Induction of pathological changes and impaired expression of cytokines in developing female rat spleen after chronic excess fluoride exposure
2019
This study was designed to investigate the effects of excessive fluoride on spleen toxicity. Twenty-four healthy female rats were randomly divided into two groups, each of 12 rats. Each group of female rats was given a control diet and either F− = 0 mg/L or an excessive F− = 150 mg/L in the drinking water for 120 days. The histomorphological and ultrastructural changes in their splenic tissues were observed under light and transmission electron microscopes. DNA damage and splenocyte apoptosis were examined using the micronucleus (MN) assay, single-cell gel electrophoresis (SCGE), and flow cytometry. The expression levels of cytokines, including interleukin (IL)-1β, IL-2, IL-6, and tumor necrosis factor (TNF)-α, were determined through immunohistochemistry and Western-blot analysis. Results demonstrated that the histomorphological characteristics and ultrastructure of the splenic tissues were affected by excessive fluoride. Nuclear dying, nuclear membrane dissolution, mitochondrial vacuolation, and endopla...
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