Several studies suggested that lipoprotein (a)-Lp(a) is an independent atherogenic risk factor. Since non-insulin-dependent diabetes mellitus (NIDDM) is characterized by an increased risk of coronary heart disease (CHD) as related to the general population, the main purpose of our study was to compare the plasma levels of apolipoprotein (a)-(apo) (a) in 30 NIDDM patients hospitalized in our department, and in 20 non-diabetic controls from Timişoara. Apo (a) values were similar in the two groups (medians, 95% confidence intervals 57 (50-107) in NIDDM versus 58 (51-106) U/l in controls; p = 0.9097). We found weak correlations between apo (a) and hemoglobin A1 (HbA1) (r = 0.42). A significant association was noticed between apo (a) and apo B, both in NIDDM (r = 0.71) and in control subjects (r = 0.81) p < < 0.001. The diabetic patients were screened for microalbuminaria with the MICRAL-test and we compared apo (a) levels in those having albumin excretion values above and under the cut-off point (20 mg/l). Apo (a) concentrations were similar in both samples. We found no association between apo (a) and plasma lipid values. NIDDM patients on fair glycemic control have similar apo (a) concentrations to non-diabetic subjects and they do not seem to be influenced by diabetes duration, HbA1, microalbuminuria and plasma lipid values Apo (a) and apo B are significantly correlated, both in diabetic and non-diabetic subjects.
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