Are human luteinizing granulosa cells a site of action for progesterone and relaxin?

L. H. Greenberg, R. L. Stouffer, R. M. Brenner, T. A. Molskness, S. A. Hild-Petito, Q. Yu

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Specific nuclear staining for progesterone receptor (PR) was detected by immunocytochemistry in human granulosa cells (GCs) obtained from in vitro fertilization protocols. The percent of PR-positive cells (60% to 80%) remained unchanged during 7 days of culture in media containing fetal calf serum, in the absence of human chorionic gonadotropin (hCG) or the progesterone antagonist RU486. Progesterone (P) production by GCs cultured on extracellular matrix from bovine corneal endothelial cells was stimulated by hCG and prostaglandin E2 (PGE2). However, addition of RU486 or human relaxin had no effect on control, hCG-, or PGE2-stimulated P production. Thus, the receptor data are consistent with an autocrine action of P in luteinizing GCs, but initial experiments in cell culture did not define a role for P or relaxin in modulating luteal steroidogenesis.

Original languageEnglish (US)
Pages (from-to)446-453
Number of pages8
JournalFertility and sterility
Issue number3
StatePublished - 1990
Externally publishedYes

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynecology


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