Results 41 to 50 of about 75,914 (267)

Oxidation of azaheterocycles by free and immobilized xanthine oxidase and xanthine dehydrogenase [PDF]

open access: yes, 1979
The objective of the study described in this thesis was to show that enzymes, especially immobilized enzymes, can be advantageously used in synthetic organic chemistry.In Chapter 1 enzymes are introduced and the advantages discussed when these highly ...
Tramper, J.
core  

Non‐Additive Criteria Assessment in Sustainability Evaluation of High Entropy Alloys: A Toxicity‐Weighted Framework

open access: yesAdvanced Engineering Materials, EarlyView.
Sustainability assessment requires methodologies that appropriately distinguish between additive and non‐additive material properties. A toxicity‐weighted scoring system is developed and applied that accounts for the disproportionate influence of highly toxic constituents through nonlinear weighting functions, providing more realistic estimates than ...
Seth Mehalic   +2 more
wiley   +1 more source

Propentofylline reduces glial scar development following gliotoxic damage in the rat brainstem

open access: yesArquivos de Neuro-Psiquiatria
Propentofylline is a xanthine derivative that depresses activation of glial cells, whose responses contribute to neural tissue damage during inflammation.
Eduardo Fernandes Bondan   +6 more
doaj   +1 more source

Dose-dependent effects of Allopurinol on human foreskin fibroblast cell and human umbilical vein endothelial cell under hypoxia [PDF]

open access: yes, 2015
Allopurinol, an inhibitor of xanthine oxidase, has been used in clinical trials of patients with cardiovascular and chronic kidney disease. These are two pathologies with extensive links to hypoxia and activation of the transcription factor hypoxia ...
Sun, Yu   +8 more
core   +1 more source

Atom‐Efficient Cerium‐Based Molecular Cages as Biocompatible Reactive Oxygen Scavengers

open access: yesAdvanced Healthcare Materials, EarlyView.
Discrete mixed‐valent cerium molecular cages organize accessible redox centers within confined coordination environments and scavenge superoxide, hydrogen peroxide, and hydroxyl radicals. Encapsulation of the lead cage in an ROS‐responsive DTP nanoplatform enables lesion‐associated delivery, attenuates macrophage oxidative stress and inflammation, and ...
Chao Li   +9 more
wiley   +1 more source

Synthesis, physical-chemical and biological properties of derivatives of 3-methyl-7-ethylxanthinyl-8-thioacetic acid hydrazide

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2018
A wide range of biological activity of natural xanthines stimulated the search of biologically active compounds among their synthetic analogues, which led to the creation of a number of medicines (Nihexynum, Proxyphyllinum, Protheobrominum, etc.), which ...
M. I. Romanenko   +4 more
doaj   +1 more source

Ionic Gating of Liquid‐Crystal‐Like Pteridine Assemblies Enables Tunable Light Scattering

open access: yesAdvanced Materials, EarlyView.
Tunable optical properties emerge through developmentally regulated ionic gating, which transforms disordered, ultraviolet (UV)‐absorbing organelles into concentrically ordered, liquid‐crystal‐like light scatterers. By integrating analyses of pteridine composition, potassium‐dependent assembly, hierarchical ultrastructure, and optical behavior, the ...
Sourabh Bera   +22 more
wiley   +1 more source

First case of hereditary xanthinuria in a Moroccan family

open access: yesPAMJ Clinical Medicine, 2019
The xanthinuria is a rare hereditary autosomal recessive disease. It is related to xanthine oxidase deficiency also known as xanthine dehydrogenase, an enzyme involved in the metabolism of purine bases.
Aicha Ezoubeiri   +4 more
doaj   +1 more source

SYNTHESISAND PHYSICAL-CHEMICAL PROPERTIES OF 8-AMINO-7-(2-HYDROXY-3-i-PROPOXYPROPYL-1)-3-METHYLXANTHINES

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2014
Introduction It has been foundearlier[1-5]that 8-substituted of 7-(2-hydroxy-3-R-oxypropyl-1)-3-methylxanthine show rather high diuretic, anti-inflammatory, analgesic, antioxidant and hypolipidemic action.Meanwhile, works of international researchers ...
M. I. Romanenko   +4 more
doaj   +1 more source

TRAIP Mediates Alcohol‐Induced Liver Injury through Regulating β‐catenin Ubiquitin Degradation via Direct Interaction

open access: yesAdvanced Science, EarlyView.
This study reveals that NF‐κB1‐driven TRAIP upregulation in ALD correlates with disease severity. Mechanistically, TRAIP directly binds β‐catenin via its CC domain and promotes its K48‐linked ubiquitination and degradation, which is independent of the GSK3β/β‐TrCP pathway.
Zhan Wu   +13 more
wiley   +1 more source

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