N1 -Nonyl-1,4-diaminobutane ameliorates brain infarction size in photochemically induced thrombosis model mice

Neuroscience Letters
Takashi MasukoYoshiaki Sugita

Abstract

Inhibitors for polyamine oxidizing enzymes, spermine oxidase (SMOX) and N1-acetylpolyamine oxidase (PAOX), were designed and evaluated for their effectiveness in a photochemically induced thrombosis (PIT) mouse model. N1-Nonyl-1,4-diaminobutane (C9-4) and N1-tridecyl-1,4-diaminobutane (C13-4) competitively inhibited the activity of PAOX and SMOX in a manner comparable to N1,N4-bis(2,3-butadienyl)-1,4-butanediamine (MDL72527), an irreversible inhibitor of both enzymes. The two compounds were then tested for their effects in the PIT model. Both intraperitoneal (i.p.) and intracerebroventricular (i.c.v.) administration of C9-4 decreased infarct volumes significantly. By contrast, C13-4 reduced the volume of brain infarction by i.c.v. administration, but no reduction was observed after i.p. administration. C9-4 administered by i.p. injection reduced the volume of brain infarction significantly at doses of more than 3 mg/kg, and the dosage of 5 mg/kg or 10 mg/kg demonstrated the most potent effect and were more effective than equivalent doses of the other inhibitors such as MDL72527 and N-benzylhydroxylamine. I.P. injection of 5 mg/kg of C9-4 provided a therapeutic time window of longer than 12 h. This report demonstrates that C9-4 ...Continue Reading

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Oct 20, 2018·The Journal of Biological Chemistry·Tracy Murray StewartRobert A Casero
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