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Atorvastatin improves endothelial function and cardiac performance in patients with dilated cardiomyopathy: the role
Miao Liu1, Fang Wang, Yanrong Wang
1Department of paediatrics, Wuhan Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China.
Insights
Atorvastatin treatment in patients with idiopathic dilated cardiomyopathy (IDCM) significantly improved cardiac function and exercise capacity. The drug reduced inflammation and improved endothelial function, offering a potential therapeutic benefit for IDCM patients.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Statins are known to impact cardiac disease prognosis.
- Pleiotropic effects of statins in cardiac patients are increasingly recognized.
Purpose of the Study:
- To investigate the effects of atorvastatin on inflammation, endothelial function, cardiac performance, and exercise tolerance in patients with idiopathic dilated cardiomyopathy (IDCM).
Main Methods:
- Sixty-four IDCM patients were randomized into atorvastatin (10 mg/d) and placebo groups.
- Evaluated biomarkers: soluble intercellular adhesion molecule-1 (sICAM-1), Von Willebrand factor (vWF), C-reactive protein (CRP).
- Assessed endothelial function (Flow-mediated dilatation - FMD), cardiac performance (left ventricular ejection fraction - LVEF), and exercise tolerance (6-min walk test - 6MWT) before and after 12 weeks.
Main Results:
- Atorvastatin significantly increased LVEF and 6MWT distance compared to placebo (P < 0.05).
- Treatment reduced sICAM-1, CRP, and vWF levels, and increased FMD significantly in the atorvastatin group.
- Baseline sICAM-1 correlated positively with CRP and vWF; FMD correlated inversely with sICAM-1 and vWF, and positively with LVEF and 6MWT.
Conclusions:
- Twelve weeks of atorvastatin therapy improved LVEF, 6MWT outcomes, and endothelial function in IDCM patients.
- Mechanisms may involve the inhibition of inflammation and alleviation of endothelial damage/dysfunction.
- Atorvastatin shows promise for improving cardiac function and exercise tolerance in IDCM.
Aim:
Statins have been demonstrated to significantly affect the prognosis and outcome of patients with cardiac diseases. Several studies have suggested pleiotropic effects of the statins in these patients. The present study was designed to examine the effects of atorvastatin on inflammation, endothelial function, cardiac performance and exercise tolerance in patients with idiopathic dilated cardiomyopathy (IDCM).
Methods:
Sixty-four patients with IDCM were divided randomly into an atorvastatin treatment group (atorvastatin 10 mg/d orally) and a placebo control group. Before and 12 weeks after the treatment, circulating soluble intercellular adhesion molecule-1 (sICAM-1), Von Willebrand factor (vWF) and C-reactive protein (CRP) levels were detected using enzyme-linked immunosorbent assay (ELISA); Flow-mediated dilatation (FMD) of the brachial artery was measured, and left ventricular ejection fraction (LVEF) and the 6-min walk test (6MWT) evaluated.
Results:
After atorvastatin treatment, LVEF increased from 34.5 +/- 5.7% to 41.4 +/- 4.5% (P < 0.05), and from 32.8 +/- 4.0% to 36.9 +/- 5.2% (P < 0.05) in the placebo group. Also, the distances covered in the 6MWT increased from 358 +/- 61 m to 431 +/- 66 m in the atorvastatin group, and from 351 +/- 70 m to 382 +/- 74 m in the placebo group (both p < 0.05 vs. baseline). The increases in LVEF and 6MWT distances were significantly greater in the atorvastatin than in the placebo group. sICAM-1, CRP and vWF levels decreased and FMD increased significantly in the atorvastatin group, but not in the control group. Correlation analysis showed that the baseline sICAM-1 level was positively correlated with plasma CRP and vWF levels (r = 0.554 and 0.628, respectively); FMD was inversely correlated with serum sICAM-1 and plasma vWF levels (r = -0.579 and -0.590, respectively) and positively correlated with LVEF and distance attained in 6MWT (r = 0.536 and 0.522, respectively).
Conclusions:
Twelve weeks of treatment with atorvastatin significantly decreased serum sICAM-1, CRP and vWF levels, and improved the FMD, LVEF and 6MWT outcomes. Inhibition of inflammation, alleviating endothelium damage and endothelial dysfunction might comprise part of the underlying mechanisms leading to the improvement of LV function and exercise tolerance in patients with IDCM.
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