title: Inhibitory effect of acyclic retinoid (polyprenoic acid) on hepatic fibrosis in CCl4-treated rats.
abstract: A study was conducted to examine the inhibitory effect of acyclic retinoid (polyprenoic acid) on the development of hepatic fibrosis induced by CCl4 in rats. Oral administration of the compound brought about a significant reduction in both serum and tissue levels of immunoreactive prolyl hydroxylase, a key enzyme of collagen formation. The result indicated that the rate of collagen synthesis in the liver was decreased which was consistent with histological findings. Acyclic retinoid also decreased both AST and ALT activities in serum, demonstrating the reduction in hepatic parenchymal damage. This cytoprotective effect on parenchymal cells may be related, at least in part, to inhibition of hepatic fibrosis. No significant side effects were observed, despite a long-term administration of the acyclic retinoid. The present findings suggest the potential scope of therapy of hepatic fibrosis by retinoid.
authors.affiliation: Department of Laboratory Medicine, Gifu University School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Okuno
authors.forename: Y
authors.initials: Y
authors.lastname: Muto
authors.forename: H
authors.initials: H
authors.lastname: Moriwaki
authors.forename: M
authors.initials: M
authors.lastname: Kato
authors.forename: A
authors.initials: A
authors.lastname: Noma
authors.forename: O
authors.initials: O
authors.lastname: Tagaya
authors.forename: Y
authors.initials: Y
authors.lastname: Nozaki
authors.forename: Y
authors.initials: Y
authors.lastname: Suzuki
mesh_terms: D000410:Alanine Transaminase / Q000097:blood; D000818:Animals; D001219:Aspartate Aminotransferases / Q000097:blood; D002251:Carbon Tetrachloride; D003094:Collagen / Q000096:biosynthesis; D006909:Hydroxyproline / Q000378:metabolism; D008106:Liver Cirrhosis, Experimental / Q000139:chemically induced / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology; D008111:Liver Function Tests; D008297:Male; D011393:Procollagen-Proline Dioxygenase / Q000378:metabolism; D051381:Rats; D011919:Rats, Inbred Strains; D014212:Tretinoin / Q000031:analogs & derivatives* / Q000627:therapeutic use
chemical_list: D014212:Tretinoin; C034534:3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid; D003094:Collagen; D002251:Carbon Tetrachloride; D011393:Procollagen-Proline Dioxygenase; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D006909:Hydroxyproline