Publications

Dernière publication 30/11/2013

Repeated transcranial direct current stimulation prevents abnormal behaviors ass

Successful available treatments to quit smoking remain scarce. Recently, the potential of transcranial direct current stimulation (tDCS) as a tool...

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    [title] => Repeated transcranial direct current stimulation prevents abnormal behaviors ass
    [paragraph] => Repeated transcranial direct current stimulation prevents abnormal behaviors associated withabstinence from chronic nicotine consumption 
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Authors
Pedron et al. 1 Repeated transcranial direct current stimulation prevents abnormal behaviors associated with S.Pedron,J.Monnin,E.Haffen,D.Sechter, V.Van Waes 1, Julie Monnin (PhD) 

 Lab
EA 481 Laboratory of Integrative and Clinical Neuroscience,University of Franche-Comté,Besançon, France INSERM CIC-IT 808 Clinical Investigation Centre for Innovative Technology, University Hospital,Besançon, France 
Journal
Neuropsychopharmacology
Abstract
Successful available treatments to quit smoking remain scarce. Recently, the potential of transcranial direct current stimulation (tDCS) as a tool to reduce craving for nicotine has gained interest. However, there is no documented animal model to assess the neurobiological mechanisms of tDCS on addiction-related behaviors. To address this topic, we have developed a model of repeated tDCS in mice and used it to validate its effectiveness in relieving nicotine addiction.Anodal repeated tDCS was applied over the frontal cortex of Swiss female mice. The stimulation electrode (anode) was fixed directly onto the cranium and the reference electrode was placed onto the ventral thorax. A 2 x 20 min/day stimulation paradigm for 5 consecutive days was used (0.2mA). In the first study, we screened for behaviors altered by the stimulation. Second, we tested whether tDCS could alleviate abnormal behaviors associated with abstinence from nicotine consumption. In naive animals, repeated tDCS had antidepressant-like properties 3 weeks after the last stimulation, improved working memory, and decreased conditioned place preference for nicotine without affecting locomotor activity and anxiety-related behavior. Importantly, abnormal behaviors associated with chronic nicotine exposure (i.e. depression-like behavior, increase in nicotine-induced place preference) were normalized by repeated tDCS. Our data show for the first time in an animal model that repeated tDCS is a promising, non-expensive clinical tool that could be used to reduce smoking craving and facilitate smoking cessation. Our animal model will be useful to investigate the mechanisms underlying the effects of tDCS on addiction and other psychiatric disorders.
BIOSEB Instruments Used
Activmeter (BIO-ACTIV2-M)
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