Endocrinology, Vol 106, 1599-1606, Copyright © 1980 by Endocrine Society

ARTICLES

The effect of 17 beta-estradiol and progesterone on prostaglandin production by human endometrium maintained in organ culture

MH Abel and DT Baird

Endometrium collected from 18 normal women at various stages of the menstrual cycle was maintained in organ culture for periods of 6 days. Both prostaglandin F2 alpha (PGF2 alpha) and PGE were detected in medium from late proliferative (days 10-14; n = 13) and late secretory (days 20-26; n = 5) endometria cultured in the absence of exogenous steroids. During the first 48 h in culture, the output of PGF2 alpha by secretory endometrium was significantly greater than that of proliferative tissue. The addition of 17 beta-estradiol to the culture medium at doses ranging from 1.0-100.0 ng/ml induced a significant increase in the output of PGF2 alpha by secretory but not proliferative endometria. The addition of progesterone at doses ranging from 5.0- 500.0 ng/ml significantly reduced the output of PGF2 alpha and PGE by both proliferative and secretory endometria and prevented the 17 beta- estradiol-stimulated increase in PGF2 alpha output by secretory tissue.

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