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Differential Expression of Circulating Inflammatory Proteins Following Sport-Related Traumatic Brain Injury

1
Marker Diagnostics Ltd., The BioHub, Edgbaston, Birmingham B15 2SQ, UK
2
University of Illinois, Chicago, IL 60607, USA
3
Neuroscience & Ophthalmology Research Group, Institute of Inflammation & Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
4
National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital, Edgbaston, Birmingham B15 2TH, UK
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2020, 21(4), 1216; https://doi.org/10.3390/ijms21041216
Received: 9 January 2020 / Revised: 5 February 2020 / Accepted: 7 February 2020 / Published: 12 February 2020
Sport-related traumatic brain injury (TBI) elicits a multifaceted inflammatory response leading to brain injury and morbidity. This response could be a predictive tool for the progression of TBI and to stratify the injury of which mild TBI is most prevalent. Therefore, we examined the differential expression of serum inflammatory markers overtime and identified novel markers in repetitively concussed athletes. Neuropsychological assessment by Wechsler Adult Intelligence Scale (WAIS) and Immediate Post Concussion Assessment and Cognitive Test (ImPACT) was performed on rugby players and serum was taken from healthy, concussed and repetitively concussed athletes. Serum was also obtained <1 week and >1 week after trauma and analyzed for 92 inflammatory protein markers. Fibroblast growth factor 21 (FGF21) and interleukin-7 (IL-7) differentiated repetitively concussed athletes. Macrophage chemotactic protein-1 (MCP-1), tumor necrosis factor superfamily member 14 (TNFSF14) were significantly reduced >1 week and chemokine (C-X3-C motif) ligand 1 (CX3CL1) upregulated <1 week after injury. FGF21 and MCP-1 negatively correlated with symptoms and their severity. We have identified dynamic changes in the inflammatory response overtime and in different classes of concussion correlating with disease progression. This data supports the use of inflammatory biomarkers as predictors of symptom development due to secondary complications of sport-related mTBI. View Full-Text
Keywords: mild traumatic brain injury; concussion; neuroinflammation; FGF21; MCP-1 mild traumatic brain injury; concussion; neuroinflammation; FGF21; MCP-1
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Begum, G.; Reddy, R.; Yakoub, K.M.; Belli, A.; Davies, D.J.; Di Pietro, V. Differential Expression of Circulating Inflammatory Proteins Following Sport-Related Traumatic Brain Injury. Int. J. Mol. Sci. 2020, 21, 1216.

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