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白藜芦醇对大鼠腰椎间盘退变的影响

, PP. 1150-1152

Keywords: 腰椎间盘,退变,基质金属蛋白酶,白藜芦醇,大鼠

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Abstract:

目的探讨白藜芦醇(RES)对大鼠退变腰椎间盘病理组织学改变及基质金属蛋白酶-9(MMP-9)表达的影响。方法雄性SD大鼠36只,随机分为正常对照组、椎间盘退变组和白藜芦醇药物干预组,每组12只,手术方法制作大鼠腰椎间盘退变模型。白藜芦醇药物干预组在造模后4周,将RES超细粉末制成20mg?mL-1的溶液,按50mg?kg-1,每天1次腹腔注射,持续2周。正常对照组和椎间盘退变组给予腹腔注射生理盐水,三组大鼠在造模后8周取腰椎间盘组织,HE染色观察各组椎间盘病理组织学改变;免疫组织化学法观察MMP-9的表达。结果HE染色显示白藜芦醇药物干预组可见不同程度的髓核的脊索细胞及软骨样细胞减少,周围基质和水分亦较少,但比椎间盘退变组退变程度轻。免疫组织化学染色结果MMP-9阳性染色的灰度值分析显示白藜芦醇药物干预组阳性染色弱于椎间盘退变组(P0.05)。结论白藜芦醇具有减轻实验性腰椎间盘组织退变的作用,抑制MMP-9的表达可能是其作用机制之一。

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