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Artículo

3-Mercaptopropionic acid-induced repetitive seizures increase GluN2A expression in rat hippocampus: a potential neuroprotective role of cyclopentyladenosine

Gori, María BelénIcon ; Girardi, Elena SilviaIcon
Fecha de publicación: 08/2013
Editorial: Springer
Revista: Cellular And Molecular Neurobiology.
ISSN: 0272-4340
e-ISSN: 1573-6830
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Neurociencias

Resumen

The N-methyl-d-aspartate receptor (NMDAR) is involved in synaptic plasticity, learning, memory, and neurological diseases like epilepsy and it is the major mediator of excitotoxicity. Functional NMDARs in the mature brain are heteromeric complexes composed of different subunits: GluN1 and GluN2. There are four different GluN2 subunits (A–D) and each of them critically determines the pharmacological and electrophysiological properties of NMDARs. GluN1 is ubiquitously expressed in the central nervous system while the highest GluN2A expression is in the hippocampus. Adenosine, an endogenous anticonvulsant, is a neuromodulator with a critical role in the regulation of neuronal activity, mediating its effect on specific receptors, among which adenosine A1 receptor is highly expressed in the hippocampus. In the present work hippocampal GluN2A expression after the convulsant drug 3-mercaptopropionic acid (MP) induced seizures and the effect of cyclopentyladenosine (CPA) given alone or prior to MP (CPA + MP) in an acute or repetitive experimental model was studied. CPA administered to rats for one or 4 days increases seizure threshold induced by MP. After one administration of MP, no significant difference in GluN2A expression was observed in CPA and CPA + MP by Western blot, although immunohistochemistry revealed an increase in CA2/3 area. However, repetitive MP administration during 4 days showed a significant increase of GluN2A expression, and the repetitive administration of CPA 30 min prior to MP caused a significant decrease of GluN2A expression with respect to MP treatment, returning to control levels. These results show that GluN2A subunit is involved in repetitive MP-induced seizures, while CPA administration displays a protective effect against it.
Palabras clave: Nmdar , Glun2a , Hippocampus , Epilepsy , Cyclopentyladenosine , 3-Mercaptopropionic Acid
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/17003
URL: https://link.springer.com/article/10.1007%2Fs10571-013-9947-2
DOI: http://dx.doi.org/10.1007/s10571-013-9947-2
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Articulos(IBCN)
Articulos de INST.DE BIOLO.CEL.Y NEURCS."PROF.E.DE ROBERTIS"
Citación
Gori, María Belén; Girardi, Elena Silvia; 3-Mercaptopropionic acid-induced repetitive seizures increase GluN2A expression in rat hippocampus: a potential neuroprotective role of cyclopentyladenosine; Springer; Cellular And Molecular Neurobiology.; 33; 6; 8-2013; 803-813
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