Alarin potentiates ongoing epileptiform activity in rat brain slices: an in vitro electrophysiological study.
Acta Neurobiol Exp (Wars)
; 84(1): 35-42, 2024 Mar 28.
Article
en En
| MEDLINE
| ID: mdl-38587326
ABSTRACT
Alarin is a newly discovered neuropeptide that belongs to the galanin peptide family with a wide range of bioactivity in the nervous system. Its function in the brain's autonomic areas has been studied, and it has been reported that alarin is involved in the regulation of excitability in hypothalamic neurons. Its role in the regulation of excitability in the hippocampus, however, is unknown. In this study, we investigated if alarin induced any synchronous discharges or epileptiform activity, and if it had any effect on already initiated epileptiform discharges. We used thick acute horizontal hippocampal slices obtained from 30 to 35dayold rats. Extracellular field potential recordings were evaluated in the CA1 region of the hippocampus. Our data demonstrated that, alarin application did not result in any epileptiform activity or abnormal discharges. 4aminopyridine was applied to induce epileptiform activity in the slices. We found that alarin increased the frequency of interictallike events and the mean power of local field potentials in the CA1 region of the hippocampus, which was induced by 4aminopyridine. These results demonstrated for the first time that alarin has a modulatory effect on synchronized neuronal discharges and showed the contribution of the neuropeptide alarin to epilepsylike conditions.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Péptido Similar a Galanina
/
Epilepsia
Límite:
Animals
Idioma:
En
Revista:
Acta Neurobiol Exp (Wars)
Año:
2024
Tipo del documento:
Article
País de afiliación:
Turquía
Pais de publicación:
Polonia