Laminin peptide ameliorates brain injury by inhibiting leukocyte accumulation in a rat model of transient focal cerebral ischemia.
J Cereb Blood Flow Metab
; 17(6): 605-11, 1997 Jun.
Article
em En
| MEDLINE
| ID: mdl-9236717
ABSTRACT
Postischemic cerebral inflammation has been reported to contribute to ischemic brain damage. During inflammation, constituents of the extracellular matrix such as fibronectin and laminin are recognized by certain integrins or proteoglycans and play an important role in the cell adhesion process. The purpose of this study was to evaluate the efficacy of peptides derived from laminin on leukocyte accumulation, infarct size, and neurological outcome in rats subjected to 1 h of cerebral ischemia and 48 h of reperfusion. Forty-four animals were included in this study transient ischemia without treatment (Group I), treatment with TG-1 peptide (Group II), GD-1 peptide (Group III), and GD-6 peptide (Group IV). Group II showed a significant reduction of the leukocyte accumulation (p < 0.001) and infarct size (p = 0.015) when compared with Group I. The neurological grade of Group II was also significantly better than in Group I at 48 h after reperfusion (p = 0.012). Based on these data, which are the first to explore the therapeutic potential of this peptide in cerebral ischemia, laminin peptide may offer a novel therapeutic approach to allaying injury in ischemic stroke.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fragmentos de Peptídeos
/
Ataque Isquêmico Transitório
/
Laminina
/
Contagem de Leucócitos
Limite:
Animals
Idioma:
En
Revista:
J Cereb Blood Flow Metab
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Estados Unidos