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[Reactive oxygen].

Eisuke F Sato1, Masayasu Inoue

  • 1Department of Biochemistry and Molecular Pathology, Osaka City University Medical School, 1-4-3 Asahimachi, Abeno, Osaka 545-8585, Japan. sato@med.osaka-cu.ac.jp

Nihon Eiseigaku Zasshi. Japanese Journal of Hygiene
|March 1, 2002
PubMed
Summary
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Mammalian tissues rely on mitochondria for ATP production using oxygen. However, this process generates harmful reactive oxygen species, which can damage cells and cause disease.

Area of Science:

  • Biochemistry
  • Cellular Biology
  • Physiology

Context:

  • Mitochondria are crucial for energy production in mammalian tissues via oxidative phosphorylation.
  • Significant oxygen consumption is necessary for adenosine triphosphate (ATP) regeneration.
  • Physiological conditions involve the generation of reactive oxygen species (ROS) from oxygen metabolism.

Purpose:

  • To highlight the dual role of oxygen in cellular energy production and ROS generation.
  • To explain the origin and implications of reactive oxygen species in biological systems.

Summary:

  • Mammalian cells utilize oxidative phosphorylation in mitochondria to generate ATP, requiring substantial oxygen intake.
  • A byproduct of this oxygen metabolism is the formation of superoxide radicals and related reactive oxygen species (ROS).

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  • These ROS can interact with cellular components, potentially disrupting normal function and contributing to disease pathogenesis.

    • Impact:

    • Understanding ROS formation is vital for comprehending cellular dysfunction and disease development.
    • This knowledge may inform strategies for mitigating oxidative stress.
    • Provides a foundation for research into antioxidant therapies and disease prevention.