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Effects of inhibiting prolactin secretion on the maintenance of embryonic diapause in the suckling rat

Research output: Contribution to journalArticle

R G Gosden, J A Russell, J Clarke, I Piper, A S McNeilly

Original languageEnglish
Pages (from-to)197-203
Number of pages7
JournalJournal of Endocrinology
Volume88
Issue number2
Publication statusPublished - Feb 1981

King's Authors

Abstract

Treatment of rats with bromocriptine between days 5 and 8 after the post-partum mating resulted in suppression of serum prolactin levels and caused luteal regression. Although this treatment led to embryonic resorption when suckling was prevented by removing litters soon after birth, the diapausing embryos of animals nursing a litter of eight pups were unaffected by the treatment. These results suggest that the high levels of prolactin and progesterone in the circulation during lactation are not responsible for maintenance of the diapausing state.

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