®®®® SIIA Público

Título del libro: Pharmacoresistance In Epilepsy: From Genes And Molecules To Promising Therapies
Título del capítulo: Abnormalities of GABA system and human pharmacoresistant epilepsy

Autores UNAM:
LUISA LILIA ROCHA ARRIETA; SANDRA ADELA OROZCO SUAREZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2013
Palabras clave:

Animal models; Antiepileptic drugs; GABA -receptors; GABA neurotransmission; GABA subunits; Human data; Pharmacoresistant epilepsy


Resumen:

Despite the availability of various newly developed antiepileptic drugs (AEDs), pharmacoresistance remains a major challenge in epilepsy management. Unraveling the mechanisms underlying AED resistance has been the focus of intense efforts, in order to develop new rationally designed therapies for as yet refractory epilepsies. Based on experimental and clinical studies, one of the major neurobiological theories that has been put forward is the target hypothesis, which suggests that AEDs are not effective because of target alterations in the epileptogenic brain. Several studies have shown that seizure activity results in altered expression of gamma-aminobutyric acid (GABA) components such as GABA transporters (GATs) and GABA receptors. Indeed, changes in the composition of subunits expression appear to affect the functioning of GABAergic neurotransmission. Here, we review the current literature on epilepsy-associated changes in the GABA system conducted in experimental models and observations made in patients with treatment-resistant epilepsy, as well as genetic abnormalities in the GABA system in refractory human epilepsy. © 2013 Springer Science+Business Media, LLC. All rights are reserved.


Entidades citadas de la UNAM: