Dopaminergic Modulation of Effort-Related Choice Behavior as Assessed by a Progressive Ratio Chow Feeding Choice Task: Pharmacological Studies and the Role of Individual Differences
Randall P, Pardo M, Nunes E, Cruz L, Vemuri V, Makriyannis A, Baqi Y, Müller C, Correa M, Salamone J. Dopaminergic Modulation of Effort-Related Choice Behavior as Assessed by a Progressive Ratio Chow Feeding Choice Task: Pharmacological Studies and the Role of Individual Differences. PLOS ONE 2012, 7: e47934. PMID: 23110135, PMCID: PMC3478264, DOI: 10.1371/journal.pone.0047934.Peer-Reviewed Original ResearchMeSH Keywords3,3'-DiaminobenzidineAdenosine A2 Receptor AntagonistsAnalysis of VarianceAnimal FeedAnimal Nutritional Physiological PhenomenaAnimalsChoice BehaviorDopamineDopamine and cAMP-Regulated Phosphoprotein 32Dopamine AntagonistsFeeding BehaviorHaloperidolImmunohistochemistryIndividualityMalePiperidinesPyrazolesRatsRats, Sprague-DawleyXanthinesConceptsProgressive ratioLever pressesPrimary food motivationNucleus accumbens coreCB1 inverse agonistsFood-seeking behaviorChow intakeMSX-3DA transmissionDA antagonismDopaminergic modulationDrug treatmentHigh respondersLaboratory chowLow respondersChow consumptionEffort-related processesSignal transduction activityAccumbens coreMesolimbic dopaminePharmacological studiesFood-reinforced tasksInverse agonistBehavioral activationFood motivationThe novel adenosine A2A antagonist prodrug MSX-4 is effective in animal models related to motivational and motor functions
Santerre J, Nunes E, Kovner R, Leser C, Randall P, Collins-Praino L, Cruz L, Correa M, Baqi Y, Müller C, Salamone J. The novel adenosine A2A antagonist prodrug MSX-4 is effective in animal models related to motivational and motor functions. Pharmacology Biochemistry And Behavior 2012, 102: 477-487. PMID: 22705392, DOI: 10.1016/j.pbb.2012.06.009.Peer-Reviewed Original ResearchConceptsMSX-3Amino acid ester prodrugsTreatment of depressionDorsal striatal functionDopamine D2 receptorsSame dose rangeNucleus accumbens coreEffort-related choice behaviorConcurrent leverOral tremorD2 antagonistIntraperitoneal administrationActive dosesLocomotor suppressionMotor functionStriatal functionD2 receptorsAnxiogenic effectsMotor impairmentSelective adenosineAnimal modelsMotivational symptomsAccumbens coreAntiparkinsonian profileEster prodrugs