Opioid receptors and other monoaminergic, muscarinic, and voltage-gated calcium channels

The term Opioid receptors and other monoaminergic, muscarinic, and voltage-gated calcium channels refers to a diverse collection of physiological targets involved in pain modulation and autonomic signaling rather than a single protein. Opioid receptors (Mu, Delta, Kappa) are G protein-coupled receptors (GPCRs) that primarily mediate analgesia and reward, while monoaminergic targets (such as serotonin and norepinephrine transporters) regulate mood and descending inhibitory pain pathways. Muscarinic receptors and voltage-gated calcium channels further contribute to neurotransmitter release and excitability within the central and peripheral nervous systems. This broad grouping is often used to describe the complex polypharmacology of multi-target analgesics like methadone or nefopam, which achieve efficacy by simultaneously modulating several of these pathways. Because this entry combines multiple distinct protein families, it does not represent a single canonical therapeutic target.

Other names

Mixed opioid and non-opioid analgesic targetsMulti-target analgesic profile

This entry represents a heterogeneous group of pharmacological targets rather than a single molecular entity. Drugs interacting with this set typically act via G protein-coupled receptor modulation (opioid and muscarinic receptors), inhibition of monoamine reuptake (transporters), and blockade of ion conductance (calcium channels).