Sepsis Clinical Trial
Official title:
Prebiotic Inulin to Limit Antimicrobial-Resistant Infections During Critical Illness: A Phase II Clinical Trial
Normal gut bacteria prevent colonization and subsequent infection with MDR organisms (MDROs) through competition for resources and other mechanisms. During critical illness, this function of the microbiome is lost and there are no current treatments to restore it. Preliminary data indicates that the prebiotic fiber inulin is safe and may alter the gastrointestinal microbiome to improve gut barrier function, decrease colonization with MDROs, and reduce downstream risk for intensive care unit (ICU)-acquired MDR infections. However, the impact of inulin during critical illness is unknown. This double-blind, randomized clinical trial will test inulin for the prevention of antibiotic resistant infections in the ICU. The trial's specific aims are to determine (1) the feasibility, tolerability, and safety of inulin in the intensive care unit; (2) the impact of inulin on gut colonization with antibiotic-resistant pathogens; and (2A/exploratory) the impact of inulin on ICU-acquired antibiotic-resistant infections.
The proposed trial hypothesizes that inulin maintains short-chain fatty acid (SCFA)-producing colonic anaerobes and that these bacteria are protective against multi-drug resistant organism (MDRO) colonization and subsequent MDR infection. Inulin, a vegetable-derived non-digestible polysaccharide is well established as the key nutrient source for SCFA-producing bacteria. Previous human studies have shown that (1) inulin increases levels of SCFA producers and SCFAs and (2) that this increase correlates with improved colonic mucosal integrity and resistance to MDR pathogens. In animal studies, inulin improves survival after pathogen challenge or injection with lipopolysaccharide. The overall aim of this clinical trial is to determine whether inulin improves gut colonization resistance against antibiotic-resistant pathogens and therefore prevents antibiotic-resistant infections in the setting of critical illness. To accomplish this, 90 critically ill adults who are receiving broad-spectrum antibiotics will be blindly randomized 1:1:1 to receive placebo, inulin 8 g twice daily, or inulin 16 g twice daily for a minimum of 7 days, with bedside follow-up extending to 30 days or hospital discharge. ;
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