In this study, in situ hybridization histochemistry technique was used to observe the effect of electro-acupuncture (EA) on glutamate transporter mRNA expression following focal cerebral ischemia. We observed that glutamate transporter mRNA expression decreased significantly in the area penumbra of cerebral cortex at 12h following focal cerebral ischemia. EA did not change glutamate transporter mRNA expression in normal rat brain but prevented the decrease of glutamate transporter mRNA expression in the area penumbra of cerebral cortex following focal cerebral ischemia. The results suggest that the protective effect of EA on ischemic neuronal death may bhe related to the increase of uptake of glutamate by its transporter.
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