Cardiovasc Diabetol:长期服用二甲双胍对糖尿病患者心肌肌钙蛋白水平的影响

2022-04-11 Nebula MedSci原创

2 型糖尿病患者的循环心肌肌钙蛋白水平长期升高,是心血管终点的一个既定预测因子和亚临床心肌损伤的预后标志物

二甲双胍对新发和慢性 2 型糖尿病患者的心血管结局均有良好影响。2 型糖尿病患者的循环心肌肌钙蛋白水平长期升高,是心血管终点的一个既定预测因子和亚临床心肌损伤的预后标志物。目前尚不清楚二甲双胍是否会影响心肌肌钙蛋白的水平。

本研究旨在通过对HOME试验进行事后分析,评估采用二甲双胍或安慰剂治疗的糖尿病患者的心肌肌钙蛋白 I 和 T 的变化。

HOME试验的是一项随机对照试验,纳入了390位慢性 2 型糖尿病患者,随机分成两组,予以二甲双胍(850 mg,3/日)或安慰剂,同时予以胰岛素治疗。在基线和第4、17、30、43和52个月时检测受试者的心肌肌钙蛋白 I 和 T 的水平。通过线性混合效应模型评估心肌肌钙蛋白轨迹,并根据年龄、性别、吸烟状况和心血管疾病史进行校正。

390位受试者中,有196位接受二甲双胍,194位接受安慰剂。二甲双胍组和安慰剂组的平均年龄分布是64岁和59岁,分布有50%和58%的受试者是女性。


两组肌钙蛋白水平的变化轨迹

虽然既往研究提示二甲双胍可降低该研究队列的大血管疾病风险,但本次分析的线性混合效应回归模型并未揭示对心肌肌钙蛋白 I 和 T 水平有影响的证据(-8.4%,p=0.150 和 -4.6%,p=0.242)。最后,研究人员发现,肌钙蛋白 T 具有统计学显著性的时间-治疗相关作用(-1.6%,p=-0.021),但肌钙蛋白 I 无此显著性(-1.5%,p=0.263)。


各时间节点检测的肌钙蛋白水平

 

该研究显示,与安慰剂相比,二甲双胍对心肌肌钙蛋白 I 和 T 水平没有临床相关影响。临床研究中观察到的药物的心脏保护作用并未通过这些亚临床心肌损伤生物标志物的减少反映出来。

 

原始出处:

Stultiens, J.M.G., Top, W.M.C., Kimenai, D.M. et al. Metformin and high-sensitivity cardiac troponin I and T trajectories in type 2 diabetes patients: a post-hoc analysis of a randomized controlled trial. Cardiovasc Diabetol 21, 49 (2022). https://doi.org/10.1186/s12933-022-01482-z.

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