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Negative Urgency Exacerbates Relapse to Cocaine Seeking After Abstinence.

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Peña-Oliver, Yolanda 
Puaud, Mickaёl 
Lim, Nicole TY 
Giuliano, Chiara 


BACKGROUND: The mechanisms through which drug-cue-induced negative affective states are involved in relapse have not been defined. We tested the hypothesis that in individuals having developed a dorsolateral striatum (DLS)-dependent cue-controlled cocaine-seeking habit, the loss of the opportunity to enact the drug-seeking response during abstinence results in an urge to act that exacerbates relapse severity mediated by negative urgency. METHODS: Eighty-seven male Sprague Dawley rats were trained to seek cocaine under the influence of the conditioned reinforcing properties of drug-paired cues or not. We investigated whether the tendency to relapse depended on the aversive state of withdrawal or instead on the loss of opportunity to perform the ingrained drug-seeking response after periods of abstinence. The striatal locus of control over cocaine seeking at baseline and relapse was investigated using in situ hybridization of the cellular activity marker C-fos and assessment of the sensitivity of instrumental drug seeking to dopamine receptor blockade in the dorsomedial striatum-dependent goal-directed and DLS-dependent habit systems. RESULTS: The development of a DLS-dependent cue-controlled cocaine-seeking habit prior to abstinence resulted in a marked increase in drug seeking at relapse, which was not motivated by a cocaine withdrawal state and was no longer dependent on the DLS habit system. Instead, it reflected the emergence of negative urgency caused by the prevention of the performance of the habit during abstinence and underpinned by transient engagement of the goal-directed system. CONCLUSIONS: These results show that ingrained cue-controlled drug-seeking habits increase the pressure to relapse.



Cocaine, Goal-directed behavior, Incentive habits, Negative urgency, Relapse, Striatum, Animals, Cocaine, Cocaine-Related Disorders, Cues, Drug-Seeking Behavior, Male, Rats, Rats, Sprague-Dawley, Recurrence, Self Administration

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Biol Psychiatry

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Elsevier BV
Leverhulme Trust (RPG-2016-117)
Medical Research Council (MR/N02530X/1)
Leverhulme Trust