Orally Administered Benidipine and Manidipine Prevent Ischemia-Reperfusion Injury in the Rat Heart
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概要
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Background The present study was designed to investigate whether orally administered benidipine and manidipine protect the myocardium from ischemia- reperfusion injury. Methods and Results Each drug (1, 3 or lOmg/kg) was administered orally once daily for 1 week. The isolated rat heart model (Langendorff perfusion) was used, and each heart was subjected to global ischemia at 37℃ for 40 min followed by reperfusion. Post-ischemic recovery of left ventricular (LV) function (measured as developed pressure (LVDP), dP/dt max and end-diastolic pressure) was compared with a control group. Creatine kinase (CK) leakage was also measured. Post-ischemic recovery of LVDP and LV dP/dt max were significantly increased by 3mg/kg benidipine (LVDP: 87.5±10.1 vs 64.6±11.9%; LV dP/dt max: 97.8±10.4 vs 70.2±15.7%; p<0.05). CK leakage was significantly lower than in the control group (39.4±7.5 vs 61.1±9.8IU per 15min per kg; p<0.05). Manidipine produced significant recoveries in LVDP and dP/dt max at a dose of 1 mg/kg (LVDP: 93.7±16.5% vs 53.4±9.5%; dP/dt max: 104.2±21.9% vs 55.5±15.5%; p<0.05). CK leakage was also significantly reduced at the same dose (50.0±18.3 vs 80.1±14.0IU per 15min per kg; p<0.05). Conclusions Orally administered benidipine and manidipine exerted significant cardioprotective effects against ischemia-reperfusion injury.
- 2004-02-20
著者
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HIRAI Hidekazu
Department of Cardiovascular Surgery, Osaka City University Graduate School of Medicine
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SUEHIRO Shigefumi
Department of Cardiovascular Surgery, Osaka City University Graduate School of Medicine
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HATTORI KOJI
Department of Orthopaedic Surgery, Nara Medical University
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Hattori Koji
Department Of Cardiovascular Surgery Osaka City University Graduate School Of Medicine
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Hirai Hidekazu
Department Of Cardiovascular Surgery Osaka City University Graduate School Of Medicine
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Hirai Hidekazu
Department Of Cardiovascular Sugery Osaka City University Graduate School Of Medicine
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Shibata Toshihiko
Department Of Cardiovascular Surgery Osaka City University Graduate School Of Medicine
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Aoyama Takanobu
Department Of Cardiovascular Surgery Osaka City University Graduate School Of Medicine
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Aoyama Takanobu
Department Of Cardiovascular Sugery Osaka City University Graduate School Of Medicine
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Hosono Mitsuharu
Department Of Cardiovascular Surgery Osaka City University Graduate School Of Medicine
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Suehiro Shigefumi
Department Of Cardiovascular Surgery Graduate School Of Medicine Osaka City University
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Suehiro Shigefumi
The Second Department Of Surgery And Department Of Cardiovascular Surgery Osaka City University Medi
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SAKAGUCHI Masanori
Department of Physiology, Keio University School of Medicine
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Ikuta Takeshi
Department Of Cardiovascular Surgery Osaka City University Graduate School Of Medicine
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BITO Yasuyuki
Department of Cardiovascular Surgery, Osaka City University Medical School
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Bito Yasuyuki
Department Of Cardiovascular Surgery Kansai Rousai Hospital
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Shibata Toshihiko
Department Of Cardiovascular Surgery Osaka City General Hospital
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Shibata Toshihiko
Department Of Cardiothoracic Vascular Surgery Osaka City General Hospital
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Shibata Toshihiko
Department Of General Practice Osaka City University Hospital
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Sakaguchi Masanori
Department Of Cardiovascular Surgery Osaka City University Graduate School Of Medicine
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Hattori Koji
Department Of Applied Biological Sciences Saga University
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Ikuta Takeshi
Department Of Cardiovascular Surgery Kansai Rosai Hospital
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Suehiro Shigefumi
The Second Department Of Surgery And Department Of Cardiovascular Surgery Osaka City University Medi
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Ikuta Takeshi
Department Of Cardiovascular Surgery Ishikiriseiki Hospital
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