Neuroprotective actions of a histidine analogue in models of ischemic stroke
Journal
Journal of Neurochemistry
Journal Volume
101
Journal Issue
3
Pages
729-736
Date Issued
2007
Author(s)
Arumugam T.V.
Cutler R.G.
Jo D.-G.
Magnus T.
Chan S.L.
Mughal M.R.
Telljohann R.S.
Nassar M.
Ouyang X.
Calderan A.
Ruzza P.
Guiotto A.
Mattson M.P.
Abstract
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.
SDGs
Type
journal article