Uranyl acetate as a direct inhibitor of DNA-binding proteins.

Zinc finger proteins, one of the largest families of DNA-binding proteins in higher eukaryotes, are so named because they require zinc ions for appropriate structure and function. Dysregulation of zinc finger-containing DNA transcription and repair proteins has been proposed as a potential mechanism for the toxic effects of some metal ions. Uranium metal has been reported to be both a cytotoxic and a genotoxic agent.

Comparison of two particulate hexavalent chromium compounds: Barium chromate is more genotoxic than lead chromate in human lung cells.

Particulate hexavalent chromium [Cr(VI)] compounds are well-established human lung carcinogens. However, their carcinogenic mechanisms are poorly understood as most investigators have used soluble Cr(VI) compounds. Recent work from our laboratory has found that barium chromate (BC) is also cytotoxic and clastogenic.

Chromium is the proximate clastogenic species for lead chromate-induced clastogenicity in human bronchial cells.

Hexavalent chromium (Cr(VI)) is a well-established human lung carcinogen with potentially widespread exposure. Solubility is a key factor in the carcinogenicity of Cr(VI), with the water-insoluble or 'particulate' compounds being the more potent carcinogens. Studies have indicated that the component ions are responsible for their clastogenicity, but it is uncertain whether chromium (Cr), lead (Pb) or some combination of the two is responsible for the clastogenic effects.