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Breviscapine Alleviates Cognitive Impairments Induced by Transient Cerebral Ischemia/Reperfusion through Its Anti-Inflammatory and Anti-Oxidant Properties in a Rat Model.

Cerebral ischemia/reperfusion (I/R)-induced injury is a common phenomenon of stroke, and the effective treatment for I/R-induced brain tissue damage is limited. Breviscapine has been widely used in China as herbal medicine to treat cardiovascular diseases for hundreds of years and has been demonstrated to possess potent cardiovascular pharmacological effects. This study aims to investigate the neuroprotective effect of breviscapine on cerebral I/R-induced injury. The rat model of middle cerebral artery occlusion (MCAO) was applied in our study. The cerebral I/R rats received multiple injections of breviscapine. All rats were subject to neurological behavior tests by open field test and Morris water maze test. The pro-inflammatory cytokines and oxidative stress marker levels were determined by ELISA and colorimetric analysis, respectively. We demonstrated that administration of breviscapine dose-dependently ameliorated cerebral I/R-induced injury and improved the neurological performance of cerebral I/R rats. Further studies illustrated that breviscapine treatment effectively attenuated inflammatory cytokine expression, reduced oxidative stress, and pro-apoptosis protein expression and inhibited the activation of NF-κB signaling and microglia in the I/R injury tissues. Breviscapine may serve as a single drug or a promising adjuvant that can be used in conjunction with other medicine for the treatment of cerebral I/R-induced injury.