Actions of Trace Amines in the Brain-Gut-Microbiome Axis via Trace Amine-Associated Receptor-1 (TAAR1)

Katlynn Bugda Gwilt*, Dulce Pamela González, Neva Olliffe, Haley Oller, Rachel Hoffing, Marissa Puzan, Sahar El Aidy, Gregory M Miller

*Corresponding author for this work

Research output: Contribution to journalReview articleAcademicpeer-review

7 Citations (Scopus)
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Trace amines and their primary receptor, Trace Amine-Associated Receptor-1 (TAAR1) are widely studied for their involvement in the pathogenesis of neuropsychiatric disorders despite being found in the gastrointestinal tract at physiological levels. With the emergence of the "brain-gut-microbiome axis," we take the opportunity to review what is known about trace amines in the brain, the defined sources of trace amines in the gut, and emerging understandings on the levels of trace amines in various gastrointestinal disorders. Similarly, we discuss localization of TAAR1 expression in the gut, novel findings that TAAR1 may be implicated in inflammatory bowel diseases, and the reported comorbidities of neuropsychiatric disorders and gastrointestinal disorders. With the emergence of TAAR1 specific compounds as next-generation therapeutics for schizophrenia (Roche) and Parkinson's related psychoses (Sunovion), we hypothesize a therapeutic benefit of these compounds in clinical trials in the brain-gut-microbiome axis, as well as a potential for thoughtful manipulation of the brain-gut-microbiome axis to modulate symptoms of neuropsychiatric disease.

Original languageEnglish
Pages (from-to)191-201
Number of pages11
JournalCellular and molecular neurobiology
Issue number2
Early online date13-Dec-2019
Publication statusPublished - 1-Mar-2020


  • Microbiome
  • Trace amines
  • “Gut-brain-axis”

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