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Role of CCL2 (MCP-1) in traumatic brain injury (TBI): evidence from severe TBI patients and CCL2/ mice
Citation
Semple, BD and Bye, N and Rancan, M and Ziebell, JM and Morganti-Kossmann, MC, Role of CCL2 (MCP-1) in traumatic brain injury (TBI): evidence from severe TBI patients and CCL2/ mice, Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 30, (4) pp. 769-82. ISSN 0271-678X (2010) [Refereed Article]
Copyright Statement
Copyright 2010 ISCBFM
DOI: doi:10.1038/jcbfm.2009.262
Abstract
Cerebral inflammation involves molecular cascades contributing to progressive damage after traumatic brain injury (TBI). The chemokine CC ligand-2 (CCL2) (formerly monocyte chemoattractant protein-1, MCP-1) is implicated in macrophage recruitment into damaged parenchyma after TBI. This study analyzed the presence of CCL2 in human TBI, and further investigated the role of CCL2 in physiological and cellular mechanisms of secondary brain damage after TBI. Sustained elevation of CCL2 was detected in the cerebrospinal fluid (CSF) of severe TBI patients for 10 days after trauma, and in cortical homogenates of C57Bl/6 mice, peaking at 4 to 12 h after closed head injury (CHI). Neurological outcome, lesion volume, macrophage/microglia infiltration, astrogliosis, and the cerebral cytokine network were thus examined in CCL2-deficient (-/-) mice subjected to CHI. We found that CCL2-/- mice showed altered production of multiple cytokines acutely (2 to 24 h); however, this did not affect lesion size or cell death within the first week after CHI. In contrast, by 2 and 4 weeks, a delayed reduction in lesion volume, macrophage accumulation, and astrogliosis were observed in the injured cortex and ipsilateral thalamus of CCL2-/- mice, corresponding to improved functional recovery as compared with wild-type mice after CHI. Our findings confirm the significant role of CCL2 in mediating post-traumatic secondary brain damage.
Item Details
Item Type: | Refereed Article |
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Keywords: | brain trauma, chemokines, inflammation, macrophages |
Research Division: | Biomedical and Clinical Sciences |
Research Group: | Neurosciences |
Research Field: | Neurosciences not elsewhere classified |
Objective Division: | Health |
Objective Group: | Clinical health |
Objective Field: | Clinical health not elsewhere classified |
UTAS Author: | Ziebell, JM (Dr Jenna Ziebell) |
ID Code: | 101706 |
Year Published: | 2010 |
Web of Science® Times Cited: | 237 |
Deposited By: | Wicking Dementia Research and Education Centre |
Deposited On: | 2015-07-02 |
Last Modified: | 2015-09-28 |
Downloads: | 0 |
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