Peroxynitrite: A putative cytotoxin

Demiryurek A., Cakici I., Kanzik I.

PHARMACOLOGY & TOXICOLOGY, vol.82, no.3, pp.113-117, 1998 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Review
  • Volume: 82 Issue: 3
  • Publication Date: 1998
  • Doi Number: 10.1111/j.1600-0773.1998.tb01408.x
  • Journal Indexes: Science Citation Index Expanded
  • Page Numbers: pp.113-117


In recent years it has become apparent that peroxynitrite, which is one of the toxic metabolites originating from the reaction of nitric oxide and superoxide presents a number of pathologic states in which free radicals are thought to be involved. Peroxynitrite is capable of oxidizing a wide variety of biomolecules including plasma, proteins, lipids, carbohydrates and nucleic acids. Peroxynitrite is involved in the hydroxylation of aromatic compounds and acts as a nitrating agent. It modifies free or protein-associated tyrosine residues to give nitrotyrosines, leaving a marker detectable in vivo. Peroxynitrite has been implicated in the pathophysiology of a variety of diseases including inflammation, atherosclerosis, arthritis, endotoxemia, ischaemia-reperfusion injury, or acute respiratory distress syndrome. Development of specific per oxynitrite scavengers may provide new approaches for the effective treatment of these disease states.