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Oxidative stress and living cells

G Gille1, K Sigler

  • 1Institute of Botany, Bonn, Germany.

Folia Microbiologica
|January 1, 1995
PubMed
Summary

Reactive oxygen species (ROS), both radical and nonradical, impact cells and organisms. This review details their chemistry, biological effects, and cellular defense mechanisms, with implications for health.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Toxicology

Background:

  • Reactive oxygen species (ROS) are byproducts of aerobic metabolism.
  • ROS encompass both radical and nonradical forms, such as hydrogen peroxide.
  • Their production and effects are central to cellular function and disease.

Purpose of the Study:

  • To review the chemical and biochemical properties of ROS.
  • To survey the harmful molecular and cellular effects of ROS.
  • To examine cellular and organismal defense mechanisms against ROS and their health implications.

Main Methods:

  • Literature review of chemical reactions and biochemical pathways related to ROS.
  • Analysis of molecular damage (protein oxidation, lipid peroxidation, DNA damage) caused by ROS.
  • Survey of cellular responses, including enzyme systems, signal transduction, and gene expression.

Main Results:

  • ROS interact with metals and scavengers, influencing their reactivity.
  • Harmful effects include molecular damage and disruption of cellular functions.
  • Cells and organisms possess enzyme systems for ROS production and removal.

Conclusions:

  • Understanding ROS chemistry and biology is crucial for comprehending cellular damage.
  • Cellular defense mechanisms are vital for mitigating ROS-induced harm.
  • ROS dysregulation has significant implications for plant, animal, and human health.

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