杜仲乙醇提取物对脑老化模型小鼠血中氧化应激指标的影响

目的：探讨杜仲对脑老化模型小鼠血中氧化应激指标的影响。方法皮下注射D-半乳糖建立小鼠老龄化模型，杜仲乙醇提取物灌胃给药。采用流式细胞仪测定不同组小鼠脑细胞凋亡率，采用ELISA试剂盒测定一系列氧化指标，包括丙二醛（MDA）、超氧化物歧化酶（SOD）、蛋白质羰基含量（PCO）和一氧化氮（NO）含量。结果流式细胞仪测定结果显示，与模型组相比，杜仲提取物组小鼠脑细胞凋亡率明显下降（P＜0.01）。ELISA测定结果表明，与正常组相比，杜仲组小鼠血中NO和SOD水平显著升高（P＜0.01）。与模型组相比，杜仲组小鼠血中MDA和PCO水平显著降低（P＜0.01），而SOD水平显著升高（P＜0.01）。结论杜仲提取物可能通过有效减轻氧化损伤而发挥其抗脑老化作用。

Effect of alcohol extract of Cortex Eucommiae on oxidative stress markers in serum of brain aging model mice

Objective To explore the effect of Cortex Eucommiae(CE)extract on oxidative stress markers of brain aging mice. Methods Brain aging mice model was made via subcutaneously administered D-galactose. The ethanol extract of CE was intra?gastrically administered to the model mice. Apoptosis ratio of brain cells of mice was determined by a flow cytometry to evaluate the an?ti-aging function of CE extract. A series of biomarkers related to oxidation,including malonyldialdehyde(MDA),superoxide dis?mutase(SOD),protein carbonyl(PCO),and nitric oxide(NO)in serum of mice were determined by ELISA. Results Compared with the model mice,the apoptosis ratio of brain cells in the CE extract group decreased significantly(P<0.01). ELISA test results showed that,compared with the normal group,NO and SOD levels in serum of CE extract group were significantly higher(P<0.01). Compared with the model group,MDA and PCO levels in serum of CE extract group were significantly lower(P<0.01),and SOD level was obviously higher(P<0.01). Conclusion The CE extract might play the role of brain anti-aging by the effective attenuation of ox?idative damage.