Abstract:
:Ischemia/reperfusion (I/R) damages gastric mucosa via reactive oxygen species (ROS) activity. ROS was reportedly produced through angiotensin II stimulation in tissues such as kidney, heart and brain. To determine whether AT1 receptor plays a role in gastric mucosal damage, we examined the effect of AT1 receptor blocker (ARB; losartan, candesartan, valsartan) on I/R-induced gastric injury in rats. I/R produced microscopic gastric hemorrhagic injury, and increased gastric microvascular permeability and H(2)O(2) production in rats. The mucosal lesions induced by I/R were attenuated by pretreatment of each ARB. The increase in microvascular permeability was suppressed by losartan pretreatment. Additionally, I/R-caused H(2)O(2) activation was not observed by pretreatment of losartan, candesartan and valsartan. These results suggest that angiotensin II stimulation via AT1 receptor and following ROS production in the stomach contribute to the pathogenesis of the gastric I/R injury.
journal_name
Inflammopharmacologyjournal_title
Inflammopharmacologyauthors
Nakagiri A,Sunamoto M,Murakami Mdoi
10.1007/s10787-006-1551-3subject
Has Abstractpub_date
2007-08-01 00:00:00pages
171-4issue
4eissn
0925-4692issn
1568-5608journal_volume
15pub_type
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journal_title:Inflammopharmacology
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journal_title:Inflammopharmacology
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更新日期:2012-02-01 00:00:00
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doi:10.1163/156856003765764353
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更新日期:2007-10-01 00:00:00
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journal_title:Inflammopharmacology
pub_type: 杂志文章,评审
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更新日期:2005-01-01 00:00:00
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journal_title:Inflammopharmacology
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更新日期:2005-01-01 00:00:00
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更新日期:2004-01-01 00:00:00
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journal_title:Inflammopharmacology
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更新日期:2007-02-01 00:00:00
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journal_title:Inflammopharmacology
pub_type: 杂志文章
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更新日期:2005-01-01 00:00:00
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journal_title:Inflammopharmacology
pub_type: 杂志文章,评审
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更新日期:2009-06-01 00:00:00