How has NASA astronautsspace life changed in the past year? Some genetic changes

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 How has NASA astronautsspace life changed in the past year? Some genetic changes


BEIJING, April 12 (Xinhua) -- NASA released the results of a study on April 11, local time. Between 2015 and 2016, astronaut Scott Kelly, who spent 340 days on the International Space Station, changed from weight to gene.

Source: NASA astronauts work outside the International Space Station.

During Scotts space mission, carotid and retinal thickening, weight loss, intestinal microorganisms, cognitive impairment, DNA damage, gene expression changes, telomere elongation at the end of chromosomes were observed.

Most of the changes in Scotts body returned to normal after returning from the space station, with some exceptions, compared with Mark Kelly, the Earths twin brother.

It is reported that the small part of Scotts immune system and DNA repair that failed to return to normal represents potential long-term damage in terms of genetic genes.

The return trip is much worse than learning in space, Kelly said. For the first few days, I felt like I had the flu. For a long time, I felt tired.

The researchers also pointed out that there were limitations to the study. The study will only reflect the Scott and Mark brothers, and will not be validated with other astronauts. Scotts space station is also located in the protective layer of the Earths magnetic field, and has not been attacked by deep space radiation.

However, NASA Headquarters Chief Health and Medical Officer Pork still said: Twin research is an important step in understanding genetics and gene expression in human space flight.

In NASAs mission to the moon and Mars, this will help understand the need for personalized medical care and its role in maintaining astronautshealth in deep space exploration, he said.

Source of this article: Responsible Editor of CNN: Su Hong-hung_NBJ9980