Results 61 to 70 of about 3,922 (190)

Colour Morphs as Alternative Solutions to the Trade‐Off Predicted by the Immuno‐Competence Handicap Hypothesis

Integrative Zoology, Volume 21, Issue 3, Page 639-651, May 2026.
In this study, we tested whether white and yellow morphs of the common wall lizard (Podarcis muralis) adopt alternative strategies shaped by the immuno‐competence handicap hypotheses (ICHH). We found that testosterone‐induced immune suppression was stronger in white males, while aggression decreased in both morphs.
Roberto Sacchi, Alan J. Coladonato, Stefano Scali, Marco A. L. Zuffi, Rupert Palme, Marco Mangiacotti   +5 more
wiley   +1 more source

Alloxazine derivatives as multifunctional agents for photodynamic therapy, cancer cell imaging, and cell proliferation inhibition

Photochemistry and Photobiology, Volume 102, Issue 3, Page 589-604, May/June 2026.
Alloxazine photosensitizers, molecularly engineered through sugar conjugation and methoxy substitution to enhance solubility, photodynamic potency, and fluorescence, enable image‐guided photodynamic therapy while inhibiting cancer cell growth in the absence of photoactivation.
Rubej R. Khan, Sourav Kanti Seth, Reshma Mathew, Nitza V. Falcón‐Cruz, Chris Acquah, Steffen Jockusch, Liraz Levi, Carlos E. Crespo‐Hernández   +7 more
wiley   +1 more source

Safety and efficacy of a feed additive consisting of riboflavin 80% (vitamin B2) produced with Saccharomyces cerevisiae ATCC SD‐8628 for all animal species (Amyris Inc)

EFSA Journal, Volume 24, Issue 5, May 2026.
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 riboflavin 80% (vitamin B2) produced by Saccharomyces cerevisiae ATCC SD‐8628 as a nutritional feed additive for all animal species. The
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, Giovanna Martelli, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Katerina Theodoridou, Andrey Yurkov, Baltasar Mayo, Rosella Brozzi, Jaume Galobart, Elisa Pettenati, Maria Vittoria Vettori, Fabiola Pizzo   +23 more
wiley   +1 more source

A Modified Microbiological Method for Determination of Folate Levels in Erythrocyte and Plasma

Pteridines, 2007
Pteridines are natural heterocyclic compounds and they are generally divided into two main groups which are denominated as conjugated and unconjugated pteridines.
Sipahi Hande, Baydar Terken, Ozalp Meral, Sahin Gonul   +3 more
doaj   +1 more source

Pteridines and male quality in a dragon lizard

, 2018
Data for the manuscript entitled "Seeing red: pteridines and male quality in a dragon lizard" published in the Biological Journal of the Linnean ...
Katrina Rankin, Martin Whiting, Dani Chandrasoma, Thomas Merkling   +3 more
core   +1 more source

Neopterin-induced Suppression of Erythropoietin Production In Vitro

Pteridines, 1995
The production of neopterin increases in several diseases with activation of the ceIlular immune response. As previously shown serum concentrations of neopterin are inversely correlated with blood hemoglobin concentrations in the anemia of hematological ...
Schobersberger W., Jelkmann W., Fandrey J., Frede S., Wachter H., Fuchs D.   +5 more
doaj   +1 more source

Urinary and Serum Pteridines in Liver Diseases

Pteridines, 1996
The aim of this mini-review is to show the usefulness of pteridines as clinical markers. We assayed urinary neopterin and xanthopterin levels in liver disease. Total pterins were oxidized by active carbon to yield xanthopterin.
Mazda Toshio, Iino Teruhiko, Tsusué Motoo   +2 more
doaj   +1 more source

Syntheses of highly functionalised 6-substituted pteridines

, 2003
Methods for the synthesis of polyfunctional 6-substituted pteridines from the corresponding 6-aldehydes are described. Alkene, ester, ketone, amide, cyano, oxime, bromo, methoxy and dihydroxy functional groups have all been introduced principally through
Guiney, D., Gibson, C.L., Suckling, C.J.
core   +4 more sources

39th International Winter-Workshop Clinical, Chemical and Biochemical Aspects of Pteridines and Related Topics ; Innsbruck, February 25th - 28th, 2020: Abstracts

, 2020
Gostner, Johanna M., Harlander, Alexandra, Mindus, Claire, Fuchs, Dietmar, Kjaer, Joergen, Kunze, Wolfgang, van Staaveren, Nienke, Geisler, Simon, Forsythe, P., Shoveller, Anna K.   +9 more
core   +2 more sources

Characterization of Underivatized Pterins by Laser Desorption Fourier Transfonn Mass Spectrometry

Pteridines, 1993
Laser desorption FfMS provides a powerful method for examining the structures of underivatized pteridines. (M + Na)+ and (M + K)+ ions are generated by laser desorption and can be used to determine molecular weights. The negative ion spectra provide more
Jacobson K. Bruce, Hettich Robert L.
doaj   +1 more source