Neuroreport · 2004 · 112 citations · 15 references
MedicineNeurobiologyNeuroscienceBehavioral NeuroscienceNeuropharmacologyPsychopharmacologyAppetiteAppetite RegulationEating BehaviorsNeuromodulationOpioid PharmacologyReward PathwaysAffectAnorexigenic SignalingBinge Eating EpisodesBinge-eating TypeEndogenous OpioidsFeeding Behavior RegulationFood Intake BehaviorHedonic Appetite Control
Endogenous opioid peptides within the nucleus accumbens are thought to mediate the hedonic aspects of food intake, particularly foods such as fat and sugar. In view of evidence that the amygdala also regulates positive affect, we hypothesized this brain region participates in the control of opioid-mediated food intake. The robust increase in the intake of fat following intra-accumbens administration of the mu-opioid agonist D-Ala2,Nme-Phe4,Glyol5-enkephalin (DAMGO) was completely blocked by concurrent temporary inactivation (muscimol, GABA(A) agonist) of either the basolateral or central nucleus of the amygdala. In summary, we demonstrate that amygdala inactivation prevents the intra-accumbens opioid induced "binge" eating of fat, possibly through reducing the hedonic properties of high-fat palatable food.
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James O. Hill, Holly R. Wyatt, George Reed et al. · Science · 2003 · 2.2K citations
Public Health, Health Promotion, Public Health Nutrition +17
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David J. Krupa, Judith K. Thompson, Richard F. Thompson · Science · 1993 · 520 citations
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