ArticleCerebral circulation - cognition and behavior2025
Electroacupuncture protects against cerebral ischemia-reperfusion injury via regulating P2×7R expression.
Article in Cerebral circulation - cognition and behavior, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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10 authors.
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Abstract
Background: Ischemic stroke is a serious clinical condition that is challenging to cure; therefore, slowing down the depletion of ATP is crucial to enhancing the tolerance of ischemic tissue through preconditioning. Electroacupuncture (EA) preconditioning induces tolerance to cerebral ischemia; however, the underlying mechanism remains unclear. Objective: The P2×7 receptor (P2×7R) mediates the stimulation of microglial cells and is involved in the development of cerebral ischemia-reperfusion (I/R) damage. We hypothesized that the protective effect of EA preconditioning is associated with the downregulation of P2×7R expression. Methods: We performed EA at the "Baihui" and "Fengfu" for 30 min before establishing a rat model of cerebral I/R induced based on the middle cerebral artery occlusion model (MCAO). MCAO rats were administered a ventricular injection of 2 '(3')-O-(4-benzoyl) adenosine triphosphate (BzATP), a P2×7R agonist, 30 min before EA. Neurologic scoring, infarction volume, and expression of cytokines, Bcl-2 and Bax, Iba1, P2×7R, p38, and phosphorylated p38 (p-p38) in ischemia penumbra were detected 24 h after cerebral I/R. Results: EA preconditioning ameliorated neurologic scoring, decreased infarction volume, and neuronal injury, and decreased cytokine release, while BzATP exacerbated cerebral I/R damage and inflammation events, unlike the favorable efficacy of EA. EA inhibited the expression of Iba-1, P2×7R, and p-p38/p38 in the ischemic penumbra, whereas BzATP reversed this effect. Conclusions: EA could induce cerebral tolerance to I/R damage by suppressing P2×7R expression and release of inflammatory factors.
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