Echographical Assessment of the Early Stage of Experimental Atherosclerosis of the Descending Aorta in Rabbits
スポンサーリンク
概要
- 論文の詳細を見る
To assess the early stage of atherosclerosis of the thoracic descending aorta, we evaluated morphological atheromatous lesions (atherosis) and the stiffness parameter of the artery (β; sclerosis) in 24 male rabbits using echography. Male Japanese white rabbits weighing 2.5-3.0 kg were fed a diet containing 1% cholesterol for 7 (n=8) or 14 weeks (n=8). Rabbits fed a normal diet were used as controls (n=8). Atheromatous lesions were evaluated with intravascular ultrasound (IVUS: Aloka, 20 MHz, 6F). We also calculated β using M-mode echography (7.5 or 10 MHz) and direct aortic pressure measurement. Thickening of the intima-media complex was clearly observed with IVUS in the 14-week group but was not detected in the others. Histologically, only a thin layer of foamy cells on the intima (thickness <20 μm) was observed in the 7-week group. The value of β was significantly increased in both the 7-week (4.7±2.2) and 14-week groups (4.5±0.8) compared with controls (1.7±0.9, both p<0.01). These results suggest that the development of atherosis might be preceded by vascular sclerosis during the early stage of atherosclerosis when the serum cholesterol level is high: at a time when the thin layer of foamy cells could not be detected by conventional IVUS.
- 社団法人日本循環器学会の論文
- 1996-08-20
著者
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UMEMOTO Seiji
the Second Department of Internal Medicine, Yamaguchi University School of Medicine
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MATSUZAKI Masunori
the Second Department of Internal Medicine, Yamaguchi University School of Medicine
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Matsuoka M
Division Of Cardiology Department Of Medicine And Clinical Science Yamaguchi University Graduate Sch
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Hiromoto Mitsuyuki
Shuto General Hospital
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TOMA Yoichi
The second Department of Internal Medicine, Yamaguchi University School of Medicine
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TOMOCHIKA Yasuaki
The second Department of Internal Medicine, Yamaguchi University School of Medicine
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Umemoto Seiji
Second Dept.of Int.med. Yamaguchi University School Of Medicine
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Toma Yoichi
Yamaguchi National Hospital and Internal Medicine Yamaguchi Univ. School of Medicine
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Umemoto Seiji
Yamaguchi National Hospital and Internal Medicine Yamaguchi Univ. School of Medicine
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Hiromoto Mitsuyuki
The Second Department of Internal Medicine, Yamaguchi University School of Medicine
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Tomochika Yasuaki
Second Department of Internal Medicine
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Toma Yoichi
The 2nd Dept.of Int.med. Yamaguchi University
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Toma Yoichi
The Second Division Of Internal Medicine Yamaguchi University School Of Medicine
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Matsuzaki Masunori
The 2nd Dept.of Int.med. Yamaguchi University
-
Tomochika Yasuaki
Second Dep. Of Int. Med. Yamaguchi University
-
Matsuzaki Masunori
The Second Department Of Internal Medicine University Of Yamaguchi
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Umemoto Seiji
The Second Department Of Internal Medicine University Of Yamaguchi
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Toma Yoichi
The Second Department Of Internal Medicine Yamaguchi University School Of Medicine
-
Toma Yoichi
Division Of Cardiology Department Of Medicine And Clinical Science Yamaguchi University Graduate Sch
-
Michishige Hiroyuki
Shuto General Hospital
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Michishige Hiroyuki
2nd Department Of Internal Medicine And Department Of Clinical Laboratory Science
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Tohma Y.
2nd Internal Med. Yamaguchi Univ. Ube
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Tomochika Yasuaki
The Second Department Of Internal Medicine Yamaguchi University School Of Medicine
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Matsuzaki Masunori
The Depart. Of Int. Med. Yamaguchi Univers. School Of Med.
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