Clinical Study of Fecal Microbiota Transplantation in the Treatment of Small Intestinal Bacterial Overgrowth (SIBO)

Study Overview
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Brief Summary
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Small intestinal bacterial overgrowth (SIBO) is defined as the presence of excessive numbers of bacteria in the small bowel causing gastrointestinal (GI) symptoms. These bacteria are usually coliforms, which are typically found in the colon and include predominantly Gram-negative aerobic and anaerobic species that ferment carbohydrates producing gas .Fecal Microbiota Transplantation (FMT) is a therapeutic method to transplant the microbiota from the feces of healthy people into the intestinal tract of patients. To explore the overall efficacy and safety of FMT in the treatment of SIBO.

Official Title
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To Investigate the Efficacy and Safety of Fecal Microbiota Transplantation (FMT) in the Treatment of Small Intestinal Bacterial Overgrowth (SIBO).

Conditions
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Small Intestinal Bacterial Overgrowth, Fecal Microbiota Transplantation

Intervention / Treatment
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* Procedure: Fecal microbiota transplantation


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients with a positive breath test result upon initial admission. Patients presenting with abdominal symptoms. Patients who have stool and small intestinal fluid samples available before and after FMT. Exclusion Criteria: Patients with gastrointestinal malignancies. Patients with a history of gastrointestinal surgery. Patients on long-term probiotic use. Patients with a history of extensive antibiotic use.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: FMT Responder<br> | Procedure: Fecal microbiota transplantation<br>* Fecal microbiota transplantation (FMT) achieves the purpose of treating intestinal and extra-intestinal diseases by transplanting the functional microbes in the feces of healthy people into the patient's intestine through the upper or lower alimentary tract routes to rebuild the patient's intestinal microbiota.<br>|
| Experimental: FMT non-Responder<br> | Procedure: Fecal microbiota transplantation<br>* Fecal microbiota transplantation (FMT) achieves the purpose of treating intestinal and extra-intestinal diseases by transplanting the functional microbes in the feces of healthy people into the patient's intestine through the upper or lower alimentary tract routes to rebuild the patient's intestinal microbiota.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of adverse events (Assessing the safety of FMT in patients with SIBO) | Document adverse events related to FMT that occurred during the study, including their frequency and severity. | 7 days, 1 month | 
| Number of Patients with gastrointestinal symptom scores | The efficacy of FMT in SIBO patients was evaluated according to the scores of gastrointestinal symptoms before and after treatment. Patients with gastrointestinal symptom scores, including some of the abdominal symptoms and defecation situation, we can according to this questionnaire to assess patients with abdominal symptoms and defecate on the improvement of their situation. | 7 days, 1 month | 
| Investigating the impact of FMT on the colonic and small intestinal microbiota. | For patients before and after the FMT feces and small intestinal juice samples 16 s rRNA sequencing, compare the difference between before and after the FMT feces and bacteria in the intestinal flora of diversity, species composition belong. The changes of commensal bacteria, opportunistic pathogens and pathogenic bacteria in feces and small intestinal fluid after FMT were compared. | 7 days, 1 month |