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Metabolites, 2023 Tryptophan metabolism and gut microbiota form an integrated regulatory axis that impacts immunity, metabolism, and cancer. This review consolidated current knowledge on the bidirectional interactions between microbial tryptophan processing and the host ...
Yingjian Hou, Jing Li, Shuhuan Ying
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Frontiers in Cellular and Infection Microbiology, 2023 BackgroundsGut microbiota plays a critical role in the onset and development of depression, but the underlying molecular mechanisms are unclear. This study was conducted to explore the relationships between gut microbiota and host’s metabolism in ...
Jing Xie +8 more
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Tryptophan metabolism: Mechanism-oriented therapy for neurological and psychiatric disorders
Frontiers in Immunology, 2022 Neurological and psychiatric disorders are a category of chronic diseases that are widespread and pose serious mental and physical health problems for patients.
Dan Li +12 more
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Immune regulation through tryptophan metabolism
Experimental 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
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The Engagement of Cytochrome P450 Enzymes in Tryptophan Metabolism
Metabolites, 2023 Tryptophan is metabolized along three main metabolic pathways, namely the kynurenine, serotonin and indole pathways. The majority of tryptophan is transformed via the kynurenine pathway, catalyzed by tryptophan-2,3-dioxygenase or indoleamine-2,3 ...
Anna Haduch +3 more
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A Defect in Tryptophan Metabolism [PDF]
Pediatric Research, 1976 Oral tryptophan loading tests were performed in a patient with photosensitive pellagra-like skin rash and cerebellar ataxia but without hyperaminoaciduria. Plasma tryptophan concentrations after loading were similar in the patient and control subjects.
Paul Wong +3 more
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Circadian periodicity of tryptophan metabolism [PDF]
Journal 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.
Morton I. Rapoport, William R. Beisel
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Gut Microbes, 2022 Gut microbial disturbance affects allergic diseases including asthma, atopic dermatitis (AD) via the aberrant immune response. Some Bifidobacterial species and strains have been reported to improve AD via modulating immune-microbe interactions in ...
Zhifeng Fang +8 more
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Tryptophan metabolism is a physiological integrator regulating circadian rhythms
Molecular Metabolism, 2022 Objective: The circadian clock aligns physiology with the 24-hour rotation of Earth. Light and food are the main environmental cues (zeitgebers) regulating circadian rhythms in mammals.
Paul Petrus +17 more
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Tryptophan metabolism in alcoholism [PDF]
Nutrition Research Reviews, 2002 Studies of tryptophan (Trp) metabolism in relation to the serotonin status in alcoholism are of 2 types: (1) those related to the pharmacological effects of ethanol; (2) those concerning the serotonin status in the absence of alcohol intake. In experimental animals, acute and chronic ethanol administration and subsequent withdrawal exert a variety of ...
Abdulla A.‐B. Badawy
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