PMID- 17585182 OWN - NLM STAT- MEDLINE DCOM- 20071227 LR - 20190608 IS - 0916-8818 (Print) IS - 0916-8818 (Linking) VI - 53 IP - 5 DP - 2007 Oct TI - Immunolocalization of steroidogenic enzymes in equine fetal adrenal glands during mid-late gestation. PG - 1093-8 AB - To elucidate the relationship between steroidogenic hormones and developing adrenal glands, we investigated the immunolocalization of steroidogenic enzymes in equine fetal adrenal glands during mid-late gestation. Fetal adrenal glands were obtained from three horses at 217, 225 and 235 days of gestation. Steroidogenic enzymes were immunolocalized using polyclonal antisera raised against bovine adrenal cholesterol side-chain cleavage cytochrome P450 (P450scc), human placental 3beta-hydroxysteroid dehydrogenase (3betaHSD), porcine testicular 17alpha-hydroxylase cytochrome P450 (P450c17) and human placental aromatase cytochrome P450 (P450arom). Histologically, cortex and medulla cells were clearly observed in the three fetal adrenal gland tissue samples. P450scc and P450c17 were identified in cortex cells close to medulla cells and in some medulla cells in the fetal adrenal glands. P450arom was present in both cortex and medulla cells in the fetal adrenal glands. However, 3betaHSD was not found in any of the equine fetal adrenal gland tissue samples. These results suggest that equine fetal adrenal glands have the ability to synthesize androgen and estrogen, which may play an important physiological role in the development of equine fetal adrenal glands. FAU - Weng, Qiang AU - Weng Q AD - College of Biological Science and Technology, Beijing Forestry University, Beijing, P.R. China. weng3@msn.com FAU - Tanaka, Yumiko AU - Tanaka Y FAU - Taniyama, Hiroyuki AU - Taniyama H FAU - Tsunoda, Nobuo AU - Tsunoda N FAU - Nambo, Yasuo AU - Nambo Y FAU - Watanabe, Gen AU - Watanabe G FAU - Taya, Kazuyoshi AU - Taya K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070622 PL - Japan TA - J Reprod Dev JT - The Journal of reproduction and development JID - 9438792 RN - 0 (Androgens) RN - 0 (Estrogens) RN - EC 1.1.- (3-Hydroxysteroid Dehydrogenases) RN - EC 1.14.- (Steroid Hydroxylases) SB - IM MH - 3-Hydroxysteroid Dehydrogenases/analysis MH - Adrenal Glands/*embryology/*enzymology MH - Androgens/biosynthesis MH - Animals MH - Cattle MH - Estrogens/biosynthesis MH - Female MH - Fetus/*enzymology MH - Horses/*embryology MH - Humans MH - Immunohistochemistry MH - Pregnancy MH - Steroid Hydroxylases/*analysis EDAT- 2007/06/23 09:00 MHDA- 2007/12/28 09:00 CRDT- 2007/06/23 09:00 PHST- 2007/06/23 09:00 [pubmed] PHST- 2007/12/28 09:00 [medline] PHST- 2007/06/23 09:00 [entrez] AID - JST.JSTAGE/jrd/18159 [pii] AID - 10.1262/jrd.18159 [doi] PST - ppublish SO - J Reprod Dev. 2007 Oct;53(5):1093-8. doi: 10.1262/jrd.18159. Epub 2007 Jun 22.