Abstract

Objective To study reproductive functional lesions of Di (2-ethylhexyl) Phthalate(DEHP) on epididymis, and to find antagon which can repress the toxicity. Methods In vivo study,postnatal day 20 (PND20) and PND50 male KM mice were randomly divided into normal control, cornoil, DEHP and DEHP + Zinc gluconate group. In each stage and group, after been garaged for 10days, epididymal histopathologic changes and androgen receptor (A.R) and estrogen receptor (ER) inepididymis were detected. In vitro study, epididymal epithelial cells of PND20 and PNDS0 mice werecultured. Viability of epididymal epithelial ceils were measured using MTT assay, content of sialic acid(SA) and the activity of α-1,4-glucosidase and lactic acid dehydrogenase (LDH) were investigated. Re-sults DEHP induced epididymis atrophy and conspicuous histopathologic uhrastructure changes, up-regulated AR and down-regulated ER. No conspicuous variations were found in DEHP + Zinc gluco-hate group. Conclusions DEHP can induce lesions of epididymaI structure and function. Zinc is an an-tagon to DEHP toxicity. Key words: Dicthylhexyl phthalate; Reproduction; Epididymis; Zinc; Mice

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