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• W4386701227 endingPage "173636" @default.
• W4386701227 startingPage "173636" @default.
• W4386701227 abstract "Food restriction augments drug seeking in abstinent rats. The underlying motivational mechanisms, however, remain unclear. We hypothesized that caloric restriction enhances the incentive value attributed to drug-associated cues and, in turn, augments drug seeking. Male rats were trained to lever-press for heroin, and then moved to the animal colony for a forced-abstinence period. Rats were maintained on free access to food (Sated) or subjected to 14 days of food restriction (FDR). In a series of experiments, we assessed the effect of food-restriction on the incentive value of heroin-associated cues. Tests included performance under a progressive ratio (PR) schedule of reinforcement maintained by heroin-associated cues, acquisition of a novel operant response reinforced by drug-associated cues, effect of food-restriction on operant response reinforced by neutral cues, acquisition of a novel operant response reinforced by drug-associated or neutral cues, and the effect of food-restriction on operant response reinforced by drug-associated or neutral cues, under a discrete choice procedure. Food-restriction did not change breakpoints in PR maintained by heroin-associated cues. FDR rats acquired the novel response at a greater level compared to the Sated group. Food-restriction-induced increase in novel-response rate was observed for both heroin-paired and the neutral cue. Responding for a heroin-associated cue was greater than for the neutral cue in both Sated and FDR groups. Response rate for the neutral cue, however, was greater in the FDR versus Sated group. Our findings suggest that food restriction increases the conditioned motivational properties of environmental stimuli, including, but not exclusive to, heroin-paired cues." @default.
• W4386701227 created "2023-09-14" @default.
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• W4386701227 date "2023-10-01" @default.
• W4386701227 modified "2023-09-27" @default.
• W4386701227 title "Modulation of cue value and the augmentation of heroin seeking in chronically food-restricted male rats under withdrawal" @default.
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• W4386701227 doi "https://doi.org/10.1016/j.pbb.2023.173636" @default.
• W4386701227 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37714221" @default.
• W4386701227 hasPublicationYear "2023" @default.
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