Carcinogenicity of 2-amino-3-methylimidazo[4,5-f]quinoline in nonhuman primates: induction of tumors in three macaques
R H Adamson, U P Thorgeirsson, E G Snyderwine, S S Thorgeirsson, J Reeves, D W Dalgard, S Takayama, T Sugimura, R H Adamson, U P Thorgeirsson, E G Snyderwine, S S Thorgeirsson, J Reeves, D W Dalgard, S Takayama, T Sugimura
Abstract
The carcinogenic potential of 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) was evaluated in cynomolgus monkeys. Monkeys received IQ, beginning at the age of one year, at doses of 10 or 20 mg/kg by gavage. Thus far, IQ has induced hepatocellular carcinoma in three monkeys with a latent period of 27 to 37 months. Metastases to the lung occurred in two of the three monkeys. Microscopically, the hepatocellular carcinoma in all three cases demonstrated a trabecular pattern. These data demonstrate that IQ is a potent carcinogen in nonhuman primates and support the idea that it is a potential carcinogen for humans.
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Source: PubMed