Summary
The aim of this study was to investigate the time course and the correlation of glial fibrillary acidic protein (GFAP), protein S-100B, and neuron specific enolase (NSE) serum levels to the severity of traumatic brain injury in rats. Male Wistar rats (n = 65 S-100B, NSE group and n = 55 GFAP group) underwent a severe cortical impact injury (100PSI, 2 mm deformation). Blood samples were drawn directly after trauma, 1 h, 6 h, 12 h, 24 h, and 48 h post trauma as well as in sham operated animals directly after craniotomy, after 6 h and 48 h. Serum levels at different severities were estimated in 20 rats (45PSI, 75PSI, 2 mm deformation). We found a time-dependent release of NSE and GFAP into serum after trauma. The highest NSE values were detected six hours after trauma (31.5 µg/1, mean, p < 0.0001), the highest GFAP levels were measured one hour after trauma (0.079 ug/1, mean, p < 0.0014). Additionally we found a close relationship between NSE serum levels and the severity of traumatic brain injury (45PSI = 12.7 fig/1, 75PSI = 16.17 µg/1, 100PSI = 28.45 µg/1, p < 0.05). S-100B serum levels showed an increase (0.92 µg/1, p < 0.005) but no time-dependant release. S-100B and GFAP showed no relationship to trauma severity. Serum levels of GFAP, S-100B and NSE are significantly elevated in the early phase after experimental traumatic brain injury. In this experimental model of cortical impact injury only NSE, but not GFAP and S-100B serum levels are time-dependantly correlated with the severity of cortical impact.
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© 2002 Springer-Verlag
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Woertgen, C., Rothoerl, R.D., Wiesmann, M., Missler, U., Brawanski, A. (2002). Glial and Neuronal Serum Markers after Controlled Cortical Impact Injury in the Rat. In: Czosnyka, M., Pickard, J.D., Kirkpatrick, P.J., Smielewski, P., Hutchinson, P. (eds) Intracranial Pressure and Brain Biochemical Monitoring. Acta Neurochirurgica Supplements, vol 81. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6738-0_53
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DOI: https://doi.org/10.1007/978-3-7091-6738-0_53
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