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Objective: Vascular complications in type 2 diabetes mellitus are an important cause of morbidity and mortality. Also, endothelial dysfunction arises with vascular ageing during the postmenopausal period. Our objective in this study was to evaluate inflammation and endothelial function parameters and their possible diagnostic roles in type 2 diabetic postmenopausal patients.
Material and Methods: The study was conducted on four groups, including type 2 diabetic premenopausal (n:20), non-diabetic premenopausal (n:20), type 2 diabetic postmenopausal (n:20), and non-diabetic postmenopausal subjects (n:20). Serum endothelin-1 (ET-1), endothelial nitric oxide synthetase (eNOS), interleukin-6 (IL-6), tumor necrosis factor α (TNF-α), and chitinase-3-like protein 1 (YKL-40) levels were determined as inflammatory and endothelial function markers using ELISA kits.
Results: Serum ET-1, IL-6, and YKL-40 levels were higher in the type 2 diabetic postmenopausal group compared to the non-diabetic premenopausal group (p<0.01, p<0.05, and p<0.01, respectively). ET-1, IL-6, and YKL-40 levels were higher in the type 2 diabetic postmenopausal group compared to the non-diabetic postmenopausal group (p<0.001, p<0.05, and p<0.01 respectively). ROC analysis revealed serum ET-1 (AUC 0.933, sensitivity 87.5%, specificity 85.7%), IL-6 (AUC 0.812, sensitivity 56.3%, specificity 92.8%), and YKL-40 (AUC 0.880, sensitivity 81.2%, specificity 92.8%), as good diagnostic parameters, especially in the type 2 diabetic premenopausal vs. non-diabetic premenopausal cohorts.
Conclusion: Serum ET-1, IL-6, and YKL-40 levels were at the highest levels in the 2 diabetic postmenopausal group, and the increase in these markers was remarkable in diabetes compared with menopausal periods. Also, ET-1, IL-6, and YKL-40 were good diagnostic parameters for detecting endothelial function and inflammation in type 2 diabetic postmenopausal and non-diabetic premenopausal cohorts.
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