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- 저자 : Naomasa Kawaguchi (검색결과 1 건)
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Ayako Uchinaka,Yoshinosuke Hamada,Seiji Mori,Shigeru Miyagawa,Atsuhiro Saito,Yoshiki Sawa,Nariaki Matsuura,Naomasa Kawaguchi 한국조직공학과 재생의학회 2015 조직공학과 재생의학 Vol.12 No.3
In ischemic heart disease, cardiomyocyte death results from both necrosis and apoptosis, and the area of infarction gradually increases. The induction of therapeutic angiogenesis is a promising therapy for this condition. In the present study, we investigated the actions of SV peptide—a 7-amino-acid sequence with angiogenic properties derived from osteopontin in the extracellular matrix—in a rat model of myocardial ischemia. We examined the angiogenesis activity of SV ex vivo using ring assay and dorsal air sac assay and in ischemic myocardium. We also conducted histological evaluations of left-ventricle remodeling and evaluated left ventricular (LV) function by echocardiography. The SV peptide had strong angiogenic effects both ex vivo and in vivo. In the experimental rats, this peptide stimulated the formation of new blood vessels in ischemic myocardium. Histological evaluation of the left ventricle in the SV-treated group showed a significant decrease in the size of the infarction, rate of myocardial fibrosis, and cardiomyocyte hypertrophy. Moreover, administration of the SV peptide significantly improved LV function. These results indicate that SV peptide induced angiogenesis in ischemic myocardium and improved cardiac function. Thus, it could serve as a potentially useful new therapy for ischemic heart disease.
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