Gut microbiome and Clostridioides difficile infection: a closer look at the microscopic interface

Area of Science:

• Microbiology
• Gastroenterology
• Infectious Diseases

Background:

• Clostridioides difficile infection (CDI) pathogenesis is strongly associated with antimicrobial use, which disrupts gut microbiota.
• Factors like age, proton-pump inhibitors, and gastrointestinal diseases also contribute to gut dysbiosis and CDI risk.
• CDI itself can alter the gut microbiome, and its spore-forming nature complicates management and recurrence.

Purpose of the Study:

• To review the intricate relationship between the gut microbiome and Clostridioides difficile infection.
• To explore how microbial perturbations influence the development of initial and recurrent CDI.
• To summarize current understanding of microbial factors associated with CDI protection and prediction.

Main Methods:

• Literature review synthesizing studies on gut microbiome alterations in CDI.
• Analysis of research linking antimicrobial use, host factors, and CDI development.
• Examination of findings on CDI's impact on the gut microbiome and treatment strategies.

Main Results:

• Antimicrobial agents significantly alter gut microbiota, predisposing individuals to CDI.
• CDI can induce further changes in the gut microbiome, impacting infection course and recurrence.
• Gut microbial restoration therapies, such as fecal microbial transplantation, demonstrate therapeutic benefits.

Conclusions:

• The gut microbiome plays a critical role in the pathogenesis and recurrence of Clostridioides difficile infection.
• Understanding microbial dynamics is key to developing effective strategies for CDI prevention and treatment.
• Fecal microbial transplantation represents a promising approach for restoring gut homeostasis and combating CDI.