Oxygen-derived free radicals and related oxidants are ubiquitous and short-lived
intermediates formed in aerobic organisms throughout life. These reactive species …

Nitric oxide (NO) is a small free radical with critical signaling roles in physiology and
pathophysiology. The generation of sufficient NO levels to regulate the resistance of the …

Peroxynitrite is a short-lived and reactive biological oxidant formed from the diffusion-
controlled reaction of the free radicals superoxide (O2•–) and nitric oxide (• NO). In this …

In this review we provide an analysis of the biochemistry of peroxynitrite and tyrosine
nitration. Peroxynitrite is the product of the diffusion-controlled reaction between superoxide …

Functional peptides constitute a class of small molecular peptide chains with specific
functions in biology and are typically composed of various amino acids. The chemical …

The hypothesis of the research was the assumption, that manganese nanoparticles can
affect the body in the same way as macromolecules. Their smaller size and greater …

Previous work showed that peptides from duck eggs incubated for 15 D presented high total
antioxidant activities. Here, this work explore the antioxidant activities of different segments …

The widespread interest in free radicals in biology extends far beyond the effects of ionizing
radiation, with recent attention largely focusing on reactions of free radicals derived from …

Megakaryocytes are the main members of the hematopoietic system responsible for
regulating vascular homeostasis through their progeny platelets, which are generally known …

Embryos undergo pre-gastrulation cleavage cycles to generate a critical cell mass before
transitioning to morphogenesis. The molecular underpinnings of this transition have …