Reactive Oxygen Species

Molecules or ions formed by the incomplete one-electron reduction of oxygen. These reactive oxygen intermediates include SINGLET OXYGEN; SUPEROXIDES; PEROXIDES; HYDROXYL RADICAL; and HYPOCHLOROUS ACID. They contribute to the microbicidal activity of PHAGOCYTES, regulation of SIGNAL TRANSDUCTION and GENE EXPRESSION, and the oxidative damage to NUCLEIC ACIDS; PROTEINS; and LIPIDS.

Year introduced: 1993

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Tree Number(s): D01.339.431, D01.650.775

MeSH Unique ID: D017382

Entry Terms:

• Oxygen Species, Reactive
• Active Oxygen
• Oxygen, Active
• Oxygen Radicals
• Pro-Oxidants
• Pro Oxidants

See Also:

• Oxygen Radical Absorbance Capacity
• Free Radicals
• Oxidative Stress

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Free Radicals
Reactive Oxygen Species
Hydroxyl Radical
Hypochlorous Acid
Peroxides
Artemisinins +
Carbamide Peroxide
Hydrogen Peroxide
Lipid Peroxides
Prostaglandin Endoperoxides +
Superoxides
tert-Butylhydroperoxide
Tetraoxanes
Singlet Oxygen

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Oxygen Compounds
Reactive Oxygen Species