Inhibitory role of the zona incerta in the pilocarpine model of epilepsy

Inhibitory role of the zona incerta in the pilocarpine model of epilepsy

Autor Hamani, C. Google Scholar
Sakabe, S. Google Scholar
Bortolotto, Z. A. Google Scholar
Cavalheiro, E. A. Google Scholar
Mello, LEAM Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo Recent experiments have suggested that the zona incerta might be regarded as a highly sensitive structure for seizure induction. This sensitivity has been linked to this structure's abundant expression of cholinergic receptors. Here we have decided to investigate the participation of the GABAergic system of the zona incerta. one of its major neurotransmitters with widespread projections to the neocortex. in the pilocarpine (Pilo) model of epilepsy. Stereotaxic administration of a GABA(A) agonist (muscimol), antagonist (bicuculline) or saline (controls) bilaterally into the zona incerta of adult male Wistar rats was performed 30 min prior to the systemic injection of pilocarpine. Animals were electroencephalographically and behaviorally monitored for seizure activity. Administration of muscimol had a pro-convulsant effect characterised by a higher percentage of animals developing SE with a shorter latency. Conversely, administration of bicuculline had a dose dependent anticonvulsant effect, with no animals displaying SE. Our results contribute to the further characterisation of the regulatory role of the zona incerta in seizure-related phenomena, suggesting that its modulation might be a relevant target for anticonvulsant strategies. (C) 2002 Published by Elsevier Science B.V.
Palavra-chave epilepsy
GABA
subthalamic nucleus
pilocarpine
zona incerta
vagus nerve stimulation
Idioma Inglês
Data de publicação 2002-03-01
Publicado em Epilepsy Research. Amsterdam: Elsevier B.V., v. 49, n. 1, p. 73-80, 2002.
ISSN 0920-1211 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 73-80
Fonte http://dx.doi.org/10.1016/S0920-1211(02)00017-7
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000175469000007
Endereço permanente http://repositorio.unifesp.br/handle/11600/26788

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