Mitochondrial impairment: A common motif in neuropsychiatric presentation? The link to the tryptophan–kynurenine metabolic system

M Tanaka, Á Szabó, E Spekker, H Polyák, F Tóth… - Cells, 2022 - mdpi.com
Nearly half a century has passed since the discovery of cytoplasmic inheritance of human
chloramphenicol resistance. The inheritance was then revealed to take place maternally by …

Immune influencers in action: metabolites and enzymes of the tryptophan-kynurenine metabolic pathway

M Tanaka, F Tóth, H Polyák, Á Szabó, Y Mándi… - Biomedicines, 2021 - mdpi.com
The tryptophan (TRP)-kynurenine (KYN) metabolic pathway is a main player of TRP
metabolism through which more than 95% of TRP is catabolized. The pathway is activated …

Lactobacillus reuteri tryptophan metabolism promotes host susceptibility to CNS autoimmunity

TL Montgomery, K Eckstrom, KH Lile, S Caldwell… - Microbiome, 2022 - Springer
Background Dysregulation of gut microbiota-associated tryptophan metabolism has been
observed in patients with multiple sclerosis. However, defining direct mechanistic links …

Kynurenic acid: the Janus-faced role of an immunomodulatory tryptophan metabolite and its link to pathological conditions

E Wirthgen, A Hoeflich, A Rebl, J Günther - Frontiers in immunology, 2018 - frontiersin.org
Tryptophan metabolites are known to participate in the regulation of many cells of the
immune system and are involved in various immune-mediated diseases and disorders …

Recent evidence for an expanded role of the kynurenine pathway of tryptophan metabolism in neurological diseases

MD Lovelace, B Varney, G Sundaram, MJ Lennon… - …, 2017 - Elsevier
The kynurenine pathway (KP) of tryptophan metabolism has emerged in recent years as a
key regulator of the production of both neuroprotective (eg kynurenic and picolinic acid, and …

Kynurenines in the CNS: recent advances and new questions

L Vécsei, L Szalárdy, F Fülöp, J Toldi - Nature reviews Drug discovery, 2013 - nature.com
Various pathologies of the central nervous system (CNS) are accompanied by alterations in
tryptophan metabolism. The main metabolic route of tryptophan degradation is the …

Searching for peripheral biomarkers in neurodegenerative diseases: the tryptophan-kynurenine metabolic pathway

N Török, M Tanaka, L Vécsei - International journal of molecular sciences, 2020 - mdpi.com
Neurodegenerative diseases are multifactorial, initiated by a series of the causative complex
which develops into a certain clinical picture. The pathogenesis and disease course vary …

Quinolinic acid, the inescapable neurotoxin

GJ Guillemin - The FEBS journal, 2012 - Wiley Online Library
Over the last two decades, evidence for the involvement of quinolinic acid (QUIN) in
neuroinflammatory diseases has been exponentially increasing. Within the brain, QUIN is …

Exploring the etiological links behind neurodegenerative diseases: Inflammatory cytokines and bioactive kynurenines

M Tanaka, J Toldi, L Vécsei - International Journal of Molecular Sciences, 2020 - mdpi.com
Alzheimer's disease (AD) and Parkinson's disease (PD) are the most common
neurodegenerative diseases (NDs), presenting a broad range of symptoms from motor …

Kynurenines in CNS disease: regulation by inflammatory cytokines

BM Campbell, E Charych, AW Lee… - Frontiers in neuroscience, 2014 - frontiersin.org
The kynurenine pathway (KP) metabolizes the essential amino acid tryptophan and
generates a number of neuroactive metabolites collectively called the kynurenines …