Effects of RFamide-related peptide-1 (RFRP-1) microinjections into the central nucleus of amygdala on passive avoidance learning in rats.
Neuropeptides
; 62: 81-86, 2017 Apr.
Article
em En
| MEDLINE
| ID: mdl-27993374
ABSTRACT
The amygdaloid body (AMY) plays an important role in memory, learning and reward-related processes. RFRP-1 immunoreactive fibers and NPFF receptors were identified in the AMY, and previously we verified that RFRP-1 infused into the central nucleus of AMY (CeA) induced place preference. The aim of the present study was to examine the possible effects of RFRP-1 in the CeA on passive avoidance learning. Male Wistar rats were examined in two-compartment passive avoidance paradigm. Animals were shocked with 0.5mA current and subsequently were microinjected bilaterally with 50ng or 100ng RFRP-1 in volume of 0.4µl, or 20ng NPFF receptor antagonist RF9 (ANT) alone, or antagonist 15min before 50ng RFRP-1 treatments into the CeA. Fifty nanogram dose of RFRP-1 significantly increased the step-through latency time, the 100ng RFRP-1 and the ANT alone were ineffective. The effect of 50ng RFRP-1 was eliminated by the ANT pretreatment. Our results suggest that intraamygdaloid RFRP-1 enhances learning processes and memory in aversive situations and this effect can specifically be prevented by ANT pretreatment.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aprendizagem da Esquiva
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Neuropeptídeos
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Núcleo Central da Amígdala
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Memória
Limite:
Animals
Idioma:
En
Revista:
Neuropeptides
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Hungria
País de publicação:
HOLANDA
/
HOLLAND
/
NETHERLANDS
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NL
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PAISES BAJOS
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THE NETHERLANDS