[Concentration of hormones in early pregnancy in response to prostaglandin-induced abortion (author's transl)].

Minprostin-F2 alpha was injected intravenously to 20 women, and 15(S)-15-methyl-PG F2 alpha was intramuscularly injected to 19 women to induce abortion. All patients were in early pregnancy, none of them beyond the seventh week. The steroid hormones 17 beta-oestradiol and progesterone were reduced to 75 per cent of their initial concentrations in all cases of successful induction. HCG levels in plasma dropped with some delay.--The results are likely to suggest that the above decline of steroid hormones in response to abortion induced in early pregnancy was attributable to secondary regression of corpus luteum.