Prevention of Metabolic Disorders Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 24, Parvaneh Street, Velenjak, P.O. Box: 19395-4763, Tehran, Iran.
Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Science, Tehran, Iran.
Cardiovasc Diabetol. 2021 Jul 12;20(1):141. doi: 10.1186/s12933-021-01326-2.
To examine the impact of weight change on incident cardiovascular disease and coronary heart disease (CVD/CHD) among an Iranian population with type 2 diabetes mellitus (T2DM).
The study population included 763 participants with T2DM aged ≥ 30 years without a history of CVD and cancer at baseline. Two weight measurements done at baseline and about 3 years later. Based on their weight change, they categorized into: > 5% loss, 3-5% loss, stable (± < 3%), 3-5% gain, > 5% gain. Participants were then followed for incident CVD/CHD annually up to 20 March 2018. Multivariable Cox proportional hazard models, adjusted for age, sex, body mass index, educational level, current smoking, glucose-lowering drug use, family history of CVD, hypertension, hypercholesterolemia, chronic kidney disease, and fasting plasma glucose (FPG) were applied to estimate the hazard ratios (HRs) and 95% confidence intervals (CIs) of weight change categories for incident CVD/CHD, considering stable weight as reference.
After the weight change measurement, during a median follow-up of 14.4 years, 258 CVD and 214 CHD occurred. Over 5% weight gain was associated with reduced risks of CVD and CHD development by the HRs of 0.70 [95% CI 0.48-1.01; P-value: 0.058] and 0.61 [0.40-0.93], respectively, in multivariable analysis. After further adjustment for FPG change, the HRs of weight gain > 5% were attenuated to 0.75 [0.51-1.10; P-value: 0.138] and 0.66 [043-1.01; P-value: 0.053] for incident CVD and CHD, respectively. The effect of weight loss > 5% was in opposite direction among those older versus younger than 60 years; with suggestive increased risk (not statistically significant) of incident CHD/CVD for the older group. Moreover, weight gain > 5% significantly reduced the risk of CHD only among those older than 60 years (P-value for interaction < 0.2). Furthermore, weight gain > 5% had an association with lower risk of CVD and CHD among sulfonylurea users (0.56 [0.32-0.98] for CVD and 0.54 [0.29-0.99] for CHD).
Our results with a long-term follow-up showed that weight gain > 5% was associated with better CVD/CHD outcomes among Iranian participants with T2DM, especially older ones. Moreover, we did not find an unfavorable impact on incident CVD/CHD for sulfonylurea-induced weight gain.
研究体重变化对伊朗 2 型糖尿病(T2DM)患者发生心血管疾病(CVD/CHD)的影响。
本研究纳入了 763 名年龄≥30 岁、无 CVD 和癌症病史的 T2DM 患者。基线和大约 3 年后进行了两次体重测量。根据体重变化,将其分为:体重减轻>5%、体重减轻 3-5%、体重稳定(±<3%)、体重增加 3-5%、体重增加>5%。然后,对参与者进行每年一次的 CVD/CHD 事件随访,截至 2018 年 3 月 20 日。多变量 Cox 比例风险模型,根据年龄、性别、体重指数、教育水平、当前吸烟、降糖药物使用、CVD 家族史、高血压、高胆固醇血症、慢性肾脏病和空腹血糖(FPG)进行调整,用于估计体重变化类别的风险比(HRs)和 95%置信区间(CIs),以稳定体重为参考。
在体重变化测量后,中位随访 14.4 年后,发生了 258 例 CVD 和 214 例 CHD。多变量分析显示,体重增加>5%与 CVD 和 CHD 发展的风险降低相关,风险比(HRs)分别为 0.70(95%CI 0.48-1.01;P 值:0.058)和 0.61(0.40-0.93)。进一步调整 FPG 变化后,体重增加>5%的 HR 分别为 0.75(0.51-1.10;P 值:0.138)和 0.66(0.43-1.01;P 值:0.053),与 CVD 和 CHD 的发生风险相关。体重减轻>5%的效果在 60 岁以上和以下的人群中是相反的;对于年龄较大的人群,CHD/CVD 的发生风险有增加的趋势(但无统计学意义)。此外,体重增加>5%仅在年龄大于 60 岁的人群中与 CHD 风险降低显著相关(交互作用检验 P 值<0.2)。此外,体重增加>5%与磺脲类药物使用者的 CVD 和 CHD 风险降低相关(CVD 为 0.56[0.32-0.98],CHD 为 0.54[0.29-0.99])。
我们的长期随访结果表明,伊朗 2 型糖尿病患者体重增加>5%与更好的 CVD/CHD 结局相关,尤其是年龄较大的患者。此外,我们没有发现磺脲类药物引起的体重增加对 CVD/CHD 事件发生有不利影响。