Myocyte Morphological Characteristics Differ Between the Phases of Pulmonary Hypertension-Induced Ventricular Hypertrophy and Failure
スポンサーリンク
概要
- 論文の詳細を見る
Pulmonary hypertensive model rats were prepared by treating them with monochrotaline (MCT). Using these model rats, we examined myocyte remodeling in the right ventricle in response to increased right ventricular pressure. Male Sprague-Dawley rats were divided into 2 groups. Group M received MCT and group C received physiological saline. The 2 groups were examined at weeks 2, 5, and 7 after MCT or saline injection, respectively. At week 2, a significant difference in cell form was not observed in either group. At week 5, cell volume and myocyte cross-sectional area (CSA) of the right ventricle in group M were significantly greater than those in group C. At week 7, cell volume, CSA, and cell length of the right ventricle in group M were all significantly greater than those in group C. These results suggest that pulmonary hypertension causes hypertrophy, accompanying the enlargement of CSA in the right ventricle, and that cells lengthen in the phase of right ventricular failure. These results are similar to the changes observed in left ventricular myocytes due to overload pressure. Both right and left ventricular myocytes may share a common mechanism for myocyte remodeling as an adaptive and maladaptive response to increased ventricular pressure.
- International Heart Journal刊行会の論文
著者
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Mochizuki Seibu
Division Of Cardiology Department Of Internal Medicine Jikei Univerisity School Of Medicine
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Ohsawa Shingo
Division Of Cardiology Department Of Internal Medicine The Jikei University School Of Medicine
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Okazaki Fumiko
Division Of Cardiology Department Of Internal Medicine The Jikei University School Of Medicine
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Miyazaki Hidekazu
Division Of Cardiology Department Of Internal Medicine The Jikei University School Of Medicine
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Onodera Tatsuyuki
Division Of Cardiology Jikei University School Of Medicine
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Minami Shunrou
Division Of Cardiology Department Of Internal Medicine The Jikei University School Of Medicinge
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Miyazaki Hidekazu
Division of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine
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Minami Shunrou
Division of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine
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Onodera Tatsuyuki
Division of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine
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