Role of hormones of the hypophysis - thyroid gland system in providing adaptable potential at women of Far North

Questions of hormonal mechanisms of maintenance the adaptable potential from a thyroid gland remain low-studied. It is surveyed 55 almost healthy women who are constantly living in s. Nes in Nenets autonomous region at the age from 21 till 75 years. They were divided into 2 groups on national structure: 1 group – Komi and Nenets women – 29 women; the 2nd group – 26 Russian women. The adaptable capacity of blood circulation system by Bayevskiy formula is calculated. Researches of levels of system hypophysis - thyroid gland hormones are carried out. Tension of adaptation (adaptable potential 2,1-3) at inhabitants of the European North (women) is combined with low values of general T3 (triiodothyronine) at increase of level of the most active free T3 (triiodothyronine free) and activation of a hypophysial link of regulation at the europeoid population. Unlike the settled native population (Komi and Nenets) the most strongly pronounced changes from hypophysis - thyroid gland system at tension of adaptation registered among the europeoid population of the Polar region (Russian): increase in levels of TTG (thyrotropin) and free T3 at decrease in general fractions T4.