Is Structural Remodeling of Fibrillated Atria the Consequence of Tissue Hypoxia?
スポンサーリンク
概要
- 論文の詳細を見る
Background: Matrix metalloproteinases (MMPs) play an important role in degradation of the extracellular matrix of injured tissue. MMP-9 expression increases in fibrillating atrial tissue; however, the mechanism for this increase has not been clarified. Methods and Results: Changes in the expression of vascular endothelial growth factor (VEGF), VEGF receptors, and hypoxia-induced transcription factor-1α (HIF-1α) in fibrillating atrial tissue were investigated. Atrial tissue samples were obtained from 13 patients with atrial fibrillation (AF) and 25 patients without a history of AF (regular sinus rhythm, RSR) undergoing cardiac operations. Western blot, real-time polymerase chain reaction, and immunofluorescence analyses of the expression of VEGF, VEGF receptors, and HIF-1α were performed. The VEGF mRNA and protein levels increased significantly in the AF group compared with the RSR group (P<0.05), and the expression of HIF-1α protein was also significantly higher in the AF group. VEGF receptor-1 mRNA, a high-affinity receptor for VEGF, but not VEGF receptor-2 mRNA, was upregulated in the atria of the AF group (P<0.05). Immunofluorescence staining revealed excess production and co-localization of HIF-1α, VEGF and MMP-9 in the endothelium of the atrial arteries in the AF group. Conclusions: It is possible that upregulation of HIF-1/VEGF is involved in the enhancement of MMP-9 expression under hypoxic conditions. (Circ J 2010; 74: 1815 - 1821)
- 2010-08-25
著者
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ODA Noboru
Department of Organ Transplantation, National Cardiovascular Center
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Hirai Yukoh
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Science
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Nakano Yukiko
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Science
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Ogi Hiroshi
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Science
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Makita Yuko
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Science
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Kajiwara Kenta
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Science
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Kihara Yasuki
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Science
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Tonouchi Yukiji
Department of Cardiology, Hiroshima University School of Medicine
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Chayama Kazuaki
Department of Medicine and Molecular Biology, Hiroshima University School of Medicine
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Ueda Shigeyuki
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
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Kajihara Kenta
Department of Cardiology, Hiroshima University
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Dote Keigo
Department of Cardiology, Hiroshima City, Asa Hospital
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Ogi Hiroshi
Department Of Cardiology Hiroshima University School Of Medicine
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Hayashi Yasuhiko
Department Of Cardiovascular Physiology And Medicine Hiroshima University Graduate School Of Biomedi
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Imai Katsuhiko
Department of Cardiovascular Surgery, Hiroshima University Hospital
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Oda Noboru
Department Of Cardiology Hiroshima University School Of Medicine
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Kato Yukio
Department Of Cardiovascular Medicine Hiroshima University Graduate School Of Biomedical Sciences
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Makita Yuko
Department Of Cardiology Hiroshima University School Of Medicine
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Makita Yuko
Department Of Cardiology Hiroshima Prefectural Hospital
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Ueda Shigeyuki
Department Of Cardiovascular Medicine Hiroshima University Graduate School Of Biomedical Sciences
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Kajiwara Kenta
Department Of Cardiology Hiroshima University School Of Medicine
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Chayama Kazuaki
Department Of Medicine And Molecular Science Hiroshima University Graduate School Of Biomedical Scie
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Higashi Yukihito
Department Of Cardiovascular Physiology And Medicine Hiroshima University Graduate School Of Biomedi
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Dote Keigo
Department Of Cardiology Hiroshima City Asa Hospital
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Dote Keigo
Hiroshima City Asa Hospital
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Sueda Taijiro
Department Of Surgery Hiroshima University
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Chayama Kazuaki
The First Department Of Internal Medicine Hiroshima University School Of Medicine
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Nakano Yukiko
Department Of Cardiology Hiroshima University School Of Medicine
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Chayama Kazuaki
Deparmtment Of Gastroenterology Toranomon Hospital
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Suenari Kazuyoshi
Department Of Cardiology Hiroshima University School Of Medicine
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Kihara Yasuki
Department Of Cardiology Graduate School Of Medicine Kyoto University
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Suenari Kazuyosi
Department of Medicine and Molecular Science, Graduate School of Biomedical Sciences, Hiroshima Univ
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Nakano Yukiko
Department Of Biostructural Science Graduate School Of Tokyo Medical And Dental University
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Nakano Yukiko
Department Of Clinical Laboratory Medicine Hiroshima University School Of Medicine
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Higashi Yukihito
Department Of Molecular Internal Medicine Graduate School Of Biomedical Science Hiroshima University
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Imai Katsuhiko
Department Of Cardiovascular Surgery Hiroshima University Hospital
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Imai Katsuhiko
Department Of Surgery Hiroshima University Graduate School Of Biomedical Science
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Imai Katsuhiko
Department Of Cardiovascular Surgery Hiroshima University Graduate School Of Medicine
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Niida Shumpei
National Center For Geriatrics And Gerontology
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Ueda Shigeyuki
Department Of Cardiovascular Medicine Hiroshima University Graduate School Of Biomedical Science
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SUEDA Taijro
Department of Surgery, Hiroshima University Graduate School of Biomedical Science
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Hayashi Yasuhiko
Division Of Cardiology Department Of Medicine Hiroshima Akanekai Tsuchiya Hospital
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Chayama Kazuaki
Department Of Medicine And Molecular Science Hiroshima University Graduate School Of Biomedical Scie
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Hirai Yukoh
Department Of Molecular And Internal Medicine Hiroshima University Graduate School Of Biomedical Sci
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Kihara Yasuki
Departments Of Cardiovascular Medicine Graduate School Of Biomedical Sciences Hiroshima University
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Hirai Yuukou
Division Of Cardiology Akane Foundation Tsuchiya General Hospital
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Tonouchi Yukiji
Department Of Cardiovascular Medicine Hiroshima University Graduate School Of Biomedical Science
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Chayama Kazuaki
Department Of Medicine And Molecular Science Graduate School Of Biomedical Sciences Hiroshima Univer
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Nakano Yukiko
Department Of Medicine And Molecular Science Hiroshima University Graduate School Of Biomedical Scie
-
Chayama Kazuaki
Department Of Medicine And Molecular Science Hiroshima University Graduate School Of Biomedical Scie
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Kihara Yasuki
Department Of Cardiovascular Medicine Hiroshima University Hospital
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Chayama Kazuaki
Department Of Medicine And Molecular Science Hiroshima University Graduate School Of Biomedical Scie
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Hirai Yukoh
Department Of Internal Medicine Graduate School Of Biomedical Science Hiroshima University
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Higashi Yukihito
Department Of Cardiovascular Physiology And Medicine Hiroshima University Graduate School Of Biomedical Sciences
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Kajihara Kenta
Department of Cardiology, Hiroshima Prefectural Hospital
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