Due to the emotional stress before the take off the lactoflora of 24 cosmonouts shows distinct changes regarding the spectrum of different species of Lactobacilli. Compared to long-time flights after short-time flights even stronger alterations are observed. The reason is that the disturbances which take place before the take-off as to the short space of time cannot be balanced by the macroorganism. Additionally, after a certain adaptive period the factors of the space travel begin to act. There are characteristic individual particularities regarding the number of Lactobacilli in the saliva and the feces of the cosmonouts.
In this overview the actual international knowledge regarding phenomenons and their proven or speculated mechanisms of adaptative microecological, hormonal and immunological responses to neuroemotional stress conditions including space-flights is represented. In most cases a decreased stability of the intestinal microflora provokes further reactions of the body. The necessity to predict the various possible disorders and to find optimal measures for their prophylaxis and elimination is emphasized.
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