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Study of environmental enrichment inducing a protective phenotype of behaviors that assess addictive features in mice

Grant number: 15/02397-0
Support type:Regular Research Grants
Duration: February 01, 2016 - July 31, 2018
Field of knowledge:Biological Sciences - Pharmacology
Principal Investigator:Rosana Camarini
Grantee:Rosana Camarini
Home Institution: Instituto de Ciências Biomédicas (ICB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Environmental enrichment (EE) allows to study the influence of the environment in response to various manipulations, including the treatment of drug abuse. Our laboratory has shown that the EE is able to prevent and reverse the behavioral sensitization to ethanol in mice, and this was accompanied by decreased of Brain Derived Neurotrophic Factor (BDNF) in the prefrontal cortex of animals. One of the likely properties of the EE may involve its action on stress pathway. Stress plays a key role in addiction and relapse, and several studies indicate that ethanol is able to activate the HPA axis and increase levels of stress-related hormones such as CRF and corticosterone. This work aims to study the effects of EE on behavioral parameters (anxiety, depression, memory), on gene expression of Bdnf in the prefrontal cortex, and evaluate the role of the signaling pathway of BDNF on the protective effect of EE on ethanol-induced behavioral sensitization in the prefrontal cortex. The levels of oxytocin, distribution and quantification of OT receptors will also be assessed, as well as the conditioned place preference (CPP) to ethanol and to social stimuli under EE condition, and the role of the oxytocin on those parameters. Excessive drinking (relapse) of alcohol after a period of abstinence is a major feature of the process of addiction. Positive environmental conditions can help minimize cravings and withdrawal symptoms, however, negative conditions such as stress, may play a role in vulnerability to relapse. This study will also evaluate whether the EE modifies ethanol consumption after periods of abstinence and after stress. (AU)

Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RAE, MARIANA; ZANOS, PANOS; GEORGIOU, POLYMNIA; CHIVERS, PRITI; BAILEY, ALEXIS; CAMARINI, ROSANA. Environmental enrichment enhances conditioned place preference to ethanol via an oxytocinergic-dependent mechanism in male mice. Neuropharmacology, v. 138, p. 267-274, AUG 2018. Web of Science Citations: 7.
SANTOS-ROCHA, JAQUELINE BORGES; RAE, MARIANA; ARISTIMUNHO TEIXEIRA, ANA MARIA; TEIXEIRA, SIMONE APARECIDA; MUNHOZ, CAROLINA DEMARCHI; MUSCARA, MARCELO NICOLAS; MARCOURAKIS, TANIA; SZUMLINSKI, KAREN K.; CAMARINI, ROSANA. Involvement of neuronal nitric oxide synthase in cross-sensitization between chronic unpredictable stress and ethanol in adolescent and adult mice. ALCOHOL, v. 68, p. 71-79, MAY 2018. Web of Science Citations: 3.
MARCOS PAUTASSI, RICARDO; SUAREZ, ANDREA B.; HOFFMANN, LUCAS BARBOSA; RUEDA, ANDRE VELOSO; RAE, MARIANA; MARIANNO, PRISCILA; CAMARINI, ROSANA. Effects of environmental enrichment upon ethanol-induced conditioned place preference and pre-frontal BDNF levels in adolescent and adult mice. SCIENTIFIC REPORTS, v. 7, AUG 17 2017. Web of Science Citations: 6.
MARIANNO, PRISCILA; ABRAHAO, KARINA POSSA; CAMARINI, ROSANA. Environmental Enrichment Blunts Ethanol Consumption after Restraint Stress in C57BL/6 Mice. PLoS One, v. 12, n. 1 JAN 20 2017. Web of Science Citations: 15.

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