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Journal Article
Multicenter Study
Randomized Controlled Trial
Impacts of estimated glomerular filtration rate on coronary atherosclerosis and plaque composition before and during statin therapy in patients with normal to mild renal dysfunction: subanalysis of the TRUTH study.
Nephrology 2012 September
AIM: Renal dysfunction is an independent risk factor for cardiovascular events. However, little is known regarding the impacts of renal dysfunction on coronary atherosclerosis.
METHODS: The effects of 8-month statin therapy on coronary atherosclerosis were evaluated in the TRUTH study using virtual histology intravascular ultrasound in 164 patients with angina pectoris. We analyzed correlations between the estimated glomerular filtration rate (eGFR) and coronary atherosclerosis before and during statin therapy.
RESULTS: Baseline eGFR was 64.5 mL/min per 1.73 m(2) . Serum low-density lipoprotein cholesterol level decreased significantly from 132 to 85 mg/dL (-35%, P < 0.0001) after 8 months. Weak, but significant, negative correlations were observed between eGFR and external elastic membrane volume (r = -0.228, P = 0.01) and atheroma volume (r = -0.232, P = 0.01) at baseline. The eGFR was also negatively correlated with fibro-fatty volume (r = -0.254, P = 0.005) and fibrous volume (r = -0.241, P = 0.008) at baseline. Multivariate regression analyses showed that eGFR was a significant independent predictor associated with statin pre-treatment volume in fibro-fatty (β = -0.23, P = 0.01) and fibrous (β = -0.203, P = 0.02) components. Furthermore, eGFR was positively correlated with volume change in the fibro-fatty component during statin therapy (r = 0.215, P = 0.02).
CONCLUSION: Decreased eGFR is associated with expanding remodelling and a greater atheroma volume, particularly the fibro-fatty and fibrous volume before statin therapy in patients with normal to mild renal dysfunction. Reduction of fibro-fatty volume during statin therapy gradually accelerated with decreasing renal function.
METHODS: The effects of 8-month statin therapy on coronary atherosclerosis were evaluated in the TRUTH study using virtual histology intravascular ultrasound in 164 patients with angina pectoris. We analyzed correlations between the estimated glomerular filtration rate (eGFR) and coronary atherosclerosis before and during statin therapy.
RESULTS: Baseline eGFR was 64.5 mL/min per 1.73 m(2) . Serum low-density lipoprotein cholesterol level decreased significantly from 132 to 85 mg/dL (-35%, P < 0.0001) after 8 months. Weak, but significant, negative correlations were observed between eGFR and external elastic membrane volume (r = -0.228, P = 0.01) and atheroma volume (r = -0.232, P = 0.01) at baseline. The eGFR was also negatively correlated with fibro-fatty volume (r = -0.254, P = 0.005) and fibrous volume (r = -0.241, P = 0.008) at baseline. Multivariate regression analyses showed that eGFR was a significant independent predictor associated with statin pre-treatment volume in fibro-fatty (β = -0.23, P = 0.01) and fibrous (β = -0.203, P = 0.02) components. Furthermore, eGFR was positively correlated with volume change in the fibro-fatty component during statin therapy (r = 0.215, P = 0.02).
CONCLUSION: Decreased eGFR is associated with expanding remodelling and a greater atheroma volume, particularly the fibro-fatty and fibrous volume before statin therapy in patients with normal to mild renal dysfunction. Reduction of fibro-fatty volume during statin therapy gradually accelerated with decreasing renal function.
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