The role of a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid-type receptor modulators in object recognition memory reconsolidation
Neuroreport(2022)
Abstract
Objective Numerous studies suggest that the a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid-type (AMPA) receptor appears to play a central role in mediating brain functions, such as learning and memory. Trafficking of this receptor is related to different long-term memory processes. This study explores the role of two AMPA receptor (AMPAR) modulators in object recognition memory (ORM) reconsolidation. Methods First, the effects of immediate administration of each drug after memory reactivation were investigated and compared. Then, this drug's efficient time window and its effects without memory reactivation were investigated. Results Immediate CX546 administration after reactivation did not affect ORM reconsolidation. In contrast, administration of 10-mg/kg NBQX significantly impaired ORM reconsolidation within a 6-h time window. Importantly, the observed effects were not attributed to the exploratory behavior or locomotor activity of mice. Conclusion These findings provide new evidence that the AMPA receptor plays an important role in the reconsolidation phase of ORM.
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Key words
AMPAR,object recognition memory,reactivation,reconsolidation
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