Neuroprotective effects of resveratrol on ischemic injury mediated by modulating the release of neurotransmitter and neuromodulator in rats.

Abstract

The present study was carried out to elucidate the neuroprotective effect and influence of resveratrol on the extracellular levels of neurotransmitter and neuromodulator during ischemia/reperfusion in rats. Male rats were divided into three groups: sham operation, ischemia treatment, and ischemia combined with resveratrol treatment (resveratrol-treated group, 30 mg/kg intraperitoneally for 7 days). Cerebral ischemia was induced by using the model of middle cerebral artery occlusion. The dialysates in hypothalamus were obtained by brain microdialysis technique. The levels of sixteen amino acids and amines in microdialysate were monitored by capillary electrophoresis analysis. This study shows that the ischemic infarcts were significantly reduced and neurological functions were improved in resveratrol-treated group compared to ischemia group. The analysis results demonstrate that chronic treatment with resveratrol remarkably reduced the release of excitatory neurotransmitter glutamate, aspartate and neuromodulator d-Serine during ischemia and reperfusion; and significantly increased the basal extracellular levels of inhibitory neurotransmitter gamma-amino-n-butyric acid, glycine and taurine. Chronic treatment with resveratrol also ameliorated O-phosphoethanolamine levels and excitotoxic index during ischemia and reperfusion. This study provides the first in vivo evidence that resveratrol could exert neuroprotective effect against ischemia injury by modulating the release of multiple neurotransmitters and neuromodulators during ischemia/reperfusion.

• Authors: Chao Li, Zhiying Yan, Jing Yang, Hao Chen, Hua Li, Yuanxue Jiang, Zexue Zhang
• Journal: Neurochemistry international (Neurochem Int) Vol. 56 Issue 3 Pg. 495-500 (Feb 2010) ISSN: 1872-9754 [Electronic] England
• PMID: 20026214 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright (c) 2009 Elsevier Ltd. All rights reserved.

Chemical References

• Antioxidants
• Ethanolamines
• Neuroprotective Agents
• Neurotransmitter Agents
• Stilbenes
• Glutamic Acid
• gamma-Aminobutyric Acid
• phosphorylethanolamine
• Resveratrol
• Glycine

Topics

• Animals
• Antioxidants (pharmacology, therapeutic use)
• Brain (drug effects, metabolism)
• Brain Infarction (drug therapy, physiopathology, prevention & control)
• Disease Models, Animal
• Ethanolamines (metabolism)
• Excitatory Postsynaptic Potentials (drug effects, physiology)
• Extracellular Fluid (drug effects, metabolism)
• Glutamic Acid (metabolism)
• Glycine (metabolism)
• Hypothalamus (drug effects, metabolism)
• Hypoxia-Ischemia, Brain (drug therapy, metabolism, physiopathology)
• Infarction, Middle Cerebral Artery (drug therapy, metabolism, physiopathology)
• Inhibitory Postsynaptic Potentials (drug effects, physiology)
• Male
• Neuroprotective Agents (pharmacology, therapeutic use)
• Neurotransmitter Agents (metabolism)
• Rats
• Rats, Sprague-Dawley
• Resveratrol
• Stilbenes (pharmacology, therapeutic use)
• Treatment Outcome
• gamma-Aminobutyric Acid (metabolism)