PURPOSE: Clinical trials evaluating the effectiveness of therapy with hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors for reducing elevated C-reactive protein (CRP) levels and associated coronary events are reviewed. SUMMARY: Atherosclerotic plaque growth may be attenuated with therapy aimed at minimizing inflammation. Because increased levels of CRP have been associated with arterial-wall inflammation, statins can prevent ischemia by both inhibiting deposition of lipids and decreasing inflammation. Evaluation of recent clinical trials, including WOSCOPS, PRINCE, AFCAPS/ TexCAPS, MIRACL, CURVES, REVERSAL, and JUPITER, demonstrated the correlation of statin therapy with decreased levels of CRP. WOSCOPS found that patients with CRP values of > 4.59 mg/L at baseline were at the highest risk of coronary events. The PRINCE trial evaluated the antiinflammatory effects of pravastatin and found a mean 16.9% reduction in CRP levels after 24 weeks of therapy. AFCAPS/TexCAPS researchers found that lovastatin provded a 14.8% reduction in the median levels of CRP (p < 0.001). The MIRACL study showed that atorvastatin reduced CRP levels by 83% (p < 0.001). Researchers in the CURVES study found a significant reduction in CRP levels with pravastatin, simvastatin, and atorvastatin compared with baseline (p < 0.025). Results of the REVERSAL study linked atorvastatin with a 36.4% decrease in CRP levels, while pravastatin was associated with a 5.2% decrease (p < 0.0001). JUPITER is ongoing and will determine whether long-term use of rosuvastatin can reduce the rate of coronary events. CONCLUSION: The lowering of elevated CRP levels by statins may reduce the risk of coronary events independently of the effect of statins on lipid levels.

 

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