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In Vitro Genotoxicity Assays To Evaluate The Role Of Vitamin A On Arsenic In Human Lymphocytes

机译:体外遗传毒性试验评估维生素A对人淋巴细胞中砷的作用

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Ground water contamination of arsenic in drinking water is a burning problem worldwide; especially in West Bengal (India) and Bangladesh.The main endeavor in this study was to assess the role of vitamin A (2.72μM/7ml culture), a naturally occurring antioxidant upon arsenic-induced genotoxicity; with respect to chromosomal aberrations (structural and numerical) and micronuclei.Whole blood cultures set for 72 h were exposed to test chemicals for a period of 24 h ahead of harvesting.Arsenic concentrations tested in the present study are 0.36, 0.72 and 1.4μM/7ml culture.Mitomycin C (MMC), the direct acting mutagen was used as positive control.Our data indicates that at concentrations tested, arsenic-induced increase in the mean frequencies of these genotoxic indices were diminished by vitamin A, indicating its protective role towards cells from arsenic exerted injury.
机译:饮用水中砷对地下水的污染是世界范围内的一个亟待解决的问题。这项研究的主要工作是评估维生素A(2.72μM/ 7ml培养物)的作用,维生素A是一种由于砷引起的遗传毒性而天然产生的抗氧化剂。关于染色体畸变(结构和数值)和微核。在收获前24小时将全血培养物暴露于测试化学物质的时间为24 h。本研究中测试的砷浓度为0.36、0.72和1.4μM/ 7 ml培养物。将直接作用的诱变剂丝裂霉素C(MMC)用作阳性对照。我们的数据表明,在所测试的浓度下,维生素A降低了砷诱导的这些基因毒性指数的平均频率增加,表明其对维生素A的保护作用砷引起的细胞损伤。

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