Trace amine-associated receptor 1 (TAAR1) is a classical type of G-protein-coupled receptor, which is widely distributed in the brain of mammals, especially in the limbic system and the region rich in monoaminergic neurons, and it is a highly conserved TAAR subtype in all species. TAAR1 can specifically respond to endogenous trace amines in the central nervous system and peripheral tissues, and plays an important role in the pathophysiological mechanisms involving the dysregulation of monoamine system and glutamate system leading to mental disorders. In addition, TAAR1 modulator can act on inwardly rectifying potassium channels and regulate synaptic transmission and neuronal activity. According to the latest research findings, TAAR1 exerts a series of functions by regulating signal pathways and substrate phosphorylation, which is related to emotion, cognition, fear and addiction. Therefore, we conducted a detailed review of relevant studies on the TAAR1 signaling pathways, aiming at revealing the great potential of TAAR1 as a new target for drug treatment of neuropsychiatric disorders.
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Front Psychiatry
December 2024
Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia.
Introduction: Aggression and self-harm disproportionately occur in youths preoccupied with social status tracking. These pathological conditions are linked to a serotonin (5-HT) deficit in the brain. Ablation of 5-HT biosynthesis by tryptophan hydroxylase 2 knockout (TPH2-KO) increases aggression in rodents.
View Article and Find Full Text PDFNeuropsychiatr Dis Treat
December 2024
Department of Medicine and Surgery, Kore University of Enna, Enna (EN), Italy.
Naunyn Schmiedebergs Arch Pharmacol
December 2024
Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Vile Parle (W), Mumbai, India.
Br J Psychiatry
December 2024
Population Health Sciences, Bristol Medical School, University of Bristol, UK.
Background: Trace amine-associated receptor 1 (TAAR1) agonists offer a new approach, but there is uncertainty regarding their effects, exact mechanism of action and potential role in treating psychosis.
Aims: To evaluate the available evidence on TAAR1 agonists in psychosis, using triangulation of the output of living systematic reviews (LSRs) of animal and human studies, and provide recommendations for future research prioritisation.
Method: This study is part of GALENOS (Global Alliance for Living Evidence on aNxiety, depressiOn and pSychosis).
Int J Mol Sci
December 2024
Institute of Translational Biomedicine, St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia.
Currently, the TAAR1 receptor has been identified in various cell groups in the intestinal wall. It recognizes biogenic amine compounds like phenylethylamine or tyramine, which are products of decarboxylation of phenylalanine and tyrosine by endogenous or bacterial decarboxylases. Since several gut bacteria produce these amines, TAAR1 is suggested to be involved in the interaction between the host and gut microbiota.
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