Animal Study Suggests Deep Space Travel May Significantly Damage GI Function in Astronauts
Simulations with animal models meant to mirror galactic cosmic radiation exposure to astronauts are raising red flags for investigators at Georgetown University Medical Center (GUMC) about the health of astronauts during long voyages, such as to Mars.
Their most recent study, published in the Proceedings of the National Academy of Sciences of the United States of America (PNAS), suggests that deep space bombardment by galactic cosmic radiation (GCR) could significantly damage gastrointestinal (GI) tissue leading to long-term functional alterations. The study also raises concern about high risk of tumor development in the stomach and colon.
Their previous work has highlighted potential impairment to brain tissue, as well as accelerated aging, on long space trips due to the effect of energetic heavy ions, which don't affect Earthlings due to the protective global magnetosphere.
Also at Engadget.
Space radiation triggers persistent stress response, increases senescent signaling, and decreases cell migration in mouse intestine (open, DOI: 10.1073/pnas.1807522115) (DX)
(Score: 2) by Runaway1956 on Thursday October 04 2018, @03:10PM
This means mice won't be making the trip to Mars. Ships have rat guards to keep rats from coming aboard, but those European rats came to the Americas all the same. Seasickness didn't kill them before they got here. Cosmic radiation may accomplish what the rat guards couldn't!!
Some of you have no idea what a rat guard is - check this out: http://www.faebermarine.com/product/rat-guard/ [faebermarine.com] https://l450v.alamy.com/450v/p6cc21/marine-rat-guard-on-a-big-cruise-liners-mooring-ropes-to-prevent-rats-getting-aboard-stock-image-p6cc21.jpg [alamy.com]