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Premature Cardiac Senescence in DahlS.Z-Lepr fa/Lepr fa Rats as a New Animal Model of Metabolic Syndrome
https://doi.org/10.18999/nagjms.76.1-2.35
https://doi.org/10.18999/nagjms.76.1-2.353a2ac68f-2001-413c-a875-fd177b480659
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2014-03-03 | |||||
タイトル | ||||||
タイトル | Premature Cardiac Senescence in DahlS.Z-Lepr fa/Lepr fa Rats as a New Animal Model of Metabolic Syndrome | |||||
著者 |
TAKAHASHI, KEIJI
× TAKAHASHI, KEIJI× TAKATSU, MIWA× HATTORI, TAKUYA× MURASE, TAMAYO× OHURA, SAE× TAKESHITA, YUURI× WATANABE, SHOGO× MUROHARA, TOYOAKI× NAGATA, KOHZO |
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キーワード | ||||||
主題Scheme | Other | |||||
主題 | metabolic syndrome | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | cardiac remodeling | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | oxidative stress | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | renin-angiotensin-aldosterone system | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | cardiac senescence | |||||
抄録 | ||||||
内容記述 | Aging is accelerated by metabolic and cardiovascular diseases, and the risk of these diseases increases with age. Obesity is an important risk factor for many age-related diseases and is linked to reduced telomere length in white blood cells. We investigated whether cardiac senescence might be enhanced in DahlS.ZLepr fa/Lepr fa (DS/obese) rats, which we recently established as a new animal model of metabolic syndrome. The heart of DS/obese rats was compared with that of homozygous lean littermates (DahlS.Z-Lepr+/Lepr+, or DS/lean, rats). DS/obese rats manifested hypertension as well as left ventricular hypertrophy, fibrosis, and diastolic dysfunction at 18 weeks of age. Myocardial oxidative stress and inflammation were increased in DS/obese rats compared with DS/lean rats. Telomere length in myocardial cells did not differ between the two rat strains, whereas telomerase activity and expression of the telomerase reverse transcriptase gene were increased in DS/obese rats. Expression of the senescence-associated genes for checkpoint kinase 2 (Chk2), p53, and p21 as well as that of genes related to the renin-angiotensin-aldosterone system were also up-regulated in the DS/obese rat heart. Our results indicate that DS/obese rats undergo premature cardiac senescence as well as cardiac remodeling in association with the development of diastolic dysfunction in these animals. | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
出版者 | Nagoya University School of Medicine | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.18999/nagjms.76.1-2.35 | |||||
ID登録タイプ | JaLC | |||||
ISSN(print) | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0027-7622 | |||||
書誌情報 |
Nagoya Journal of Medical Science 巻 76, 号 1-2, p. 35-49, 発行日 2014-02 |
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著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://www.med.nagoya-u.ac.jp/medlib/nagoya_j_med_sci/7612/7612.html | |||||
識別子タイプ | URI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/19482 | |||||
識別子タイプ | HDL |