黄芪多糖保护去卵巢大鼠成骨细胞功能活性的机制研究

被引:15
作者
翟鑫祥 [1 ]
董辉 [1 ]
王晶 [1 ]
王永祥 [2 ]
机构
[1] 扬州大学医学院骨科
[2] 苏北人民医院脊柱外科
关键词
骨质疏松,绝经后; 黄芪多糖; 成骨细胞; NF-E2相关因子2; 血红素加氧酶-1; 醌氧化还原酶1;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
100806 [中药药理学];
摘要
目的 探讨黄芪多糖对去卵巢大鼠成骨细胞功能活性和核因子E2相关因子(Nrf2)/血红素氧合酶-1(HO-1)/醌氧化还原酶1(NQO1)通路的影响。方法 双侧卵巢切除法构建骨质疏松大鼠模型并分为模型组、雌二醇(0.1 mg/kg)组、黄芪多糖组(20 mg/kg)、黄芪多糖(20 mg/kg)+全反式维甲酸(ARTA,7 mg/kg)组,另选健康大鼠作为假手术组(生理盐水灌胃),每组15只,干预8周。采用X线小动物骨密度仪检测大鼠胫骨骨密度、骨矿量,三点弯曲法测定生物力学性质;分离各组大鼠骨髓间充质干细胞(BMSCs)并诱导成骨细胞分化,MTT法检测成骨细胞活性,Bradford法检测碱性磷酸酶(ALP)活性,邻甲酚酞络合酮法测定钙沉积量,酶联免疫吸附试验检测骨成型蛋白2(BMP2)、骨钙素(BGP)、骨保护素(OPG)、超氧化物歧化酶(SOD)、丙二醛(MDA)水平,Western blot检测Nrf2、HO-1和NQO1表达。结果 与假手术组相比,模型组骨密度、骨矿量、最大载量、断裂能、成骨细胞活性、ALP活性、钙沉积量和BMP2、BGP、OPG、SOD、Nrf2、HO-1、NQO1水平降低,MDA水平升高(P<0.05);与模型组比较,雌二醇组、黄芪多糖组大鼠骨密度、骨矿量、最大载量、断裂能、成骨细胞活性、ALP活性、钙沉积量及BMP2、BGP、OPG、SOD、Nrf2、HO-1、NQO1水平均升高,MDA水平降低(P<0.05),而与黄芪多糖组比较,黄芪多糖+ARTA组大鼠上述指标变化趋势相反(P<0.05)。结论 黄芪多糖可改善去卵巢大鼠成骨细胞功能,机制可能与激活Nrf2/HO-1/NQO1通路有关。
引用
收藏
页码:265 / 269
页数:5
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