2026-06-01T11:15:21Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/369222026-02-03T11:37:04Zcom_10630_2254col_10630_20092

Ladrón de Guevara-Miranda, David Moreno Fernandez, Roman Dario Gil Rodríguez, Sara Rosell-Valle, Cristina Estivill-Torrús, Guillermo Serrano, Antonia Pavón, Francisco Javier Rodriguez-de-Fonseca, Fernando Santín-Núñez, Luis Javier Castilla-Ortega, María Estela 2025-01-24T11:34:05Z 2025-01-24T11:34:05Z 2024-01-24 Ladrón de Guevara-Miranda, D., Moreno-Fernández, R. D., Gil-Rodríguez, S., Rosell-Valle, C., Estivill-Torrús, G., Serrano, A., Pavón, F. J., Rodríguez de Fonseca, F., Santín, L. J., & Castilla-Ortega, E. (2019). Lysophosphatidic acid-induced increase in adult hippocampal neurogenesis facilitates the forgetting of cocaine-contextual memory. Addiction biology, 24(3), 458–470. https://doi.org/10.1111/adb.12612 https://hdl.handle.net/10630/36922 10.24310/riuma.36922 Erasing memories of cocaine-stimuli associations might have important clinical implications for addiction therapy. Stimulating hippocampal plasticity by enhancing adult hippocampal neurogenesis (AHN) is a promising strategy because the addition of new neurons may not only facilitate new learning but also modify previous connections and weaken retrograde memories. To investigate whether increasing AHN prompted the forgetting of previous contextual cocaine associations, mice trained in a cocaine-induced conditioned place preference (CPP) paradigm were administered chronic intracerebroventricular infusions of lysophosphatidic acid (LPA, an endogenous lysophospholipid with pro-neurogenic actions), ki16425 (an LPA1/3 receptor antagonist) or a vehicle solution, and they were tested 23 days later for CPP retention and extinction. The results of immunohistochemical experiments showed that the LPA-treated mice exhibited reduced long-term CPP retention and an approximately twofold increase in the number of adult-born hippocampal cells that differentiated into mature neurons. Importantly, mediation analyses confirmed a causal role of AHN in reducing CPP maintenance. In contrast, the ki16425-treated mice displayed aberrant responses, with initially decreased CPP retention that progressively increased across the extinction sessions, leading to no effect on AHN. The pharmacological treatments did not affect locomotion or general exploratory or anxiety-like responses. In a second experiment, normal and LPA1 -receptor-deficient mice were acutely infused with LPA, which revealed that LPA1 -mediated signaling was required for LPA-induced proliferative actions. These results suggest that the LPA/LPA1 pathway acts as a potent in vivo modulator of AHN and highlight the potential usefulness of pro-AHN strategies to treat aberrant cognition in those addicted to cocaine. eng http://creativecommons.org/licenses/by-nc-sa/4.0/ open access Atribución-NoComercial-CompartirIgual 4.0 Internacional Neurobiología del desarrollo Dataset for: "Lysophosphatidic acid-induced increase in adult hippocampal neurogenesis facilitates the forgetting of cocaine-contextual memory" dataset