TITLE

oxygen radical

PUB. DATE
January 2005
SOURCE
Taber's Cyclopedic Medical Dictionary;2005, p1559
SOURCE TYPE
Book
DOC. TYPE
Reference Entry
ABSTRACT
A definition of the term "oxygen radical" is presented. The term refers to hydrogen peroxide or the superoxide radical produced by the incomplete reduction of oxygen. The release of oxygen free radicals during the "respiratory burst" phase of phagocytosis by neutrophils and macrophages during the inflammatory process is discussed. They are believed to cause much of the cellular damage involved in adult respiratory distress syndrome.
ACCESSION #
21239076

 

Related Articles

  • Sunlight and free radicals. Tidwell, Thomas // Nature Chemistry;Aug2013, Vol. 5 Issue 8, p637 

    The article offers the author's insights on the proposed photochemical free-radical formation by British chemists Arthur Downess and Thomas Blunt. The author mentions the photochemical experiments of Downes and Blunt regarding the effect of light on protoplasm and oxalic acid. He mentions that...

  • Free Radical Production, Antioxidant Capacity, and Oxidative Stress Response Signatures in Fibroblasts From Lewis Dwarf Rats: Effects of Life Span-Extending Peripubertal GH Treatment. Ungvari, Zoltan; Sosnowska, Danuta; Podlutsky, Andrej; Koncz, Peter; Sonntag, William E.; Csiszar, Anna // Journals of Gerontology Series A: Biological Sciences & Medical ;May2011, Vol. 66A Issue 5, p501 

    The discovery that in invertebrates, disruption of the insulin/insulin-like growth factor (IGF)-1 pathway extends life span and increases resistance to oxidative injury led to the hypothesis that IGF-1 signaling may play a role in regulating cellular reactive oxygen species production, oxidative...

  • Mechanism of Lipid Radical Formation Following Exposure of Epidermal Homogenate to Ultraviolet Light. Ogura, Ryohei; Sugiyama, Masayasu; Nishi, Juichi; Haramaki, Nobuya // Journal of Investigative Dermatology;Dec91, Vol. 97 Issue 6, p1044 

    It has been suggested that oxygen free radicals are important mediators of lipid peroxidation in the epidermis exposed to ultraviolet (UV) light. However, it is not clear whether it is the superoxide anion radical (O2-) or the hydroxyl radial (.OH) that plays the major role in producing the...

  • The role of free radicals in ethiopathogenesis of diseases. Pala, Funda Sibel; G├╝rkan, Hakan // Advances in Molecular Biology;Apr2009, Vol. 2 Issue 1, p1 

    Free radicals can be defined as atoms or molecules containing one or more unpaired electrons in their orbitals. Their formation occurs continuously in the cells as a consequence of both enzymatic and nonenzymatic reactions. It has been estimated that the average person has around 10000-20000...

  • HealthWAVES: THE ANTIOXIDANT ARMY. Lewis, Carolyn; Woolf, Kathleen // Swimming World;Oct2007, Vol. 48 Issue 10, p27 

    This article says that exercise causes the development of free radicals in the human body that go about destroying healthy cells and that a diet rich in antioxidants can help prevent the damage. Dietary advice is offered for three meals a day and snacks and include fruits and vegetables, certain...

  • A Sensitive In vitro Spectrophotometric Hydrogen Peroxide Scavenging Assay using 1,10-Phenanthroline. Mukhopadhyay, Debanjan; Dasgupta, Pinakpani; Roy, Debalina Sinha; Palchoudhuri, Shauroseni; Chatterjee, Ipsita; Ali, Shahnaz; Dastidar, Sujata Ghosh // Free Radicals & Antioxidants;Jan-Jun2016, Vol. 6 Issue 1, p124 

    Introduction: Hydrogen peroxide (H2O2) is a biologically important, non-radical reactive oxygen species (ROS) that can influence several cellular processes. Ability of anti-oxidants to scavenge H2O2 can be measured by several methods but all the methods are suffering from several lacunae due to...

  • Radical!  // Joe Weider's Muscle & Fitness;Dec94, Vol. 55 Issue 12, p36 

    Notes the impact of free radicals on aging and certain diseases. Definition of free radicals; Body mechanism against free radicals; Functions of antioxidant chemicals to keep free radicals in check; Health risks of excessive free radicals.

  • RIP VAN WINKLE. Horgan, John // Newsweek (Pacific Edition);10/10/2005 (Pacific Edition), Vol. 146 Issue 15, p46 

    Reports that scientists studying animal hibernation have discovered that much of the damage caused by oxygen deprivation is a result of residual oxygen in the body, which produces harmful compounds called free radicals. How the findings have inspired a strategy to minimize the effect; Efforts of...

  • RIP VAN WINKLE. Horgan, John // Newsweek (Atlantic Edition);10/10/2005 (Atlantic Edition), Vol. 146 Issue 15, p60 

    Reports that scientists studying animal hibernation have discovered that much of the damage caused by oxygen deprivation is a result of residual oxygen in the body, which produces harmful compounds called free radicals. How the findings have inspired a strategy to minimize the effect; Efforts of...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics