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Chronic and Low Dose Exposure to Nonlyphenol or Di(2-Ethylhexyl) Phthalate Alters Cell Proliferation and the Localization of Steroid Hormone Receptors in Uterine Endometria in Mice

발생과생식 2019년 23권 3호 p.263 ~ 275
 ( Kim Ju-Hye ) - Sungshin University Department of Biotechnology Division of Developmental Biology and Physiology

 ( Cha Sun-Yeong ) - Sungshin University Department of Biotechnology Division of Developmental Biology and Physiology
 ( Lee Min-Young ) - Sungshin University Department of Biotechnology Division of Developmental Biology and Physiology
 ( Hwang Yeon-Jeong ) - Sungshin University Department of Biotechnology Division of Developmental Biology and Physiology
 ( Yang Eun-Hyeok ) - Sungshin University Department of Biotechnology Division of Developmental Biology and Physiology
 ( Choi Don-Chan ) - Yong-In University College of Environmental Sciences Department of Life Science
 ( Lee Sung-Ho ) - Sangmyung University Department of Biotechnology
 ( Cheon Yong-Pil ) - Sungshin University Department of Biotechnology Division of Developmental Biology and Physiology

Abstract


Based on our preliminary results, we examined the possible role of low-dose and chronic-exposing of the chemicals those are known as endocrine disrupting chemical (EDC), on the proliferation of uterine endometrium and the localization of steroid receptors. Immunohistochemical or immunofluorochemical methodology were employed to evaluate the localization of antigen identified by monoclonal antibody Ki 67 protein (MKI67), estrogen receptor 1 (ESR1), estrogen receptor 2 (ESR2), and progesterone receptor (PGR). In 133 μg/L and 1,330 μg/L di(2-ethylhexyl) phthalate (DEHP) and 50 μg/L nonylphenol (NP) groups, the ratio of MKI67 positive stromal cells was significantly increased but not in 500 μg/L NP group. The ratios of MKI67 positive glandular and luminal epithelial cells were also changed by the chronic administration of NP and DEHP in tissue with dose specific manner. ESR1 signals were localized in nucleus in glandular and luminal epithelia of control group but its localization was mainly in cytoplasm in DEHP and NP administered groups. On the other hand, it was decreased at nucleus of stromal cells in 1,330 μg/L DEHP group. The colocalization patterns of these nuclear receptors were also modified by the administration of these chemicals. Such a tissue specific and dose specific localization of ESR2 and PGR were detected as ESR1 in all the uterine endometrial tissues. These results show that the chronic lows-dose exposing of NP or DEHP modify the localization and colocalization of ESRs and PGR, and of the proliferation patterns of the endometrial tissues.

키워드

Di(2-ethylhexyl) phthalate; Nonylphenol; Stromal cell; Epithelial cell; Steroid hormone receptors
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