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Dopamine System (Central Nervous System)
- Molecular classification
- Neural Circuit, Neurotransmitter System
01
Overview
The dopamine system in the central nervous system (CNS) refers to the network of neurons that produce, release, and respond to dopamine—a catecholamine neurotransmitter. Dopamine plays a critical role in regulating movement, motivation, reward, cognition, mood, arousal, executive function, reinforcement learning, and neuroendocrine secretion. It comprises several major pathways (Nigrostriatal, Mesolimbic, Mesocortical, Tuberoinfundibular) and five receptor subtypes (D1-D5).
- Other names
- Dopaminergic SystemDopamine NeurotransmissionMesolimbic PathwayNigrostriatal PathwayMesocortical PathwayTuberoinfundibular Pathway
02
Mechanism of action
Varies depending on the specific drug and target (e.g., dopamine receptor agonism/antagonism, increasing dopamine synthesis, inhibiting dopamine reuptake).
03
Biological functions
Motor controlReward processingMotivationCognitionMood regulationArousalExecutive functionReinforcement learningNeuroendocrine secretion
04
Disease associations
Parkinson's diseaseSchizophreniaAddictionHyperprolactinemia
05
Safety considerations
Motor side effects (e.g., dyskinesias)Psychiatric side effects (e.g., psychosis, depression)Cardiovascular side effects (e.g., arrhythmias, hypotension)AddictionImpulse control disorders
06
Interacting drugs
L-DOPA
4 more in the full profile.
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