Summary
Experiments were performed in order to gain information about the primary process leading to the production of sister chromatid exchanges (SCEs). Radical-forming substances (hydroxylamine, hydrazine and the antituberculous drug isoniazid) were examined for their effectiveness in inducing SCEs. All three substances proved successful in the induction of SCEs in the V-79 cell line of the Chinese hamster. By simultaneous application of a sulfhydryl compound (cysteine), a reduction of the hydrazine-and isoniazid-induced SCEs was achieved. Isoniazid was additionally examined in the in vivo SCE-test. At concentrations of 2–100 mg/kg body weight, it does not increase the rate of SCEs in the bone marrow of the Chinese hamster.
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Speit, G., Wick, C. & Wolf, M. Induction of sister chromatid exchanges by hydroxylamine, hydrazine and isoniazid and their inhibition by cysteine. Hum Genet 54, 155–158 (1980). https://doi.org/10.1007/BF00278964
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DOI: https://doi.org/10.1007/BF00278964