Non-Invasive Brain Stimulation Effects on Biomarkers of Tryptophan Metabolism: A Scoping Review and Meta-Analysis

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Publicat a:International Journal of Molecular Sciences vol. 23, no. 17 (2022), p. 9692
Autor principal: Giron, Cristian G
Altres autors: Lin, Tim T Z, Kan, Rebecca L D, Zhang, Bella B B, Suk Yu Yau, Kranz, Georg S
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MDPI AG
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024 7 |a 10.3390/ijms23179692  |2 doi 
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100 1 |a Giron, Cristian G  |u Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China 
245 1 |a Non-Invasive Brain Stimulation Effects on Biomarkers of Tryptophan Metabolism: A Scoping Review and Meta-Analysis 
260 |b MDPI AG  |c 2022 
513 |a Evidence Based Healthcare Journal Article 
520 3 |a Abnormal activation of the kynurenine and serotonin pathways of tryptophan metabolism is linked to a host of neuropsychiatric disorders. Concurrently, noninvasive brain stimulation (NIBS) techniques demonstrate high therapeutic efficacy across neuropsychiatric disorders, with indications for modulated neuroplasticity underlying such effects. We therefore conducted a scoping review with meta-analysis of eligible studies, conforming with the PRISMA statement, by searching the PubMed and Web of Science databases for clinical and preclinical studies that report the effects of NIBS on biomarkers of tryptophan metabolism. NIBS techniques reviewed were electroconvulsive therapy (ECT), transcranial magnetic stimulation (TMS), and transcranial direct current stimulation (tDCS). Of the 564 search results, 65 studies were included with publications dating back to 1971 until 2022. The Robust Bayesian Meta-Analysis on clinical studies and qualitative analysis identified general null effects by NIBS on biomarkers of tryptophan metabolism, but moderate evidence for TMS effects on elevating serum serotonin levels. We cannot interpret this as evidence for or against the effects of NIBS on these biomarkers, as there exists several confounding methodological differences in this literature. Future controlled studies are needed to elucidate the effects of NIBS on biomarkers of tryptophan metabolism, an under-investigated question with substantial implications to clinical research and practice. 
653 |a Antidepressants 
653 |a Electroconvulsive therapy 
653 |a Brain research 
653 |a Serotonin 
653 |a Restrictions 
653 |a Metabolism 
653 |a Schizophrenia 
653 |a Melatonin 
653 |a Biomarkers 
653 |a Nervous system 
653 |a Animal cognition 
653 |a Metabolites 
653 |a Meta-analysis 
653 |a Neuroplasticity 
700 1 |a Lin, Tim T Z  |u Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China 
700 1 |a Kan, Rebecca L D  |u Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China 
700 1 |a Zhang, Bella B B  |u Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China 
700 1 |a Suk Yu Yau  |u Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China; Mental Health Research Center (MHRC), The Hong Kong Polytechnic University, Hong Kong SAR, China 
700 1 |a Kranz, Georg S  |u Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China; Mental Health Research Center (MHRC), The Hong Kong Polytechnic University, Hong Kong SAR, China; Department of Psychiatry and Psychotherapy, Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, 1090 Vienna, Austria; The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China 
773 0 |t International Journal of Molecular Sciences  |g vol. 23, no. 17 (2022), p. 9692 
786 0 |d ProQuest  |t Health & Medical Collection 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/2711397631/abstract/embedded/L8HZQI7Z43R0LA5T?source=fedsrch 
856 4 0 |3 Full Text + Graphics  |u https://www.proquest.com/docview/2711397631/fulltextwithgraphics/embedded/L8HZQI7Z43R0LA5T?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/2711397631/fulltextPDF/embedded/L8HZQI7Z43R0LA5T?source=fedsrch