PMID- 25888850 OWN - NLM STAT- MEDLINE DCOM- 20160407 LR - 20181113 IS - 1477-7827 (Electronic) IS - 1477-7827 (Linking) VI - 13 DP - 2015 Mar 3 TI - Exposure to di(2-ethylhexyl) phthalate inhibits luteal function via dysregulation of CD31 and prostaglandin F2alpha in pregnant mice. PG - 11 LID - 10.1186/s12958-015-0013-4 [doi] LID - 11 AB - BACKGROUND: Di(2-ethylhexyl) phthalate (DEHP) exposure reduces embryo implantations, increases embryonic loss, and decreases fetal body weights. However, whether it is associated with the alteration of luteal function remains unknown. Thus, our aim in this study was to explore the effect and mechanism of DEHP on luteal function in pregnant mice in vivo. METHODS: Mice were administered DEHP by gavage at 125, 250, 500 mg/kg/day from gestational days (GD) 1 to 9 or 13. Levels of serum progesterone and estradiol were measured by radioimmunoassay. The numbers and sizes of corpora lutea were calculated by ovarian histomorphology. Steroidogenic enzymes were assessed by qRT-PCR. CD31 protein was detected by immunocytochemistry, and prostaglandin F2alpha (PGF2alpha) levels were evaluated by enzyme immunoassay. RESULTS: Treatment with DEHP significantly inhibited progesterone secretion in pregnant mice in a dose-dependent manner but did not inhibit estradiol production on GD 9 and 13. Treatment also showed concomitant decreases in transcript levels for key steroidogenic enzymes (CYP11A, 3beta-HSD, and StAR) on GD 13. Furthermore, DEHP administration significantly reduced the numbers and sizes of corpora lutea on GD 13. No significant changes in the ratio of ovary weight vs. body weight were observed between the control group and treated animals on GD 9 and 13. In addition, treatment with DEHP significantly inhibited CD31 expression of corpora lutea, whereas plasma PGF2alpha levels in DEHP treatment groups were significantly higher compared with the control groups on GD 9 and 13. CONCLUSIONS: The results show DEHP significantly inhibits luteal function of pregnant mice in vivo, with a mechanism that seems to involve the down-regulation of progesterone and steroidogenic enzymes message RNA, the decrease in CD31 expression, and the increase in PGF2alpha secretion. FAU - Guo, Meijun AU - Guo M AD - Department of Physiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, China. 741046571@qq.com. FAU - Lai, Lidan AU - Lai L AD - Department of Physiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, China. 1037715496@qq.com. FAU - Zong, Teng AU - Zong T AD - Department of Physiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, China. 258056615@qq.com. FAU - Lin, Yan AU - Lin Y AD - Department of Obstetrics and Gynecology, Hospital of Jixi Province People, Nanchang, Jiangxi, China. lingyan1205@163.com. FAU - Yang, Bei AU - Yang B AD - Department of Physiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, China. yangbei@ncu.edu.cn. FAU - Zhang, Lu AU - Zhang L AD - Department of Physiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, China. 13393733537@163.com. FAU - Li, Mo AU - Li M AD - Department of Physiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, China. 544182657@qq.com. FAU - Kuang, Haibin AU - Kuang H AD - Department of Physiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, China. kuanghaibin@ncu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150303 PL - England TA - Reprod Biol Endocrinol JT - Reproductive biology and endocrinology : RB&E JID - 101153627 RN - 0 (Platelet Endothelial Cell Adhesion Molecule-1) RN - 4G7DS2Q64Y (Progesterone) RN - 4TI98Z838E (Estradiol) RN - B7IN85G1HY (Dinoprost) RN - C42K0PH13C (Diethylhexyl Phthalate) SB - IM MH - Animals MH - Corpus Luteum/anatomy & histology/drug effects MH - Corpus Luteum Maintenance/drug effects MH - Diethylhexyl Phthalate/*toxicity MH - Dinoprost/*metabolism MH - Estradiol/blood MH - Female MH - Immunoenzyme Techniques MH - Immunohistochemistry MH - Mice MH - Neovascularization, Physiologic/drug effects MH - Organ Size MH - Ovary/anatomy & histology/drug effects/metabolism MH - Platelet Endothelial Cell Adhesion Molecule-1/*metabolism MH - Pregnancy MH - Progesterone/blood PMC - PMC4351920 EDAT- 2015/04/19 06:00 MHDA- 2016/04/08 06:00 PMCR- 2015/03/03 CRDT- 2015/04/19 06:00 PHST- 2014/11/05 00:00 [received] PHST- 2015/02/23 00:00 [accepted] PHST- 2015/04/19 06:00 [entrez] PHST- 2015/04/19 06:00 [pubmed] PHST- 2016/04/08 06:00 [medline] PHST- 2015/03/03 00:00 [pmc-release] AID - 10.1186/s12958-015-0013-4 [pii] AID - 13 [pii] AID - 10.1186/s12958-015-0013-4 [doi] PST - epublish SO - Reprod Biol Endocrinol. 2015 Mar 3;13:11. doi: 10.1186/s12958-015-0013-4.