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Quinapril with High Affinity to Tissue Angiotensin-Converting Enzyme Reduces Restenosis after Percutaneous Transcatheter Coronary Intervention

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Abstract

Experimental studies have demonstrated that vascular injury resulted in an induction of vascular angiotensin-converting enzyme (ACE), and have suggested that inhibition of vascular ACE might be important in the prevention of restenosis. The present study aimed to determine the effect of quinapril, an ACE inhibitor with high affinity to tissue ACE, on restenosis following coronary intervention. The design of this study was a prospective, randomized, open, and non-placebo controlled trial. Patients with ischemic heart disease were enrolled after successful percutaneous transluminal coronary angioplasty or stent implantation at 7 participating institutions. Two hundred and fifty-three patients with 294 lesions were randomly assigned to the quinapril (10–20 mg per day) group or control group. Administration of quinapril was continued for 3–6 months of the follow-up. Quantitative coronary angiography was performed before and after angioplasty and at follow-up. Core laboratory measurements were performed independently and blinded. Follow-up angiography was performed in 108 patients with 124 lesions in the quinapril group and in 107 patients with 130 lesions in the control group. The baseline characteristics and findings of angioplasty showed no significant differences between the two groups. However, in the quinapril group, restenosis per patient and per lesion was significantly lower (34.3% vs. 47.7%, p < 0.05 and 30.6% vs. 43.8%, p < 0.05). Multivariable analysis revealed that administration of quinapril independently contributed to reducing the restenosis per patient and per lesion (odds ratio, 0.73; 95% confidence interval, 0.54–0.99 and odds ratio, 0.75; 95% confidence interval, 0.57–0.99). In conclusion, quinapril significantly reduces restenosis following coronary intervention.

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Authors and Affiliations

  1. Second Department of Internal Medicine, Hiroshima University, Faculty of Medicine, Hiroshima, Japan

    Tomokazu Okimoto, Michinori Imazu, Kotaro Sumii, Hideya Yamamoto, Mamoru Toyofuku & Nobuoki Kohno

  2. Tsuchiya General Hospital, Hiroshima, Japan

    Yasuhiko Hayashi

  3. Mazda Hospital, Hiroshima, Japan

    Yukihiko Gomyo & Futoshi Tadehara

  4. Hiroshima General Hospital, Hiroshima, Japan

    Yoshitaka Sekiguchi

  5. Hiroshima National Hospital, Higashi Hiroshima, Japan

    Kaoru Yanagihara

  6. Kure Kyosai Hospital, Kure, Japan

    Yasuaki Shimohara

Authors
  1. Tomokazu Okimoto
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  2. Michinori Imazu
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  3. Yasuhiko Hayashi
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  4. Yukihiko Gomyo
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  5. Yoshitaka Sekiguchi
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  7. Yasuaki Shimohara
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  8. Kotaro Sumii
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  9. Hideya Yamamoto
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  11. Mamoru Toyofuku
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  12. Nobuoki Kohno
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Okimoto, T., Imazu, M., Hayashi, Y. et al. Quinapril with High Affinity to Tissue Angiotensin-Converting Enzyme Reduces Restenosis after Percutaneous Transcatheter Coronary Intervention. Cardiovasc Drugs Ther 15, 323–329 (2001). https://doi.org/10.1023/A:1012758615035

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