colonization resistance
Research Article | Clinical Science and EpidemiologyGut Microbiota Predict Enterococcus Expansion but Not Vancomycin-Resistant Enterococcus AcquisitionThe Centers for Disease Control and Prevention estimates that VRE causes an estimated 54,000 infections and 539 million dollars in attributable health care costs annually. Despite improvements in hand washing, environmental cleaning, and antibiotic use, VRE is still prevalent in many hospitals. There is a pressing need to better understand the processes by which patients acquire VRE. Multiple lines of evidence suggest that intestinal...
Editor's Pick Research Article | Therapeutics and PreventionIdentification of Simplified Microbial Communities That Inhibit Clostridioides difficile Infection through Dilution/ExtinctionClostridioides difficile is the leading cause of antibiotic-associated diarrhea and a significant health care burden. Fecal microbiota transplantation is highly effective at treating recurrent C. difficile disease; however, uncertainties about the undefined composition of fecal material and...
Observation | Host-Microbe BiologyThe Proton Pump Inhibitor Omeprazole Does Not Promote Clostridioides difficile Colonization in a Murine ModelAntibiotics are the primary risk factor for Clostridioides difficile infections (CDIs), but other factors may also increase a person’s risk. In epidemiological studies, proton pump inhibitor (PPI) use has been associated with CDI incidence and recurrence. PPIs have also been associated with alterations in the human intestinal microbiota in observational and...
Research Article | Host-Microbe BiologyThe Gut Microbiota Is Associated with Clearance of Clostridium difficile Infection Independent of Adaptive ImmunityClostridium difficile infection is a major cause of morbidity and mortality in hospitalized patients in the United States. Currently, the role of the adaptive immune response in modulating levels of C. difficile colonization is unresolved. This work suggests that the indigenous gut microbiota is a...
Research Article | Host-Microbe BiologyClostridium difficile Alters the Structure and Metabolism of Distinct Cecal Microbiomes during Initial Infection To Promote Sustained ColonizationClostridium difficile has become the most common single cause of hospital-acquired infection over the last decade in the United States. Colonization resistance to the nosocomial pathogen is primarily provided by the gut microbiota, which is also involved in clearing the infection as the community recovers from perturbation. As distinct antibiotics are associated with...
Research Article | Host-Microbe BiologyAntibiotic-Induced Alterations of the Gut Microbiota Alter Secondary Bile Acid Production and Allow for Clostridium difficile Spore Germination and Outgrowth in the Large IntestineAntibiotics alter the gastrointestinal microbiota, allowing for Clostridium difficile infection, which is a significant public health problem. Changes in the structure of the gut microbiota alter the metabolome, specifically the production of secondary bile acids. Specific bile acids are able to initiate C...