Abbreviated environmental enrichment enhances neurobehavioral recovery comparably to continuous exposure after traumatic brain injury.
Neurorehabil Neural Repair
; 25(4): 343-50, 2011 May.
Article
em En
| MEDLINE
| ID: mdl-21186330
ABSTRACT
BACKGROUND:
Environmental enrichment (EE) is a complex living milieu that has been shown to enhance functional recovery versus standard (STD) housing after experimental traumatic brain injury (TBI) and therefore may be considered a rodent correlate of rehabilitation. However, the typical EE paradigm consists of continuous exposure to enrichment after TBI, which is inconsistent with the limited time frame in clinical rehabilitation.OBJECTIVE:
To determine whether abbreviated EE (ie, rehabilitation-relevant dose response) confers benefits similar to typical EE after TBI.METHODS:
Adult male rats received either a controlled cortical impact (2.8 mm depth at 4 m/s) or sham injury and were then randomly assigned to TBI + EE, TBI + EE (2 hours), TBI + EE (4 hours), TBI + EE (6 hours), TBI + STD, and respective sham controls. Motor (beam balance/beam walk) and cognitive (Morris water maze) performance was assessed on postoperative days 1 to 5 and 14 to 19, respectively.RESULTS:
The TBI + EE (2 hours) and TBI + EE (4 hours) groups were not statistically different from the TBI + STD group in any behavioral assessment. In contrast, the TBI + EE (6 hours) group exhibited significant enhancement of motor and cognitive performance when compared with the TBI + STD group, as well as the TBI + EE (2 hours) and TBI + EE (4 hours) groups (P < .003), and did not differ from the TBI + EE (typical) group.CONCLUSIONS:
These data demonstrate that abbreviated EE (6 hours) produces motor and cognitive benefits similar to continuous EE after TBI and thus may be considered a dose-relevant rehabilitation paradigm.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Lesões Encefálicas
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Modalidades de Fisioterapia
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Transtornos Cognitivos
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Transtornos Neurológicos da Marcha
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Ambiente Controlado
Tipo de estudo:
Etiology_studies
/
Prognostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article