Lipid profiles in patients with atherosclerotic renal artery stenosis.

BACKGROUND

Atherosclerotic renal artery stenosis (ARAS) is an important cause of renal disease in the elderly, and these patients have a high morbidity and mortality. There are no data on their blood lipid profiles.

METHODS

The lipoprotein profiles were examined in patients with proven ARAS and compared with patients matched for age, gender, renal function and presence of diabetes.

RESULTS

The profiles did not show any significant difference for apolipoprotein B (control 1.31 +/- 0.39 vs. ARAS 1.24 +/- 0.28; mean +/- SD), cholesterol (control 5.65 +/- 1.28 vs. ARAS 6.12 +/- 1.29), LDL cholesterol (control 3.72 +/- 1.03 vs. ARAS 4.06 +/- 1.18), fibrinogen (control 2.48 +/- 1.39 vs. ARAS 3.29 +/- 1.49), HDL cholesterol (control 1.16 +/- 0.38 vs. ARAS 1.00 +/- 0.26) and triglyceride (control 1.68 +/- 0.80 vs. ARAS 2.32 +/- 1.73) levels between the groups. Surprisingly lipoprotein(a) levels were higher in the control group (0.58 +/- 0.45) vs. ARAS (0.31 +/- 0.21). The most striking abnormality was the markedly lower apolipoprotein A1 levels in the ARAS group (control 2.09 +/- 0.55 vs. ARAS 0.95 +/- 0. 30) and apolipoprotein A1/B ratio (control 1.74 +/- 0.71 vs. ARAS 0. 78 +/- 0.24).

CONCLUSIONS

The lipoprotein abnormality in ARAS mirrors that in other severe vascular diseases. Potential therapeutic interventions in patients with ARAS should consider treatments to modify the apolipoprotein A1 concentration rather than cholesterol alone.