In a new study of five male cosmonauts, researchers looked at levels of different proteins in the blood that are often also seen in people with some sort of head trauma or brain disease. Via InsideScience.
"Star Trek" star William Shatner and three other civilian crewmembers were launched into space and returned to Earth after a 10-minute trip.Over the past several years, scientists have published research suggesting that people's brains change after spending longer than a few months in space. These studies started because astronauts experienced issues like vision problems and swollen optic nerves upon returning to Earth after long missions.
But researchers don't know what these brain changes might mean for people's health and cognition. Dr. Peter zu Eulenburg, a co-first author of the new The biomarkers in the study can be used"to indirectly evaluate the extent of damage" due to neurodegeneration or a traumatic injury, said zu Eulenburg, who is a neurologist and professor of neuroimaging at the German Center for Vertigo and Balance Disorders. Neurofilament light chain, for example, is a structural protein that maintains neurons' axons, which transmit signals to other neurons.
Zu Eulenburg said that the fact that some levels remained elevated for the entire three weeks was"very surprising," and the results"verified brain injury as a consequence to long-duration exposure to microgravity."The Shenzhou-13 carried by a Long March-2F rocket launches with three astronauts from China Manned Space Agency on board in Jiuquan, China, Oct. 16, 2021.
Both Roberts and Kawata would like future studies to measure the biomarkers for longer than three weeks after astronauts return, as well as while they are on the space station, which would help determine if the elevated levels are due to time spent in microgravity, rather than the change in gravity upon return, or the intense force experienced during landing.
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