Faecal microbiota transplantation for urinary tract infections
Abstract
BACKGROUND
Recurrent urinary tract infections (rUTIs) are a major clinical burden, increasingly complicated by multidrug-resistant organisms (MDROs) and antibiotic overuse. Growing evidence implicates gut microbiota dysbiosis as a key contributor to UTI susceptibility, with the gastrointestinal tract acting as a reservoir for uropathogens.
OBJECTIVES
This review examines the emerging role of faecal microbiota transplantation (FMT) as a therapeutic strategy for rUTIs. We synthesize findings from human studies and case reports, evaluate microbiological and clinical outcomes post-FMT, and discuss mechanistic insights, safety concerns, and future research directions.
SOURCES
We reviewed peer-reviewed publications up to May 2025 using PubMed and Web of Science. Included sources comprised clinical trials, cohort studies, case reports, economic analyses, and expert reviews concerning FMT and UTIs.
CONTENT
FMT has shown promise in reducing rUTI episodes, particularly in patients with underlying gut dysbiosis or MDRO colonization. Clinical studies and case reports consistently report decreased UTI frequency, lower MDRO burden, and increased gut microbiota diversity post-FMT. Patients previously refractory to antibiotic prophylaxis achieved prolonged infection-free periods. Microbiome analyses often reveal reductions in uropathogen abundance and shifts toward donor-like microbial communities. However, outcomes vary and some patients experience persistence or transmission of…
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