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  • Title: Amelioration of liver fibrogenesis by dual inhibition of PDGF and TGF-beta with a combination of imatinib mesylate and ACE inhibitor in rats.
    Author: Yoshiji H, Kuriyama S, Noguchi R, Ikenaka Y, Yoshii J, Yanase K, Namisaki T, Kitade M, Yamazaki M, Asada K, Akahane T, Tsujimoto T, Uemura M, Fukui H.
    Journal: Int J Mol Med; 2006 May; 17(5):899-904. PubMed ID: 16596278.
    Abstract:
    Both platelet-derived growth factor (PDGF) and transforming growth factor-beta (TGF-beta) are known to be pivotal cytokines in liver fibrosis development. The aim of our current study was to elucidate the effects of dual inhibition of PDGF and TGF-beta by combination of the clinically used imatinib mesylate (STI-571) and perindopril (an ACE-inhibitor; ACE-I), respectively, on ongoing liver fibrosis development in rats. The effects of STI-571 and ACE-I at clinically comparable low doses were examined in a rat model of CCl4-induced liver fibrogenesis. Treatment with both STI-571 and ACE-I inhibited liver fibrogenesis and suppressed activation of hepatic stellate cells (HSCs). Administration of both agents exerted a more potent inhibitory effect than administration of either single agent. Our in vitro study demonstrated that STI-571 and ACE-I suppressed PDGF receptor (PDGFR) phosphorylation and TGF-beta expression in activated HSCs, respectively. Dual suppression of PDGF and TGF-beta with a combination of clinically comparable low doses of STI-571 and ACE-I exerted a significant inhibitory effect on ongoing liver fibrosis development. Since both agents are widely used in clinical practice, this combination therapy may provide a new strategy against liver fibrosis in the future.
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