2021-10-072021-10-072006Noyan, S. vd. (2006). ''The effect of vitamin A on CCl4-induced hepatic injuries in rats: a histochemical, immunohistochemical and ultrastructural study''. Acta Histochemica, 107(6), 421-434.0065-1281https://doi.org/10.1016/j.acthis.2005.09.001https://www.sciencedirect.com/science/article/pii/S0065128105000838http://hdl.handle.net/11452/22258In this study, we aimed to investigate the effect of vitamin A on the transformation of the Ito cells to fibrogenic form and suppression of the development of fibrosis. Carbon tetrachloride intoxication was performed on rats for 2, 8, 12 or 20 weeks and 5 x 10(4) IU vitamin A (as retinol palmitate) was injected subcutaneously once every 4 weeks. Ito cells were detected by gold chloride impregnation, as well as desmin and alpha-smooth muscle actin (alpha-SMA) immunohistochemistry. Additionally, all groups were examined ultrastructurally. The number of Ito cells that were labelled positively with gold impregnation decreased in the fibrotic groups; however, alpha-SMA and desmin immunopositive Ito cells increased. The samples from animals that were treated with vitamin A showed an increase in labelling with gold impregnation but a decrease in alpha-SMA immunopositivity. The data showed that vitamin A can prevent hepatic injury, by suppressing the transformation of Ito cells to fibrogenic form. We conclude that vitamin A has potential for the treatment of hepatic fibrotic diseases. alpha-SMA immunohistochemistry was found to be more informative than desmin immunohistochemistry for monitoring Liver fibrosis.eninfo:eu-repo/semantics/closedAccessCell biologyIto cellsVitamin ADesminAlpha-smooth muscle actinAlpha-SMAFibrosisCollagen typesTransitional cellExtracellular-matrixPerisinusoidal cellsCarbon-tetrachlorideSmooth-muscle-actinAlcoholic liver-injuryFat-storing cellsAnimaliaLiving systems studiesImpregnationGoldDiseasesCarbon inorganic compoundsCell culturea-SMAa-smooth muscle actinVitaminsVitamin ARats, wistarRatsMicroscopy, electronMaleLiver cirrhosisImmunohistochemistryHistocytochemistryHepatocytesGold compoundsDesminCell proliferationCarbon tetrachlorideAntioxidantsAnimalsActinsArticle0002357336000022-s2.0-31544436592421431107616256175Cell biologyHepatic Stellate Cells; Liver Fibrosis; ThioacetamideGold derivativeSmooth muscle actinRetinolDesminAntioxidantActinRetinolGold chlorideDesminCarbon tetrachlorideAlpha smooth muscle actinWistar ratPathologyLiver cirrhosisLiver cellElectron microscopyDrug effectCytochemistryChemistryChemically induced disorderCell proliferationAnimalUltrastructureRatNonhumanMicroscopyMaleLiver injuryLiver fibrosisLto cellIntoxicationImmunohistochemistryHstopathologyHistochemistryFibrosisControlled studyArticleAnimal tissueAnimal modelAnimal experiment