2024
Lower Dorsal Putamen D2/3 Receptor Availability and Amphetamine-Induced Dopamine Release are Related to Poorer Cognitive Function in Recently Abstinent People Who Smoke and Healthy Controls
Cheung F, Calakos K, Gueorguieva R, Hillmer A, Cosgrove K, Zakiniaeiz Y. Lower Dorsal Putamen D2/3 Receptor Availability and Amphetamine-Induced Dopamine Release are Related to Poorer Cognitive Function in Recently Abstinent People Who Smoke and Healthy Controls. Nicotine & Tobacco Research 2024, 26: 1038-1044. PMID: 38367211, PMCID: PMC11260895, DOI: 10.1093/ntr/ntae031.Peer-Reviewed Original ResearchAmphetamine-induced dopamine releaseBrain-behavior relationshipsAbstinent peopleDorsal striatumCognitive functionDopamine releasePoorer cognitive functionD2/3R availabilityDelayed recallHealthy controlsTests of verbal learningDysregulated dopamine signalingD2/3 receptor availabilityDrug-seeking behaviorDorsolateral prefrontal cortexCogState computerized batteryPositron emission tomography scanAmphetamine administrationMesocortical pathwayMesolimbic pathwayDopamine systemPrefrontal cortexVerbal learningBaseline BPNDDopamine signaling
2023
Sex steroid hormone levels associated with dopamine D2/3 receptor availability in people who smoke cigarettes
Zakiniaeiz Y, Gueorguieva R, Peltier M, Verplaetse T, Roberts W, McKee S, Cosgrove K. Sex steroid hormone levels associated with dopamine D2/3 receptor availability in people who smoke cigarettes. Frontiers In Behavioral Neuroscience 2023, 17: 1192740. PMID: 37358969, PMCID: PMC10288103, DOI: 10.3389/fnbeh.2023.1192740.Peer-Reviewed Original ResearchSex steroid hormone levelsSteroid hormone levelsLow estradiol levelsTobacco smokingSex-matched counterpartsHormone levelsFree testosteroneEstradiol levelsAmphetamine administrationR availabilityPositron emission tomography scanPrimary addictive componentEmission tomography scanDopamine D2/3 receptor availabilityEffects of nicotineSex steroid hormonesAge-matched controlsCortical brain regionsD2/3 receptor availabilityNicotinic acetylcholine receptorsSex differencesDorsolateral prefrontal cortexDrug-taking behaviorDopaminergic actionsAddictive component