TITLE

Neutrophil protein kinase Cdelta as a mediator of stroke-reperfusion injury

AUTHOR(S)
Chou, Wen-Hal; Choi, Doo-Sup; Zhang, Hong; Mu, Dezhi; Mcmahon, Tom; Kharazia, Viktor N.; Lowell, Clifford A.; Ferriero, Donna M.; Messing, Robert O.; Chou, Wen-Hai
PUB. DATE
July 2004
SOURCE
Journal of Clinical Investigation;Jul2004, Vol. 114 Issue 1, p49
SOURCE TYPE
Academic Journal
DOC. TYPE
journal article
ABSTRACT
Thrombolysis is widely used to intervene in acute ischemic stroke, but reestablishment of circulation may paradoxically initiate a reperfusion injury. Here we describe studies with mice lacking protein kinase Cdelta (PKCdelta) showing that absence of this enzyme markedly reduces reperfusion injury following transient ischemia. This was associated with reduced infiltration of peripheral blood neutrophils into infarcted tissue and with impaired neutrophil adhesion, migration, respiratory burst, and degranulation in vitro. Total body irradiation followed by transplantation with bone marrow from PKCdelta-null mice donors reduced infarct size and improved neurological outcome in WT mice, whereas marrow transplantation from WT donors increased infarction and worsened neurological scores in PKCdelta-null mice. These results indicate an important role for neutrophil PKCdelta in reperfusion injury and strongly suggest that PKCdelta inhibitors could prove useful in the treatment of stroke.
ACCESSION #
13671915

 

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