Abstract:
BACKGROUND AND PURPOSE:Postischemic cerebral inflammation may contribute to ischemic cell damage. Intercellular adhesion molecule-1 (ICAM-1) is a glycoprotein expressed on endothelial cells that facilitates leukocyte adhesion. We investigated the effect of administration of an anti-ICAM-1 antibody (1A29) on ischemic cell damage after transient (2-hour) or permanent middle cerebral artery (MCA) occlusion in the Wistar rat. METHODS:Groups studied were as follows: (1) transient MCA occlusion: rats were subjected to 2 hours of MCA occlusion, and after 1 hour of reperfusion they were treated with 1A29 (n = 11) or an isotype control antibody (n = 9); and (2) permanent MCA occlusion: rats were treated with 1A29 (n = 9) or an isotype control antibody (n = 7) 2 hours after onset of MCA occlusion. All animals were killed 1 week after onset of ischemia. Brain sections were stained with hematoxylin and eosin for histological evaluation. RESULTS:Significant reductions (P < .05) in both volume (44%) of the ischemic lesion and weight loss were found in animals subjected to transient MCA occlusion and treated with 1A29 compared with vehicle-treated animals. In contrast, in animals subjected to permanent MCA occlusion the lesion and the temporal profile of body weight were not altered by 1A29 administration. CONCLUSIONS:Ischemic cell damage is promoted by postischemic inflammatory response after 2 hours of transient MCA occlusion, and ischemic cell damage is reduced by administration of an anti-ICAM-1 antibody during reperfusion.
journal_name
Strokejournal_title
Strokeauthors
Zhang RL,Chopp M,Jiang N,Tang WX,Prostak J,Manning AM,Anderson DCdoi
10.1161/01.str.26.8.1438subject
Has Abstractpub_date
1995-08-01 00:00:00pages
1438-42; discussion 1443issue
8eissn
0039-2499issn
1524-4628journal_volume
26pub_type
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