Endogenous photosensitizers play a critical role in both beneficial and harmful light-induced
transformations in biological systems. Understanding their mode of action is essential for …

Pterins are an inseparable part of living organisms. Pterins participate in metabolic reactions
mostly as tetrahydropterins. Dihydropterins are usually intermediates of these reactions …

The oxidation of proteins and, in particular, of tryptophan (Trp) residues leads to chemical
modifications that can affect the structure and function. The oxidative damage to proteins in …

Proteins are the most abundant biomolecules in living organisms and tissues and are also
present in many natural and processed foods and beverages, as well as in pharmaceuticals …

Tyrosine (Tyr) is involved in the synthesis of neurotransmitters, catecholamines, thyroid
hormones, etc. Multiple pathologies are associated with impaired Tyr metabolism. Silver …

A polymeric photosensitizer was synthesized through covalent attachment of the natural
photosensitizer 6-carboxypterin (Cap) to a poly (allylamine hydrochloride)(PAH) polymer …

UVA radiation and visible light can lead to indirect damage to DNA, proteins, and lipids
through photosensitized reactions, where a molecule undergoes a photochemical alteration …

Abstract Resveratrol (3, 5, 4′-trihydroxystilbene, RSV) is a natural stilbene synthetized as
trans-isomer in plants exposed to oxidative stress. In order to understand the mechanism …

Photochemical reactions in cell DNA are induced in various organisms by solar UV radiation
and may lead to a series of biological responses to DNA damage, including apoptosis …

Damage caused to biological targets through sunlight photosensitized reaction is of
paramount importance due to their potential effects on human health. In these processes, a …