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  • Title: Genotoxicity of cadmium chloride in human lymphocytes evaluated by the comet assay and cytogenetic tests.
    Author: Rozgaj R, Kasuba V, Fucić A.
    Journal: J Trace Elem Med Biol; 2002; 16(3):187-92. PubMed ID: 12437157.
    Abstract:
    Peripheral blood lymphocytes were tested in vitro for genotoxic effects of cadmium chloride. Whole blood samples of four healthy, non-smoking subjects were preincubated with CdCl2 in concentrations of 10(-4), 10(-3), and 5 . 10(-3) mol/L for three hours before the cells were assessed for DNA-damage using the single cell alkaline gel electrophoresis assay (comet assay) or cultivated for chromosomal aberrations (CA), sister chromatid exchanges (SCE), and the micronucleus (MN) test. The comet assay showed notable interindividual differences. The results of the cytogenetic tests showed an increase in the frequency of CA, MN, and SCE with CdCl2 in the treated cultures, yet none was able to show a correlation between concentrations of cadmium chloride and the frequency of damages. The MN slides were stained with Giemsa and with DNA fluorochrome 4', 6'-diamidino-2-phenylindole (DAPI). The frequency of MN in slides stained with DAPI was significantly higher than in those stained with Giemsa, which might be due to an underestimation of small micronuclei in Giemsa-stained slides.
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