SAMP10鼠脑衰老相关基因HSP86、HSP84的表达及针刺影响的研究

目的：探讨针刺延缓衰老的作用机制。方法：采用快速老化小鼠SAMP10、SAMR1为模型，运用RT-PCR和地高辛标记的非放射性Northern blot技术，观察8月龄SAMR1对照组、SAMP10对照组、SAMP10针刺组及SAMP10非穴位刺激组全脑、皮层和海马HSP84、HSP86基因表达的变化。结果：SAMP10对照组小鼠热休克蛋白HSP84、HSP86在全脑、皮层、海马中的表达下调，针刺后表达上调并趋向于正常组。结论：SAMP10小鼠脑衰老与热休克蛋白HSP84、HSP86基因表达异常有关，针刺可以通过调节HSP84、HSP86基因表达增强细胞保护、抑制细胞凋亡、抵抗氧化应激，从而起到延缓衰老的作用。

Study on expression of brain aging-relative genes HSP86 and HSP84 and effects of acupuncture in the SAMP10 mouse

OBJECTIVE: To probe the mechanism of acupuncture for anti-aging. METHODS: In the senescence accelerated mouse the SAMP10 and the SAMR1, by using RT-PCR and DIG-labeled Northern blot technique, the expression differences of HSP84 and HSP86 genes in whole brain, cortex and hippocampus in the 4 groups,8-month SAMR1 control group, 8-month SAMP10 control group, 8-month SAMP10 acupuncture group and 8-month SAMP10 non-point acupuncture group were investigated. RESULTS: In the SAMP10 control group, the expression of HSP84 and HSP86 were down-regulated in the whole brain, the cortex and the hippocampus, and they were up-regulated after acupuncture, tending to the normal group. CONCLUSION: Brain aging of the SAMP10 mouse is related with abnormal expression of HSP84 and HSP86 genes, and acupuncture can strengthen the protection of cells, inhibit apoptosis and anti-oxidative stress through regulating expression of HSP84 and HSP86, hence anti-aging.