Summary
Two groups of male and female Sprague-Dawley rats (50 animals/group per sex) were treated with either 15.37 or 46.77 μmole of 1,1,2-TCE in DMSO/rat for 2 years. The animals were treated once a week by s.c. injection of test compound in the skin of neck. Two groups of controls received either DMSO or no treatment at all. The incidence of benign mesenchymal and epithelial tumors was not significant when compared with either DMSO-treated or untreated controls. The animals treated with 46.77 μmole 1,1,2-TCE significantly developed sarcomas when compared with the untreated controls. In a further experiment, either 40 μmole or 160 μmole 1,1,2-TCE was injected into male Wistar rats and the metabolites, TdGA and HEMA, were determined in 24-h urine samples. Comparative studies were carried out giving equimolar amounts of chloroethanol and 2-chloroacetaldehyde diethyl acetal. Analysis of the metabolites showed that no detectable HEMA was excreted in urine after treatment of rats with 1,1,2-TCE or chloroethanol. TdGA was excreted in urine much more among chloroacetaldehyde-treated animals than among 1,1,2-TCE- or chloroethanol-treated rats.
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Abbreviations
- 1,1,2-TCE:
-
1,1,2-trichloroethane
- DMSO:
-
dimethyl-sulfoxide
- Hema:
-
hydroxyethyl mercapturic acid
- TdGA:
-
thiodiglycolic acid
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Norpoth, K., Heger, M., Müller, G. et al. Investigations on metabolism and carcinogenicity of 1,1,2-trichloroethane. J Cancer Res Clin Oncol 114, 158–162 (1988). https://doi.org/10.1007/BF00417830
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DOI: https://doi.org/10.1007/BF00417830