Central nervous system monoamine system (CNS monoamine system)

The central nervous system monoamine system comprises interconnected neurotransmitter pathways that utilize molecules with a single amino group linked to an aromatic ring—such as dopamine, norepinephrine, serotonin, and sometimes histamine[1][3]. These systems play major roles in cognitive, emotional, and motor regulation and are key to the pathophysiology and treatment of a wide spectrum of psychiatric and neurologic disorders[2][7][8]. Molecular targets in these systems include receptors (mainly G protein-coupled, with some ion channels), transporters (responsible for reuptake), and enzymes that synthesize or degrade monoamines. Pharmacological modulation of these targets is the foundation of most current treatments for depression, schizophrenia, Parkinson's disease, and other brain disorders. However, the term "CNS monoamine system" is not a specific protein, making it a conceptual, functional grouping rather than a precise molecular target.

Other names

Monoaminergic systemMonoamine neurotransmitter systemCNS monoaminesCentral monoaminergic system

Inhibition of reuptake transporters (increase synaptic monoamine levels) - Inhibition of metabolism (e.g., MAO inhibition) - Direct receptor agonism or antagonism (at monoamine receptors; e.g., 5-HT2A agonists, dopamine receptor antagonists) - Promotion of neuroplasticity and neurotrophic support (e.g., via BDNF upregulation) - Modulation of neuroinflammatory pathways