文章基本信息

标题：Nicotine Differentially Modulates Emotional-Locomotor Interactions for Adult or Adolescent Rats
本地全文：下载
作者：Carlos Novoa ; José L. Solano ; Hans Nicolás Ballesteros-Acosta 等
期刊名称：Revista Colombiana de Psicología
印刷版ISSN：0121-5469
电子版ISSN：2344-8644
出版年度：2022
卷号：31
期号：1
页码：13-22
DOI：10.15446/rcp.v31n1.89822
语种：English
出版社：Universidad Nacional de Colombia
摘要：Previous research has shown that exposure to nicotine and other drugs of abuse stimulate dopaminergic neurons in the mesolimbic circuit. Sustained activation of this circuit by prolonged exposure to drugs promotes locomotor sensitization. However, there are inconsistent reports about nicotine-induced locomotor sensitization when assessed among different developmental stages. We evaluated exploratory behavior on specific areas of the open field as an indicator of behavioral disinhibition and general locomotor activity as an indicator of nicotine-induced locomotor sensitization, to further explore the mechanisms underlying behavioral adaptations to nicotine exposure in animals from different developmental stages. We found that while adolescent and adult rats are equally responsive to nicotine-induced locomotor sensitization, nicotine disrupts inhibition of risk-related behavior only in adolescent rats. Together, our results suggest that chronic daily exposure to nicotine promotes potentiation of its stimulant effects on locomotor activity. In adolescents, this effect is accompanied by a decreased capacity to inhibit risk-related behaviors under the acute effect of the drug.Novoa, C., Solano, J. L., Ballesteros-Acosta, H., Lamprea, R. M., & Ortega, L. A. (2021). Nicotine Differentially Modulates Emotional-Locomotor Interactions for Adult or Adolescent Rats.
关键词：locomotor sensitization; risk-related behaviors; open field; chronic daily nicotine; adolescence(en)