In Vitro Reversal of Indomethacin-Blocked Ovulation by Prostaglandin F2α

Yasuo Hamada, Karen H. Wright, Edward E. Wallach
In: Fertility and Sterility · 1978 · vol. 30(6) , pp. 702–706 · doi:10.1016/s0015-0282(16)43700-3 · PMID:729832 · W2417039259
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Prostaglandin F2α reversed indomethacin-induced blockade of ovulation in vitro.

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Abstract

An in vitro perfused ovary preparation was used to study the role of prostaglandin F2alpha (PGF2alpha) in follicle rupture. The administration of PGF2alpha alone has been shown to restore indomethacin-blocked ovulation in rabbits and monkeys. In the model used, ovulation consistently occurred when human chorionic gonadotropin (hCG) was given to the intact rabbit prior to ovarian removal. hCG-induced ovulation was blocked in both perfused and in situ control ovaries by indomethacin (10 mg/kg intravenously 6 hours after hCG) given to the intact animal. The addition of PGF2alpha (1 mg/200 ml) to the perfusion fluid restored ovulation in the isolated ovary as compared with the in situ ovary (P less than 0.005) and with the perfused, untreated ovary (P less than 0.01). Following removal and perfusion of both ovaries from rabbits treated with indomethacin, ovulation occurred following the addition of PGF2alpha to the perfusate, but did not occur without PGF2alpha (P less than 0.05). These data indicate that indomethacin can block ovulation and that ovulation can be restored by the addition of PGF2alpha to the perfusion system, further supporting the significance of PGF2alpha in the process of follicular rupture.

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