Objective: To study the vascular endothelial function and the level of inflammation factors in the first degree relatives (FDR) of type 2 diabetes (T2DM) patients with normal glucose tolerance and related factors.
Methods: Vascular endothelial function, plasma plasminogen activator inhibitor-1 (PAI-1), vascular cell adhesion molecule-1 (VCAM-1) and insulin active index (IAI) were measured in 57 FDR and 31 controls.
Results: As compared with the controls, there were less endothelium-dependent vasodilation [(12.45 +/- 3.37)% vs (5.03 +/- 0.34)%] and IAI [(-3.79 +/- 0.57) vs (-4.11 +/- 0.46)], higher PAI-1 [(30.46 +/- 12.28) microg/L vs (39.25 +/- 6.54) microg/L] and higher VCAM-1 [(637.31 +/- 107.32) microg/L vs (742.39 +/- 124.31) microg/L] in the FDR (P < 0.05).
Conclusion: There were decreased IAI, damaged endothelial function and impaired fibrinolysis in the first degree relatives of T2DM patients with normal glucose tolerance.
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