[The effects of bromocriptine on anovulatory patients with high LH and euprolactinemia]

It is well known that an acute administration of Bromocriptine (dopamine agonist) suppresses the serum LH level either in normal women or in women with polycystic ovary syndrome, in whom the serum LH level is elevated. The present study was carried out to examine the effectiveness of Bromocriptine on anovulatory women with a high LH level (serum LH greater than 30 mIU/ml). Bromocriptine was administered for 3 months, 5 mg daily, to 9 anovulatory women with euprolactinemia (serum PRL less than 25 ng/ml). Ovulation was observed by their BBT charts. Before and after the treatment of Bromocriptine, FSH, LH and PRL secreting capacities were tested by LHRH and TRH injection. Also, estrone, estradiol and testosterone levels were measured before and after the Bromocriptine administration. Resting levels of LH, FSH and PRL were 45.4 +/- 11.0 mIU/ml, 11.4 +/- 3.0 mIU/ml, and 14.3 +/- 4.7 ng/ml (M +/- SD), respectively, before the treatment. As a result of the treatment, the LH level was markedly decreased to 27.3 +/- 14.5 (M +/- SD, P less than 0.05), and PRL decreased to 3.76 +/- 4.2 ng/ml (M +/- SD, P less than 0.005). On the other hand, FSH did not show a marked change. The responsiveness of LH to LHRH before the treatment showed a marked increase, which was suppressed by Bromocriptine. However, FSH showed no change. The responsiveness of PRL to TRH was suppressed by Bromocriptine. Serum estrone, estradiol and testosterone levels before the treatment were 115.5 +/- 76.7 pg/ml, 93.7 +/- 61.0 pg/ml and 0.809 +/- 0.209 ng/ml (M +/- SD), respectively, which showed no significant change after the treatment.(ABSTRACT TRUNCATED AT 250 WORDS)