Preexisting diabetes mellitus had no effect on the no-observed-adverse-effect-level of acetaminophen in rats

The Journal of Toxicological Sciences
Sosuke KishiYoko Matsuda

Abstract

Information on the safety of chemical substances in patients with various preexisting conditions remains limited. Acetaminophen was added to the basal diet at 0, 80, 253, 800, 2530, or 8000 ppm and administered to type 2 diabetes mellitus rats (GK/Jcl) and the control male rats (Wistar) for 13 weeks. Both strains treated with 8000 ppm acetaminophen (561.4 and 567.7 mg/kg body weight/day, GK/Jcl and Wistar rats, respectively) showed decreased levels of red blood cell counts, blood urea nitrogen, creatinine, and total bilirubin compared to those of non-treated rats. Treatment with 8000 ppm of acetaminophen reduced the blood glucose and hemoglobin A1c levels of GK/Jcl rats. An increase in the relative weights of the kidneys and liver, and a decrease in the weight of the salivary glands were observed in both GK/Jcl and Wistar rats treated with 8000 ppm acetaminophen relative to those of non-treated control rats. Microscopically, both strains treated with 2530 (174.3 and 164.2 mg/kg body weight/day, GK/Jcl and Wistar rats, respectively) or 8000 ppm acetaminophen showed hepatocellular hypertrophy and degenerative lesions in the salivary glands, whereas similar lesions were not observed in non-treated rats. In conclusion, the no-obser...Continue Reading

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