[Immune system in pregnant women exposed to extreme climate conditions of the Aral coast line].

Fifty-eight women aged 18 to 38 with preserved reproductive function were examined, 42 of them with a normal course of gestation and 16 nonpregnant ones. Cellular and humoral immunity parameters were studied: absolute and relative counts of T-lymphocytes and levels of serum IgA, IgG, and IgM. The immunity status of women living near the Aral sea was changed: the absolute and relative counts of T-lymphocytes were reduced in both groups. Pregnant women had a trend to reduction of T-lymphocyte count in the first gestation trimester and a reliable increase of the levels of T-lymphocytes and theophyllin-sensitive cells in the third trimester (p < 0.001). The lowest counts of T-lymphocytes and theophyllin-sensitive cells were observed in primigravidas vs. multigravidas and multiparas.