American researchers have identified changes in the body of the astronaut Scott Kelly (Scott Kelly), who spent a year aboard the ISS. For more accurate results, the scientists compared them with the condition of his twin brother Mark, the rest of the world.
Despite the long influence of microgravity, researchers found no serious epigenetic changes in cells, however, were seen consequences. Reports Hvilya.
Experts have identified epigenetic changes, i.e. changes in activity of molecules, methyl groups joining to DNA and altering gene expression. The totality of methyl groups is called the epigenome.
It is known that scientists collected blood samples from the astronauts, measured physiological parameters and conducted tests on cognitive abilities for 27 months. This time period covers the days before the flight, during the mission and after it.
During the flight, the difference in the epigenome brothers amounted to less than 5 %. After 9 months of the mission Scott had methylated 79% DNA Mark — 83 %. While Scott was methylated genes involved in the immune system.
This correlated with increased levels of biochemical markers associated with inflammatory reactions.
The astronaut also experienced stress from lack of oxygen, flattening of the eyeball and thickening of the optic nerve, changes in the intestinal microflora and weight loss.
In addition, scientists noticed some lengthening of telomeres in white blood cells. Chromosomes have undergone slight structural changes, the walls of the arteries become thicker and the collagen content in them decreased.
Cognitive skills become a little worse after the return to Earth. Within six months most of the settings back to normal, however, the expression of several genes was still broken.
Recall, the experts confirmed the rumors that the international space station may be under the control of aliens. The reason for the charges was published the video.
As reported by the portal “Znayu” NASA plans to find life on tiny planet. In the next 6 years will be known whether mankind to colonize mercury.
Also “Znayu” I wrote, scientists were able for the first time to photograph a black hole. And now she’s even got a name. Space “the beast”, is able to absorb all life, respectful called Peahi, in the Hawaiian language.