title: [Estrogenic activities of parabens].
abstract: Studies indicated that parabens, used as anti-microbial agents in food, cosmetics, and pharmaceuticals, produced a positive uterotrophic response in vivo. They also damaged the late stages of spermatogenesis, altered proportion of pups born alive, and body weight of offspring. They reduced the number of sperm in the epididymis, and the sperm motile activity in male offspring. Parabens could compete with [3H] 17beta-estradiol for binding to the estrogen receptor. The proliferation of two estrogen-dependent cell lines MCF-7 and ZR-75-1 could be increased by parabens. They also increased expression of both transfected and endogenous estrogen-regulated genes in MCF-7 cells. The studies demonstrated parabens were weakly estrogenic.
authors.affiliation: Institute of Occupational Health and Poisoning Control, China CDC, Beijing 100050, China.
authors.forename: Jun-Hui
authors.initials: JH
authors.lastname: Ge
authors.forename: Bing
authors.initials: B
authors.lastname: Chang
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D005260:Female; D005520:Food Preservatives / Q000009:adverse effects*; D015870:Gene Expression / Q000187:drug effects; D006801:Humans; D008297:Male; D051379:Mice; D009929:Organ Size / Q000187:drug effects; D010226:Parabens / Q000009:adverse effects*; D011310:Preservatives, Pharmaceutical / Q000009:adverse effects*; D051381:Rats; D011960:Receptors, Estrogen / Q000187:drug effects* / Q000502:physiology; D013081:Sperm Motility / Q000187:drug effects; D013091:Spermatogenesis / Q000187:drug effects; D014599:Uterus / Q000187:drug effects
chemical_list: D005520:Food Preservatives; D010226:Parabens; D011310:Preservatives, Pharmaceutical; D011960:Receptors, Estrogen