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达格列净对ApoE^(-/-)小鼠单核巨噬细胞系统及动脉粥样硬化的影响

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摘要 目的:研究达格列净对载脂蛋白E基因敲除(ApoE^(-/-))小鼠动脉粥样硬化(AS)斑块的影响,探讨其抗AS作用的可能机制。方法:16只8周龄雄性ApoE^(-/-)小鼠高脂饮食喂养8周形成AS模型后,随机分为对照组和实验组,每组8只,实验组予达格列净干预,对照组予同等剂量的生理盐水,两组干预4周后取材。油红O染色检测主动脉及主动脉瓣AS斑块面积比例;流式细胞术分析循环中单核细胞亚群的比例(Ly6G-CD11b+Ly6C hi和Ly6G-CD11b+Ly6C lo);免疫荧光染色和共聚焦显微镜成像检测斑块内的巨噬细胞和增殖的巨噬细胞(F4/80和Ki67双阳性细胞);酶联免疫吸附法(ELISA)检测血清中总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)的水平。结果:实验组与对照组比较有降低主动脉及主动脉瓣斑块负荷的作用,降低循环中Ly6C^(hi)单核细胞比例,降低斑块内增殖巨噬细胞比例,降低LDL-C水平,且具有升高HDL-C作用。结论:达格列净可减轻ApoE^(-/-)小鼠AS负荷的作用,可能与调节单核细胞亚群和血脂代谢相关。
出处 《中西医结合心脑血管病杂志》 2024年第3期470-474,共5页 Chinese Journal of Integrative Medicine on Cardio-Cerebrovascular Disease
基金 邯郸市科学技术研究与发展计划项目(No.21422083111)。
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