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Updated: Jan 18, 2026

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Advances in Understanding the Pathogenesis of Clostridioides difficile Infection.

Anna M Seekatz1, Michael C Abt2

  • 1Department of Biological Sciences, Clemson University, 190 Collings Street, LSF 157A, Clemson, SC 29634, USA.

Infectious Disease Clinics of North America
|September 7, 2025
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Summary
This summary is machine-generated.

Clostridioides difficile infection (CDI) is a major cause of infectious colitis. This review explores how C. difficile metabolism, gut microbiota interactions, and virulence gene regulation impact CDI pathogenesis and disease development.

Keywords:
Clostridioides difficileGut microbiotaPathogenicityToxin

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Gastroenterology

Background:

  • Clostridioides difficile infection (CDI) is a significant cause of infectious colitis in the United States.
  • Susceptibility to CDI is linked to disruptions in the gut microbiota.
  • C. difficile pathogenicity involves toxin production and spore formation for dissemination.

Purpose of the Study:

  • To review the pathogenic aspects of Clostridioides difficile.
  • To focus on recent data regarding mechanisms modulating colonization and toxin-mediated disease in CDI.
  • To highlight the interplay between C. difficile metabolism, virulence gene regulation, and host-microbe interactions.

Main Methods:

  • Literature review of recent data on C. difficile pathogenesis.
  • Analysis of mechanisms regulating virulence genes.
  • Examination of C. difficile metabolism and interactions with the gut microbiota.

Main Results:

  • Virulence gene regulation is interconnected with C. difficile metabolism.
  • Interactions with other gut microbes influence C. difficile pathogenicity.
  • Recent data reveals additional mechanisms modulating CDI colonization and disease.

Conclusions:

  • Understanding C. difficile pathogenicity requires examining its metabolism, virulence regulation, and microbial interactions.
  • Further research into these mechanisms can inform strategies for preventing and treating CDI.
  • Perturbation of the gut microbiota is a key factor in CDI susceptibility.