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Updated: Apr 20, 2026

Implementation of a Permeable Membrane Insert-based Infection System to Study the Effects of Secreted Bacterial Toxins on Mammalian Host Cells
09:25

Implementation of a Permeable Membrane Insert-based Infection System to Study the Effects of Secreted Bacterial Toxins on Mammalian Host Cells

Published on: August 19, 2016

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[Streptococcus pyogenes pathogenic factors]

Ph Bidet1, S Bonacorsi1

  • 1Université Paris-Diderot, PRES Sorbonne-Paris-Cité, 46, rue Henri-Huchard, 75018 Paris, France; Service de microbiologie, hôpital Robert-Debré (AP-HP), 48, boulevard Sérurier, 75019 Paris, France.

Archives De Pediatrie : Organe Officiel De La Societe Francaise De Pediatrie
|December 3, 2014
PubMed

Insights

Group A Streptococcus (GAS) causes diverse infections due to complex interactions between bacterial factors and host immunity. GAS adapts to immune pressure, leading to asymptomatic carriage or severe invasive disease.

Area of Science:

  • Microbiology
  • Immunology
  • Genomics

Context:

  • Group A Streptococcus (GAS) exhibits varied pathogenicity, from mild pharyngitis to severe invasive infections like necrotizing fasciitis.
  • Clinical manifestations differ significantly among individuals infected with the same GAS strain.

Purpose:

  • To explore the complex interplay between bacterial virulence factors, infection dynamics, and host immune responses in determining GAS pathogenicity.
  • To understand how GAS adapts to host immune pressure, influencing disease outcomes.

Summary:

  • GAS pathogenicity is shaped by a dynamic interaction involving bacterial virulence factors and the host immune system.
  • Comparative genomics reveals GAS strategies to evade or overcome host immunity, including downregulation for carriage or overexpression for invasive disease.
  • The host's immune system plays a critical role in modulating the clinical outcome of GAS infections.

Impact:

  • Provides insights into the molecular mechanisms underlying GAS pathogenesis and disease spectrum.
  • Advances understanding of host-pathogen interactions in streptococcal infections.
  • Informs potential therapeutic strategies targeting GAS virulence and host immune modulation.

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