Title: Studies on Prostaglandin and Luteolysis in the Pseudopregnant Rabbit
Abstract: The ability of pulsatile infusion of prostaglandin F2$aL (PGF2$aL) or 13, 14–dihydro prostaglandin F2$aL to induce corpus luteum regression was examined in the pseudopregnant rabbit. Each prostaglandin was infused in 5, 1–hour pulses (1 per 6 hours) during a 25–hour period starting day 9 or 10 of pseudopregnancy. Although both prostaglandins were capable of inhibiting progesterone secretion, pulse administration was no more effective than continuous infusion. To determine if PGF2$aL was released into the systemic circulation during spontaneous luteolysis, starting day 12 of pseudopregnancy serial blood samples were collected every 90 minutes from the jugular vein. Prostaglandin F levels remained steady (1–2 ng/ml) over the collection period with no apparent increase associated with functional luteolysis. Although prostaglandins may be involved in luteolysis in the rabbit, the present results suggest that it is unlikely that PGF2$aL by itself is responsible for the sustained fall in progesterone secretion at the end of the pseudopregnancy.
Publication Year: 1990
Publication Date: 1990-01-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
Access and Citation
Cited By Count: 2
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