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Relationship Between Plasma Growth Differentiation Factor 15 Levels and Complications of Type 2 Diabetes Mellitus: A
Xiaoyan Zhu1, Yue Zhang2, Fei Liang2
1School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; Suzhou Center for Disease Prevention and Control, Suzhou, Jiangsu, China.
Objective:
Our aim in this study was to identify the associations between growth differentiation factor 15 (GDF15) and type 2 diabetes mellitus (T2DM) complications in a community-based population in China.
Methods:
Based on a cross-sectional study registered in the National Basic Public Health Service for disease management of Changshu in China, a total of 1,689 T2DM patients were enrolled and tested further for plasma GDF15 levels. Macrovascular (cardiovascular disease and diabetic foot) and microvascular (diabetic kidney disease [DKD], diabetic retinopathy, and neuropathy) complications were evaluated. Logistic regression models were conducted to identify the associations of GDF15 with the risk of diabetes complications, and linear regression models were used to assess relationships between GDF15 and other clinical features.
Results:
Overall, 459 of the 1,689 T2DM patients (27.18%) had complications. GDF15 levels were significantly higher in patients with any type of complication compared with their counterparts. With each standard deviation increase of base 10 logarithms of GDF15 (lg-GDF15), the risk of overall complications increased by 1.17-fold (95% confidence interval [CI], 1.03 to 1.32). In contrast to macrovascular complications, associations of GDF15 with microvascular complications appeared to be stronger (adjusted odds ratio [OR], 1.24; 95% CI, 1.08 to 1.43), especially for DKD (adjusted OR, 1.51; 95% CI, 1.19 to 1.93). Subgroup analyses showed that the strength of association between GDF15 and complications varied by distinct age and T2DM duration subgroups. Patients with 2 or more types of complications had higher levels of GDF15 than those with fewer types of complications. Also, linear relationships were identified between GDF15 and several liver and kidney function indices.
Conclusion:
Higher GDF15 levels were associated with T2DM complications, especially DKD. GDF15 may serve as a biomarker for monitoring the deterioration of T2DM.
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