Results 51 to 60 of about 8,420 (250)

Pterin function in bacteria

Pteridines, 2017
Pterins are widely conserved biomolecules that play essential roles in diverse organisms. First described as enzymatic cofactors in eukaryotic systems, bacterial pterins were discovered in cyanobacteria soon after.
Feirer Nathan, Fuqua Clay
doaj   +1 more source

First Synthesis of a Natural Isoxanthopterin Glycoside, Asperopterin-A [PDF]

, 2012
The key precursor, N-2-(N,N-dimethylaminomethylene)-6-hydroxymethy1-8-methyl-3[2-(4-nitrophenypethyl]-7-xanthopterin (9) was efficiently prepared from 2,5-diamino-6-methylam1no-3H-pyrimidin-4-one (3) and ethyl 3-(tert-butyldimethylsilyloxy)-2 ...
Ejiri, Kazumasa, Hanaya, Tadashi, Yamamoto, Hiroshi   +2 more
core   +1 more source

Neopterin as a Tool for Primate Ecoimmunology: Current Knowledge, Practical Application, and New Directions From Captivity to the Wild

American Journal of Primatology, Volume 87, Issue 10, October 2025.
Neopterin is a sensitive and specific biomarker of intracellular pathogen infection and chronic inflammation, and affected by environmental, life‐history, and sex‐contextual factors. This review offers best‐practice guidelines and practical advice on sample collection, storage, and analysis in primates when used for ecoimmunological conservation and ...
Verena Behringer, Caroline Deimel
wiley   +1 more source

Alternative cancer therapy through modeling pteridines photosensitizer quantum yield singlet oxygen production using swarm-based support vector regression and extreme learning machine

Cogent Engineering
Photodynamic cancer therapy circumvents the major side effects associated with the conventional cancer treatment methods, such as chemotherapy, surgery and exposure to radiation.
Nahier Aldhafferi
doaj   +1 more source

Theoretical study on the relative energies of cationic pterin tautomers

Pteridines, 2015
Pterins are heterocyclic molecules of biological importance that contain several basic sites. These molecules can be protonated in aqueous solution resulting in a wide variety of structures that differ in their site of protonation and tautomeric form. In
Nekkanti Sindhura, Martin Christopher B.
doaj   +1 more source

Tetrahydrobiopterin Deficiency: From Phenotype to Genotype [PDF]

, 2017
As a result of the selective screening worldwide during the last 18 years, approximately 250 patients with tetrahydrobiopterin deficiency were discovered.
Blau, Nenad, Dhondt, Jean-Louis, Heizmann, Claus W., Thöny, Beat   +3 more
core  

The Role of Neopterin and Interleukin‐6 Detection in Saliva and Plasma in Oral and Oropharyngeal Cancer Patients: A Prospective Study

Clinical and Experimental Dental Research, Volume 11, Issue 5, October 2025.
ABSTRACT Objectives The incidence of oral and oropharyngeal cancer is continually rising and affects increasingly younger patients. Consequently, many studies focus on early diagnosis using appropriate biomarkers. Neopterin and interleukin‐6 (IL‐6) are promising predictive and prognostic markers of immune response activation, both systemic and local ...
Lenka Šašková, Peter Tvrdý, Bohuslav Melichar, Josef Tomandl, Jana Zapletalová, Michal Mozol'a, Petr Michl, David Král, Richard Pink   +8 more
wiley   +1 more source

Release of Neopterin, PMN Elastase and Terminal Complement Complexes by Orthotopic Liver Transplantation with and without the Use of Veno-venous Bypass

Pteridines, 1998
Aim: The aim of the study was to determine whether orthotopic liver transplantation leads to the activation of macrophages, neutrophils and complement.
Tomasdottir H., Rønholm E., Bengtson JP, Bengtsson A.   +3 more
doaj   +1 more source

Genomic Characterisation of Limosilactobacillus fermentum CRL2085 Unveiling Probiotic Traits for Application in Cattle Feed

Environmental Microbiology Reports, Volume 17, Issue 5, October 2025.
A comprehensive genomic and phenotypic analysis of Limosilactobacillus fermentum CRL2085 revealed key probiotic and nutritional traits supporting its safe application in cattle feed. The strain harbors genes for stress tolerance, adhesion, exopolysaccharide production, and B‐vitamin biosynthesis, and efficiently metabolizes plant‐derived carbohydrates,
Cecilia M. Aristimuño Ficoseco, Daniele Chieffi, Marco Montemurro, Annarita Bavaro, Carlo G. Rizzello, Maria E. F. Nader‐Macias, Silvina Fadda, Francesca Fanelli, Vincenzina Fusco, Graciela M. Vignolo   +9 more
wiley   +1 more source

Soluble Fas ligand and neopterin in patients with systemic and cutaneous discoid lupus erythematosus

Pteridines, 2000
Evidence accumulates suggesting that the pathogenesis in systemic lupus erythematosus (SLE) is associated with modulations in the Fas/FasL system. Serum concentrations of soluble Fas ligand (sFasL) were found to be elevated in patients with SLE.
Wirleitner Barbara, Kowald Elisabeth, Widner Bernhard, Ortner Ulrike, Baier-Bitterlich Gabriele, Sepp Norbert, Fuchs Dietmar   +6 more
doaj   +1 more source