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Study identifier: NCT06822465 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Pathobiomes in Gut of Critically Ill Patients

Condition: Pseudomonas Aeruginosa  ·  Sponsor: University of Chicago

PhaseN/A
Planned participants100
Who can joinAll sexes, 18 Years to 85 Years
Healthy volunteersYes

About this study

Despite powerful antibiotics, 50% of the intestinal tracts of critically ill surgical patients are colonized by Pseudomonas aeruginosa, whose mere presence in this site increases mortality fourfold by mechanisms that remain unknown. Many patients who survive the initial surgical trauma still succumb to multi-organ failure and septicemia secondary to an invasive nosocomial infection. The sequelae of shock, hypoxia, and parental nutrition result in injury to the intestinal mucosa, changes in gut permeability, and failure of intestinal defense mechanisms. These conditions put patients at risk for infection and multiple organ failure secondary to the translocation of enteric bacteria, initiating a systemic release of inflammatory mediators-a process that has been termed gut-derived sepsis. Intestinal P. aeruginosa senses host factors released during stress and responds by activating its virulence gene machinery. As such, the presence of a highly activating intestinal milieu serves to induce virulence in strains of P. aeruginosa and this correlates to the severity of a patient's illness. While the host-pathogen interaction is a dynamic process, the study expects that as a patient's illness worsens or resolves over time, the "virulence-activating" properties of their intestinal milieu will change accordingly. This study will conduct a prospective observational trial in a population of critically ill patients at the Universtiy of Chicago Medical Center. This trial will entail colle…

This description comes directly from the study's public registry record.

Talk to the study team

John Alverdy, MD FACS FSIS  ·  773-702-4876  ·  jalverdy@bsd.uchicago.edu

Leila Yazdanbakhsh, MSCI  ·  773-834-5087  ·  leila.yazdanbakhsh@bsd.uchicago.edu

Always discuss trial participation with your own doctor first.

Locations (1)

The University of ChicagoHyde Park, Illinois, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06822465