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巨细胞病毒感染及TLR4信号通路与老年T2DM患者血管病变的关系

Relationship between cytomegalovirus infection and TLR4 signaling pathway and vascular disease in elderly patients with T2DM
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摘要 目的探讨Toll样受体(TLR)4信号通路和巨细胞病毒(HCMV)感染与老年2型糖尿病(T2DM)患者血管病变的关系。方法选取T2DM患者65例,根据是否发生动脉粥样硬化(AS)分为T2DM-AS组(n=28)和T2DM-无AS组(n=37),同时选取同期于医院接受体检的健康者42例作为对照组,采用酶联免疫吸附试验(ELISA)测定各组血清HCMV抗体IgM和IgG及肿瘤坏死因子(TNF)-α水平,同时应用实时定量聚合酶链反应(RT-PCR)检测各组单核细胞TLR4 mRNA和锌指蛋白(A20)mRNA的变化,并使用多因素Logistic分析老年T2DM患者AS发生的危险因素。结果各组性别、冠心病史、脑梗死史及糖尿病慢性肾脏疾病史比较均无统计学差异(P>0.05),T2DM-AS组年龄、病程及高血压例数显著高于T2DM-无AS组(P<0.05);T2DM-AS组、T2DM-无AS组与对照组HCMV-IgG抗体阳性率比较差异无统计学意义(P>0.05),T2DM-AS组HCMV-IgM抗体阳性率显著高于T2DM-无AS组(P<0.05),T2DM-无AS组HCMV-IgM抗体阳性率显著高于对照组(P<0.05);TLR4 mRNA和A20 mRNA在两组老年T2DM患者中的表达明显高于对照组(P<0.05),而T2DM-AS组表达又显著高于T2DM-无AS组(P<0.05);与对照组相比,两组老年T2DM患者TNF-α水平均显著升高(P<0.05),T2DM-AS组TNF-α水平又显著高于T2DM-无AS组(P<0.05);两组FBG、SBP、DBP及LDL-C差异显著(P<0.05);年龄、病程、HCMV-IgM、TLR4 mRNA、A20 mRNA、TNF-α、FBG及SBP均是老年T2DM患者AS的独立危险因素(VIF<3,P<0.05)。结论在合并AS的老年T2DM患者体内更易发生HCMV感染,认为AS病变过程可能与HCMV活动性感染具有一定的关系;单核细胞TLR4/NF-κB信号通路参与T2DM的炎症反应,其可能是促进老年T2DM患者AS的原因。
作者 王韧舟 马琳娜 蒋毅 WANG Ren-Zhou;MA Lin-Na;JIANG Yi
出处 《中国老年学杂志》 CAS 北大核心 2023年第10期2335-2338,共4页 Chinese Journal of Gerontology
基金 苏州市科技计划项目(SYS2019013)。
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