张华,王思静,邢科,徐亦男,马学宽,倪昀,王丽,安冬青

• 1:新疆医科大学

摘要(Abstract)：

目的观察新塔花水提物抗动脉粥样硬化(AS)的作用机制并对Toll样受体4(TLR4)/核转录因子-κb(NF-κb)信号通路及相关细胞因子的影响并探讨其机制。方法 40只8周龄ApoE小鼠随机分为模型组、阿托伐他汀组[3 mg/(kg·d),溶于0.5 mL蒸馏水]、新塔花水提物高剂量组[32 g/(kg·d)]、新塔花水提物低剂量组[9 g/(kg·d)],每组10只;同品系C57小鼠10只为空白组。所有小鼠给予高脂饲料普通环境饲养。适应性喂养1周后,实验组给予一定剂量药物灌胃,空白组和模型组给予等量蒸馏水灌胃,每周根据小鼠体质量变化调整灌胃剂量。12周后处死小鼠,采集血清及主动脉。胸主动脉用于苏木素伊红(HE)染色;血清用于酶联免疫双抗夹心(ELISA)法和血脂4项检测:三酰甘油(TAG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDLG)、高密度脂蛋白胆固醇(HDL-C);升主动脉用于免疫组织化学(IHC)法检测TLR4、NF-κb蛋白水平。结果血脂检测他汀组、高剂量组、低剂量组具有明显的降脂效果(P <0.01),高剂量组和低剂量组具有一定的降低胆固醇效果(P <0.05);ELISA见模型组细胞黏附因子(ICAM)比空白组明显升高(P <0.01),他汀组、高剂量组、低剂量组低于模型组(P <0.01);模型组基质金属蛋白酶-9(MMP-9)较空白组明显升高(P <0.01),他汀组、高剂量组、低剂量组低于模型组(P <0.01);免疫组化(IHC)结果模型组高于空白组免疫组化分析模型组TLR4、NF-κb表达水平均高于空白组(P <0.01),他汀组、高剂量组和低剂量组TLR4、NF-κb表达水平均低于模型组(P <0.01)。结论新塔花具有预防AS的作用,其机制可能与调控TLR4/NF-κb信号通路有关。

关键词(KeyWords)： 动脉粥样硬化;新塔花;TLR4;NF-κb;ApoE-/-;小鼠

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学地区基金项目(81360528)

作者(Author): 张华,王思静,邢科,徐亦男,马学宽,倪昀,王丽,安冬青

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