Results 51 to 60 of about 41,015 (259)

Highly‐Time‐Resolved Measurements of Tryptophan's Distribution and Homeostatic Regulation in Live, Intact Animals

Advanced Science, EarlyView.
Using a novel, aptamer‐based biosensor, here we have performed 20‐s‐resolved, in situ measurements of plasma‐free tryptophan in the jugular veins of live rats (blue). This unprecedented time‐resolution provides insights into the regulation of tryptophan metabolism in live, intact animals.
Yuyang Wu, Chelsea N. Brown, Zeki Duman, Rose Mery Bakestani, Carl M. Kirkpatrick, Joao Hespanha, Tod Kippin, Kevin W. Plaxco   +7 more
wiley   +1 more source

Kynurenine Pathway in Psoriasis—a Promising Link?

Dermatology and Therapy, 2023
Psoriasis is a common dermatosis which affects the patient’s skin and general well-being because of its link to diseases such as depression, kidney disease and metabolic syndrome.
A. Stepaniuk, A. Baran, I. Flisiak
doaj   +1 more source

Brain Kynurenine Pathway and Functional Outcome of Rats Resuscitated From Cardiac Arrest

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2021
Background Brain injury and neurological deficit are consequences of cardiac arrest (CA), leading to high morbidity and mortality. Peripheral activation of the kynurenine pathway (KP), the main catabolic route of tryptophan metabolized at first into ...
Jacopo Lucchetti, Francesca Fumagalli, Davide Olivari, Roberta Affatato, Claudia Fracasso, Daria De Giorgio, Carlo Perego, Francesca Motta, Alice Passoni, Lidia Staszewsky, Deborah Novelli, Aurora Magliocca, Silvio Garattini, Roberto Latini, Giuseppe Ristagno, Marco Gobbi   +15 more
doaj   +1 more source

Chronic Stress Promotes Gastric Cancer Metastasis by Inducing Microbiota‐Associated Kynurenine Accumulation and Macrophage Remodeling

Advanced Science, EarlyView.
Chronic stress reshapes the gut microbiota and enriches Lactobacillus reuteri, promoting microbiota‐associated kynurenine accumulation through altered tryptophan metabolism. Kynurenine drives immunosuppressive remodeling of tumor‐associated macrophages through TNFR2–C/EBPβ signaling, thereby enhancing gastric cancer dissemination.
Sicheng Zhao, Zhiyuan Song, Jingcheng Zhang, Jiaheng Lou, Shuo Zhang, Boqiang Liu, Yunhai Wei, Fengmei Qiu, Tao Jiang, Guangji Zhang   +9 more
wiley   +1 more source

Circulating concentrations of citrulline, neopterin, kynurenine, and tryptophan during chemoradiation in patients with cervical carcinoma

Pteridines, 2021
The aim of this study was to investigate the changes in circulating concentrations of citrulline, neopterin, kynurenine, and tryptophan during the course of chemoradiation in patients with cervical cancer.
Pospíšková Markéta, Strouhal Ondřej, Hlídková Eva, Vlachová Zuzana, Melichar Bohuslav, Doležel Martin   +5 more
doaj   +1 more source

Clinical predictors of kynurenine pathway aberrations in schizophrenia and bipolar disorder

European Psychiatry, 2022
Introduction Schizophrenia and bipolar disorder are severe mental illnesses that are known to have a considerable overlap in underlying pathophysiological mechanisms.
K. Skorobogatov, M. Leboyer, M. Foiselle, M. Morrens, L. De Picker   +4 more
doaj   +1 more source

Bioengineered Stroma‐Camouflaged Nanovesicles Disrupt the IDO1/CD276 Immunosuppressive Circuit to Reinvigorate Antitumor Immunity

Advanced Science, EarlyView.
Bioengineered stroma‐camouflaged nanovesicles (AM@UIO‐BMS/DOX) convert the immunosuppressive tumor niche into an immunoresponsive milieu by disrupting the IDO1/CD276 circuit. Anti‐CD276 membrane camouflage guides tumor accumulation and deep penetration, enabling controlled co‐delivery of DOX and the IDO1 inhibitor BMS‐986205.
Ziqi Zhang, Jing Luo, Mengdi Zhang, Jingying Zhuang, Yating Zheng, Yang Zhang, Zhihong Huang, Xinhua Lin, Shuzhen Xu, Hong Yao, Gang Liu, Bing Chen   +11 more
wiley   +1 more source

Kynurenine: an oncometabolite in colon cancer

Cell Stress, 2020
Tryptophan is one of the eight essential amino acids that must be obtained from the diet. Interestingly, tryptophan is the least abundant amino acid in most proteins, a large portion of cellular tryptophan is converted into metabolites of the serotonin ...
Niranjan Venkateswaran, Maralice Conacci-Sorrell   +1 more
doaj   +1 more source

Tryptophan depletion sensitizes the AHR pathway by increasing AHR expression and GCN2/LAT1-mediated kynurenine uptake, and potentiates induction of regulatory T lymphocytes

Journal for ImmunoTherapy of Cancer, 2023
Background Indoleamine 2,3-dioxygenase 1 (IDO1) and tryptophan-dioxygenase (TDO) are enzymes catabolizing the essential amino acid tryptophan into kynurenine.
Luc Pilotte, Benoit J Van den Eynde, Jingjing Zhu, Christine Sers, Marie Solvay, Pauline Holfelder, Simon Klaessens, Vincent Stroobant, Juliette Lamy, Stefan Naulaerts, Quentin Spillier, Raphaël Frédérick, Etienne De Plaen, Christiane A Opitz   +13 more
doaj   +1 more source

Gut Microbiota‐Derived Indole‐3‐Acetaldehyde Contributes to the Disease‐Alleviating Effects of Kurarinone in Experimental Autoimmune Encephalomyelitis

Advanced Science, EarlyView.
Kurarinone ameliorates EAE via the gut microbiota‐indole‐3‐acetaldehyde‐AhR axis. Kurarinone reshapes gut microbiota and increases Akkermansia muciniphila, which promotes intestinal indole‐3‐acetaldehyde production. Indole‐3‐acetaldehyde crosses the intestinal barrier, activates AhR in CD4+ T cells, upregulates SOCS1/3, inhibits JAK2 and STAT3/4 ...
Xinyan Han, Jiaqi Ding, Zonghao Pan, Weitai He, Xue Kang, Cong Zhao, Yi Li, Di Wu, Hongzeng Li, Kaixi Ren, Jiaji Lin, Jun Guo   +11 more
wiley   +1 more source