Cellular infiltration in traumatic brain injury.
Khan, Danyal Z
Journal of neuroinflammation
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Alam, A., Thelin, E., Tajsic, T., Khan, D. Z., Khellaf, A., Patani, R., & Helmy, A. (2020). Cellular infiltration in traumatic brain injury.. Journal of neuroinflammation, 17 (1), 328. https://doi.org/10.1186/s12974-020-02005-x
Traumatic brain injury leads to cellular damage which in turn results in the rapid release of damageassociated molecular patterns (DAMPs) that prompt resident cells to release cytokines and chemokines. These in turn rapidly recruit neutrophils, which assist in limiting the spread of injury and removing cellular debris. Microglia continuously survey the CNS (central nervous system) compartment and identify structural abnormalities in neurons contributing to the response. After some days, when neutrophil numbers start to decline, activated microglia and astrocytes assemble at the injury site – segregating injured tissue from healthy tissue and facilitating restorative processes. Monocytes infiltrate the injury site to produce chemokines that recruit astrocytes which, successively extend their processes toward monocytes during the recovery phase. In this fashion, monocytes infiltration serves to help repair the injured brain. Neurons and astrocytes also moderate brain inflammation via downregulation of cytotoxic inflammation. Depending on the severity of the brain injury, T and B cells can also be recruited to the brain pathology sites at later time points.
This work has been supported by the Medical Research Council, UK (MR/R005036/1). AA is supported as Newton International Fellow by the Academy of Medical Sciences and Newton Fund, UK (NF170920). AH is supported by the NIHR Biomedical Research Campus and The Royal College of Surgeons of England. EPT is supported by grants from Svenska Sällskapet för Medicinsk Forskning (SSMF), Hjärnfonden and Region Stockholm ALF. RP holds an MRC Senior Clinical Fellowship [MR/S006591/ 1].
MEDICAL RESEARCH COUNCIL (G0802251)
Royal College of Surgeons of England (2016/2017)
Academy of Medical Sciences (Unknown)
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External DOI: https://doi.org/10.1186/s12974-020-02005-x
This record's URL: https://www.repository.cam.ac.uk/handle/1810/312182
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