certain intestinal cells, where it may facilitate glucose absorption and assimilation, as part of this system. A team found that stimulation and inhibition of the sweet receptor helps regulate glucose metabolism in humans and may have implications for managing such metabolic disorders as diabetes.

Sciencedaily.com 

Scientists discover mechanism of sugar signaling in plants

A paper describes how the moving parts of a particular plant protein control whether plants can grow and make energy-intensive products such as oil -- or instead put in place a series of steps to conserve precious resources. The study focuses specifically on how the molecular machinery is regulated by a molecule that rises and falls with the level of sugar -- plants' main energy source.

Sciencedaily.com 

Research finds VISTA directly blocks T-cells from functioning in immunotherapy

A team of scientists and physicians have discovered that the immune checkpoint protein VISTA can directly turn off tumor-fighting T-cells during immunotherapy and resist treatment. The study explains that VISTA can bind to a protein called LRIG1 in T cells, which was previously only thought to promote bone and fat development. When VISTA binds to LRIG1, the researchers found, LRIG1 sends signals that suppress T cell replication, survival and function. This interaction can happen between molecules on tumor cells and on T cells... Читать дальше...

Sciencedaily.com 

Magnetic imprint on deconfined nuclear matter

Scientists have the first direct evidence that the powerful magnetic fields created in off-center collisions of atomic nuclei induce an electric current in 'deconfined' nuclear matter. The study used measurements of how charged particles are deflected when they emerge from the collisions. The study provides proof that the magnetic fields exist and offers a new way to measure electrical conductivity in quark-gluon plasma.

«SFGate» (sfgate.com) 

How powerful windstorms caused deaths and extensive damage across Houston

Meteorologists say exceptional windstorms that may leave some Houston residents without power for weeks left damage in their wake comparable to that caused by a hurricane. Janice Maldonado, a National Weather Service meteorologist, says the storms that barreled through Houston Thursday are the most significant in the area since Hurricane Alicia in 1983. The fierce winds folded transmission towers, blew out windows and uprooted trees. Maldonado says straight-line winds gusting over 80 mph in a single direction caused the damage. Читать дальше...




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