PMID- 20075416 OWN - NLM STAT- MEDLINE DCOM- 20110104 LR - 20211020 IS - 1939-4640 (Electronic) IS - 0196-3635 (Linking) VI - 31 IP - 4 DP - 2010 Jul-Aug TI - Glucocorticoid suppresses steroidogenesis in rat progenitor Leydig cells. PG - 365-71 LID - 10.2164/jandrol.109.009019 [doi] AB - Glucocorticoid (GC) inhibits testosterone production in adult Leydig cells by the glucocorticoid receptor (GR). However, whether GC affects the development of Leydig cells is unclear. The goal of the present study is to investigate the effects of GC on steroidogenesis of rat progenitor Leydig cells (PLCs) in vitro. Dexamethasone (DEX) inhibited androsterone (AO) production in PLCs. The GR antagonist RU38486 reversed the DEX-induced inhibition of AO, whereas the mineralocorticoid receptor antagonist RU28318 did not. RU38486 also reversed DEX-induced reductions in steady-state mRNA levels of steroidogenic acute regulatory protein (Star) and 3beta-hydroxysteroid dehydrogenase 1 (Hsd3b1). Steroidogenic acute regulatory protein (StAR) protein expression and 3beta-hydroxysteroid dehydrogenase (3betaHSD) enzyme activity were affected similarly. These results show that GCs inhibit steroidogenesis of PLCs by suppression of StAR and 3betaHSD via a GR-mediated mechanism. FAU - Xiao, Ye-Chen AU - Xiao YC AD - Population Council, New York, NY 10065, USA. FAU - Huang, Ya-Dong AU - Huang YD FAU - Hardy, Dianne O AU - Hardy DO FAU - Li, Xiao-Kun AU - Li XK FAU - Ge, Ren-Shan AU - Ge RS LA - eng GR - R01 HD050570/HD/NICHD NIH HHS/United States GR - R01 HD050570-03/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20100114 PL - United States TA - J Androl JT - Journal of andrology JID - 8106453 RN - 0 (Androgens) RN - 0 (Glucocorticoids) RN - 0 (Mineralocorticoid Receptor Antagonists) RN - 0 (Phosphoproteins) RN - 0 (Receptors, Glucocorticoid) RN - 0 (steroidogenic acute regulatory protein) RN - 27O7W4T232 (Spironolactone) RN - 320T6RNW1F (Mifepristone) RN - 76676-34-1 (RU 28318) RN - 7S5I7G3JQL (Dexamethasone) RN - EC 1.1.- (3-Hydroxysteroid Dehydrogenases) SB - IM MH - 3-Hydroxysteroid Dehydrogenases/metabolism MH - Androgens/*biosynthesis MH - Animals MH - Dexamethasone/*pharmacology MH - Gene Expression/drug effects MH - Glucocorticoids/*pharmacology MH - Leydig Cells/*drug effects MH - Male MH - Mifepristone/pharmacology MH - Mineralocorticoid Receptor Antagonists/pharmacology MH - Phosphoproteins/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Glucocorticoid/*antagonists & inhibitors MH - Spironolactone/analogs & derivatives/pharmacology MH - Stem Cells/drug effects EDAT- 2010/01/16 06:00 MHDA- 2011/01/05 06:00 CRDT- 2010/01/16 06:00 PHST- 2010/01/16 06:00 [entrez] PHST- 2010/01/16 06:00 [pubmed] PHST- 2011/01/05 06:00 [medline] AID - jandrol.109.009019 [pii] AID - 10.2164/jandrol.109.009019 [doi] PST - ppublish SO - J Androl. 2010 Jul-Aug;31(4):365-71. doi: 10.2164/jandrol.109.009019. Epub 2010 Jan 14.