Epidermal growth factor increases tissue antioxidant enzyme activities in ethanol-induced gastric injury in rat
J. physiol. biochem
; J. physiol. biochem;62(4): 237-243, dic. 2006.
Article
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| IBECS
| ID: ibc-122985
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Localização: BNCS
ABSTRACT
The aim of the present study is to investigate whether the antioxidant mechanisms are involved in epidermal growth factor (EGF)-mediated protection from ethanol-induced gastric damage. Twenty four female Sprague-Dawley rats were assigned into 3 groups; control (C) group (n=8) was given physiologic saline by gavage; ethanol (E) group (n=8) was given 1 ml of 80% ethanol (v/v) in distilled water by gavage and EGF group (n=8) was given EGF (100 mg/kg-body wt.) intraperitonealy half an hour before the administration of ethanol. The protein carbonyl content was significantly higher in the E group than the C group (p<0.01). On the other hand, EGF decreased the protein carbonyl content in the EGF group (p<0.01). Gastric myeloperoxidase activity increased significantly after the administration of ethanol (p<0.01). The administration of EGF decreased significantly the myeloperoxidase activity (p<0.01). Although ethanol caused a slight decrease in the catalase activity, no statistical significance was observed between groups E and C. The catalase activity increased significantly after EGF treatment (p<0.01). The superoxide dismutase activity decreased significantly in the E group when compared to the C group (p<0.05) while it was found to be increased significantly in the EGF group in comparison with the E group (p<0.01). In summary, the present results indicate that the gastroprotective effect of EGF in the experimental lesions induced by ethanol could be attributed to its property such as to augment the antioxidant enzyme activities (AU)
RESUMEN
Se investiga si los mecanismos antioxidantes están implicados en la protección del factor de crecimiento epidérmico (EGF) sobre el daño gástrico inducido por el alcohol. Veinticuatro ratas hembra se dividieron en tres grupos: las del grupo control (C) recibieron solución salina por vía intragástrica; las del grupo etanol (E) recibieron 1 ml de etanol al 80% (v/v) en agua destilada por la misma vía y a las del grupo EGF se les administró i.p. EGF (100 mg/Kg w.w.) media hora antes del etanol. El contenido en grupos carbonil de las proteínas y la actividad mieloperoxidasa gástrica aumentó significativamente en el grupo E, mientras que disminuyó en el grupo EGF. Aunque el etanol provocó una ligera disminución de la actividad catalasa, no hubo diferencias significativas entre los grupos C y E, pero aumentó por la administración de EGF. La actividad superóxido dismutasa disminuyó en el grupo E respecto del grupo C y resultó incrementada en el grupo EGF respecto del grupo E. En suma, los resultados indican que el efecto gastroprotector del EGF en las lesiones experimentales inducidas por el etanol podrían atribuirse a su efecto estimulador sobre la actividad de enzimas antioxidantes (AU)
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Coleções:
06-national
/
ES
Base de dados:
IBECS
Assunto principal:
Consumo de Bebidas Alcoólicas
/
Fator de Crescimento Epidérmico
/
Antioxidantes
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
J. physiol. biochem
Ano de publicação:
2006
Tipo de documento:
Article