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Related Experiment Videos

Oxidative stress and experimental carcinogenesis.

Mohammad Athar1

  • 1Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110 062, India. ma493@columbia.edu

Indian Journal of Experimental Biology
|February 18, 2003
PubMed
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Oxygen free radicals (OFR) play a significant role in all stages of carcinogenesis, from initiation to progression. Antioxidants and radical scavengers can inhibit these cancer-promoting processes.

Area of Science:

  • Oncology
  • Biochemistry
  • Free Radical Biology

Background:

  • Oxygen free radicals (OFR) are highly reactive molecules with implications in various biological processes.
  • Carcinogenesis, the development of cancer, is a complex process influenced by multiple factors.
  • The skin serves as a primary model system for understanding cancer development due to its accessibility and well-studied mechanisms.

Purpose of the Study:

  • To review the current knowledge on the involvement of oxygen free radicals (OFR) in carcinogenesis.
  • To highlight the role of OFR in skin cancer development using skin model systems.
  • To briefly discuss the role of OFR in other organs.

Main Methods:

  • Literature review of scientific articles on oxygen free radicals and carcinogenesis.

Related Experiment Videos

  • Analysis of evidence supporting the role of OFR in cancer initiation, promotion, and progression.
  • Focus on skin model systems while including data from other organs.

    • Main Results:

    • OFR are implicated in the initiation stage of carcinogenesis through various reaction cascades.
    • Substantial evidence links OFR to tumor promotion, including the effects of radical-generating compounds and antioxidants.
    • OFR contribute to cancer progression, with radical-generating compounds enhancing malignant conversion.

    Conclusions:

    • Oxygen free radicals are critically involved in all stages of carcinogenesis.
    • Understanding OFR mechanisms in skin cancer provides insights applicable to other organs.
    • Modulating OFR activity through antioxidants presents a potential strategy in cancer prevention and treatment.