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Methods and Results: After left coronary artery occlusion for 15 min (n=23), 10 min (n=23), or 5min (n=12), Tc-A (80-150 MBq) was injected at 0.5, 1.5, 6, or 24 h after reperfusion. One hour later, to verify the area at risk, 201Tl (0.74 MBq) was injected just after left coronary artery re-occlusion and the rats were killed 1 min later. Dual tracer autoradiography was performed to assess Tc-A uptake and area at risk. In all 5-min occlusion and reperfusion models, no significant Tc-A uptake was observed in the area at risk. Tc-A uptake ratios in the 15-min and 10-min ischemia models were 4.46±3.16 and 2.02±0.47 (p=0.078) at 0.5 h after reperfusion, 3.49±1.78 and 1.47±0.11 (p\u003c0.05) at 1.5h after reperfusion, 1.60±0.43 and 1.34±0.23 (p=0.24) at 6h after reperfusion, 1.50±0.33 and 1.28±0.33 (p=0.099) at 24 h after reperfusion, respectively. 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99mTc-Annexin-V uptake in a rat model of variable ischemic severity and reperfusion time
http://hdl.handle.net/2297/6863
http://hdl.handle.net/2297/68635918b659-37a5-41fc-a418-afa982a4baa5
名前 / ファイル | ライセンス | アクション |
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HO-PR-TAKI-J-1141.pdf (451.6 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-05 | |||||
タイトル | ||||||
タイトル | 99mTc-Annexin-V uptake in a rat model of variable ischemic severity and reperfusion time | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Taki, Junichi
× Taki, Junichi× Higuchi, Takahiro× Kawashima, Atsuhiro× Tait, Jonathan F.× Muramori, Akira× Matsunari, Ichiro× Nakajima, Kenichi× Vanderheyden, Jean-Luc× Strauss, H. William |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学医学部附属病院核医学診療科 | |||||
書誌情報 |
Circulation Journal 巻 71, 号 7, p. 1141-1146, 発行日 2007-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1346-9843 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1253/circj.71.1141 | |||||
出版者 | ||||||
出版者 | 日本循環器学会 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Background: To determine whether mild to moderate ischemia that is not severe enough to induce myocardial infarction will cause myocardial cell damage or apoptosis, the 99mTc-Annexin-V (Tc-A) uptake was studied in groups of rats with various intervals of coronary occlusion and reperfusion times. Methods and Results: After left coronary artery occlusion for 15 min (n=23), 10 min (n=23), or 5min (n=12), Tc-A (80-150 MBq) was injected at 0.5, 1.5, 6, or 24 h after reperfusion. One hour later, to verify the area at risk, 201Tl (0.74 MBq) was injected just after left coronary artery re-occlusion and the rats were killed 1 min later. Dual tracer autoradiography was performed to assess Tc-A uptake and area at risk. In all 5-min occlusion and reperfusion models, no significant Tc-A uptake was observed in the area at risk. Tc-A uptake ratios in the 15-min and 10-min ischemia models were 4.46±3.16 and 2.02±0.47 (p=0.078) at 0.5 h after reperfusion, 3.49±1.78 and 1.47±0.11 (p<0.05) at 1.5h after reperfusion, 1.60±0.43 and 1.34±0.23 (p=0.24) at 6h after reperfusion, 1.50±0.33 and 1.28±0.33 (p=0.099) at 24 h after reperfusion, respectively. With 15-min ischemia, in 3 of the 5 rats there were a few micro-foci of myocardial cell degeneration and cell infiltration in less than 1% of the ischemic area at 24 h after reperfusion. No significant histological change was observed in rats with 10-min or 5-min ischemia. Conclusion: The data indicate that Tc-A binding depends on the severity of ischemia even without a significant amount of histological change or infarction. | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.jstage.jst.go.jp/article/circj/71/7/71_1141/_article |