reactive oxygen species


reactive oxygen species
Oxygen-containing radical or reactive ions such as superoxide, singlet oxygen and hydroxyl radicals, the product of the respiratory burst in phagocytes and responsible for bacterial killing as well as incidental damage to surrounding tissue.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Reactive oxygen species — (ROS) are ions or very small molecules that include oxygen ions, free radicals, and peroxides, both inorganic and organic. They are highly reactive due to the presence of unpaired valence shell electrons.ROS form as a natural byproduct of the… …   Wikipedia

  • reactive oxygen species — biologically active, partially reduced derivatives of molecular oxygen (O2), including the superoxide radical, hydrogen peroxide, and the hydroxyl radical. They are produced by normal metabolic processes and may also be produced by the absorption …   Medical dictionary

  • Reactive nitrogen species — Reactions leading to generation of Nitric Oxide and Reactive Nitrogen Species. From Novo and Parola, 2008.[1] Reactive nitrogen species (RNS) are a family of antimicrobial molecules derived from …   Wikipedia

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  • Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …   Wikipedia

  • oxygen — oxygenic /ok si jen ik/, oxygenous /ok sij euh neuhs/, adj. oxygenicity /ok si jeuh nis i tee/, n. /ok si jeuhn/, n. Chem. a colorless, odorless, gaseous element constituting about one fifth of the volume of the atmosphere and present in a… …   Universalium

  • Singlet oxygen — is the common name used for the two metastable states of molecular oxygen (O2) with higher energy than the ground state triplet oxygen [cite journal title = Physical and chemical properties of singlet molecular oxygen author = David R. Kearns… …   Wikipedia

  • Compounds of oxygen — Water (H2O) is the most familiar oxygen compound The oxidation state f oxygen is −2 in almost all known compounds of oxygen. The oxidation state −1 is found in a few compounds such as peroxides. Compounds containing oxygen in other oxidation… …   Wikipedia

  • Forme Réactive de l'Oxygène — Radical (chimie) Pour les articles homonymes, voir Radical. Un radical (souvent appelé radical libre) est une entité chimique possédant un ou plusieurs électrons non appariés sur sa couche externe. Il se note par un point. La présence d un… …   Wikipédia en Français

  • ROS — Reactive Oxygen Species (Academic & Science » Chemistry) Reactive Oxygen Species (Academic & Science » Chemistry) * Return On Sales (Business » General) * Recreation Opportunity Spectrum (Community » Sports) * Review of systems (Medical »… …   Abbreviations dictionary


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