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In vitro response of rat pleural mesothelial cells to talc samples in genotoxicity assays (sister chromatid exchanges and DNA repair)

Abstract : The genotoxicity of three samples of talc has been determined using in vitro cell systems previously developed for testing asbestos fibres. The talc samples used consisted of particles of respirable size in order to test the effect of particles likely to be deposited in the lung. Genotoxicity was tested in cultures of rat pleural mesothelial cells (RPMC) using genotoxicity assays for unscheduled DNA synthesis (UDS) and sister chromatid exchanges (SCEs). The effects were compared with those obtained with negative controls (attapulgite and anatase) and positive controls (chrysotile and crocidolite asbestos). In contrast to asbestos, none of the talc samples, nor the negative controls, induced enhancement of UDS or SCEs in treated cultures in comparison with the untreated cultures.
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https://www.hal.inserm.fr/inserm-02449474
Contributor : Marie-Claude Jaurand <>
Submitted on : Wednesday, January 22, 2020 - 5:34:14 PM
Last modification on : Thursday, January 23, 2020 - 2:31:59 PM
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S Endo-Capron, A. Renier, X Janson, L Kheuang, M Jaurand. In vitro response of rat pleural mesothelial cells to talc samples in genotoxicity assays (sister chromatid exchanges and DNA repair). Toxicology in Vitro, Elsevier, 1993, 7, pp.7 - 14. ⟨10.1016/0887-2333(93)90107-G⟩. ⟨inserm-02449474⟩

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