Schisandrone improves learning and memory abilities of Alzheimer-like rats and influences expression of NF-κB, iNOS in rat hippocampus / 第二军医大学学报

ABSTRACT

Objective: To investigate the influence of Schisandrone on the learning and memory abilities of rats with Alzheimer-like disease and on the expression of NF-κB, iNOS in rat hippocampus, so as to study the prevention effect of Schisandrone on Alzheimer disease (AD). Methods: Totally 30 male SD rats were evenly randomized into 3 groups blank control group, AD model group and Schisandrone intervention group. The AD animal model was established by stereotactic injection of Aβ25-35 into lateral cerebral ventricle of rats; the rats in Schisandrone intervention group were administrated with Schisandrone. The learning and memory abilities of animals were determined by Morris water maze; the expression of NF-κB, iNOS in the hippocampus was detected by immunohistochemistry. Results: The learning and memory abilities of rats in the Schisandrone intervention group were significantly improved compared with those in the AD model group (P<0.05). The expression of NF-κB and iNOS in the hippocampus was significantly decreased in the Schisandrone group than in the AD model group(P<0.05). The expression of NF-κB and iNOS in the hippocampus was positively correlated with each other. The correlation coefficients for the blank control,AD model and Schisandrone intervention groups were 0.639,0.656 and 0.682, respectively(all P<0.05). Conclusion: Schisandrone can suppress the Aβ-induced oxidative stress and inflammatory reaction through influencing NF-κB signaling pathway, exerting its protective effect on AD.