检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:徐新颖[1] 秦丽华[2] 郭云良[1] 栾丽菊[2]
机构地区:[1]青岛大学医学院脑血管病研究所,青岛266021 [2]北京大学医学部解剖学系,北京100019
出 处:《解剖学报》2010年第5期693-697,共5页Acta Anatomica Sinica
基 金:国家自然科学基金资助项目(40976085)
摘 要:目的探讨海带多糖对高脂血症大鼠血脂的调节作用机制。方法健康雌性Wistar大鼠32只,应用高脂饲料喂养方法建立高脂血症动物模型,海带多糖干预治疗。血生化法检测大鼠血清甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白(LDL)、高密度脂蛋白(HDL)水平,硝酸还原酶法检测血清和肝组织一氧化氮(NO)含量,黄嘌呤氧化酶法测定血清和肝组织超氧化物歧化酶(SOD)活性,酶联免疫吸附法检测血清和肝组织中氧化低密度脂蛋白(ox-LDL)水平,免疫组织化学技术检测肝细胞SOD和诱导性一氧化氮合酶(iNOS)表达。结果海带多糖治疗后,大鼠血清TG、TC和LDL水平较模型组显著下降,而HDL显著升高(P<0.05)。肝组织匀浆ox-LDL和NO水平较模型组显著降低,而SOD活性显著升高。肝细胞iNOS表达较模型组显著降低,SOD表达显著增强(P<0.05)。结论海带多糖可通过抗氧化机制而发挥调节血脂水平的作用。Objective To investigate the regulating effects and mechanism of Laminaria japonica polysaccharide (LJPS) on lipid levels in serum of hyperlipenmia rats. Methods Thirty-two healthy female Wistar rats were used to establish hyperlipemia models by feeding fat-rich forage, and treated with LJPS as a potential drug. The serum levels of triglyceridc (TG), total cholesterol (TC), low-density lipoprotein (LDL) and high-density lipoprotein (HDL) were determined by biochemical assay. The nitric oxide (NO) level in serum and hepatic tissue was measured by nitrate reductase assay and the activity of superoxidc dismutase (SOD) in serum and hepatic tissue was detected by oxidase assay. The level of ox-LDL in hepatic tissue was determined by enzyme-linked immunosorbent assay. The expressions of SOD and inducible nitric oxide synthase (iNOS) in hepatocytes were detected by immunohistochemical assay. Results The rat serum levels of TG, TC and LDL were significantly higher while HDL was lower in the LJPS-treated group than those in the hyperlipidemia model group (P 〈 0. 05). Both the levels of ox-LDL and NO in both the rat serum and hepatocytic tissues were significantly lower and the activity of SOD was higher in the LJPS-treated group than those in the hyperlipidemia group (P 〈 0. 05). The experimental results showed that the iNOS down-expression and the SOD up-expression were found in the LJPS-treated group than those in the hyperlipidemia group ( P 〈 0. 05 ). Conclusion Laminaria japonica polysacharide might play a regulating effect on serum lipid levels by anti-oxide reaction.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.198