Citation

Gyorgy AB, Ling GS, Wingo DL, Walker J, Tong LC, Parks S, Januszkiewicz A, Baumann R, Agoston DV. J. Neurotrauma 2011; 28(6): 1121-1126.

Affiliation

Uniformed Services University of the Health Sciences, Anatomy, Physiology and Genetics, 4301 Jones Brideg Rd, Bethesda, Maryland, United States, 20814; agyorgy@usuhs.mil.

Copyright

(Copyright © 2011, Mary Ann Liebert Publishers)

DOI

10.1089/neu.2010.1561

PMID

21428721

Abstract

Neuronal and glial proteins detected in the peripheral circulating blood after injury can reflect the extent of the damage caused by traumatic brain injury (TBI). The temporal pattern of their serum levels can further portend to the severity and to the outcome of the injury. As part of characterizing a large animal model of blast TBI (bTBI), we determined the changes in the serum levels of S100B, neuron specific enolase (NSE), myelin basic protein (MBP), and neurofilament heavy chain (NF-H). Blood samples were obtained prior to injury and at 6, 24, 72 hours, and 2 weeks post-injury from animals with different severities of bTBI; protein levels were determined using Reverse Phase Protein Microarray (RPPA) technology. Serum levels of S100B, MBP, and NF-H but not NSE, showed a time-dependent increase following injury. The detected changes in S100B and MBP levels showed no correlation with the severity of the injury. However, serum NF-H levels increased in a unique, rapid manner peaking at 6 hrs post-injury only in animals exposed to severe blast with poor clinical and pathological outcomes. We conclude that the sudden increase in serum NF-H levels following bTBI may be a useful indicator of injury severity. If additional studies verify our findings, the observed early peak of serum NF-H levels can be developed into a useful diagnostic tool for predicting the extent of damage after bTBI.

Language: en