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Page 12 - தகவல்தொடர்புகள் உயிரியல் News Today : Breaking News, Live Updates & Top Stories | Vimarsana

An antioxidative stress regulator helps keep muscles from becoming weak in low gravity

An antioxidative stress regulator helps keep muscles from becoming weak in low gravity Most kids dream of growing up to be astronauts; but the downside of spending extended amounts of time in low gravity is that astronauts muscles tend to shrink and weaken through disuse. Now, researchers from Japan have identified a protein that affects how muscles respond to space flight. In a study published in June 2021 in Communications Biology, researchers from the University of Tsukuba have revealed that nuclear factor E2-related factor 2, or NRF2, helps keep muscles from becoming weak in low gravity. Muscle atrophy, or weakening, is a common feature of disease and aging. It can also occur after a long period of inactivity, such as during space flight, when astronauts don t need to use their muscles as much as they do on Earth to support their weight or move around. When muscles atrophy in space, they not only decrease in size, but they also tend to lose a type of fiber called slow-twit

Underwater Noise Pollution Could Damage Crucial Ocean Plants

Karen Kwon, Contributor (Inside Science) Under the Mediterranean Sea lie meadows of Posidonia oceanica, a native seagrass species. It might not look like it’s doing much just swaying back and forth with the current but seagrass absorbs carbon dioxide, emits oxygen, protects coasts from erosion and provides habitat for fish.  But a new threat to seagrass beds has been detected: underwater noise pollution caused by humans. A team of European scientists reported in the journal Communications Biology in June that when P. oceanica is exposed to noise, organs in the plant that store energy and detect gravity are destroyed, adding to concern for this already-threatened species.

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