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This process has become the subject of many studies due to its importance in memory processing, maintenance and updating, and its potential role as a therapeutical target in fear memory disorders such as phobias and post\u2010traumatic stress disorder. In this sense, understanding the underlying mechanisms of memory reconsolidation is paramount in developing potential treatments for such memory dysfunctions. In the present work, we studied the interaction between two key neural structures involved in the reconsolidation process: the basolateral amygdala complex of the amygdala (BLA) and the dorsal hippocampus (DH). Our results show changes in the structural plasticity of the CA1 region of the DH in the form of dendritic spines density changes associated with the destabilization\/reconsolidation process. Furthermore, we demonstrate a modulatory role of BLA over such structural plasticity by infusing different drugs such as ifenprodil, a destabilization blocker, and propranolol, a reconsolidation disruptor, in this brain structure. Altogether our work shows a particular temporal dynamic in the CA1 region of DH that accompanies the destabilization\/reconsolidation process and aims to provide new information on the underlying mechanisms of this process that potentially contributes for a better understanding of memory storage, maintenance, expression and updating, and its potential medical applications.<\/jats:p>","DOI":"10.1002\/hipo.23374","type":"journal-article","created":{"date-parts":[[2021,7,1]],"date-time":"2021-07-01T07:26:52Z","timestamp":1625124412000},"page":"1080-1091","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Temporal dynamic of the hippocampal structural plasticity associated with the fear memory destabilization\/reconsolidation process"],"prefix":"10.1002","volume":"31","author":[{"given":"Ramiro","family":"Comas Mutis","sequence":"first","affiliation":[{"name":"IFEC\u2010CONICET, Departamento de Farmacolog\u00eda, Facultad 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