Memory consolidation drives the enhancement of remote cocaine memory via prefrontal circuit.
Mol Psychiatry
; 29(3): 730-741, 2024 03.
Article
in En
| MEDLINE
| ID: mdl-38221548
ABSTRACT
Remote memory usually decreases over time, whereas remote drug-cue associated memory exhibits enhancement, increasing the risk of relapse during abstinence. Memory system consolidation is a prerequisite for remote memory formation, but neurobiological underpinnings of the role of consolidation in the enhancement of remote drug memory are unclear. Here, we found that remote cocaine-cue associated memory was enhanced in rats that underwent self-administration training, together with a progressive increase in the response of prelimbic cortex (PrL) CaMKII neurons to cues. System consolidation was required for the enhancement of remote cocaine memory through PrL CaMKII neurons during the early period post-training. Furthermore, dendritic spine maturation in the PrL relied on the basolateral amygdala (BLA) input during the early period of consolidation, contributing to remote memory enhancement. These findings indicate that memory consolidation drives the enhancement of remote cocaine memory through a time-dependent increase in activity and maturation of PrL CaMKII neurons receiving a sustained BLA input.
Full text:
1
Database:
MEDLINE
Main subject:
Prefrontal Cortex
/
Cocaine
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Basolateral Nuclear Complex
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Memory Consolidation
/
Neurons
Limits:
Animals
Language:
En
Journal:
Mol Psychiatry
Journal subject:
BIOLOGIA MOLECULAR
/
PSIQUIATRIA
Year:
2024
Type:
Article
Affiliation country:
China