Plasma high-mobility group box 1 levels and prediction of outcome in patients with traumatic brain injury.
BACKGROUND
High-mobility group box 1 (HMGB1), a marker of inflammation, has been associated with poor outcome of critical illness. The present study was undertaken to investigate the plasma HMGB1 concentrations in patients with traumatic brain injury (TBI) and to analyze the correlation of HMGB1 with TBI outcome.


METHODS
We performed an observational, clinical study. Plasma HMGB1 concentration of 106 healthy subjects and 106 patients with severe TBI was measured by ELISA. The correlation with 1-y mortality and unfavorable outcome (Glasgow Outcome Scale score of 1-3) was analyzed.


RESULTS
Thirty-one patients (29.2%) died and 48 patients (45.3%) had an unfavorable outcome at 1 y after TBI. Plasma HMGB1 level was substantially higher in patients than in healthy controls. A multivariate analysis selected plasma HMGB1 level as an independent predictor for 1-y mortality and unfavorable outcome of patients. A receiver operating characteristic curve analysis showed plasma HMGB1 level statistically significantly predicted 1-y mortality and unfavorable outcome. The prognostic value of HMGB1 was similar to that of Glasgow Coma Scale score for 1-y clinical outcomes.


CONCLUSIONS
Plasma HMGB1 concentration emerges as a novel biomarker for predicting 1-y clinical outcomes of TBI.
Central Laboratory, The First Hangzhou Municipal People's Hospital, Nanjing Medical University, 261 Huansha Road, Hangzhou 310006, China.
Ke-Yi
KY
Wang
Guo-Feng
GF
Yu
Zu-Yong
ZY
Zhang
Qiang
Q
Huang
Xiao-Qiao
XQ
Dong
D000328:Adult; D015415:Biomarkers / Q000097:blood; D001930:Brain Injuries / Q000097:blood* / Q000401:mortality* / Q000628:therapy; D016022:Case-Control Studies; D023261:Glasgow Outcome Scale; D024243:HMGB1 Protein / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011237:Predictive Value of Tests; D012372:ROC Curve
D015415:Biomarkers; D024243:HMGB1 Protein