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The aim of the present study was to identify the effect of heme oxygenase (HO)-1 gene on cerebral ischemia-reperfusion injury. Sprague-Dawley rats were divided randomly into four groups: Sham group, vehicle group, empty adenovirus vector (Ad) group and recombinant HO-1 adenovirus (Ad-HO-1) transfection group. Rats in the vehicle, Ad and Ad-HO-1 groups were respectively injected with saline, Ad or Ad-HO-1 for 3 days prior to cerebral ischemia-reperfusion injury. Subsequently, the middle cerebral artery occlusion method was used to establish the model of cerebral ischemia-reperfusion injury. Following the assessment of neurological function, rats were sacrificed, and the infarction volume and apoptotic index in rat brains were measured. Furthermore, the protein expression levels of HO-1 in brain tissues were detected using western blot analysis. Results indicated that the neurological score of the Ad-HO-1 group was significantly increased compared with the Ad or vehicle groups, respectively (P&lt;0.001). The volume of cerebral infarction and the index score of neuronal apoptosis in the vehicle and Ad groups was significantly increased compared with the Ad-HO-1 group (P&lt;0.01). The death of neuronal cells following cerebral ischemia-reperfusion injury reduced remarkably induced by over-expression of HO-1. These findings suggest a neuroprotective role of HO-1 against brain injury induced by transient cerebral ischemia-reperfusion injury.

Upregulation of heme oxygenase‑1 protected against brain damage induced by transient cerebral ischemia‑reperfusion injury in rats