Plasma concentrations of progesterone and 13,14-dihydro-15-keto-prostaglandin F-2 alpha during regression of the corpora lutea of lactation in the bandicoot (Isoodon macrourus).
Plasma progesterone concentrations (mean +/- s.e.m.) declined from 7.5 +/- 1.2 ng/ml and 7.5 +/- 1.0 ng/ml to less than 1 ng/ml after removal of pouch young (RPY) from bandicoots at Days 24 and 30 of lactation respectively. In all 7 bandicoots, the corpora lutea of lactation showed signs of regression and, in 5 of these bandicoots, a premature ovulation had occurred 6-9 days after RPY. There was no change in the concentration of PGFM after RPY, and uterine prostaglandin F-2 alpha may not be involved in luteal regression in the bandicoot.
D000818:Animals; D015237:Dinoprost / Q000031:analogs & derivatives*; D005260:Female; D007774:Lactation; D003341:Luteolysis; D008394:Marsupialia / Q000097:blood / Q000502:physiology*; D010060:Ovulation; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D011460:Prostaglandins F / Q000097:blood*
D011460:Prostaglandins F; C008228:15-keto-13,14-dihydroprostaglandin F2alpha; D011374:Progesterone; D015237:Dinoprost