Abstract:
:Oxygen free radical scavengers have been found to decrease infarct size in dogs subjected to myocardial ischemia-reperfusion injury. A baboon open-chest model was used to determine if superoxide dismutase (SOD), an oxygen free radical scavenger, together with catalase would be equally effective in subhuman primates (baboons). The left anterior descending coronary artery (LAD) was ligated for 2 hours. Before reperfusion, the animals received the following: Group 1 (low-dose SOD/catalase; n = 5) received 15,000 IU/kg of SOD and 55,000 IU/kg of catalase IV over 1 hour, 15 minutes before reperfusion. Group 2 (high-dose human SOD [h-SOD]/catalase; n = 5) received an intraatrial bolus of 400,000 IU of recombinant h-SOD and 27,500 IU/kg of catalase over 30 seconds, followed by 300,000 IU of h-SOD and 55,000 IU/kg of catalase over 1 hour, beginning 15 seconds before reperfusion. Group 3 (n = 8) were control animals. Baboons were put to death 22 hours after reperfusion. Their hearts were excised and sectioned after the perfusion bed distal to the site of ligation was delineated with microvascular dye. The infarct zone was determined histologically. Areas of the perfusion bed and infarct zone were measured by planimetry. Infarct size did not differ significantly between the three groups: control, 66 +/- 7%; low-dose SOD/catalase, 68 +/- 5%; and high-dose h-SOD/catalase, 74 +/- 4%. In this model, high- and low-dose SOD with catalase did not result in any significant reduction in infarct size.
journal_name
Am Heart Jjournal_title
American heart journalauthors
Watanabe BI,Premaratne S,Limm W,Mugiishi MM,McNamara JJdoi
10.1016/0002-8703(93)90697-8subject
Has Abstractpub_date
1993-10-01 00:00:00pages
840-6issue
4eissn
0002-8703issn
1097-6744pii
0002-8703(93)90697-8journal_volume
126pub_type
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更新日期:2006-02-01 00:00:00
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更新日期:2008-08-01 00:00:00
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doi:10.1016/s0002-8703(03)00520-9
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doi:10.1016/0002-8703(93)90542-h
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pub_type: 杂志文章
doi:10.1016/s0002-8703(99)70242-5
更新日期:1999-07-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(99)70142-0
更新日期:1999-09-01 00:00:00
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doi:10.1016/0002-8703(92)90495-h
更新日期:1992-03-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2014.01.016
更新日期:2014-06-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2013-04-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:1998-10-01 00:00:00
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doi:10.1016/S0002-8703(03)00254-0
更新日期:2003-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/s0002-8703(77)80255-x
更新日期:1977-03-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(07)80024-x
更新日期:1993-07-01 00:00:00
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journal_title:American heart journal
pub_type: 临床试验,杂志文章
doi:10.1067/mhj.2001.118739
更新日期:2001-12-01 00:00:00
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doi:10.1016/0002-8703(85)90514-9
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1067/mhj.2001.113222
更新日期:2001-03-01 00:00:00
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更新日期:1992-04-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2013.06.011
更新日期:2013-09-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2005.01.048
更新日期:2005-12-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2009.06.023
更新日期:2009-09-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(91)90184-j
更新日期:1991-03-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(99)70162-6
更新日期:1999-09-01 00:00:00
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journal_title:American heart journal
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2001-03-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(90)90023-q
更新日期:1990-09-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(88)90255-4
更新日期:1988-07-01 00:00:00