• H Takahashi, A Tsuda, W Tatewaki, K Wada, H Niwano, and A Shibata.
• First Department of Internal Medicine, Niigata University School of Medicine, Japan.
• Thromb. Res. 1989 Sep 15;55(6):727-35.

AbstractDiabetes mellitus (DM) is associated with an increased incidence of vascular complications. Abnormalities in the hemostatic system contribute at least in part to the development of vascular disease or atherosclerosis. In order to assess the actual degree of activation of the coagulation and fibrinolytic systems in diabetics, plasma levels of thrombin-antithrombin III complex (TAT) and plasmin-alpha 2-plasmin inhibitor complex (PAP) were measured together with tissue-type plasminogen activator (t-PA) and plasminogen activator inhibitor (PAI-1) in 18 patients with DM (three patients with type I DM and 15 with type II DM). Mean plasma levels of TAT (2.5 +/- SD 1.2 ng/mL) and PAP (0.9 +/- 1.2 micrograms/mL) were significantly elevated in diabetics as compared with healthy subjects (1.7 +/- 0.3 ng TAT and 0.2 +/- 0.1 micrograms PAP per mL of plasma; p = 0.009 and 0.02, respectively). Plasma antigen concentration of t-PA but not of PAI-1 was also elevated. No difference was found in the levels of these variables between type I and type II diabetics or between patients with and without retinopathy or nephropathy. These findings indicate that continuous activation of coagulation and fibrinolysis actually occurs in the majority of the patients with DM.

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