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The area of annexin uptake had expanded in the subendocardial and subepicardial layers at 6 h after reperfusion and then gradually lessened over 3 d. At 0.5 and 1.5 h of reperfusion, 99mTc-annexin V uptake ratios were 7.36 +/- 2.95 and 6.34 +/- 2.24 (mean +/- SD), respectively. The uptake ratios gradually decreased at 6 h, 1 d, 3 d, and 2 wk after reperfusion (4.65 +/- 1.93, 3.27 +/- 0.92 [P \u003c 0.01 vs. 0.5 h], 1.84 +/- 0.55 [P \u003c 0.001 vs. 0.5 h, P \u003c 0.005 vs. 1.5 h], and 1.65 +/- 0.31 [P \u003c 0.001 vs. 0.5 h, P \u003c 0.005 vs. 1.5 h], respectively). 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Detection of cardiomyocyte death in a rat model of ischemia and reperfusion using 99mTc-labeled annexin V.
http://hdl.handle.net/2297/2791
http://hdl.handle.net/2297/279133195d60-67a5-429f-9330-a8db40641e82
名前 / ファイル | ライセンス | アクション |
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ME-PR-TAKI-J-1536.pdf (180.1 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Detection of cardiomyocyte death in a rat model of ischemia and reperfusion using 99mTc-labeled annexin V. | |||||
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.× Kinuya, Seigo× Muramori, Akira× Matsunari, Ichiro× Nakajima, Kenichi× Tonami, Norihisa× Strauss, H. William |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学大学院医学系研究科 | |||||
書誌情報 |
Journal of nuclear medicine : official publication, Society of Nuclear Medicine 巻 45, 号 9, p. 1536-1541, 発行日 2004-09-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0161-5505 | |||||
出版者 | ||||||
出版者 | THE SOCIETY OF NUCLEAR MEDICINE INC | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | There is increasing evidence that cell death after myocardial ischemia and reperfusion may begin as apoptosis rather than necrosis. To determine the time course, location, and extent of this process, we studied groups of rats after a 20-min interval of coronary occlusion and reperfusion. METHODS: After thoracotomy, the left coronary artery was occluded for 20 min. After release and before study, groups of animals were allowed to recover for various intervals: 0.5 h (n = 6), 1.5 h (n = 7), 6 h (n = 7), 1 d (n = 8), 3 d (n = 8), or 2 wk (n = 5). At the time of study, the rats were injected with 99mTc-annexin V (80-150 MBq). One hour later, to verify the area at risk, 201Tl (0.74 MBq) was injected intravenously just after the left coronary artery reocclusion and the rats were sacrificed 1 min later. Dual-tracer autoradiography was performed to assess 99mTc-annexin V uptake and the area at risk. RESULTS: Extensive 99mTc-annexin V uptake was observed in the mid myocardium after 0.5-1.5 h of reperfusion. The area of annexin uptake had expanded in the subendocardial and subepicardial layers at 6 h after reperfusion and then gradually lessened over 3 d. At 0.5 and 1.5 h of reperfusion, 99mTc-annexin V uptake ratios were 7.36 +/- 2.95 and 6.34 +/- 2.24 (mean +/- SD), respectively. The uptake ratios gradually decreased at 6 h, 1 d, 3 d, and 2 wk after reperfusion (4.65 +/- 1.93, 3.27 +/- 0.92 [P < 0.01 vs. 0.5 h], 1.84 +/- 0.55 [P < 0.001 vs. 0.5 h, P < 0.005 vs. 1.5 h], and 1.65 +/- 0.31 [P < 0.001 vs. 0.5 h, P < 0.005 vs. 1.5 h], respectively). CONCLUSION: These data indicate that annexin binding commences soon after ischemia and reperfusion in the mid myocardium within the area at risk and expands to include the subendocardial and subepicardial layers at 6 h after reperfusion, followed by gradual reduction of activity over 3 d. | |||||
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 |