Long-Term Effect of Spironolactone on Cardiac Structure as Assessed by Analysis of Ultrasonic Radio-Frequency Signals in Patients With Ventricular Hypertrophy
スポンサーリンク
概要
- 論文の詳細を見る
Background An effect of aldosterone on ventricular fibrosis has been demonstrated in animals, but remains unclear in human patients. This study aimed to investigate (1) the relationship between left ventricular (LV) fibrosis and myocardial ultrasonic texture as assessed with myocardial radio-frequency (RF) signals analyzed from the viewpoint of their waveform with chaos theory in animals and (2) serial changes in myocardial ultrasonic texture following long-term aldosterone blockade in patients with LV hypertrophy. Methods and Results In an animal study, Sprague-Dawley rats were divided into 2 groups with and without adriamycin administration, and the relationship between the RF signals and LV fibrosis was assessed. In a clinical study, effects of 12-month-administration of spironolactone were assessed in patients with LV hypertrophy. The animal study revealed that the correlation dimension (CD) calculated from the RF signals inversely correlated with the area of fibrosis. The clinical study demonstrated an increase in CD following 6-month administration of spironolactone. The changes in CD positively correlated with those in the serum carboxy-terminal telopeptide of collagen type I. Conclusion Myocardial RF signals analyzed with chaos theory reflect the severity of LV fibrosis. Aldosterone blockade may alter myocardial ultrasonic texture with regression of LV fibrosis, at least partly through enhanced collagen degradation.
- 社団法人日本循環器学会の論文
- 2005-10-20
著者
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MASUYAMA Tohru
Cardiovascular Division, Department of Internal Medicine Hyogo College of Medicine
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HORI Masatsugu
Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine
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Sakata Yasushi
Department of Cardiovascular medicine, Osaka University Graduate School Of Medicine
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Mano Toshiaki
Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine
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Yamamoto Kazuhiro
Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine
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Sawa Yoshiki
Department Of Cardiovascular Surgery Osaka Graduate School Of Medicine
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Yamamoto Kazuhiko
The Center For Advanced Medical Engineering And Informatics Osaka University
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Mano Toshiaki
Center For Advanced Medical Engineering And Informatics Osaka University
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Yamamoto Kazuhiko
Center For Advanced Medical Engineering And Informatics Osaka University
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Mano Toshiaki
Department Of Cardiovascular Medicine Osaka University Graduate School Of Medicine
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Sakata Yasushi
Department Of Cardiovascular Medicine Osaka University Graduate School Of Medicine
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Masuyama Tohru
Cardiovascular Division Department Of Internal Medicine Hyogo College Of Medicine
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Umekawa Seiko
Department of Clinical Laboratory Medicine, National Hospital Organization Osaka Minami Medical Cent
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YOSHIDA Junichi
Department of Surgery I, Department od Medical Informatics, and Clinical Laboratory, Kyushu Universi
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Masuyama Tohru
兵庫医科大学 循環器内科
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Harada Akimitsu
Medical Ultrasound Engineering Department Aloka Co Ltd
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Nishikawa Nagahiro
Department of Internal Medicine and Therapeutics, Osaka University Graduate School
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Yasuhara Yuki
Medical Ultrasound Engineering Department, Aloka Co Ltd
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Sonoyama Teruyuki
Medical Ultrasound Engineering Department, Aloka Co Ltd
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Matsuda Hikaru
Department Of Cardiology Osaka University Graduate School Of Medicine
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Yamamoto Kazuhiro
Department Of Biotechnology And Chemistry Kinki University
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Umekawa Seiko
Department Of Clinical Laboratory Medicine National Hospital Organization Osaka Minami Medical Cente
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Yasuhara Yuki
Medical Ultrasound Engineering Department Aloka Co Ltd
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Yamamoto Kazuhiro
Ultrasound Diagnostic Center Osaka University Hospital
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Yoshida Junichi
Department Of Cardiovascular Medicine Osaka University Graduate School Of Medicine
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Hori Masatsugu
Department Of Cardiology Ehime Prefectural Imabari Hospital
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Sonoyama Teruyuki
Medical Ultrasound Engineering Department Aloka Co Ltd
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Nishikawa Nagahiro
Department Of Cardiovascular Medicine Osaka University Graduate School Of Medicine
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Nishikawa Nagahiro
Department Of Cardiology Osaka General Hospital Of West Japan Railway Company
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Yamamoto Kazuhiro
Department of Biochemistry, Kinki University
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Sakata Yasushi
Department of Applied Chemistry, Faculty of Engineering, Doshisha University
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