Abstract

The aim of the present work was to investigate the role of triiodothyronine on liver regeneration after partial hepatectomy in the rat. During the first 3 days of liver regeneration, total protein, total DNA content and total cytochrome c oxidase activity of the residual tissue increased from 30% immediately after partial hepatectomy to 70% of the preoperative values in control rats. In triiodothyronine-treated rats, the increase in total protein was the same (70%), however, the increase in total liver DNA content and total cytochrome c oxidase acitivity was 100 and 135%, respectively during the first 3 days of regeneration. Triiodothyronine administration also increased significantly the activity of mitochondrial ATPase in regenerating liver.

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