Neuroprotective effects of erythropoietin in the rat hippocampus after pilocarpine-induced status epilepticus

Détails

ID Serval
serval:BIB_955819A23B83
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Neuroprotective effects of erythropoietin in the rat hippocampus after pilocarpine-induced status epilepticus
Périodique
Neurobiol Dis
Auteur⸱e⸱s
Nadam J., Navarro F., Sanchez P., Moulin C., Georges B., Laglaine A., Pequignot J. M., Morales A., Ryvlin P., Bezin L.
ISSN
0969-9961 (Print)
ISSN-L
0969-9961
Statut éditorial
Publié
Date de publication
02/2007
Volume
25
Numéro
2
Pages
412-26
Langue
anglais
Notes
Nadam, Jeremie
Navarro, Fabrice
Sanchez, Pascal
Moulin, Colette
Georges, Beatrice
Laglaine, Ael
Pequignot, Jean-Marc
Morales, Anne
Ryvlin, Philippe
Bezin, Laurent
eng
Research Support, Non-U.S. Gov't
Neurobiol Dis. 2007 Feb;25(2):412-26. doi: 10.1016/j.nbd.2006.10.009. Epub 2006 Dec 12.
Résumé
Neuroprotective functions of erythropoietin (Epo) are thought to involve a heteroreceptor composed of both Epo receptor (Epo-R) and common beta chain (betac). Here, we measured the response of hippocampal Epo system components (Epo, Epo-R and betac) during neurodegenerative processes following pilocarpine-induced status epilepticus (SE), and examined whether recombinant human Epo (rHuEpo) could support neuronal survival. We evidence that Epo is induced in astroglia following SE, in particular within areas displaying delayed neuronal death. In addition, we demonstrate for the first time that rHuEpo reduces considerably hippocampal neurodegeneration following SE. rHuEpo may thus supplement astroglial induction of Epo to promote enhanced hippocampal neuronal survival following SE. We also show that Epo-R is expressed by neurons and astrocytes mainly, while betac is barely detectable in basal conditions and induced in reactive microglia exclusively following SE. Altogether, our results suggest that Epo/rHuEpo exerts neuroprotection, through Epo-R signaling and independently of betac, and, therefore, may be anti-epileptogenic.
Mots-clé
Animals, Anticonvulsants/pharmacology, Astrocytes/drug effects/metabolism, Cell Survival/drug effects/physiology, Convulsants/antagonists & inhibitors, Erythropoietin/*pharmacology, Hippocampus/*drug effects/metabolism/physiopathology, Macromolecular Substances/metabolism, Male, Muscarinic Agonists/pharmacology, Neurons/drug effects/metabolism, Neuroprotective Agents/*pharmacology, Pilocarpine/antagonists & inhibitors/toxicity, Protein Subunits/drug effects/metabolism, Rats, Rats, Sprague-Dawley, Receptors, Erythropoietin/agonists/metabolism, Signal Transduction/drug effects/physiology, Status Epilepticus/chemically induced/*drug therapy/physiopathology
Pubmed
Création de la notice
29/11/2018 13:37
Dernière modification de la notice
20/08/2019 15:57
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