کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5851606 1561789 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
DNA damage and oxidative stress in human B lymphoblastoid cells after combined exposure to hexavalent chromium and nickel compounds
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
DNA damage and oxidative stress in human B lymphoblastoid cells after combined exposure to hexavalent chromium and nickel compounds
چکیده انگلیسی

In the present study, human B lymphoblastoid cells were exposed to potassium dichromate and/or nickel chloride for 24 h or 48 h. The cell viability and DNA damage induced by these compounds was measured with the CCK-8 assay and Comet assay, respectively. In addition, the generation of reactive oxygen species (ROS) and the levels of malondialdehyde (MDA) were measured using commercially available kits. Our results indicated that potassium dichromate could decrease cell viability and induce DNA damage in human B lymphoblastoid cells in a time - and concentration - dependent manner, but the toxicity of nickel chloride was not so obvious at concentrations used in our study. The results of ROS showed that both two compounds could only induce weak elevation of ROS level, but MDA levels were significantly enhanced. Antagonistic effects of cytotoxicity were mainly found between Cr (VI) and Ni (II), and synergistic effects of DNA damage and oxidative stress were partially found between these two compounds. Moreover, there were good correlations between the results of comet assay and the results of oxidative stress assays. It is suggested that synergistic DNA damage induced by simultaneously exposure of hexavalent chromium and nickel compounds is possibly related to oxidative stress.

Highlights► Antagonistic effects between Cr and Ni were mainly found in CCK-8 assay. ► Synergistic oxidative stress effects were partially found between Cr and Ni compounds. ► Synergistic DNA damage effects were partially found between Cr and Ni compounds.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food and Chemical Toxicology - Volume 55, May 2013, Pages 533-540
نویسندگان
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