Nonenzymatic glycation of apolipoprotein B in the low-density lipoprotein (LDL) complex has been considered a proatherogenic modification contributory to the increased susceptibility of patients with diabetes to atherosclerosis. We postulated that glycated LDL concentrations might be associated with other markers of cardiovascular disease. To explore this hypothesis, we measured glycated LDL concentrations by a monospecific immunoassay in 50 patients with type 1 and 100 patients with type 2 diabetes and examined relationships with the amount of albumin excretion and the serum cholesterol and triglyercide concentrations. Plasma glycated LDL showed a significant positive correlation (r = 0.325; P < 0.001) with urinary albumin excretion that was higher in type 1 (r = 0.463) than in type 2 (r = 0.245) patients. The mean glycated LDL concentration progressively increased with increasing albumin excretion when patients were subcategorized into groups of normoalbuminuria, low (
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