Protective Effect and Mechanism of Sodium Ferulate on Cerebral Ischemia-reperfusion Inflammatory Injury in Rats / 中国实验方剂学杂志

ABSTRACT

Objective: To investigate the protective effect of sodium ferulate on cerebral ischemia-reperfusion injury in rats and to explore its possible mechanism.Method: The cerebral ischemia reperfusion injury model was established by middle cerebral artery occlusion (MCAO) in SD male rats. 36 modeled rats with neurologic damage were randomly divided into 4 groupsmodel group, low,medium,high-dose sodium ferulate groups (25,50,100 mg·kg-1).Another nine rats were selected as a sham operation group.Neurological function was assessed by neurological scoring system in rats.Hematoxylin-eosin (HE) staining was performed to observe the pathological changes of the rats' brain. The levels of tumor necrosis factor α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6) in serum and brain tissues were detected by enzyme-linked immunosorbent assay (ELISA). Western blot was used to detect the protein expression of nucleus and cytoplasm nuclear factor-kappa B p65 (NF-κB p65) in brain tissues.Result: As compared with normal group, neurological deficit score was increased; the neuronal necrosis and inflammatory cell number were present;the serum and brain tissue levels of TNF-α, IL-1β and IL-6 were increased; nucleus/cytoplasm NF-κB p65 protein expression ratio was increased significantly in model group (PPPα, IL-1β and IL-6(PPκB p65 protein(PPConclusion: Sodium ferulate protects the brain against focal cerebral ischemia reperfusion injury, and the mechanism may be related to inhibiting nuclear translocation of NF-κB p65 protein to alleviate inflammatory response.