title: [Dynamic changes of serum interleukin-6 and interleukin-8 in patients with acute traumatic brain injury and the clinical significance].
abstract: OBJECTIVE
  To explore the dynamic changes of serum interleukin-6 (IL-6) and IL-8 in acute traumatic brain injury (TBI) and their correlations to the severity of brain injury and the condition of the patients.
  
  
  METHODS
  Thirty-four patients with acute TBI were divided into two groups according to the Glasgow Coma Scale (GCS) score, clinical manifestations and the imaging data, namely patients with GCS score < or = 8 and those with GCS score between 9 and 12. Radioimmunoassay was employed to determine the serum levels of IL-6 and IL-8 at 6 different time points within 15 days after the injury in the two groups.
  
  
  RESULTS
  The serum IL-6 reached the peak level on the second day after the injury in patients with GCS score < or = 8 and on the 7th day in patients with GCS score of 9-12, showing significant differences in IL-6 variations between the two groups (P=0.046). The peak serum level of IL-8 occurred on the 7th day in patients with GCS score < or = 8 and on the 3rd day in patients with GCS score of 9-12, also showing significant differences (P=0.045). The peak level of IL-6 on the second day after the injury was significantly higher than the peak level of IL-8 that occurred on the 7th day, demonstrating significant differences in the variations of IL-6 and IL-8 after the injury (P=0.000).
  
  
  CONCLUSIONS
  The changes of serum IL-6 and IL-8 levels show positive correlations to the severity of the condition of the patients sustaining TBI. IL-6 variation is more obvious than that of IL-8 without intimate correlations between them. Clinically, serum IL-6 level can be more informative than serum IL-8 level in evaluating the changes of the condition of the TBI patients in early stage following the injury.
authors.affiliation: Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. hlm791011@tom.com
authors.forename: Li-ming
authors.initials: LM
authors.lastname: He
authors.forename: Bing-hui
authors.initials: BH
authors.lastname: Qiu
authors.forename: Song-tao
authors.initials: ST
authors.lastname: Qi
authors.forename: Lu-xiong
authors.initials: LX
authors.lastname: Fang
authors.forename: Xiao-jun
authors.initials: XJ
authors.lastname: Liu
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D001930:Brain Injuries / Q000097:blood*; D002648:Child; D005260:Female; D015600:Glasgow Coma Scale; D006801:Humans; D015850:Interleukin-6 / Q000097:blood*; D016209:Interleukin-8 / Q000097:blood*; D008297:Male; D008875:Middle Aged; D015599:Trauma Severity Indices; D055815:Young Adult
chemical_list: C508606:CXCL8 protein, human; C508600:IL6 protein, human; D015850:Interleukin-6; D016209:Interleukin-8