Folates (vitamin B9) are essential components of our diet and our gut microbiota. They are
omnipresent in our cells and blood. Folates are necessary for DNA synthesis, methylation …

Abstract UV-A radiation (320–400 nm), recognized as a class I carcinogen, induces damage
to the DNA molecule and its components through different mechanisms. Pterin derivatives …

Given the prevalence of fluorescence spectroscopy in biological systems, and the
prevalence of pterin derivatives throughout biological systems, presented here is an …

UV-A radiation (320–400 nm) induces modifications to different biomolecules through
photosensitized reactions. Oxidized pterins are efficient photosensitizers that accumulate in …

Microcapsules (MC) made with gum arabic (GA) as shell material without and with β-
carotene (βc) as core material were prepared by the spray-drying technique. The effect of …

The photochemistry of the DNA biomacromolecule is an issue of paramount importance as it
is part of the etiology of skin cancer development, being ultraviolet sunlight radiation the …

Dihydrobiopterin (H 2 Bip) and biopterin (Bip) accumulate in the skin of patients suffering
from vitiligo, whose lack of melanin causes a deficient protection against UV radiation. H 2 …

A new fluorescent compound was isolated from UVA‐irradiated aqueous solutions
containing pterin (Ptr) and 2′ deoxythymidine (dT) in anaerobic conditions. Pterins are …

Pterin derivatives are heterocyclic compounds which are present in different biological
systems. Neutral aqueous solutions of pterins present acid–base and keto–enol equilibria …

Light absorption by a molecule called photosensitizer (PS) in the presence of molecular
oxygen triggers the generation of reactive oxygen species (ROS), which can degrade target …