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  • Title: Effects of obesity on lipid-lowering, anti-inflammatory, and antiatherosclerotic benefits of atorvastatin or pravastatin in patients with coronary artery disease (from the REVERSAL Study).
    Author: Nicholls SJ, Tuzcu EM, Sipahi I, Schoenhagen P, Hazen SL, Ntanios F, Wun CC, Nissen SE.
    Journal: Am J Cardiol; 2006 Jun 01; 97(11):1553-7. PubMed ID: 16728212.
    Abstract:
    The effect of obesity on atherosclerotic burden and its modulation by lipid-lowering therapy is unknown. The Reversal of Atherosclerosis with Aggressive Lipid Lowering (REVERSAL) study was analyzed to determine the influence of increasing body mass index (BMI) on plasma lipids, C-reactive protein, plaque burden as determined by intravascular ultrasound, and the serial change in these parameters with a moderate or intensive lipid-lowering strategy. Patients with a higher BMI were younger, more likely to be women, and had a greater prevalence of hypertension, diabetes, and the metabolic syndrome. Although a higher BMI was associated with a lower high-density lipoprotein level and higher triglyceride and C-reactive protein levels, there was no apparent influence of BMI on plaque burden. However, with the intensive lipid-lowering strategy, a greater BMI was associated with a lower proportionate decrease in low-density lipoprotein (49.1 +/- 21.4% vs 43.0 +/- 22.4%, p = 0.008) and a greater proportionate decrease in C-reactive protein (39.7% vs 33.3%, p <0.04). Further, although moderate and intensive lipid-lowering strategies halted plaque progression in subjects with a lower BMI (median progression rates +1.5% and +1.2%, respectively), a significant effect on plaque progression rates was seen only with adoption of an intensive lipid-lowering strategy in the most obese subjects (median progression rate -1.88% vs +6.5% with the moderate lipid-lowering strategy, p = 0.01). In conclusion, plaque progression in obese patients is attenuated using an intensive, but not moderate, lipid-lowering strategy. These results highlight the need for aggressive risk factor modification and a decrease in vascular inflammation in obese patients.
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