Behavioural traits related with resilience or vulnerability to the development of cocaine-induced conditioned place preference after exposure of female mice to vicarious social defeat

Martínez-Caballero, Maria Ángeles ; Calpe-López, Claudia ; García-Pardo, Maria Pilar (Universidad de Zaragoza) ; Arenas, Maria Carmen ; de la Rubia Ortí, Jose Enrique ; Bayona-Babiloni, Raquel ; Aguilar, Maria Asunción

Resumen: Exposure to stress induced by intermittent repeated social defeat (IRSD) increases vulnerability to the development of cocaine-induced conditioned place preference (CPP) among male mice; however, some defeated mice are resilient to these effects of stress. In the present study we evaluated the effects of vicarious IRSD (VIRSD) in female mice and explored behavioural traits that are potentially predictive of resilience. C57BL/6 female mice (n = 28) were exposed to VIRSD, which consisted of the animals witnessing a short experience of social defeat by a male mouse on postnatal day (PND) 47, 50, 53 and 56. The control group (n = 10) was not exposed to stress. Blood samples were collected on PND 47 and 56 for corticosterone and interleukin-6 determinations. On PND 57–58, female mice performed several behavioural tests (elevated plus maze, hole-board, object recognition, social interaction, TST and splash tests). Three weeks later, the effects of cocaine (1.5 mg/kg) on the CPP paradigm were assessed. VIRSD decreased corticosterone levels (on PND 56), increased interleukin-6 levels, enhanced novelty-seeking, improved recognition memory and induced anxiety- and depression-like symptoms. Control and VIRSD female mice did not acquire CPP, although some stressed individuals with certain behavioural traits - including a high novelty-seeking profile or the development of depression-like behaviour in the splash test shortly after VIRSD - acquired cocaine CPP. Our results confirm that some behavioural traits of female mice are associated with vulnerability or resilience to the long-term effects of social stress on cocaine reward, as previously observed in males

Idioma: Inglés

DOI: 10.1016/j.pnpbp.2023.110912

Año: 2024

Publicado en: PROGRESS IN NEURO-PSYCHOPHARMACOLOGY & BIOLOGICAL PSYCHIATRY 130 (2024), 110912 [9 pp.]
ISSN: 0278-5846

Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2020-118945RB-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Psicolog.Evolut.Educac (Dpto. Psicología y Sociología)