Carcinogenicity of quinoline by drinking-water administration in rats and mice

The Journal of Toxicological Sciences
Michiharu MatsumotoShoji Fukushima

Abstract

The carcinogenicity of quinoline was examined by administrating quinoline in the drinking water to groups of 50 F344/DuCrj rats and 50 Crj: BDF1 mice of each sex. In rats, the doses of quinoline were 0, 200, 400, and 800 ppm for males and 0, 150, 300, and 600 ppm for females. In male rats, administration of quinoline was terminated at week 96 due to high mortality caused by tumors. There were significant increases of hepatocellular adenomas, hepatocellular carcinomas, hepatocellular adenomas and/or carcinomas (combined), and liver hemangiomas, hemangiosarcomas, hemangiomas and/or hemangiosarcomas (combined) in both male and female rats, and nasal esthesioneuroepitheliomas and sarcoma NOS (not otherwise specified) in males. In mice, doses of quinoline were 0, 150, 300 and 600 ppm for both males and females. Administration of quinoline was terminated at week 65 in males and at week 50 in females due to high mortality caused by tumors. There were marked increases of hemangiomas, hemangiosarcomas, and hemangiomas and/or hemangiosarcomas (combined) in the retroperitoneum, mesenterium, and liver in males, and in the retroperitoneum, mesenterium, peritoneum, and subcutis in females. Additionally, histiocytic sarcomas were statisticall...Continue Reading

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