Results 31 to 40 of about 10,379 (248)

Quinolinate promotes macrophage-induced immune tolerance in glioblastoma through the NMDAR/PPARγ signaling axis

open access: yesNature Communications, 2023
The upstream metabolism of tryptophan has been described as a metabolic node in glioblastoma. Here the authors show that the downstream metabolism of tryptophan, resulting in the accumulation of quinolinate in glioblastoma, contributes to pro-tumorigenic
Pravin Kesarwani   +6 more
doaj   +1 more source

Evolution of substrate specificity in a recipient's enzyme following horizontal gene transfer [PDF]

open access: yes, 2013
Despite the prominent role of horizontal gene transfer (HGT) in shaping bacterial metabolism, little is known about the impact of HGT on the evolution of enzyme function.
Noda-Garcia, Lianet   +6 more
core   +1 more source

Alterations in tryptophan metabolism and de novo NAD+ biosynthesis within the microbiota-gut-brain axis in chronic intestinal inflammation

open access: yesFrontiers in Medicine
BackgroundInflammatory bowel disease is an incurable and idiopathic disease characterized by recurrent gastrointestinal tract inflammation. Tryptophan metabolism in mammalian cells and some gut microbes comprise intricate chemical networks facilitated by
Jeannie Devereaux   +15 more
doaj   +1 more source

Immune regulation through tryptophan metabolism

open access: yesExperimental and Molecular Medicine, 2023
Amino acids are fundamental units of molecular components that are essential for sustaining life; however, their metabolism is closely interconnected to the control systems of cell function.
Su-Kil Seo, Byungsuk Kwon
doaj   +1 more source

Tryptophan Metabolism in Allergic Disorders [PDF]

open access: yesInternational Archives of Allergy and Immunology, 2016
Allergic diseases such as asthma and rhinitis, as well the early phase of atopic dermatitis, are characterized by a Th2-skewed immune environment. Th2-type cytokines are upregulated in allergic inflammation, whereas there is downregulation of the Th1-type immune response and related cytokines, such as interferon-γ (IFN-γ).
Johanna M, Gostner   +4 more
openaire   +2 more sources

Tryptophan plays an important role in yeast’s tolerance to isobutanol

open access: yesBiotechnology for Biofuels, 2021
Background Isobutanol is considered a potential biofuel, thanks to its high-energy content and octane value, limited water solubility, and compatibility with gasoline.
Hsien-Lin Liu   +4 more
doaj   +1 more source

Abnormal Tryptophan Metabolism in HIV and Mycobacterium tuberculosis Infection

open access: yesFrontiers in Microbiology, 2021
Host metabolism has recently gained more attention for its roles in physiological functions and pathologic conditions. Of these, metabolic tryptophan disorders generate a pattern of abnormal metabolites that are implicated in various diseases.
Xiaolei Wang   +4 more
doaj   +1 more source

Metabolism of tryptophan along the kynurenine pathway in alloxan diabetic rabbits

open access: yes, 2002
In vivo study of the metabolism of tryptophan along the kynurenine pathway in alloxan diabetic ...
ALLEGRI, GRAZIELLA   +15 more
core   +1 more source

Circadian periodicity of tryptophan metabolism [PDF]

open access: yesJournal of Clinical Investigation, 1968
Rhythmicity of tryptophan metabolism via the kynurenine pathway has been demonstrated in man. Normal subjects given 3 g of tryptophan at 0900 hours excreted almost three times the quantity of kynurenine, kynurenic acid, and xanthurenic acid than did subjects given the same dose at 2100 hours.
M I, Rapoport, W R, Beisel
openaire   +2 more sources

Tryprophan metbolism in alcoholism. Tryptophan but not excitatory amino acid availablity to the brain is increased before the appearance of the alcohol-withdrawal syndrome in men [PDF]

open access: yes, 1998
Tryptophan (Trp) metabolism and disposition and excitatory and other amino acid concentrations were determined in alcohol-dependent subjects in relation to the alcohol-withdrawal syndrome (AWS).
Morgan, Christopher J.   +7 more
core  

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