Tyrosine phosphorylation is increased in the rat hippocampus during the status epilepticus induced by pilocarpine

Tyrosine phosphorylation is increased in the rat hippocampus during the status epilepticus induced by pilocarpine

Autor Funke, M. G. Google Scholar
Amado, D. Google Scholar
Cavalheiro, E. A. Google Scholar
Naffah-Mazzacoratti, M. G. Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo Phosphorylation of tyrosine residue in proteins is an important modulatory process for membrane transduction and cell signaling and for several cellular functions. the concentration and distribution of phosphotyrosine proteins were analyzed in the hippocampi of rats in the model of epilepsy induced by pilocarpine using Western blotting and immunohistochemistry. the concentration of several phosphotyrosine proteins increased during status epilepticus, During the seizure-free period and the chronic period of this epilepsy model, the hippocampi of rats did not exhibit changes in the expression of these proteins. Immunohistochemistry showed an increased immunoreactivity throughout the hippocampal formation of rats 1 h after states epilepticus that was acutely induced by pilocarpine, Animals killed after 3 h of states epilepticus showed an increased expression of phosphotyrosine in the hippocampal hilus and CA3 regions. After 5 h of states epilepticus, phosphotyrosine immunoreactivity persisted only in the CA3 region. After 12 h of status epileptices, the hippocampal formation exhibited a normal phosphotyrosine immunostaining, showing that the increased expression of these proteins is related to the acute phase and that several intracellular events could undergo modifications during the status epilepticus induced by pilocarpine, (C) 1998 Elsevier Science Inc.
Palavra-chave tyrosine phosphoprotein
epilepsy
pilocarpine
Idioma Inglês
Data de publicação 1998-09-01
Publicado em Brain Research Bulletin. Oxford: Pergamon-Elsevier B.V., v. 47, n. 1, p. 87-93, 1998.
ISSN 0361-9230 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 87-93
Fonte http://dx.doi.org/10.1016/S0361-9230(98)00060-4
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000076043400011
Endereço permanente http://repositorio.unifesp.br/handle/11600/25953

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