ARD:关节炎合并甲减使女性心血管风险增3倍

2012-03-23 MedSci MedSci原创

3月14日,《风湿病年鉴》(Annals of The Rheumatic Diseases)杂志上的一项研究表明,合并甲状腺功能减退症和炎性关节炎的女性罹患心血管疾病(CVD)的风险是对照者的近4倍。 长期以来人们推测甲状腺功能减退症与炎性关节炎可能存在关联,但证据不足。为考察这两种疾病的关联性及其对CVD风险的影响,阿姆斯特丹自由大学医学中心风湿科的Hennie G. Raterman博

3月14日,《风湿病年鉴》(Annals of The Rheumatic Diseases)杂志上的一项研究表明,合并甲状腺功能减退症和炎性关节炎的女性罹患心血管疾病(CVD)的风险是对照者的近4倍。

长期以来人们推测甲状腺功能减退症与炎性关节炎可能存在关联,但证据不足。为考察这两种疾病的关联性及其对CVD风险的影响,阿姆斯特丹自由大学医学中心风湿科的Hennie G. Raterman博士及其同事查阅并分析了荷兰全科医师信息网络(NINH)数据库175,000余例患者的情况。考虑到年轻患者CVD发病率较低,该研究排除了年龄<30岁的年轻患者。根据心肌梗死、短暂性缺血发作和卒中/脑血管意外等心血管疾病诊断代码计算发病率。

结果显示,共计1,518例 (0.9%)患者患有炎性关节炎(包括973例女性患者)。无论男性还是女性炎性关节炎患者,其甲状腺功能减退症发病率均明显高于对照者,男性:2.4% vs. 0.8%;女性:6.5% vs. 3.9%。炎性关节炎患者甲状腺功能减退症总发病率为5.01%,而对照者为2.39%(P<0.0005)。对女性患者(因合并两种疾病的男性患者病例太少,难以做出有意义的评估)CVD发病率进行分析发现,校正年龄、高血压糖尿病和高脂血症后,甲状腺功能减退症合并炎性关节炎的女性CVD比值比(OR)为3.72[95%置信区间(CI)为1.74~7.95];单纯炎性关节炎和甲状腺功能减退症患者的OR分别为1.48(95% CI,1.10~2.00)和1.19(95% CI,0.99~1.43)。上述结果为甲状腺功能减退症与炎性关节炎可能存在关联提供了新的证据,同时也强调了对这些患者进行心血管风险控制的必要性。

研究者认为,甲状腺功能减退症可能通过多种途径对心血管系统产生影响:提高氧化应激和降低内皮功能,减少NO产生并提高血小板活性,以及促进动脉粥样硬化形成。此外,甲状腺功能减退、炎性关节炎以及糖尿病等自身免疫性疾病易感因素蛋白酪氨酸磷酸酶N22功能多态性也加速动脉粥样硬化的形成。

研究者提醒,该研究在多个方面存在重要局限。因缺少患者生活方式、CVD家族史、社会经济状态以及种族背景等多个CVD危险因素资料,在分析时无法校正上述因素;既往研究显示类风湿关节炎二级护理患者甲状腺功能减退症发病率增加,但该研究没有排除频繁检查甲状腺疾病可能对观察结果的影响;炎性关节炎代码系统并不能区分类风湿关节炎、银屑病关节炎或僵直性脊柱炎等不同类型的关节炎疾病。鉴于此,上述研究结果尚需前瞻性研究加以证实

原始链接http://ard.bmj.com/content/early/2012/03/13/annrheumdis-2011-200836

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