枳实黄酮提取物对6-羟基多巴胺所致PC12细胞损伤的保护作用

Protective Effect of Immature Bitter Orange (Citrus aurantium L.) Flavonoids Extracts on PC12 Cell Injury Induced by 6-Hydroxydopamine

通过6-羟基多巴胺(6-OHDA)诱导PC12细胞损伤模型,研究枳实黄酮提取物的神经保护作用。以不同浓度6-OHDA处理PC12细胞24 h以确定构建帕金森病模型的最适作用剂量,药物组加入6-OHDA和不同浓度枳实黄酮提取物共同孵育细胞24 h。以CCK8法检测细胞存活率,摸索枳实黄酮提取物的有效浓度,采用流式细胞术检测枳实黄酮提取物对6-OHDA损伤的PC12细胞活性氧(ROS)的影响,并以比色法检测其丙二醛(MDA)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和谷胱甘肽过氧化物酶(GSH-Px)水平。结果显示:与模型组比较,药物组细胞存活率显著升高(P<0.05),ROS含量和MDA水平显著降低,SOD、CAT和GSH-Px活性显著升高(P<0.05)。以上结果表明,枳实黄酮对6-OHDA诱导的PC12细胞氧化损伤有一定的保护作用。

To study the neuro protective effect of flavonoids extracts from immature bitter orange(Citrus aurantium L.),the PC12 cells treated with 6-hydroxydopamine(6-OHDA)were used as the Parkinson’s disease(PD)model.To determine the optimal dose of 6-OHDA for constructing a PD model,PC12 cells were incubated with different concentrations of 6-OHDA for 24 h.After 24 h incubation,PC12 cells of drug groups added 6-OHDA and different concentrations of flavonoids extracts were measured cell viability by CCK8 for selecting effective concentration of flavonoids extracts;the ROS level was determined using flow cytometry;the levels of MDA,CAT,SOD and GSH-Px were assayed by Colorimetric kit for oxidative stress investigation.Compared with the model group,PC12 cell viability was significantly enhanced(P<0.05),the levels of ROS and MDA were reduced significantly(P<0.05),and the activities of SOD,CAT and GSH-Px were significantly enhanced(P<0.05)in drug groups.In conclusion,immature bitter orange flavonoids extracts could protect PC12 cells against 6-OHDA-induced oxidative stress.