Acute and sub-chronic toxicity study of diaveridine in Wistar rats

Regulatory Toxicology and Pharmacology : RTP
Xu WangZonghui Yuan


Diaveridine, a developed dihydrofolate reductase inhibitor, has been widely used as anticoccidial drug and antibacterial synergist. However, few studies have been performed to investigate its toxicity. To provide detailed toxicity with a wide spectrum of doses for diaveridine, acute and sub-chronic toxicity studies were conducted. Calculated LD50 was 2330 mg/kg b.w. in females and 3100 mg/kg b.w. in males, and chromodacryorrhea was noted in some females before their death. In the sub-chronic study, diaveridine was fed to Wistar rats during 90 days at dietary levels of 0, 23, 230, 1150 and 2000 mg/kg, which were about 0, 2.0-2.3, 21.0-23.5, 115.2-126.9 and 212.4-217.9 mg/kg b.w., respectively. Significant decrease in body weights in both genders at 1150 and 2000 mg/kg groups and significant increases in relative weights of brain in both genders, liver in females, kidneys and testis in males, alkaline phosphatase and potassium in both genders at 2000 mg/kg diet were noted. Significant decrease in absolute weights of several organs, hemoglobin and red blood cell count in both genders, albumin and total protein in females were observed at 2000 mg/kg diet. Fibroblasts in the kidneys, cell swelling of the glomerular zone in the adren...Continue Reading


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