Results 41 to 50 of about 8,569 (252)

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

Safety and efficacy of feed additives consisting of vitamin B2 (98%) and vitamin B2 (80%) produced with Bacillus subtilis CGMCC 7.449 for all animal species (Chifeng Pharmaceutical Co., Ltd.)

EFSA Journal, Volume 23, Issue 2, February 2025.
Abstract Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) of EFSA was asked to deliver a scientific opinion on the safety and efficacy of vitamin B2 98% and vitamin B2 80% in the form of riboflavin produced by fermentation with a genetically modified strain of Bacillus ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Baltasar Mayo, Nicole Bozzi Cionci, Rosella Brozzi, Jaume Galobart, Orsolya Holczknecht, Paola Manini, Piera Valeri, Maria Vittoria Vettori, Fabiola Pizzo   +25 more
wiley   +1 more source

Molecular Design Leveraging Non‐Covalent Interactions for Efficient Light‐Emitting Organic Small Molecules

Advanced Functional Materials, Volume 35, Issue 2, January 9, 2025.
This review elucidates the design of leveraging non‐covalent interactions (NCIs) effect on light‐emitting organic small molecules to achieve highly efficient emission characteristics. Representative organic emitters ranging from ultraviolet to near‐infrared regions are listed and investigated.
Taehyun Kim, Giwon Shin, Taiho Park, Minjun Kim   +3 more
wiley   +1 more source

ELECTRON-DONOR AND -ACCEPTOR PROPERTIES OF BIOLOGICALLY IMPORTANT PURINES, PYRIMIDINES, PTERIDINES, FLAVINS, AND AROMATIC AMINO ACIDS.

Proceedings of the National Academy of Sciences of the United States of America, 1958
The recent discovery by Isenberg and Szent-Gy6rgyi1 of the formation, at neutral pH, of a tryptophan-riboflavin complex in which a riboflavin molecule has taken up one electron from the tryptophan and the possible important biological implications of ...
B. Pullman, A. Pullman
semanticscholar   +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

Coloration in a Praying Mantis: Color Change, Sexual Color Dimorphism, and Possible Camouflage Strategies

Ecology and Evolution, Volume 15, Issue 1, January 2025.
The present study investigates color change, background choice, sexual color dimorphism, and movement rates in a praying mantis, Stagmomantis limbata. Nymphs changed color over development in response to rearing container color. Adults showed sexual color dimorphisms, which could potentially reflect different camouflage strategies.
Leah Y. Rosenheim, Jay A. Rosenheim, Michael R. Maxwell   +2 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

Role of Weak Molecular Interactions in the Mechanism of Action of a Series of Antihelmintics

Molecules, 2000
Different physicochemical properties such as solute-solute and solute-solvent interactions, tautomerism, lipophilicity and solubility in water were determined for a serie of 6,7-diaryl-pteridines in order to relate those properties with their nematocide ...
Marisa Santo, Liliana Giacomelli, Mario Reta, Rosa Cattana, Antonio Chana, Juana Silber, Carmen Ochoa, Mercedes Rodriguez   +7 more
doaj   +1 more source

Plant Metabolic Engineering for Enhanced Nutrition and Food Security During Climate Uncertainty

Food and Energy Security, Volume 14, Issue 1, January/February 2025.
The integration of plant metabolic engineering techniques for enhancing crop nutrition and stress resilience. Central to the process is metabolic pathway enhancement, achieved through gene‐editing tools like CRISPR/Cas9, which enable targeted reprogramming of biosynthetic pathways.
Cengiz Kaya
wiley   +1 more source

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