Unknown

Dataset Information

0

The contribution of mannose binding lectin to reperfusion injury after ischemic stroke.


ABSTRACT: After complement system (CS) activation, the sequential production of complement products increases cell injury and death through opsonophagocytosis, cytolysis, adaptive, and inflammatory cell responses. These responses potentiate cerebral ischemia-reperfusion (IR) injury after ischemic stroke and reperfusion. Activation of the CS via mannose binding lectin (MBL)-initiated lectin pathway is known to increase tissue damage in response to IR in muscle, myocardium and intestine tissue. In contrast, the contribution of this pathway to cerebral IR injury, a neutrophil-mediated event, is less clear. Therefore, we investigated the potential protective role of MBL deficiency in neutrophil-mediated cerebral injury after IR. Using an intraluminal filament method, neutrophil activation and cerebral injury were compared between MBL-deficient and wild type C57Bl/6 mice subjected to 60 minutes of MCA ischemia and reperfusion. Systemic neutrophil activation was not decreased in MBL-deficient animals after IR. In MBL-deficient animals, cerebral injury was significantly decreased only in the striatum (p < 0.05). Despite MBL deficiency, C3 depositions were evident in the injured hemisphere during reperfusion. These results indicate that while MBL deficiency results in a modest protection of a sub-cortical brain region during IR, redundant complement pathway activation may overwhelm further beneficial effects of MBL deficiency during reperfusion.

SUBMITTER: Morrison H 

PROVIDER: S-EPMC3512100 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature

altmetric image

Publications

The contribution of mannose binding lectin to reperfusion injury after ischemic stroke.

Morrison Helena H   Frye Jennifer J   Davis-Gorman Grace G   Funk Janet J   McDonagh Paul P   Stahl Gregory G   Ritter Leslie L  

Current neurovascular research 20110201 1


After complement system (CS) activation, the sequential production of complement products increases cell injury and death through opsonophagocytosis, cytolysis, adaptive, and inflammatory cell responses. These responses potentiate cerebral ischemia-reperfusion (IR) injury after ischemic stroke and reperfusion. Activation of the CS via mannose binding lectin (MBL)-initiated lectin pathway is known to increase tissue damage in response to IR in muscle, myocardium and intestine tissue. In contrast,  ...[more]

Similar Datasets

| S-EPMC7052250 | biostudies-literature
| S-EPMC7798300 | biostudies-literature
| S-EPMC7691595 | biostudies-literature
| S-EPMC7370363 | biostudies-literature
| S-EPMC4902298 | biostudies-literature
| S-EPMC6896860 | biostudies-literature
| S-EPMC7107301 | biostudies-literature
| S-EPMC4940739 | biostudies-literature
| S-EPMC4305178 | biostudies-literature
| S-EPMC7185849 | biostudies-literature