Effect of postictal process in motor deficit and monoaminergic concentration in hippocampus, cerebellum, and cortex
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Resumen
Objetivo. Evaluar la manera en que la concentración de 5-HT, NA y DA en el hipocampo, el cerebelo y la corteza influye en el déficit motor durante la etapa postictal.
Método. Se utilizaron 18 ratas macho Wistar (300 g), divididas en dos grupos: control (n = 9, solución salina) y experimental (n = 9, PTZ). Se registraron las sacudidas mioclónicas y se evaluó el comportamiento motor durante tres horas después de la inyección de PTZ (90 mg/kg). Se extrajeron la corteza, el cerebelo y el hipocampo de cada rata para determinar la concentración de 5-HT, DA y NA mediante cromatografía líquida de alta resolución.
Resultados. La administración de PTZ indujo un aumento significativo en los niveles totales de 5-HT y DA en el hipocampo y la corteza; en el cerebelo hubo un aumento significativo en la concentración de 5-HT y NA. Se encontró una diferencia significativa entre el grupo experimental y control con respecto a las sacudidas mioclónicas; asimismo, los animales del grupo experimental mostraron un marcado déficit motor.
Discusión y conclusión. La 5-HT modula la concentración de otras monoaminas involucradas directamente en aspectos motores tal como NA y DA en el hipocampo, el cerebelo y la corteza durante el proceso postictal.
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