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Type: Artigo de periódico
Title: Retinyl-palmitate Reduces Liver Fibrosis Induced By Biliary Obstruction In Rats.
Author: de Freitas Junior, Segirson
Bustorff-Silva, Joaquim Murray
Castro e Silva Junior, Orlando
Jorge, Gracinda de Lourdes
Leonardi, Luiz Sérgio
Abstract: 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. Male Wistar rats that underwent biliary obstruction were treated 2 weeks before the surgery with a dose of 50 x 10(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. 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). Under the above experimental conditions, the administration of vitamin A significantly reduced hepatic fibrosis.
Subject: Animals
Disease Models, Animal
Liver Cirrhosis
Rats, Wistar
Severity Of Illness Index
Vitamin A
Rights: aberto
Identifier DOI: 
Date Issue: -1-Uns- -1
Appears in Collections:Unicamp - Artigos e Outros Documentos

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