Abstract:
:Lung dysfunction after cardiopulmonary bypass and lung transplantation results from oxidant-mediated cellular damage. Previously, we observed the shedding of angiotensin-converting enzyme (ACE) from the endothelial cell surface to be a more sensitive and earlier marker of oxidative lung endothelial injury than lung wet-to-dry weight ratio. The aim of this study was to evaluate the potential of the anesthetic propofol, which has antioxidant properties, to prevent oxidative lung injury by measuring ACE shedding. ACE release from isolated perfused rat lungs increased significantly after ischemia-reperfusion (I/R). Propofol significantly decreased I/R-induced ACE release by 23.4% (P < 0.05). Perfusion with 0.75 mM H(2)O(2) also caused ACE release from the lung microvasculature, which was similarly attenuated by propofol. The protective effect of propofol on H(2)O(2)-induced ACE shedding was confirmed in vitro using Chinese Hamster Ovary cells overexpressing human ACE. Thus, propofol can attenuate oxidative injury of the pulmonary endothelium as detected by ACE shedding in I/R and H(2)O(2) models of acute lung injury.
journal_name
Anesth Analgjournal_title
Anesthesia and analgesiaauthors
Balyasnikova IV,Visintine DJ,Gunnerson HB,Paisansathan C,Baughman VL,Minshall RD,Danilov SMdoi
10.1213/01.ANE.0000147707.49192.88subject
Has Abstractpub_date
2005-04-01 00:00:00pages
929-36issue
4eissn
0003-2999issn
1526-7598pii
100/4/929journal_volume
100pub_type
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
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