Jpn. J. Pharmacol. 75 (3), 291-294 (1997)

Protective Effect of T-686, an Inhibitor of Plasminogen Activator Inhibitor-1 Production, Against the Lethal Effect of Lipopolysaccharide in Mice

Jun Murakami, Akio Ohtani (*) and Sakae Murata

Lead Optimization Research Laboratory, Tanabe Seiyaku Co., Ltd., 2-2-50 Kawagishi, Toda, Saitama 335, Japan
(*) To whom correspondence should be addressed.

Abstract: We have examined the effects of an inhibitor of plasminogen activator inhibitor-1 (PAI-1) production, (3E,4E)-3-benzylidene-4-(3,4,5-trimethoxy-benzylidene)pyrrolidine-2,5-dione (T-686), on lipopolysaccharide (LPS)-induced death in mice. Oral administration of T-686 (10 and 100 mg/kg/day) for 8 days prior to the LPS injection (35 mg/kg, i.v.) protected mice from the lethal effect of LPS in a dose-dependent fashion. Moreover, treatment with 100 mg/kg T-686 attenuated the increase in plasma PAI-1 activity and the decrease in AT-III activity induced by LPS. We conclude that T-686 can reduce the mortality of mice induced by LPS, which seems to be partially correlated with both hypercoagulation and hypofibrinolysis.

Keywords: T-686, Lipopolysaccharide, Plasminogen activator inhibitor-1

Copyrightę The Japanese Pharmacological Society 1997

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