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Genetic and biochemical investigation of chloral hydrate in vitro and in vivo


, : Genetic and biochemical investigation of chloral hydrate in vitro and in vivo. Mutation Research 141(1): 19-22

Chloral hydrate (CH), a metabolite of trichloroethylene (TCE), was studied in vitro using the D7 diploid strain of Saccharomyces cerevisiae, with and without a mammalian microsomal activation system (S9 fraction), and in vivo by intrasanguineous host-mediated assay (HMA). The in vivo effects on the hepatic microsomal monooxygenase induced by CH in mice pretreated with .beta.-naphthoflavone (.beta.-NF) and Na-phenobarbital (PB) were also investigated. Chloral hydrate induced a significant increase of mitotic gene conversion in D7 strain both in vivo and in vitro. The enzymatic determinations in mice showed a decrease in aminopyrine N-demethylase (APD) and p-nitroanisole O-demethylase (p-NAD) activities (about 37% and 29%, respectively) after 1 acute dose of CH. Stability experiments, carried out in the conditions of the liver microsomal assay (LMA), showed an increase of residual activity, after 1 h of preincubation with respect to the control (about 22% and 9% for APD and p-NAD, respectively).

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PMID: 6384771


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