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Free radicals and activated oxygen.

J P Famaey

    European Journal of Rheumatology and Inflammation
    |January 1, 1982
    PubMed
    Summary

    Reactive oxygen species, like superoxide anion and hydrogen peroxide, are linked to inflammation and aging. Enzymes such as superoxide dismutases (SOD) help neutralize these harmful molecules, offering potential therapeutic benefits for inflammatory diseases.

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    Area of Science:

    • Biochemistry
    • Cell Biology
    • Immunology

    Background:

    • Reactive oxygen species (ROS), including superoxide anion (O2-), hydrogen peroxide (H2O2), and hydroxyl radical (OH.), are byproducts of oxygen metabolism.
    • These ROS are highly reactive and can damage biological systems, necessitating evolved defense mechanisms like superoxide dismutases (SOD), catalase, and peroxidases.
    • ROS production is elevated in phagocytic cells during inflammation and is implicated in aging and toxic reactions.

    Purpose of the Study:

    • To explore the role of reactive oxygen species in biological processes, particularly inflammation.
    • To investigate the anti-inflammatory properties of enzymes that scavenge ROS, such as SOD.
    • To examine the therapeutic potential of SOD in treating inflammatory and rheumatic diseases.

    Main Methods:

    • Review of literature on ROS production and scavenging mechanisms.
    • Analysis of the role of ROS in cellular processes like phagocytosis and inflammation.
    • Examination of studies investigating the efficacy of SOD (orgotein) in treating rheumatic conditions.

    Main Results:

    • Phagocytic cells produce significant amounts of ROS, contributing to inflammation.
    • The arachidonic acid pathway also generates oxidizing radicals during inflammation.
    • Superoxide anion (O2-) can depolymerize hyaluronic acid, affecting synovial fluid properties.
    • Bovine SOD (orgotein) has demonstrated anti-inflammatory effects and is used in treating rheumatic diseases.
    • Some anti-inflammatory compounds may work by inhibiting ROS production or scavenging ROS.

    Conclusions:

    • Reactive oxygen species play a significant role in inflammation, aging, and toxic reactions.
    • Enzymes like SOD are crucial defense mechanisms against ROS-induced damage.
    • SOD, particularly orgotein, shows promise as an anti-inflammatory agent for rheumatic diseases.

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