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Short-term Lipid-Lowering Treatment with Atorvastatin Improves Renal Function But Not Renal Blood Flow Indices in Patients with Peripheral Arterial Disease

University Department of Surgery, Royal Free Hospital NHS Trust and Royal Free and University College Medical School, University College London, London, UK

F. Youssef, FRCS

University Department of Surgery, Royal Free Hospital NHS Trust and Royal Free and University College Medical School, University College London, London, UK

D. P. Mikhailidis, MD, FASA, FRCP, FRCPath

University Departments of Surgery and Clinical Biochemistry, Royal Free Hospital NHS Trust and Royal Free and University College Medical School, University College London, London, UK, mikhailidis{at}aol.com

G. Hamilton, MD, FRCS

University Department of Surgery, Royal Free Hospital NHS Trust and Royal Free and University College Medical School, University College London, London, UK

Some studies have suggested that lipid lowering with statins exerts favorable effects on the progression of chronic kidney disease. Therefore, the authors assessed the effects of short-term atorvastatin treatment on biochemical markers of renal function and evaluated duplex indices of renal blood flow (RBF) in patients with peripheral arterial disease. Hyperlipidemic claudicants (n=18), aged 44-85 years, were treated for 8 weeks with 20 mg/day atorvastatin. Blood tests at baseline and after 8 weeks included serum fasting lipids, creatinine, urate, and cystatin C (a sensitive indicator of renal function) levels. RBF was also assessed (n=9) by measuring pulsatile and resistance duplex indices. As expected, there was a significant improvement in total cholesterol, low-density lipoprotein cholesterol, and triglycerides. There was also a significant (p<0.0001) fall in serum creatinine from 89 (58-125) to 79 µmol/L (54-119) and an increase in calculated creatinine clearance (CrCl) from 72 (40-129) to 80 mL/minute (47-138; p<0.0001). Serum cystatin C values decreased significantly (p=0.0002) from 1.04 (0.57-1.56) to 0.90 mg/L (0.47-1.47). There were no detectable changes in the RBF duplex indices. Treatment of stable claudicants with atorvastatin for 8 weeks was associated with improved renal function (as assessed by serum creatinine, cystatin C, and calculated CrCl) without changes in RBF. Further studies are required to identify the mechanisms involved in this phenomenon.

Angiology, Vol. 57, No. 1, 65-71 (2006)
DOI: 10.1177/000331970605700109


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