PMID- 23665278 OWN - NLM STAT- MEDLINE DCOM- 20140109 LR - 20141120 IS - 1532-0456 (Print) IS - 1532-0456 (Linking) VI - 158 IP - 1 DP - 2013 Jun TI - Effects of steroid hormones on reproduction- and detoxification-related gene expression in adult male mosquitofish, Gambusia affinis. PG - 36-43 LID - S1532-0456(13)00051-3 [pii] LID - 10.1016/j.cbpc.2013.05.001 [doi] AB - The molecular mechanisms that mediate fish reproduction and detoxification in response to steroid hormones were studied by using adult male western mosquitofish (Gambusia affinis) as sentinel species. The expression patterns of three vitellogenins (VtgA, VtgB and VtgC), two estrogen receptors (ERalpha and ERbeta), two androgen receptors (ARalpha and ARbeta), metallothionein (MT) and cytochrome P450 1A (CYP1A) in the liver and testis of adult male mosquitofish were assessed through exposure treatments with progesterone (P), testosterone (T) and 17beta-estradiol (E2), alone and in combination for eight days. The results showed that expression patterns of Vtg subtype, ER subtype, AR subtype, MT and CYP1A genes in male mosquitofish varied according to tissue and specific hormone stress. Vtg subtype mRNA expression was induced in the liver in E2-added treatments, and an up-regulation of ERalpha mRNA expression was also observed. In addition, hormone treatments increased three Vtg subtype mRNA expression levels in the testis, at least to some extent. All hormone treatments significantly inhibited ERalpha, ERbeta and ARbeta mRNA expression in the testis. Some of hormone treatments could affect MT and CYP1A gene expression in mosquitofish. In general, multiple hormone treatments showed different effects on target gene expression compared with corresponding hormone alone. The results from the present study provided valuable information on the toxicological effects of steroid hormones in mosquitofish. CI - Copyright (c) 2013 Elsevier Inc. All rights reserved. FAU - Huang, Guo-Yong AU - Huang GY AD - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. huang_gyh@sina.com FAU - Ying, Guang-Guo AU - Ying GG FAU - Liang, Yan-Qiu AU - Liang YQ FAU - Liu, You-Sheng AU - Liu YS FAU - Liu, Shuang-Shuang AU - Liu SS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130507 PL - United States TA - Comp Biochem Physiol C Toxicol Pharmacol JT - Comparative biochemistry and physiology. Toxicology & pharmacology : CBP JID - 100959500 RN - 0 (RNA, Messenger) RN - 0 (Receptors, Androgen) RN - 0 (Receptors, Estrogen) RN - 0 (Vitellogenins) RN - 3XMK78S47O (Testosterone) RN - 4G7DS2Q64Y (Progesterone) RN - 4TI98Z838E (Estradiol) RN - 9035-51-2 (Cytochrome P-450 Enzyme System) RN - 9038-94-2 (Metallothionein) SB - IM MH - Animals MH - Cyprinodontiformes/genetics/metabolism/*physiology MH - Cytochrome P-450 Enzyme System/genetics MH - Estradiol/pharmacology/*toxicity MH - Gene Expression/*drug effects/genetics MH - Inactivation, Metabolic MH - Liver/drug effects/metabolism MH - Male MH - Metallothionein/biosynthesis/genetics MH - Progesterone/pharmacology/*toxicity MH - RNA, Messenger/genetics MH - Receptors, Androgen/biosynthesis/genetics MH - Receptors, Estrogen/biosynthesis/genetics MH - Reproduction/*drug effects/genetics MH - Testis/drug effects/metabolism MH - Testosterone/pharmacology/*toxicity MH - Up-Regulation/drug effects MH - Vitellogenins/biosynthesis/genetics EDAT- 2013/05/15 06:00 MHDA- 2014/01/10 06:00 CRDT- 2013/05/14 06:00 PHST- 2013/03/24 00:00 [received] PHST- 2013/05/02 00:00 [revised] PHST- 2013/05/02 00:00 [accepted] PHST- 2013/05/14 06:00 [entrez] PHST- 2013/05/15 06:00 [pubmed] PHST- 2014/01/10 06:00 [medline] AID - S1532-0456(13)00051-3 [pii] AID - 10.1016/j.cbpc.2013.05.001 [doi] PST - ppublish SO - Comp Biochem Physiol C Toxicol Pharmacol. 2013 Jun;158(1):36-43. doi: 10.1016/j.cbpc.2013.05.001. Epub 2013 May 7.