Abstract
There is a strong link between coronary artery disease (CAD), type 2 diabetes (T2D) on one hand, and altered fibrin clot properties, including increased clot density, and unfavorable fibrin clot structure on the other. T2D-related changes in fibrin clots can increase cardiovascular (CV) disease risk, including future CV events. We aimed to assess fibrin clot properties, thrombin generation, and platelet activation in CAD patients with prediabetes (PD) or T2D, compared to CAD patients without glycemic disorders. We allocated patients to three groups: 1) Those with angiographically established CAD but without glycemic abnormalities (CAD group); 2) individuals with PD and established CAD (CAD+PD group); and 3) patients with T2D and CAD (CAD+T2D group). We conducted comparisons across these groups for thrombin generation, fibrin clot permeability, fibrin clot lysis, and platelet activation. The final analysis included 116 eligible patients: 1) CAD group (n = 31); 2) CAD+PD (n = 42); and 3) CAD+T2D (n = 43). The CAD+T2D patients enrolled had well-controlled T2D (median HbA1c level of 5.90%; IQR: 5.7%-6.3%). We found no significant differences in thrombin generation, fibrin clot properties, or platelet activation markers across the three analyzed groups (all P-values >0.20). However, elevated interleukin-6 (IL-6) levels were noted in both the highest and lowest glucose concentration quartiles. Additionally, a substantial increase in endogenous thrombin potential (ETP) was observed in patients in the highest glycated hemoglobin quintile. Individuals with established CAD and concomitant PD or well-controlled T2D exhibited comparable fibrin clot phenotypes, thrombin generation potential, and platelet activation when compared to CAD patients without dysglycemia.
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