Serotonin and Gamma-aminobutyric acid receptor (5-HT and GABA receptor) (5-HTR and GABAR)

Serotonin (5-HT) and Gamma-aminobutyric acid (GABA) receptors are two distinct families of neurotransmitter receptors that play fundamental roles in central nervous system signaling [StatPearls: Physiology, Serotonin; StatPearls: GABA Receptor]. Serotonin receptors comprise seven classes (5-HT1 to 5-HT7), most of which are G protein-coupled receptors (GPCRs) that modulate mood, sleep, and appetite, while the 5-HT3 receptor is a ligand-gated ion channel [UniProt: 5-HT receptor family]. GABA receptors are the primary inhibitory receptors in the brain and are divided into GABA-A (ionotropic chloride channels) and GABA-B (metabotropic GPCRs) [PubMed: PMC6655130]. These receptor systems are critical therapeutic targets for a wide range of neuropsychiatric disorders, including depression, anxiety, and epilepsy, and they often exhibit complex functional interactions where GABAergic neurons regulate serotonergic activity [PubMed: 25637919]. Drugs targeting these receptors include SSRIs (indirectly), benzodiazepines, and triptans, which are used to manage conditions ranging from migraine to insomnia [PubChem]. Because this entry combines two separate and diverse receptor systems into a single target designation, it is considered non-specific and incorrect for precise molecular profiling.

Other names

5-Hydroxytryptamine receptorGamma-aminobutyric acid receptor5-HT receptorGABA receptorSerotonin receptorGABAergic receptor

Drugs targeting these receptors act as agonists, antagonists, or allosteric modulators to regulate neuronal excitability and monoaminergic signaling. For example, benzodiazepines act as positive allosteric modulators of GABA-A receptors to enhance inhibitory chloride conductance, while triptans act as selective agonists at 5-HT1B/1D receptors to cause vasoconstriction and inhibit pro-inflammatory neuropeptide release [StatPearls: GABA Receptor; StatPearls: Physiology, Serotonin].