The Korean journal of internal medicine

  • 제30권1호
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  • Pages.42-48
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  • 2015
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  • 1226-3303(pISSN)
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  • 2005-6648(eISSN)
대한내과학회 (The Korean Association of Internal Medicine)
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Impact of an endothelial progenitor cell capturing stent on coronary microvascular function: comparison with drug-eluting stents

  • Choi, Woong Gil (Division of Cardiology, Department of Internal Medicine, Konkuk University School of Medicine) ;
  • Kim, Soo Hyun (Division of Cardiology, Department of Internal Medicine, Konkuk University School of Medicine) ;
  • Yoon, Hyung Seok (Division of Cardiology, Department of Internal Medicine, Konkuk University School of Medicine) ;
  • Lee, Eun Joo (Division of Cardiology, Department of Internal Medicine, Konkuk University School of Medicine) ;
  • Kim, Dong Woon (Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital)
  • 투고 : 2014.01.13
  • 심사 : 2014.06.30
  • 발행 : 2015.01.01
⟨ 이전 논문 다음 논문 ⟩

초록

Background/Aims: Although drug-eluting stents (DESs) effectively reduce restenosis following percutaneous coronary intervention (PCI), they also delay re-endothelialization and impair microvascular function, resulting in adverse clinical outcomes. Endothelial progenitor cell (EPC) capturing stents, by providing a functional endothelial layer on the stent, have beneficial effects on microvascular function. However, data on coronary microvascular function in patients with EPC stents versus DESs are lacking. Methods: Seventy-four patients who previously underwent PCI were enrolled in this study. Microvascular function was evaluated 6 months after PCI based on the index of microvascular resistance (IMR) and the coronary flow reserve (CFR). IMR was calculated as the ratio of the mean distal coronary pressure at maximal hyperemia to the inverse of the hyperemic mean transit time (hTmn). The CFR was calculated by dividing the hTmn by the baseline mean transit time. Results: Twenty-one patients (age, $67.2{\pm}9.6years$; male:female, 15:6) with an EPC stent and 53 patients (age, $61.5{\pm}14.7years$; male:female, 40:13) with second-generation DESs were included in the study. There were no significant differences in the baseline clinical and angiographic characteristics of the two groups. Angiography performed 6 months postoperatively did not show significant differences in their CFR values. However, patients with the EPC stent had a significantly lower IMR than patients with second-generation DESs (median, 25.5 [interquartile range, 12.85 to 28.18] vs. 29.0 [interquartile range, 15.42 to 39.23]; p = 0.043). Conclusions: Microvascular dysfunction was signif icantly improved after 6 months in patients with EPC stents compared to those with DESs. The complete re-endothelialization achieved with the EPC stent may provide clinical benefits over DESs, especially in patients with microvascular dysfunction.

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참고문헌

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피인용 문헌

  1. Can improvements in our physiological understanding yield information on the utility of endothelial progenitor cell capture stents? vol.30, pp.1, 2015, https://doi.org/10.3904/kjim.2015.30.1.27
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