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Abstract Title:

Selenium attenuates apoptosis and p-AMPK expressions in fluoride-induced NRK-52E cells.

Abstract Source:

Environ Sci Pollut Res Int. 2019 May ;26(15):15685-15697. Epub 2019 Apr 4. PMID: 30949948

Abstract Author(s):

Jiping Gao, Yu Wang, Guoqiang Xu, Jianing Wei, Kai Chang, Xiaolin Tian, Maolin Liu, Xiaoyan Yan, Meijun Huo, Guohua Song

Article Affiliation:

Jiping Gao

Abstract:

Fluoride is widely distributed in the environment, and excessive fluoride intake can induce cytotoxicity, DNA damage, and cell cycle changes in many tissues and organs, including the kidney. Accumulating evidence demonstrates that selenium (Se) administration ameliorates sodium fluoride (NaF)-induced kidney damage. However, the potentially beneficial effects of Se against NaF-induced cytotoxicity of the kidney and the underlying molecular mechanisms of this protection are not fully understood. At present, in this study, the normal rat kidney cell (NRK-52E) was used to investigate the potentially protective mechanism of Se against NaF-induced apoptosis, by using the methods of pathology, colorimetric 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, flow cytometry, and Western blot. The experiment was designed with a control group, two NaF-treated groups (NaF, 5, 20 mg/L), two sodium selenite-treated groups (NaSeO, 17.1, 34.2 μg/L), and four Se + NaF-treated groups (NaSeO, 17.1, 34.2 μg/L; NaF, 5, 20 mg/L). The results indicate that selenium can attenuate apoptosis and AMPK phosphorylation in the NRK-52E cell induced with fluoride. These results imply that selenium is capable to modulate fluoride-induced NRK-52E cell apoptosis via regulating the expression levels of the proteins involved in mitochondrial pathway and changes in p-AMPK expressions may also be a key process in preventing fluorosis.

Study Type : In Vitro Study

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