[Phospholipids and structural modification of tissues and cell membranes for adaptation in high altitude mountains].

The nature of the impact of physical factors of high altitudes (3200 m) on the lipids of tissues and membranes of animals was researched. It was established that the adaptation process in Wistar rats was followed by peroxide degradation and subsequent modification of the phospholipids' structure of tissues and microsomal membranes. Adaptive phospholipids reconstruction takes place in microsomal membranes in the tissues of the lungs, brain, liver and skeletal muscles.

[Duration of maintenance of increased bodily resistance with different regimes of adapatation to oxygen deficiency].

The altitude resistance of albino rats was studied via measurements of their altitude threshold on the 3rd, 7, 15, 30, 45th days of their step-by-step acclimatization to highlands (Tuya-Ashu pass at an altitude of 3200 m), on the 3rd, 7, 15, 30, 45th days of their nonstep-by-step acclimatization at the Tuya-Ashu pass and on the 3rd, 7, 15, 30, 45th days of their altitude chamber training. The step-by-step acclimatization of animals included their 15-day exposure to an altitude of 2200 m and subsequent stay in lowlands where their altitude threshold was recorded on the 3rd, 10, 20 30, 40, 60, 80th days. The data obtained indicate that step-by-step acclimatization to highlands results in a more significant increase of the altitude resistance of the animal body and a longer maintenance of the resistance on return to lowlands.