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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Sister-chromatid exchanges in human lymphocytes exposed to 1-p-(3-methyltriazeno)benzoic acid potassium salt.

The 1-p-(3-methyltriazeno) benzoic acid potassium salt (MTBA) is a triazeno analogue of dacarbazine, an antineoplastic agent capable of mediating the appearance of new antigenic specificities on cancer cells in mice, a phenomenon described as 'chemical xenogenization' (CX). Recently we reported the clastogenic potential of MTBA on human lymphocytes. Since sister-chromatid exchange (SCE) assay is more sensitive than clastogenic tests, at least at low drug concentrations, we assessed SCE frequencies induced by MTBA on human lymphocytes stimulated by PHA. Drug treatment at 2-500 micrograms/ml was performed in vitro prior to or after PHA addition. SCE values increased significantly in a dose-dependent manner up to 200 micrograms/ml. However, SCE frequencies, as well as chromosome breaks, did not increase dramatically. These data indicate that MTBA concentrations used for CX do not cause severe cytogenetic damage to immune cells at least in vitro.[1]

References

  1. Sister-chromatid exchanges in human lymphocytes exposed to 1-p-(3-methyltriazeno)benzoic acid potassium salt. Vernole, P., Caporossi, D., Tedeschi, B., Melino, G., Porfirio, B., Bonmassar, E., Nicoletti, B. Mutat. Res. (1988) [Pubmed]
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