Most cases of anxiety are currently treated with either benzodiazepines or serotonin reuptake inhibitors. These drugs carry with them risks for a multitude of side effects, and patient compliance suffers for this reason. There is thus a need for novel anxiolytics, and among the most compelling prospects in this vein is the study of the TAARs. The anxiolytic potential of ulotaront, a full agonist at the human TAAR1, is currently being investigated in patients with generalized anxiety disorder. Irrespective of whether this compound succeeds in clinical trials, a growing body of preclinical literature underscores the relevance of modulating the TAARs in anxiety. Multiple behavioral paradigms show anxiolytic-like effects in rodents, possibly due to increased neurogenesis and plasticity, in addition to a panoply of interactions between the TAARs and other systems. Crucially, multiple lines of evidence suggest that the TAARs, particularly TAAR1, TAAR2, and TAAR5, are expressed in the extended amygdala and hippocampus. These regions are central in the actuation of anxiety, and are particularly susceptible to neurogenic and neuroplastic effects which the TAARs are now known to regulate. The TAARs also regulate the dopamine and serotonin systems, both of which are implicated in anxiety. Ligands of the TAARs may thus constitute a new class of anxiolytics. © 2024 Elsevier Inc.
Original languageEnglish
Article number173817
JournalPharmacology, Biochemistry and Behavior
Volume242
DOIs
StatePublished - 1 Sep 2024

    Research areas

  • Anxiety, Anxiolytic, Dopamine, GAD, Neurogenesis, Serotonin, TAAR1, TAAR2, TAAR5, Trace amine, Ulotaront, amine, anxiolytic agent, benzodiazepine derivative, serotonin uptake inhibitor, trace amine associated receptor, ulotaront, 4-(3-fluoro-2-methylphenyl)-4,5-dihydrooxazol-2-ylamine, G protein coupled receptor, ligand, oxazole derivative, Trace amine-associated receptor 1, adult, adverse drug reaction, amygdala, anxiety, anxiety disorder, controlled study, drug interaction, female, generalized anxiety disorder, hippocampus, human, male, nervous system development, patient compliance, review, serotoninergic system, side effect, animal, drug therapy, metabolism, Animals, Anti-Anxiety Agents, Anxiety Disorders, Humans, Ligands, Oxazoles, Receptors, G-Protein-Coupled, Trace Amine-Associated Receptors

ID: 126390838