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2-Amino-3-methylimidazo[4,5-f]quinoline (IQ) and 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) are heterocyclic amines (HCAs) derived from high temperature cooking of meat and thought to cause colon cancer in humans. Reactive nitrogen oxygen species, which are mediators of the inflammatory response, can convert these amines to the corresponding N-nitrosamines, N-NO-IQ and N-NO-MeIQx. This...
Zero-valent nickel compounds are organometallic chemicals that are used in synthetic applications and may also occur as intermediates in nickel-catalyzed hydrogenation reactions used in food processing. Few studies have been performed on their possible genotoxic actions. We have tested two commercially available examples of this class of compounds. Solubility and stability were examined. Mutagenicity...
We have isolated, cultured, and immortalised three new BigBlue transgenic rat cell lines for the study of mutation induction in vitro. The two epithelial cell lines, from the mammary gland and oral cavity, were designated BBR/ME and BBR/OE, respectively, and the third is a mammary fibroblast line designated BBR/MFib. We have characterised these cell lines with respect to chromosome number and the...
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