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Published in: Intensive Care Medicine 8/2003

01-08-2003 | Neonatal and Pediatric Intensive Care

Correlation between neurotrophic factor expression and outcome of children with severe traumatic brain injury

Authors: Antonio Chiaretti, Marco Piastra, Giancarlo Polidori, Concezio Di Rocco, Elena Caresta, Alessia Antonelli, Tiziana Amendola, Luigi Aloe

Published in: Intensive Care Medicine | Issue 8/2003

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Abstract

Objectives

We evaluated the neurotrophic factors [nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), glia-derived neurotrophic factor (GDNF)] expression and their association with the severity and outcome of children with traumatic brain injury.

Design

Prospective observational clinical study.

Setting

Pediatric intensive care unit.

Patients

Fourteen children with severe head injury; 12 controls with obstructive hydrocephalus.

Measurement

Cerebrospinal fluid (CSF) and plasma samples were collected 2 h (T1) and 24 h (T2) after head injury. Neurotrophic factor levels were measured using an immuno-enzymatic assay.

Main results

In patients, neurotrophic factor mean levels were significantly different in both CSF and plasma, showing high levels of BDNF compared to NGF and GDNF. Considering T1 and T2 expression, in the CSF the level of NGF increased from 3.5±0.4 pg/ml to 48.2±11.7 pg/ml (p<0.001); BDNF decreased from 4854.0±1303.7 pg/ml to 593.0±114.8 pg/ml (p<0.001), while GDNF did not undergo significant variations. In plasma, no significant changes were observed. Regarding severity and outcome, BDNF levels showed a sharp peak after head injury, but the only significant association was between NGF expression in the CSF and a good outcome versus a poor outcome (p=0.007).

Conclusions

The variations in neurotrophic factor levels reflect an endogenous attempt at neuroprotection against biochemical and molecular changes after traumatic head injury. BDNF represents an early marker of brain injury, while NGF expression in the CSF was indicative of a good outcome and the role of this neurotrophin in the treatment of children with severe head injury may be hypothesized.
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Metadata
Title
Correlation between neurotrophic factor expression and outcome of children with severe traumatic brain injury
Authors
Antonio Chiaretti
Marco Piastra
Giancarlo Polidori
Concezio Di Rocco
Elena Caresta
Alessia Antonelli
Tiziana Amendola
Luigi Aloe
Publication date
01-08-2003
Publisher
Springer-Verlag
Published in
Intensive Care Medicine / Issue 8/2003
Print ISSN: 0342-4642
Electronic ISSN: 1432-1238
DOI
https://doi.org/10.1007/s00134-003-1852-6

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