Background: Patients with atherosclerotic renovascular disease (ARVD) have a high risk of cardiovascular death. The primary aim was to characterize abnormalities in apolipoprotein (Apo)-defined lipoprotein (Lp) subclasses in patients with ARVD. Methods: Baseline measurements were performed on 42 patients with ARVD 4 weeks after renal angioplasty (PTRA). All patients were on statin treatment. Twenty age-matched healthy subjects without medications served as controls. Subsequently, patients were randomized to treatment with either candesartan (n = 21), or antihypertensive treatment without inhibitors of the renin-angiotensin-aldosterone system (n = 21) and followed for 11 months. Results: At baseline, ApoC-III (12.7 ± 4.6 vs. 8.8 ± 2.6 (SD) mg/dl, p < 0.05), LpB:C:E (13.3 ± 5.4 vs. 8.4 ± 4.3 mg/dl, p < 0.05), and the sum of ApoC-III-containing lipoproteins, i.e. LpB:C + LpB:C:E + LpA-II:B:C:D:E (46 ± 15 vs. 37 ± 8 mg/dl, p < 0.05), were significantly elevated in ARVD patients versus healthy controls. Multiple regression analyses showed that only plasma renin activity was independently associated with ApoC-III levels at baseline (p < 0.05, r = 0.74). Treatment with candesartan did not correct abnormalities. Conclusions: Patients with ARVD treated with statins have an atherogenic lipoprotein profile characterized by elevated levels of ApoC-III-containing, triglyceride-rich lipoproteins that could accelerate atherosclerotic disease.

Keywords:
Apolipoprotein C-III, Atherosclerosis, Chronic kidney disease, Dyslipidemia, Renal artery stenosis, Renovascular disease
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© 2011 S. Karger AG, Basel
2011
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