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  • Title: Clastogenic effects of the dithiocarbamate fungicides thiram and ziram in Chinese hamster cell lines cultured in vitro.
    Author: Mosesso P, Turchi G, Cinelli S, Di Chiara D, Fiore M, Palitti F.
    Journal: Teratog Carcinog Mutagen; 1994; 14(3):145-55. PubMed ID: 7940406.
    Abstract:
    We report here the results obtained using the dithiocarbamate fungicides thiram and ziram to investigate the induction of chromosomal aberrations (CAs) in Chinese hamster ovary (CHO) cells both in the absence and presence of S9 metabolism, and in a Chinese hamster epithelial liver (CHEL) cells which retain metabolic competence to activate different classes of promutagens/procarcinogens. Both thiram and ziram proved to be strong chromosome breaking agents in the CHEL cells and CHO cells in the presence of S9 metabolism. These findings suggest that thiram and ziram require metabolic conversion to become genetically active, and corroborate the evidence that CHEL cells are suitable to activate and detect a broad spectrum of chemical procarcinogens including these two pesticides.
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