PMID- 29366639 OWN - NLM STAT- MEDLINE DCOM- 20180724 LR - 20180724 IS - 1096-0333 (Electronic) IS - 0041-008X (Linking) VI - 341 DP - 2018 Feb 15 TI - Combined effects of simultaneous exposure to six phthalates and emulsifier glycerol monosterate on male reproductive system in rats. PG - 87-97 LID - S0041-008X(18)30020-6 [pii] LID - 10.1016/j.taap.2018.01.013 [doi] AB - Human beings are inevitably exposed to ubiquitous phthalate esters (PEs), and simultaneously ingesting high quantities of food emulsifiers via daily diet. Glycerin monostearate (GMS) is a widely used food emulsifier. The purposes of this study were to investigate the combined effects between the mixture of six frequently used PEs (MIXPs) and GMS on male rat reproductive system, and further to explore the underlying mechanisms. Male rats were orally administered either sodium carboxymethyl cellulose as controls or MIXPs at three different low-doses with or without GMS (200mg/kg/d) by gavage. The 15-week exposure of MIXPs caused male reproductive toxicity in a dose- and time-dependent manner, including the decrease of serum testosterone and morphological damage of testis. Metabonomics analyses of urine and Western blotting analyses of steroidogenic proteins (StAR, P450scc, CYP17A1, 17beta-HSD and P450arom) indicated that MIXPs exposure down-regulated the expression of steroidogenic proteins, and might alter androgen metabolism. The results also showed that the presence of GMS exacerbated the toxicities of MIXPs to male rat reproductive system. These findings suggest that food emulsifier GMS could enhance the toxic effects of MIXPs on male hormone biosynthesis. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Gao, Hai-Tao AU - Gao HT AD - Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China. FAU - Xu, Run AU - Xu R AD - Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China. FAU - Cao, Wei-Xin AU - Cao WX AD - Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China. FAU - Di, Qian-Nan AU - Di QN AD - Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China. FAU - Li, Rui-Xian AU - Li RX AD - Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China. FAU - Lu, Lingeng AU - Lu L AD - Department of Chronic Disease Epidemiology, Yale School of Public Health, School of Medicine, Yale University, 60 College Street, New Haven, CT 06520-8034, USA. FAU - Xu, Qian AU - Xu Q AD - Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China; Suzhou Key Laboratory of Environment and Biosafety, Suzhou 215123, China. Electronic address: q_xu68@163.com. FAU - Yu, Shu-Qin AU - Yu SQ AD - Jiangsu Key Laboratory for Supramolecular Medicinal Material and Applications, College of Life Sciences, Nanjing Normal University, Nanjing 210046, China; Jiangsu Province Key Laboratory for Molecular and Medicinal Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210046, China. Electronic address: yushuqin@njnu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180203 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (Emulsifying Agents) RN - 0 (Phthalic Acids) RN - 3XMK78S47O (Testosterone) RN - 6O7F7IX66E (phthalic acid) RN - PDC6A3C0OX (Glycerol) SB - IM MH - Animals MH - Dose-Response Relationship, Drug MH - Drug Synergism MH - Emulsifying Agents/administration & dosage/*toxicity MH - Genitalia, Male/*drug effects/*metabolism MH - Glycerol/administration & dosage/*toxicity MH - Male MH - Phthalic Acids/administration & dosage/*toxicity MH - Random Allocation MH - Rats MH - Rats, Sprague-Dawley MH - Testis/drug effects/metabolism MH - Testosterone/*blood OTO - NOTNLM OT - Combined effects OT - Glycerin monostearate OT - Long-term low-dose exposure OT - Metabonomics OT - Phthalates OT - Reproductive toxicity EDAT- 2018/01/26 06:00 MHDA- 2018/07/25 06:00 CRDT- 2018/01/26 06:00 PHST- 2017/08/18 00:00 [received] PHST- 2018/01/17 00:00 [revised] PHST- 2018/01/18 00:00 [accepted] PHST- 2018/01/26 06:00 [pubmed] PHST- 2018/07/25 06:00 [medline] PHST- 2018/01/26 06:00 [entrez] AID - S0041-008X(18)30020-6 [pii] AID - 10.1016/j.taap.2018.01.013 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2018 Feb 15;341:87-97. doi: 10.1016/j.taap.2018.01.013. Epub 2018 Feb 3.