Mechanisms of phthalate ester toxicity in the female reproductive system.
Mechanisms of phthalate ester toxicity in the female reproductive system.
复制标题
女性生殖系统中邻苯二甲酸酯毒性的机制。
DOI:
10.1289/ehp.5658
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发表时间:
2003-02
影响因子:
10.4
通讯作者:
Davis, BJ
中科院分区:
文献类型:
--
作者:
Lovekamp-Swan, T;Davis, BJ
Phthalates are high-production-volume synthetic chemicals with ubiquitous human exposures because of their use in plastics and other common consumer products. Recent epidemiologic evidence suggests that women have a unique exposure profile to phthalates, which raises concern about the potential health hazards posed by such exposures. Research in our laboratory examines how phthalates interact with the female reproductive system in animal models to provide insights into the potential health effects of these chemicals in women. Here we review our work and the work of others studying these mechanisms and propose a model for the ovarian action of di-(2-ethylhexyl) phthalate (DEHP). In vivo, DEHP (2 g/kg) causes decreased serum estradiol levels, prolonged estrous cycles, and no ovulations in adult, cycling rats. In vitro, monoethylhexyl phthalate (MEHP; the active metabolite of DEHP) decreases granulosa cell aromatase RNA message and protein levels in a dose-dependent manner. MEHP is unique among the phthalates in its suppression of aromatase and in its ability to activate peroxisome proliferator-activated receptors (PPARs). We hypothesize that MEHP activates the PPARs to suppress aromatase in the granulosa cell. MEHP-, PPAR alpha-, and PPAR gamma-specific ligands all similarly decreased estradiol production and RNA message levels of aromatase in vitro. Our model shows that MEHP acts on the granulosa cell by decreasing cAMP stimulated by follicle stimulating hormone and by activating the PPARs, which leads to decreased aromatase transcription. Thus, the environmental contaminant DEHP, through its metabolite MEHP, acts through a receptor-mediated signaling pathway to suppress estradiol production in the ovary, leading to anovulation.
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影响因子:
5.8
作者:
Dunaif, A;Scott, D;Whitcomb, R
通讯作者:
Whitcomb, R
影响因子:
4
作者:
Fan, LQ;Cattley, RC;Corton, JC
通讯作者:
Corton, JC
DOI:
10.1016/0006-291x(90)91136-g
发表时间:
1990-05-16
影响因子:
3.1
作者:
KANDA, T;ONO, T;MUTO, T
通讯作者:
MUTO, T
影响因子:
10.4
作者:
Blount BC;Silva MJ;Caudill SP;Needham LL;Pirkle JL;Sampson EJ;Lucier GW;Jackson RJ;Brock JW
通讯作者:
Brock JW
影响因子:
--
作者:
Gonzalez-Robayna, IJ;Alliston, TN;Richards, JS
通讯作者:
Richards, JS