Abstract:
:Blast-induced neurotrauma (BINT) is a major medical concern yet its etiology is largely undefined. Complement activation may play a role in the development of secondary injury following traumatic brain injury; however, its role in BINT is still undefined. The present study was designed to characterize the complement system and adaptive immune-inflammatory responses in a rat model of moderate BINT. Anesthetized rats were exposed to a moderate blast (120 kPa) using an air-driven shock tube. Brain tissue injury, systemic and local complement, cerebral edema, inflammatory cell infiltration, and pro-inflammatory cytokine production were measured at 0.5, 3, 48, 72, 120, and 168 h. Injury to brain tissue was evaluated by histological evaluation. Systemic complement was measured via ELSIA. The remaining measurements were determined by immunohistoflourescent staining. Moderate blast triggers moderate brain injuries, elevated levels of local brain C3/C5b-9 and systemic C5b-9, increased leukocyte infiltration, unregulated tumor necrosis factor alpha (TNFα), and aquaporin-4 in rat brain cortex at 3- and 48-hour post blast. Early immune-inflammatory response to BINT involves complement and TNFα, which correlates with hippocampus and cerebral cortex damage. Complement and TNFα activation may be a novel therapeutic target for reducing the damaging effects of BINT inflammation.
journal_name
J Neurol Scijournal_title
Journal of the neurological sciencesauthors
Dalle Lucca JJ,Chavko M,Dubick MA,Adeeb S,Falabella MJ,Slack JL,McCarron R,Li Ydoi
10.1016/j.jns.2012.02.002subject
Has Abstractpub_date
2012-07-15 00:00:00pages
146-54issue
1-2eissn
0022-510Xissn
1878-5883pii
S0022-510X(12)00059-7journal_volume
318pub_type
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