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Neuroprotective actions of a histidine analogue in models of ischemic stroke
Author(s) -
Tang SungChun,
Arumugam Thiruma V.,
Cutler Roy G.,
Jo DongGyu,
Magnus Tim,
Chan Sic L.,
Mughal Mohamed R.,
Telljohann Richard S.,
Nassar Matthew,
Ouyang Xin,
Calderan Andrea,
Ruzza Paolo,
Guiotto Andrea,
Mattson Mark P.
Publication year - 2007
Publication title -
journal of neurochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.75
H-Index - 229
eISSN - 1471-4159
pISSN - 0022-3042
DOI - 10.1111/j.1471-4159.2006.04412.x
Subject(s) - neuroprotection , histidine , carnosine , pharmacology , lipid peroxidation , hypoxia (environmental) , chemistry , stroke (engine) , biochemistry , antioxidant , medicine , amino acid , oxygen , mechanical engineering , organic chemistry , engineering
Histidine is a naturally occurring amino acid with antioxidant properties, which is present in low amounts in tissues throughout the body. We recently synthesized and characterized histidine analogues related to the natural dipeptide carnosine, which selectively scavenge the toxic lipid peroxidation product 4‐hydroxynonenal (HNE). We now report that the histidine analogue histidyl hydrazide is effective in reducing brain damage and improving functional outcome in a mouse model of focal ischemic stroke when administered intravenously at a dose of 20 mg/kg, either 30 min before or 60 min and 3 h after the onset of middle cerebral artery occlusion. The histidine analogue also protected cultured rat primary neurons against death induced by HNE, chemical hypoxia, glucose deprivation, and combined oxygen and glucose deprivation. The histidine analogue prevented neuronal apoptosis as indicated by decreased production of cleaved caspase‐3 protein. These findings suggest a therapeutic potential for HNE‐scavenging histidine analogues in the treatment of stroke and related neurodegenerative conditions.