Journal
EXPERIMENTAL NEUROLOGY
Volume 219, Issue 2, Pages 398-403Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.expneurol.2009.07.018
Keywords
Complement cascade; Edema; Hemoglobin; Intracerebral hemorrhage; Mechanism
Categories
Funding
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [R01NS040409] Funding Source: NIH RePORTER
- NINDS NIH HHS [R01 NS040409] Funding Source: Medline
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Intracerebral hemorrhage (ICH) is the second most common and deadliest form of stroke. Currently, no pharmacologic treatment strategies exist for this devastating disease. Following the initial mechanical injury suffered at hemorrhage onset, secondary brain injury proceeds through both direct cellular injury and inflammatory cascades, which trigger infiltration of granulocytes and monocytes, activation of microglia, and disruption of the blood-brain barrier with resulting cerebral edema. The complement cascade has been shown to play a central role in the pathogenesis of secondary injury following ICH, although the specific mechanisms responsible for the proximal activation of complement remain incompletely understood. Cerebral injury following cleavage of complement component 3 (C3) proceeds through parallel but interrelated pathways of anaphylatoxin-mediated inflammation and direct toxicity secondary to membrane attack complex-driven erythrocyte lysis. Complement activation also likely plays an important physiologic role in recovery following ICH. As such, a detailed understanding of the variation in functional effects of complement activation over time is critical to exploiting this target as an exciting translational strategy for intracerebral hemorrhage. (C) 2009 Elsevier Inc. All rights reserved.
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