Tryptophan metabolites along the microbiota-gut-brain axis: an interkingdom communication system influencing the gut in health and disease

A Bosi, D Banfi, M Bistoletti… - International Journal of …, 2020 - journals.sagepub.com
The 'microbiota-gut-brain axis' plays a fundamental role in maintaining host homeostasis,
and different immune, hormonal, and neuronal signals participate to this interkingdom …

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 …

Glutamate uptake

NC Danbolt - Progress in neurobiology, 2001 - Elsevier
Brain tissue has a remarkable ability to accumulate glutamate. This ability is due to
glutamate transporter proteins present in the plasma membranes of both glial cells and …

Quinolinic acid: an endogenous neurotoxin with multiple targets

R Lugo-Huitrón, P Ugalde Muñiz… - Oxidative medicine …, 2013 - Wiley Online Library
Quinolinic acid (QUIN), a neuroactive metabolite of the kynurenine pathway, is normally
presented in nanomolar concentrations in human brain and cerebrospinal fluid (CSF) and is …

Neuropathology of mood disorders: do we see the stigmata of inflammation?

N Mechawar, J Savitz - Translational psychiatry, 2016 - nature.com
A proportion of cases with mood disorders have elevated inflammatory markers in the blood
that conceivably may result from stress, infection and/or autoimmunity. However, it is not yet …

Immunoexcitotoxicity as a Central Mechanism of Chronic Traumatic Encephalopathy–A Unifying Hypothesis

RL Blaylock, MD Maroon, C Joseph - 2012 - books.rsc.org
Approximately 1.7 million people in the United States annually experience a traumatic brain
injury (TBI). 1 The number of unreported head injuries is much higher. Sports-related head …

Smouldering lesion in MS: Microglia, lymphocytes and pathobiochemical mechanisms

D Pukoli, L Vécsei - International Journal of Molecular Sciences, 2023 - mdpi.com
Multiple sclerosis (MS) is an immune-mediated, chronic inflammatory, demyelinating, and
neurodegenerative disease of the central nervous system (CNS). Immune cell infiltration can …

Quinolinic acid stimulates synaptosomal glutamate release and inhibits glutamate uptake into astrocytes

RG Tavares, CI Tasca, CES Santos, LB Alves… - Neurochemistry …, 2002 - Elsevier
Quinolinic acid (QA) is an endogenous neurotoxin involved in various neurological
diseases, whose action seems to be exerted via glutamatergic receptors. However, the exact …

Current evidence for a role of the kynurenine pathway of tryptophan metabolism in multiple sclerosis

MD Lovelace, B Varney, G Sundaram… - Frontiers in …, 2016 - frontiersin.org
The kynurenine pathway (KP) is the major metabolic pathway of the essential amino acid
tryptophan (TRP). Stimulation by inflammatory molecules, such as interferon-γ (IFN-γ), is the …

L-Tryptophan-kynurenine pathway enzymes are therapeutic target for neuropsychiatric diseases: Focus on cell type differences

H Fujigaki, Y Yamamoto, K Saito - Neuropharmacology, 2017 - Elsevier
The kynurenine pathway (KP) is the major route for tryptophan (TRP) metabolism in most
mammalian tissues. The KP metabolizes TRP into a number of neuroactive metabolites …