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Getting under the skin: the immunopathogenesis of Streptococcus pyogenes deep tissue infections

Linda Johansson1, Pontus Thulin, Donald E Low

  • 1Karolinska Institutet, Center for Infectious Medicine, Karolinska University Hospital Huddinge, Stockholm, Sweden.

Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America
|May 25, 2010
PubMed

Insights

Streptococcus pyogenes causes severe infections like toxic shock syndrome and necrotizing fasciitis. Intravenous immunoglobulin is explored as a potential therapy to improve outcomes for these dangerous conditions.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Immunology

Background:

  • Streptococcus pyogenes is a versatile pathogen causing mild to life-threatening illnesses in healthy individuals.
  • Invasive infections include streptococcal toxic shock syndrome (STSS) and necrotizing fasciitis, often co-occurring.
  • These severe infections significantly increase patient morbidity and mortality.

Purpose of the Study:

  • To review host-pathogen interactions in the tissue environment during invasive S. pyogenes infections.
  • To discuss the potential role of intravenous immunoglobulin (IVIG) as an adjunctive treatment.
  • To highlight strategies for managing severe streptococcal diseases.

Main Methods:

  • Literature review focusing on S. pyogenes pathogenesis.
  • Analysis of host-pathogen dynamics in deep-tissue infections.
  • Evaluation of existing data on IVIG efficacy in related conditions.

Main Results:

  • S. pyogenes employs various mechanisms to evade host defenses in the tissue milieu.
  • Co-infection of STSS and necrotizing fasciitis exacerbates disease severity.
  • Limited but promising data suggests IVIG may mitigate inflammatory responses and improve outcomes.

Conclusions:

  • Understanding host-pathogen interactions is crucial for combating severe S. pyogenes infections.
  • Intravenous immunoglobulin presents a potential adjunctive therapy option for STSS and necrotizing fasciitis.
  • Further clinical research is warranted to establish the definitive role of IVIG in these critical infections.

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