The Role of Tryptophan Metabolites in Neuropsychiatric Disorders

In recent decades, neuropsychiatric disorders such as major depressive disorder, schizophrenia, bipolar, etc., have become a global health concern, causing various detrimental influences on patients. Tryptophan is an important amino acid that plays an indisputable role in several physiological proce...

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Main Authors: Majid Davidson, Niloufar Rashidi, Kulmira Nurgali, Vasso Apostolopoulos
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/23/17/9968
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author Majid Davidson
Niloufar Rashidi
Kulmira Nurgali
Vasso Apostolopoulos
author_facet Majid Davidson
Niloufar Rashidi
Kulmira Nurgali
Vasso Apostolopoulos
author_sort Majid Davidson
collection DOAJ
description In recent decades, neuropsychiatric disorders such as major depressive disorder, schizophrenia, bipolar, etc., have become a global health concern, causing various detrimental influences on patients. Tryptophan is an important amino acid that plays an indisputable role in several physiological processes, including neuronal function and immunity. Tryptophan’s metabolism process in the human body occurs using different pathways, including the kynurenine and serotonin pathways. Furthermore, other biologically active components, such as serotonin, melatonin, and niacin, are by-products of Tryptophan pathways. Current evidence suggests that a functional imbalance in the synthesis of Tryptophan metabolites causes the appearance of pathophysiologic mechanisms that leads to various neuropsychiatric diseases. This review summarizes the pharmacological influences of tryptophan and its metabolites on the development of neuropsychiatric disorders. In addition, tryptophan and its metabolites quantification following the neurotransmitters precursor are highlighted. Eventually, the efficiency of various biomarkers such as inflammatory, protein, electrophysiological, genetic, and proteomic biomarkers in the diagnosis/treatment of neuropsychiatric disorders was discussed to understand the biomarker application in the detection/treatment of various diseases.
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spelling doaj.art-afc45cee48194929ba686a916f3e1f922023-11-23T13:20:25ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-09-012317996810.3390/ijms23179968The Role of Tryptophan Metabolites in Neuropsychiatric DisordersMajid Davidson0Niloufar Rashidi1Kulmira Nurgali2Vasso Apostolopoulos3Institute for Health and Sport, Victoria University, Melbourne, VIC 3011, AustraliaInstitute for Health and Sport, Victoria University, Melbourne, VIC 3011, AustraliaInstitute for Health and Sport, Victoria University, Melbourne, VIC 3011, AustraliaInstitute for Health and Sport, Victoria University, Melbourne, VIC 3011, AustraliaIn recent decades, neuropsychiatric disorders such as major depressive disorder, schizophrenia, bipolar, etc., have become a global health concern, causing various detrimental influences on patients. Tryptophan is an important amino acid that plays an indisputable role in several physiological processes, including neuronal function and immunity. Tryptophan’s metabolism process in the human body occurs using different pathways, including the kynurenine and serotonin pathways. Furthermore, other biologically active components, such as serotonin, melatonin, and niacin, are by-products of Tryptophan pathways. Current evidence suggests that a functional imbalance in the synthesis of Tryptophan metabolites causes the appearance of pathophysiologic mechanisms that leads to various neuropsychiatric diseases. This review summarizes the pharmacological influences of tryptophan and its metabolites on the development of neuropsychiatric disorders. In addition, tryptophan and its metabolites quantification following the neurotransmitters precursor are highlighted. Eventually, the efficiency of various biomarkers such as inflammatory, protein, electrophysiological, genetic, and proteomic biomarkers in the diagnosis/treatment of neuropsychiatric disorders was discussed to understand the biomarker application in the detection/treatment of various diseases.https://www.mdpi.com/1422-0067/23/17/9968tryptophanneuropsychiatric disordersmetabolic pathwayspharmacological influences
spellingShingle Majid Davidson
Niloufar Rashidi
Kulmira Nurgali
Vasso Apostolopoulos
The Role of Tryptophan Metabolites in Neuropsychiatric Disorders
International Journal of Molecular Sciences
tryptophan
neuropsychiatric disorders
metabolic pathways
pharmacological influences
title The Role of Tryptophan Metabolites in Neuropsychiatric Disorders
title_full The Role of Tryptophan Metabolites in Neuropsychiatric Disorders
title_fullStr The Role of Tryptophan Metabolites in Neuropsychiatric Disorders
title_full_unstemmed The Role of Tryptophan Metabolites in Neuropsychiatric Disorders
title_short The Role of Tryptophan Metabolites in Neuropsychiatric Disorders
title_sort role of tryptophan metabolites in neuropsychiatric disorders
topic tryptophan
neuropsychiatric disorders
metabolic pathways
pharmacological influences
url https://www.mdpi.com/1422-0067/23/17/9968
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