RESUMO
Levels of antibodies AB (AB) to S100B and S100B protein were studied in the blood serum of children with different severity and outcomes of traumatic brain injury (TBI) from the 1st to 15-75th days after TBI. Severity and outcomes were assessed using the Glasgow Coma Scale (GCS). Patients were stratified by outcomes into the following groups: complete recovery (group 1), moderate disability (group 2), high disability (group 3), vegetative state (group 4) and fatal outcome (group 5). In patients of groups 1-3, the changes of S100B in the blood serum didn't depend on the severity of brain's damage; the significant increase of S100B protein levels in the 1st day was accompanied by the decrease to the normal range in the following 2-3 days. On the contrary, the levels of nAB in these groups increased starting from 3-5 days corresponding to the severity of brain's damage. The development of vegetative state was accompanied by low S100B and high AB to S100B levels in the blood serum. The maximal level of S100B protein and increased levels of AB were observed in patients with fatal outcome. In most patients with combined TBI, the levels of both parameters were higher compared to those with separate TBI.
Assuntos
Autoanticorpos/sangue , Dano Encefálico Crônico/diagnóstico , Lesões Encefálicas/diagnóstico , Fatores de Crescimento Neural/sangue , Proteínas S100/sangue , Biomarcadores/sangue , Dano Encefálico Crônico/sangue , Lesões Encefálicas/sangue , Criança , Escala de Coma de Glasgow , Humanos , Fatores de Crescimento Neural/imunologia , Subunidade beta da Proteína Ligante de Cálcio S100 , Proteínas S100/imunologiaRESUMO
Autoantibodies (AB) to glutamate receptors of AMPA (Glur1) and NMDA (NR2A) types and nitric oxide metabolites, nitrates and nitrites (NOx), were studied in the blood serum of children with brain trauma of different severity. The level of both AB types increased from the 1st to the 10th day after trauma. The level of NMDA (NR2A) AB was higher comparing to AMPA (Glur1). Patients with mild brain trauma, scoring 14-15 on the Coma Glasgow Scale, had the highest AB concentration while patients with severe brain trauma (scores <9), had the lower level of NMDA (NR2A) AB. The lowest level of AB and the highest level of NOx in the blood serum were found in a group of children with the fatal outcome of severe brain trauma. The many-fold increase of NOx concentration in this group points to marked hypoxia after severe brain trauma.