Abstract

Increased plasma activity of plasminogen activator inhibitor 1 (PAI-1) is considered as a risk factor for thrombosis associated with atherosclerosis by reduction of fibrinolysis. Since nephropathic patients with non-insulin-dependent diabetes mellitus (NIDDM) are a cardiovascular high-risk group, which has yielded only controversial results as to the regulation of PAI-1, we compared 19 overt nephropathic NIDDM patients (mean age 63 years, serum creatinine 1.9 mg/dl, proteinuria 4.2 g/day) to 17 nondiabetic nephropathic patients with various causes of renal insufficiency (mean age 63 years, serum creatinine 2.8 mg/dl, proteinuria 3.9 g/day). We found normal PAI-1 levels for patients with diabetic nephropathy and significantly elevated PAI-1 levels within the upper normal range for nondiabetic nephropathic patients. Common risk factors in both groups were very high levels of fibrinogen, lipoprotein(a), serum cholesterol, and LDL cholesterol.

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