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Hepatic regeneration of cirrhotic liver following partial hepatectomy was evaluated in the rats following portal triad cross clamp (Pringle's maneuver). Cirrhotic rats were induced by repeated intraperitoneal injection of thioacetamide. Sixty eight percent of partial hepatectomy was performed under general anesthesia with or without total hepatic normothermic ischemia. Pringle's maneuver consisted of 4 times repetition of the combination of 15-minute ischemia and 15-minute reperfusion. Rats were sacrificed on 1, 7, and 28 postoperative days. The increasing rate of regenerated liver, the labeling index (LI) by histochemical measurement of BrdU positive hepatocyte, biochemical tests of the blood were evaluated in non cirrhotic and cirrhotic rats. Cirrhotic rats tolerated Pringle's maneuver well, without portal congestion as observed in non cirrhotic rats, suggesting the formation of porto-systemic shunt in cirrhotic rats. The inhibition in DNA synthesis and hepatic regeneration rate was observed in liver cirrhosis. However, no statistical significant difference in hepatic regeneration was observed in cirrhotic rats with or without Pringle's maneuver. In conclusion, the rat with cirrhotic liver tolerated Pringle's maneuver well and the maneuver itself was not harmful for hepatic regeneration following the partial resection.
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