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J Cereb Blood Flow Metab. 2007 Mar;27(3):452-9. Epub 2006 Jun 14.

Improved reperfusion and neuroprotection by creatine in a mouse model of stroke.

Author information

1
Department of Experimental Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany.

Erratum in

  • J Cereb Blood Flow Metab. 2007 Jun;27(6):1290.

Abstract

Stroke leads to energy failure and subsequent neuronal cell loss. Creatine and phosphocreatine constitute a cellular energy buffering and transport system, and dietary creatine supplementation was shown to protect neurons in several models of neurodegeneration. Although creatine has recently been found to reduce infarct size after cerebral ischemia in mice, the mechanisms of neuroprotection remained unclear. We provide evidence for augmented cerebral blood flow (CBF) after stroke in creatine-treated mice using a magnetic resonance imaging (MRI)-based technique of CBF measurement (flow-sensitive alternating inversion recovery-MRI). Moreover, improved vasodilatory responses were detected in isolated middle cerebral arteries obtained from creatine-treated animals. After 3 weeks of dietary creatine supplementation, minor changes in brain creatine, phosphocreatine, adenosine triphosphate, adenosine diphosphate and adenosine monophosphate levels were detected, which did not reach statistical significance. However, we found a 40% reduction in infarct volume after transient focal cerebral ischemia. Our data suggest that creatine-mediated neuroprotection can occur independent of changes in the bioenergetic status of brain tissue, but may involve improved cerebrovascular function.

PMID:
16773141
DOI:
10.1038/sj.jcbfm.9600351
[Indexed for MEDLINE]

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