Ginkgolide B Modulates BDNF Expression in Acute Ischemic Stroke

OBJECTIVE To investigate the neuroprotective effects of Ginkgolide B (GB) against ischemic stroke-induced injury in vivo and in vitro, and further explore the possible mechanisms concerned. METHODS Transient middle cerebral artery occlusion (tMCAO) mice and oxygen-glucose deprivation/reoxygenation (OGD/R)-treated N2a cells were used to explore the neuroprotective effects of GB. The expression of brain-derived neurotrophic factor (BDNF) was detected via Western blot and qRT-PCR. RESULTS GB treatment (4 mg/kg, i. p., bid) significantly reduced neurological deficits, water content, and cerebral infarct volume in tMCAO mice. GB also significantly increased Bcl-2/Bax ratio, reduced the expression of caspase-3, and protected against OGD/R-induced neuronal apoptosis. Meanwhile, GB caused the up-regulation of BDNF protein in vivo and in vitro. CONCLUSION Our data suggest that GB might protect the brain against ischemic insult partly via modulating BDNF expression.