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Virus-induced formation of reactive oxygen intermediates in phagocytic cells

E Peterhans1, M Grob, T Bürge

  • 1Department of Virology, University of Berne, Switzerland.

Free Radical Research Communications
|January 1, 1987
PubMed

Insights

Viruses can cause disease through cell damage or immune responses. This study identifies two ways viruses trigger reactive oxygen intermediates (ROI) in immune cells, potentially explaining viral toxicity.

Area of Science:

  • Virology
  • Immunology
  • Cell Biology

Background:

  • Viruses induce disease via diverse mechanisms, including impairing cell function and causing cell death (cytopathic effect).
  • Host immune responses, such as those seen in measles and rubella, also contribute to viral pathogenesis.
  • Virus-immune complexes can lead to conditions like glomerulonephritis and arthropathy.

Purpose of the Study:

  • To elucidate mechanisms by which viruses activate reactive oxygen intermediate (ROI) generation in polymorphonuclear leukocytes.
  • To differentiate between immune-mediated and direct viral activation of ROI.

Main Methods:

  • Investigated viral activation of ROI generation in polymorphonuclear leukocytes.
  • Differentiated between antibody-mediated and direct viral antigen-mediated activation pathways.

Main Results:

  • Identified two distinct mechanisms of viral ROI activation in phagocytes.
  • The first mechanism is antibody-dependent and immune-controlled.
  • The second mechanism involves direct viral antigen interaction with the phagocyte plasma membrane.

Conclusions:

  • Direct activation of ROI by paramyxo- and influenza viruses may contribute to their in vivo toxicity.
  • Understanding these viral activation pathways is crucial for comprehending viral pathogenesis and host-virus interactions.

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