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  • Title: [Toxicological studies on pepleomycin sulfate (NK 631). I. Acute toxicity of pepleomycin in mice, rats and dogs (author's transl)].
    Author: Ito K, Irie Y, Miyamoto K, Yamashita T, Tsubosaki M, Matsuda A, Konoha N.
    Journal: Jpn J Antibiot; 1978 Dec; 31(12):719-37. PubMed ID: 83404.
    Abstract:
    Studies on acute toxicities of pepleomycin sulfate were carried out in both sexes of mice and rats, comparing with bleomycin, and male dogs. Pepleomycin was administered subcutaneously, intravenously and intraperitoneally in both sexes of mice and rats, and intravenously in male dogs respectively. Mice and rats, and intravenously in male dogs respectively. Mice and rats were observed respectively for 10 and 14 days after the administration. LD50 values were calculated by the method of Litchifield & Wilcoxon. LD50 values of pepleomycin were 4 approximately 6 times smaller than those of bleomycin in all routes of mice, but difference between them was not significant in all routes of rats. Additionally sex-difference of LD50 values was scacely recognized in all routes of both species. Toxicological findings observed in common to all routes of both species were ataxia, depression, tremor and epiphora, and only in all routes of mice, head-twitch, running-round and rolling were especially recognized as toxic behavior, which were not observed in bleomycin. Hepatic and renal lesions were recognized in biochemically and histopathologically in the survived rats. The dogs treated with pepleomycin 50 and 30 mg/kg had the decrease in food intake and the loss of body weight. They became moribund in 9 approximately 36 days after administration. In these dogs the lesions of liver and kidney were severely recognized in biochemical and histopathological findings. One of them which received 50 mg/kg recovered biochemically and histopathologically in 209 days after administration by the supplemental nutrition in early stage.
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