[Plasma expanders and kidney function].
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Biomedical subjects
Publications and source records attributed to H Brass.
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Between 1988 and 1992, 565 type 2 diabetic patients were examined for nephropathy and diabetes-associated diseases during hospital treatment. Stages of nephropathy were defined as no clinical sign of nephropathy (N = 280), microalbuminuria (N = 38), overt proteinuria (N = 105), impaired renal function (N = 55), and chronic dialysis therapy (N = 87). In dialyzed patients, HbA1c averaged 6.8%, and, in the other groups, HbA1c was between 7.6% and 8.3% (normal range, 3.8%-6.1%). Cataract was not associated with the severity of nephropathy. Stroke was most common in the stage of renal insufficiency (34%). The following complications, as found in medical history or as current event, showed a significant association with the stage of nephropathy and occurred most frequently in dialysis patients (percentage is displayed for patients with nephropathy in comparison to diabetic dialysis patients): hypertension (53%-89%), left ventricular hypertrophy (39%-81%), myocardial infarction (14%-36%), peripheral vascular disease (27%-77%), foot lesions (7%-75%), minor or major amputations (3%-23%), proliferative retinopathy (6%-46%), blindness (2.9%-16.1%), and internal carotid artery stenosis (15%-36%). In this preselected cohort of diabetic patients, a high morbidity was found already without nephropathy that increased several-fold in the course of the development of nephropathy. Our data identify patients with diabetic nephropathy as a high-risk group for excess morbidity.
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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