Interleukin-8 predicts fatigue at 12 months post-injury in children with traumatic brain injury
Interleukin‐8 predict fatigue in child TBI
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Journal of neurotrauma
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Éditeur
Mary Ann Liebert
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Mots-clés
- Fatigue
- Serum biomarkers
- Children
- Glasgow coma scale
- GCS
- TBI
- Traumatic brain injury
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Résumé
Résumé
Despite many children experiencing fatigue after childhood brain injury, little is known
about the predictors of this complaint. To date, traditional indices of traumatic brain injury
(TBI) severity have not reliably predicted persisting fatigue (up to 3 years post‐injury). This
study aimed to establish if persisting fatigue is predicted by serum biomarker
concentrations in child TBI. We examined if acute serum biomarker expression would
improve prediction models of 12‐month fatigue based on injury severity. Blood samples
were collected from 87 children (1 – 17 years at injury) sustaining mild to severe TBI (GCS
range 3‐15; mean 12.43; classified as mild TBI (n=50, 57%) vs moderate/severe TBI n=37,
43%), and presenting to the Emergency Departments (ED) and Pediatric Intensive Care
Units (PICU) at one of three tertiary pediatric hospitals (Royal Children’s Hospital (RCH);
Hospital for Sick Children (HSC), Toronto St Justine Children’s Hospital (SJH), Montreal). Six
serum biomarker concentrations were measured within 24 hours of injury [interleukin‐6
(IL‐6), interleukin‐8 (IL‐8), soluble vascular cell adhesion molecule (SVCAM), S100 calcium
binding protein B (S100B), neuron specific enolase (NSE), and soluble neural cell adhesion
molecule (sNCAM)]. Fatigue at 12 months post‐injury was measured using the Pediatric
Quality of Life Inventory Multidimensional Fatigue Scale (parent report), classified as
present/absent using previously derived cut‐points. At 12 months post‐injury, 22% of
participants experienced fatigue. A model including interleukin‐8 (IL‐8) was the best serum
biomarker for estimating the probability of children experiencing fatigue at 12 months
post‐injury. IL‐8 also significantly improved predictive models of fatigue based on severity.
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