Environmental novelty and illumination modify ethanol-induced open-field behavioral effects in mice

Environmental novelty and illumination modify ethanol-induced open-field behavioral effects in mice

Author Fukushiro, Daniela F. Autor UNIFESP Google Scholar
Benetti, Liliane F. Autor UNIFESP Google Scholar
Josino, Fabiana S. Autor UNIFESP Google Scholar
Oliveira, Gabriela P. Autor UNIFESP Google Scholar
Fernandes, Maiara deM. Autor UNIFESP Google Scholar
Saito, Luis P. Autor UNIFESP Google Scholar
Uehara, Regina A. Autor UNIFESP Google Scholar
Wuo-Silva, Raphael Autor UNIFESP Google Scholar
Oliveira, Camila S. Autor UNIFESP Google Scholar
Frussa-Filho, Roberto Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract Both spontaneous and drug-induced animal behaviors can be modified by exposure to novel stimuli or different levels of environmental illumination. However, research into how these factors specifically impact ethanol (ETH)-induced behavioral effects is currently lacking. We aimed to investigate the effects of these two factors, considered separately or in conjunction, on ETH-induced acute hyperloconnotor effect and its sensitization in adult male Swiss mice. Mice were placed in a novel or familiar open-field under normal light (200 lx) or low light (9 lx) immediately after receiving an ip injection of either 1.8 g/kg ETH or saline (SAL). After 7 days, all animals received an ip challenge injection of 1.8 g/kg ETH, and were placed in the open-field under the same light conditions described above. Novelty increased central locomotion and decreased grooming, while low light increased grooming. Acute ETH administration increased both total and peripheral locomotion and these effects were potentiated by low light. Both low light and novelty were able to facilitate ETH-induced locomotor sensitization, which was detected by the central locomotion parameter. However, there was no synergism between the effects of these two modulating factors on ETH-induced behavioral sensitization. We conclude that both the acute behavioral effects of ETH and behavioral sensitization induced by previous administration of this drug can be critically modified by environmental factors. in addition, our study stresses the importance of using different behavioral parameters to evaluate the interaction between environmental factors and ETH effects. (C) 2009 Elsevier Inc. All rights reserved.
Keywords Behavioral sensitization
Ethanol
Light intensity
Locomotion
Mice
Novel environment
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundo de Apoio ao Docente e Aluno (FADA)
Associacao Fundo de Pesquisa em Psicobiologia (AFIP)
Date 2010-03-01
Published in Pharmacology Biochemistry and Behavior. Oxford: Pergamon-Elsevier B.V., v. 95, n. 1, p. 13-22, 2010.
ISSN 0091-3057 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 13-22
Origin http://dx.doi.org/10.1016/j.pbb.2009.12.001
Access rights Closed access
Type Article
Web of Science ID WOS:000275617800003
URI http://repositorio.unifesp.br/handle/11600/32344

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