强肌健力方对脾肾两虚证大鼠胸腺增殖细胞核抗原表达的影响

目的观察强肌健力方对脾肾两虚证大鼠胸腺组织的作用及机理。方法将72只SD大鼠随机分为5组,即正常对照组(10只),模型组(16只),强肌健力方组(15只),黄芪减量方组(15只),单味黄芪组(16只)。采用灌服大黄复制脾虚模型(14天),在脾虚基础上采用肌肉注射氢化可的松复制肾虚模型(10天)。造模同时分别给予蒸馏水、强肌健力方、黄芪减量方、单味黄芪灌胃,连续给药24d后,取胸腺组织行HE染色,光学显微镜下观察各组大鼠胸腺组织形态学的变化,用免疫组化的方法测定增殖细胞核抗原(PCNA)表达。结果模型组体质量比正常对照组显著减轻(P<0.01),而各用药组均可使大鼠体质量升高(P<0.05或P<0.01);模型组大鼠胸腺组织有不同程度损伤,而强肌健力方组、单味黄芪组能使已遭损伤的胸腺组织得以修复;与正常对照组比较,模型组胸腺组织PCNA蛋白表达减少,阳性面积率显著降低(P<0.01);而强肌健力方能使胸腺组织PCNA表达升高(P<0.05)。结论强肌健力方能有效促进脾肾两虚证大鼠胸腺组织细胞增殖,并对受损的胸腺组织具有保护作用,其健脾益气的作用机理与升高PCNA表达有关。

Effect of Qiangji Jianli Formula on the Expression of Proliferating Cell Nuclear Antigenin of Thymus in Spleen-Kidney Deficiency Syndrome Model Rats

Objective To observe the effect and mechanism of Qiangji Jianli Formula(Herbal formula for strengthening muscles and bones)on the thymus of rat models with spleen-kidney deficiency syndrome.Methods Seventy-two SD rats were randomized into the following five groups:the normal control group(n=10),model group(n=16),Qiangji Jianli Formula group(n=15),Qiangji Jianli Formula with the Huangqi(Radix Astragali seu Hedysari)dosage reduced group(n=15),and Huangqi(Radix Astragali seu Hedysari)group(n=16).The spleen def...