PMID- 9886860 OWN - NLM STAT- MEDLINE DCOM- 19990128 LR - 20220309 IS - 0013-7227 (Print) IS - 0013-7227 (Linking) VI - 140 IP - 1 DP - 1999 Jan TI - Ontogeny of estrogen receptor-beta expression in rat testis. PG - 478-83 AB - The recently discovered estrogen receptor-beta (ERbeta) is expressed in rodent and human testes. To obtain insight in the physiological role of ERbeta we have investigated the cell type-specific expression pattern of ERbeta messenger RNA (mRNA) and protein in the testis of rats of various ages by in situ hybridization and immunohistochemistry. In fetal testes of rats 16 days postcoitum and testes of 4-day-old animals, fetal germ cells (gonocytes) reveal the ERbeta mRNA in their cytoplasm and the ERbeta protein in their nucleus. In testes of 11- and 15-day-old rats, ERbeta mRNA and protein were detected in Sertoli cells and type A spermatogonia. No signal was found in other types of germ cells. In the adult testes, expression of ERbeta mRNA as well as ERbeta protein was found in pachytene spermatocytes from epithelial stages VII-XIV and in round spermatids from stages I-VIII. Low ERbeta expression was observed in all type A spermatogonia, including undifferentiated A spermatogonia, whereas no expression was found in In and type B spermatogonia and early spermatocytes. At all ages, Sertoli cells showed a weak hybridization signal as well as weak immunoreactivity for ERbeta. In adult testes, no ERbeta mRNA or protein was detected in the interstitial tissue, indicating that Leydig cells and peritubular myoid cells do not express ERbeta. The expression of ERbeta in fetal and late male germ cells as well as in Sertoli cells suggests that estrogens directly affect germ cells during testicular development and spermatogenesis. FAU - van Pelt, A M AU - van Pelt AM AD - Department of Cell Biology, Medical School, University of Utrecht, The Netherlands. A.Pelt@pobox.accu.uu.nl FAU - de Rooij, D G AU - de Rooij DG FAU - van der Burg, B AU - van der Burg B FAU - van der Saag, P T AU - van der Saag PT FAU - Gustafsson, J A AU - Gustafsson JA FAU - Kuiper, G G AU - Kuiper GG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Endocrinology JT - Endocrinology JID - 0375040 RN - 0 (Estrogen Receptor beta) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Estrogen) SB - IM MH - Adult MH - Animals MH - Cell Nucleus/chemistry MH - Estrogen Receptor beta MH - Humans MH - In Situ Hybridization MH - Male MH - RNA, Messenger/metabolism MH - Rats MH - Rats, Wistar MH - Receptors, Estrogen/*biosynthesis/genetics MH - Spermatogonia/chemistry MH - Testis/embryology/*metabolism EDAT- 1999/01/14 00:00 MHDA- 1999/01/14 00:01 CRDT- 1999/01/14 00:00 PHST- 1999/01/14 00:00 [pubmed] PHST- 1999/01/14 00:01 [medline] PHST- 1999/01/14 00:00 [entrez] AID - 10.1210/endo.140.1.6438 [doi] PST - ppublish SO - Endocrinology. 1999 Jan;140(1):478-83. doi: 10.1210/endo.140.1.6438.