Artículos de revistas
Retinyl-palmitate reduces liver fibrosis induced by biliary obstruction in rats
Registro en:
Hepato-gastroenterology. H G E Update Medical Publishing S A, v. 50, n. 49, n. 146, n. 150, 2003.
0172-6390
WOS:000180878500036
Autor
Junior, SD
Bustorff-Silva, JM
Junior, OCE
Jorge, GD
Leonardi, LS
Institución
Resumen
Background/Aims: The administration of retinoid in various experimental models of induced hepatic cirrhosis has shown antifibrogenic effects. The purpose of this study was to verify if vitamin A could interfere in hepatic fibrosis induced by biliary obstruction. Methodology: Male Wistar rats that underwent biliary obstruction were treated 2 weeks before the surgery with a dose of 50x10(3) IU retinyl-palmitate, twice a week, and then given the dosage for 5 weeks following surgery. They were then sacrificed and hepatic fragments removed to find out the biochemical dosage of hydroxyproline and the stereologic volume of collagen. Blood samples were also collected to find the biochemical dosage. Results: The rats that underwent biliary obstruction and received vitamin A presented lower levels of hepatic hydroxyproline (p < 0.001) as well as a lower percentage of collagen tissue than the untreated control rats, but they presented higher AST and ALT serum levels (p < 0.05, p < 0.05). Conclusions: Under the above experimental conditions, the administration of vitamin A significantly reduced hepatic fibrosis. 50 49 146 150