JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
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Impact of statin therapy intensity on endothelial progenitor cells after percutaneous coronary intervention in diabetic patients. The REMEDY-EPC late study.

BACKGROUND: A low number (that is, ≤0.0038 per 100 peripheral mononuclear cells) of circulating endothelial progenitor cells (EPC) is common in diabetic patients. Statins increase EPC levels. It is unclear whether intensity of statin therapy has a different impact on EPC levels.

METHODS: Diabetic patients undergoing drug-eluting stent (DES) implantation were randomized to 1) High intensity statin therapy (atorvastatin 80mg/day; n=66) or 2) Moderate intensity statin therapy (atorvastatin 20mg/day; n=64). EPC levels were assessed at baseline, 24h and 3months. Endpoints assessed at 3months were 1) changes in the proportion of patients with low EPC levels, and 2) uncovered struts rate and neointima growth evaluated by optical coherence tomography.

RESULTS: Low EPC levels rate significantly decreased in the High intensity statin therapy group (from 31.7% to 12.7%; p=0.017) but not in the Moderate intensity statin therapy group (from 25.5% to 21.8%; p=0.81). Uncovered struts rate was similar in the 2 groups (2.4±2.6% vs 2.3±2.2%; p=0.82), whereas mean neointima area and volume were lower in the High intensity statin therapy group (0.68±0.69 vs 1.22±1.29mm2 ; p=0.001; and, respectively, 13.10±5.77 vs 20.19±24.08mm3 ; p=0.042).

CONCLUSIONS: In diabetic patients, a high intensity statin therapy 1) significantly increases EPC levels and decreases in-stent neointima area and volume, and 2) does not have an impact on the degree of stent re-endothelialization at 3months after DES implantation.

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