The influence of space on the human microbiome

Samples were collect from each of the skin, nose and tongue, as well as stool, blood and saliva. Hernan Lorenzi, lead author of the study: “Because the station has a very clean environment, we expect a decrease in gut diversity in space compar to pre-flight or post-flight conditions because astronauts are less expos to environmental bacteria. Although the food they eat is not sterile, it has a very low bacterial load.” However have become more diverse in space, rather than the other way around, despite limit exposure to new bacteria. And more variety is generally healthier.

The gut microbiomes of most astronauts

Typically people with inflammatory bowel disease Taiwan Phone Number List can see a decrease in microbiome diversity. An increase in diversity usually indicates greater disease resistance,” explains Lorenzi. The researchers suggest that this may be due to the large selection of products available at the station. More than 200 food and drink options are available to astronauts, according to NASA, which is more than what people normally eat on Earth. In addition to the increas diversity in the gastrointestinal tract, the internal microbiome of the astronauts suffer losses. Two types of bacteria – Akkermansia and Ruminococcus, which maintain the integrity of the lining of the digestive tract and play an important role in the breakdown of carbohydrates – decreas by five times.

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Most of the indicators return to normal

Negative changes also occurr with the skin microcover USA CFO of the astronauts. The subjects had a decrease in the number of various skin microorganisms, including gammaproteobacteria, which are part of the healthy skin microbiome. According to scientists, this may contribute to rashes and skin hypersensitivity in space. Fortunately, after the return of the astronauts to Earth. is also studi by Russian scientists. Researchers at Samara State University have studi how space flight affect the bioprofiles of enterobacteria and staphylococci, typical representatives of the human internal microflora.

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