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[Oxidative stress and infectious pathology]

D Romero Alvira1, L Guerrero Navarro, M A Gotor Lázaro

  • 1Departement de Biochimie Clinique et de Diabétologie Experimentale, CMU, Genève, Switzerland.

Anales De Medicina Interna (Madrid, Spain : 1984)
|March 1, 1995
PubMed
Summary

Pathogens cause cell damage and inflammation through oxidative stress. While the body

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Area of Science:

  • Infectious disease pathology and oxidative stress mechanisms.

Background:

  • Pathogenic organisms can act as pro-oxidant agents, inducing cell death and tissue damage.
  • Cellular defense mechanisms combat pathogens using reactive oxygen species (ROS), leading to oxidative stress.
  • This defense response can paradoxically cause cell damage, triggering inflammation.

Purpose of the Study:

  • To analyze the dual role of oxidative stress in infections and inflammation.
  • To explore the involvement of iron in oxidative stress during infection.
  • To examine the contribution of inflammatory response versus pathogen oxidative potential to overall oxidative damage in infectious diseases.

Main Methods:

  • Literature review of studies on oxidative stress in infectious diseases.
  • Analysis of the mechanisms linking infection, inflammation, and oxidative damage.
  • Examination of specific pathologies like sickle cell anemia/malaria and AIDS in relation to oxidative stress.

Main Results:

  • Oxidative stress exhibits a dual role: protecting against pathogens while causing tissue damage and inflammation.
  • Iron's participation in generating ROS also reflects this duality in infectious contexts.
  • Oxidative damage in infections is predominantly driven by the inflammatory response, not solely by the pathogen's oxidative capacity.

Conclusions:

  • Oxidative stress is a complex factor in infectious diseases, contributing to both defense and pathology.
  • The inflammatory response plays a critical role in mediating oxidative damage during infections.
  • Understanding this duality is crucial for managing infectious and inflammatory conditions.

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