Results 41 to 50 of about 9,006 (217)

Development of a translational inflammation panel for the quantification of cerebrospinal fluid Pterin, Tryptophan-Kynurenine and Nitric oxide pathway metabolites

EBioMedicine, 2022
Summary: Background: Neuroinflammatory diseases such as encephalitis, meningitis, multiple sclerosis and other neurological diseases with inflammatory components, have demonstrated a need for diagnostic biomarkers to define treatable and reversible ...
Jingya Yan, Velda X. Han, Benjamin Heng, Gilles J. Guillemin, Sushil Bandodkar, Russell C. Dale   +5 more
doaj   +1 more source

The Influence of Kynurenine and Its Metabolites on Lipid Metabolism

Pteridines, 1997
Incorporation of fatty acids into phospholipids has been investigated using samples of rat liver tissue homogenate, Krebs-Ringer-phosphate buffer (pH=7.4) containing 0.3% albumin, fatty acid mixture and glycerol.
Rudzite Vera, Jurika Edite, Jirgensons Janis, Herpfer Inga, Weiss Günter, Wachter Helmut, Fuchs Dietmar   +6 more
doaj   +1 more source

Improved Synthesis of N-Substituted Quinolinimides Using Microwave Irradiation

Molecules, 2000
The synthesis of several quinolinimidoacetic acid derivatives (I) by two different routes, starting from quinolinic anhydride or quinolinimide, is described.
M. M. Blanco, I. A. Perillo, C. B. Schapira   +2 more
doaj   +1 more source

Vitamin C and E Treatment Blocks Changes in Kynurenine Metabolism Triggered by Three Weeks of Sprint Interval Training in Recreationally Active Elderly Humans

Antioxidants, 2021
The kynurenine pathway (KP) is gaining attention in several clinical fields. Recent studies show that physical exercise offers a therapeutic way to improve ratios of neurotoxic to neuroprotective KP metabolites.
Victoria L. Wyckelsma, Ada Trepci, Lilly Schwieler, Tomas Venckunas, Marius Brazaitis, Sigitas Kamandulis, Henrikas Paulauskas, Helena Gapeyeva, Mati Pääsuke, Stefano Gastaldello, Sophie Imbeault, Håkan Westerblad, Sophie Erhardt, Daniel C. Andersson   +13 more
doaj   +1 more source

Electrocatalytic Dehydrogenative Lactonization of Benzylic Alcohols: A Sustainable Access to Phthalides via N‐hydroxyphthalimide Mediation

Advanced Synthesis &Catalysis, EarlyView.
A mild, scalable electrocatalytic method for direct lactonization of benzylic alcohols to phthalides using N‐hydroxyphthalimide as a redox mediator is reported. This metal‐free process proceeds via a phthalimide‐N‐oxyl‐mediated hydrogen atom transfer mechanism, shows broad scope with good to excellent yields, and enables late‐stage functionalizations ...
Pietro Ronco, Antonia Simi, Enrico Lunghi, Emanuele Casali, Giovanni Lenardon, Alessio Porta, Giuseppe Zanoni   +6 more
wiley   +1 more source

Disruption of Gut Microbiota‐Mediated De Novo NAD+ Synthesis Contributes to the Development of Polycystic Ovary Syndrome

Advanced Science, EarlyView.
This study demonstrates that patients with PCOS exhibit altered gut microbial profiles, and FMT from PCOS patients induces PCOS‐like symptoms in mice. Specifically, gut dysbiosis reduces 3‐HAA levels in the context of PCOS. Administration of 3‐HAA to mice alleviates PCOS by promoting de novo NAD+ synthesis.
Ke Chen, Huafeng Geng, Yang Zheng, Hongyang Xie, Rui Qin, Junyang Chen, Cong Ye   +6 more
wiley   +1 more source

Redefining the Skin Barrier: A Microbiome‐Integrated Multilayered Defense Model

Barrier Immunity, EarlyView.
ABSTRACT The skin constitutes a dynamic interface orchestrating a sophisticated multilayered defense system comprising physical, chemical, immune, and microbial barriers. This review synthesizes current understanding of the structural and functional integration of these barriers, emphasizing their synergistic interactions in maintaining cutaneous ...
Jingjing Xia, Mathias Hochgerner, Qingzhen Wei, Xian'ge Zhong, Jiucun Wang   +4 more
wiley   +1 more source

Investigations on some metabolites of Tecoma stans Juss. callus tissue. Part II. Chromatographical analysis of alkaloid and quinone compounds

Acta Societatis Botanicorum Poloniae, 2015
Tecoma stans Juss. callus tissue grown on Murashige-Mei Lie Lin (M-L) and Murashige-Skoog (RT-k) medium supplemented with Tecoma alkaloid precursors like lysine, mevalonic acid lactone and quinolinic acid, were investigated for their alkaloid content by ...
Barbara Dohnal
doaj   +1 more source

Quinolinic Acid: An Endogenous Neurotoxin with Multiple Targets [PDF]

Oxidative Medicine and Cellular Longevity, 2013
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 often implicated in the pathogenesis of a variety of human neurological diseases. QUIN is an agonist of N-methyl-D-aspartate (NMDA) receptor, and it has a highin vivopotency as
Camilo Ríos, Rafael Lugo-Huitrón, Perla Ugalde Muñiz, Verónica Pérez de la Cruz, Benjamin Pineda, José Pedraza-Chaverri   +5 more
openaire   +3 more sources

Metabolic abnormalities and reprogramming in cats with naturally occurring hypertrophic cardiomyopathy

ESC Heart Failure, Volume 12, Issue 2, Page 1256-1270, April 2025.
Abstract Background and aims The heart is a metabolic organ rich in mitochondria. The failing heart reprograms to utilize different energy substrates, which increase its oxygen consumption. These adaptive changes contribute to increased oxidative stress.
Qinghong Li, Max Homilius, Erin Achilles, Laura K. Massey, Victoria Convey, Åsa Ohlsson, Ingrid Ljungvall, Jens Häggström, Brittany Vester Boler, Pascal Steiner, Sharlene Day, Calum A. MacRae, Mark A. Oyama   +12 more
wiley   +1 more source