Effects of 5HT1A Activation on Depression Profile Following 5-HT Depletion in Rats Lacking Social Attachment Since Weanling
Psychiatry Investigation
;
: 1000-1006, 2018.
Article
Dans Anglais
| WPRIM
| ID: wpr-717817
ABSTRACT
OBJECTIVE:
Post weanling isolation-reared (IR) rats are featured with depressive phenotype, yet its mechanism is not clearly defined particularly in terms of the involvement of central 5-HT1A receptors. The present study aims to examine the effects of 5HT1A activation on forced swim test (FST) in IR rats following 5-HT depletion.METHODS:
Social control (SOC) and IR rats received an intracerebraoventricular (ICV) injection of 5-HT depletion agent, 5,7-DHT. 14 days after the surgery, rats were assessed their performance in FST with or without the challenge with a 5-HT1A agonist, 8-OH-DPAT. Rats were then sacrificed for analyzing their 5-HT tissue levels and the expressions of their 5-HA1A receptors in prefrontal cortex (PFC), hippocampus (HPX), and amygdala (AMY).RESULTS:
5,7-DHT decreased the tissue concentration of 5-HT in both IR and SOC rats. IR rats were more immobile and less sensitive to the lesion-induced immobility, however this effect was reversed by acute challenge of 8-OH-DPAT. 5,7-DHT lesion increased the expression of PFC 5-HT1A receptors.CONCLUSION:
The integrity of central 5-HT system is developmentally crucial for the 5-HT1A-relevant depression profile in rats of social isolation.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Phénotype
/
Contrôle social formel
/
Isolement social
/
Sérotonine
/
7-Dipropylamino-5,6,7,8-tétrahydro-1-naphtol
/
Cortex préfrontal
/
Récepteur de la sérotonine de type 5-HT1A
/
Dépression
/
Agonistes des récepteurs 5-HT1 de la sérotonine
/
Hippocampe
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
Psychiatry Investigation
Année:
2018
Type:
Article
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