[Effects of cianidanol (KB-53) on liver cirrhosis induced by CCl4 in rats: a pathological investigation].

The therapeutic effects of cianidanol on the rat liver cirrhosis induced by CCl4 were investigated by means of pathological examination. Rats were administered with CCl4 subcutaneously twice a week for a consecutive 10 weeks. From a macroscopical viewpoint, pailing grayish discoloration, granular hyperplastic nodules and the disappearance of luster on the surface of the liver, and the formation of pseudolobule on the cut surface were observed in the control group. In the histopathological findings, degenerative fatty change and ballooning degeneration of parenchymal liver cells, a formation of pseudolobule caused by septal fibrosis proliferation, an acinar arrangement caused by pericellular fibrosis, and a cholangiollar proliferation were observed. All these abnormalities were diminished by the oral administration of 200 and 400 mg/kg of cianidanol for 7 days. The therapeutic effects of cianidanol were dose-dependent on the liver cirrhosis rats. Consequently, it is suggested that cianidanol has therapeutic effects on liver cirrhosis induced by CCl4 by relieving hepatocytes disorder, improving regeneration of hepatocytes and the absorption of proliferated fibrotic tissues.