Nuclear Hypertrophy Reflects Increased Biosynthetic Activities in Myocytes of Human Hypertrophic Hearts(Clinical Investigation)
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概要
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Background The nucleus of the myocytes in human hypertrophic hearts is characterized by its bizarre shape and widespread clumping of chromatin. The functional significance has not been determined. Methods and Results Left ventricular (LV) endomyocardial biopsies obtained from patients with dilated cardiomyopathy (DCM, n=23), postmyocarditis (n=13), hypertrophic cardiomyopathy (HCM, n=21), apical hypertrophic cardiomyopathy (APH, n=11) and hypertensive heart disease (HHD, n=11), and from nonhypertrophic hearts (controls, n=14) were examined. Myocyte size and LV mass index were similar among the hypertrophic hearts, but the nuclear hypertrophy score (grade 0-3) was highest in hearts with systolic failure (DCM and postmyocarditis) and higher in those without it (HCM, APH, and HHD), compared with controls. So were biosynthetic activities such as DNA repair/synthesis, immunohistochemically assessed by proliferating cell nuclear antigen, transcription activity by spliceosome component of 35kDa, and translation efficiency by 70kDa S6 protein kinase. There were significant correlations between nuclear hypertrophy and each biosynthetic activity. Additionally, most of the proliferating cell nuclear antigen-positive nuclei co-expressed oxidative DNA damage markers. Conclusion A link is suggested between structural alteration and molecular biological events in the nuclei of myocytes from human hypertrophic hearts; the nuclear hypertrophy reflects increased biosynthetic activities of DNA repair/synthesis, transcription, and translation efficiency.
- 社団法人日本循環器学会の論文
- 2006-05-20
著者
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FUJIWARA TAKAKO
Department of Pediatrics, Faculty of Medicine, Kyoto University
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岡田 正彦
新潟大学大学院予防医療学分野
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藤原 久義
岐阜大学第二内科
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岡田 正彦
Department Of Cardiology Gifu University Graduate School Of Medicine
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岡田 正彦
新潟大学医歯学総合病院検査部
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MINATOGUCHI Shinya
Second Department of Internal Medicine, Gifu University Graduate School of Medicine
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TAKEMURA Genzou
Second Department of Internal Medicine, Gifu University Graduate School of Medicine
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FUJIWARA Hisayoshi
Second Department of Internal Medicine, Gifu University School of Medicine
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Fujiwara Takako
Department Of Food Science Kyoto Women's University
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KANAMORI Hiromitsu
Division of Cardiology, Gifu University Graduate School of Medicine
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LI Longhu
Division of Cardiology, Gifu University Graduate School of Medicine
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Maruyama Rumi
Division Of Cardiology Gifu University Graduate School Of Medicine
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Maruyama Rumi
岐阜大学 病態情報解析医学
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Maruyama Rumi
岐阜大学 医学部第二内科
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Kanamori Hiromitsu
Division Of Cardiology Gifu University Graduate School Of Medicine
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Li Longhu
Division Of Cardiology Gifu University Graduate School Of Medicine
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岡田 正彦
新潟大学 医学部 検査診断学講座
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Ogino Atsushi
Division of Cardiology, Gifu University Graduate School of Medicine
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MARUYAMA Rumi
Second Department of Internal Medicine, Gifu University School of Medicine
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Ogino Atsushi
Second Department of Internal Medicine, Gifu University School of Medicine
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Kanamori Hiromitsu
Second Department of Internal Medicine, Gifu University School of Medicine
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Li Yiwen
Second Department of Internal Medicine, Gifu University School of Medicine
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Li Longhu
Second Department of Internal Medicine, Gifu University School of Medicine
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Okada Hideshi
Second Department of Internal Medicine, Gifu University School of Medicine
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Esaki Masayasu
Second Department of Internal Medicine, Gifu University School of Medicine
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Miyata Shusaku
Second Department of Internal Medicine, Gifu University School of Medicine
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Onogi Hirohito
Second Department Of Internal Medicine Gifu University School Of Medicine
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Li Yiwen
Second Department Of Internal Medicine Gifu University School Of Medicine
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Ogino Atsushi
Division Of Cardiology Gifu University Graduate School Of Medicine
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Miyata Shusaku
Advanced Critical Care Center Gifu University School Of Medicine
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Koda Masahiko
Second Department of Internal Medicine, Gifu University School of Medicine
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Kanoh Motoo
Second Department of Internal Medicine, Gifu University School of Medicine
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Kondo Takehito
Second Department of Internal Medicine, Gifu University School of Medicine
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藤原 久義
岐阜大学 大学院医学研究科東洋医学講座
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Koda Masahiko
Second Department Of Internal Medicine Faculty Of Medicine Tottori University
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Fujiwara Hisayoshi
Second Department Of Internal Medicine Gifu University Graduate School Of Medicine
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Fujiwara Takako
Pediatrics
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Kanoh Motoo
Second Department Of Internal Medicine Gifu University School Of Medicine
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Ezaki Masayasu
Department Of Cardiology Gifu University Graduate School Of Medicine
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Okada Hideshi
Department Of Cardiology Gifu University School Of Medicine
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Minatoguchi Shinya
Second Department Of Internal Medicine Gifu University Graduate School Of Medicine
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Esaki Masayasu
Second Department Of Internal Medicine Gifu University School Of Medicine
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Kondo Takehito
Second Department Of Internal Medicine Gifu University School Of Medicine
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Fujiwara Takako
Department Of Food Science Kyoto Women's University And The Third Division Department Of Intern
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Fujiwara Hisayoshi
Second Department Of Internal Medicine Faeulty Of Medicine Gifu University
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Miyata Shusaku
Second Dep. Of Internal Medicine Graduate School Of Medicine Gifu Univ.
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Takemura Genzou
Second Dep. Of Internal Medicine Graduate School Of Medicine Gifu Univ.
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