J Am Coll Cardiol:基因多态性所致血糖升高亦增加心血管风险

2012-06-19 张一宸译 医学论坛网

  空腹血糖升高是公认的缺血性心脏病(IHD)危险因素,而非空腹血糖与IHD之间的关系尚不明确。日前《美国心脏病学会杂志》(J Am Coll Cardiol)发表的一篇文章表明,与常规非空腹血糖一样,基因多态性导致的血糖升高也与IHD和心肌梗死(MI)风险增加相关。   研究共涉及来自哥本哈根及丹麦80522人的数据,采用孟德尔随机化方法进行分析,其中14155例

  空腹血糖升高是公认的缺血性心脏病(IHD)危险因素,而非空腹血糖与IHD之间的关系尚不明确。日前《美国心脏病学会杂志》(J Am Coll Cardiol)发表的一篇文章表明,与常规非空腹血糖一样,基因多态性导致的血糖升高也与IHD和心肌梗死(MI)风险增加相关。

  研究共涉及来自哥本哈根及丹麦80522人的数据,采用孟德尔随机化方法进行分析,其中14155例发生IHD,6257例发生IM。对发生IHD和IM的患者进行了GCK (rs4607517),G6PC2 (rs560887),ADCY5 (rs11708067),DGKB (rs2191349),and ADRA2A (rs10885122)基因变异进行检测,这些基因在全基因组的相关研究中证实与空腹血糖升高相关。

  结果表明,IHD和MI风险随非空腹血糖水平升高而升高。具体结果如下:经年龄、性别校正后,非空腹血糖11mmol/L(198 mg/dl)对<5 mmol/l (<90 mg/dl)IHD风险比为6.9(95%CI:4.2~11.2),经多因素校正后为2.3 (95% CI: 1.3~4.2),对应MI分别为9.2 (95% CI: 4.6~18.2)和4.8 (95% CI: 2.1~11.2)。升血糖等位基因数量增加与非空腹血糖水平、IHD风险及MI风险升高相关。

  经工具变量分析表明,基因型联合导致非空腹血糖每升高1 mmol/l (18 mg/dl),IHD和MI估算因果比值比分别为1.25(1.03~1.52)和1.69 (95% CI: 1.28~2.23)。Cox回归分析结果显示,IHD和MI的相应风险比分别为1.18 (95% CI: 1.15 t~1.22)和1.09 (95% CI: 1.07~1.11)。

      

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    2013-04-27 waiwai3030
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    2012-06-21 xzw120

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