About this trial
This study aims to evaluate whether probiotics can help maintain a healthy gut microbiome in patients receiving prophylactic antibiotics during elective orthopedic surgery. Antibiotics, while effective in preventing infections, can disrupt the balance of gut bacteria, leading to dysbiosis. The study hypothesizes that the use of probiotics during the perioperative period can prevent or reduce this disruption, supporting gut health and overall well-being. The research seeks to answer whether combining probiotics with routine antibiotic prophylaxis can preserve gut microbiome balance and improve patient outcomes.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Adults aged between 18 and 65 years
Scheduled for elective low-risk orthopedic surgery (carpal tunnel release, A1 pulley release, knee arthroscopic surgery).
Disqualifiers
History of infection or antibiotic use within the last 12 weeks.
Use of routine probiotics, vitamins, or herbal supplements in the last 4 weeks.
Known allergy to beta-lactam or cephalosporin antibiotics.
History of autoimmune disease, uncontrolled systemic disease, or chronic inflammatory conditions (e.g., systemic lupus erythematosus, rheumatoid arthritis).
Trial design
Parallel
Treatments tested in this trial
Placebo Capsule
DrugParticipants will receive an inert placebo capsule that matches the probiotic capsule in size, shape, and color. The placebo will be administered orally twice daily, starting 2 weeks before surgery and continuing for 2 weeks postoperatively.
Probiotic with Human Milk Oligosaccharides (HMO)
Dietary supplementParticipants will receive a dual-strain probiotic containing Human Milk Oligosaccharides (HMO) in capsule form. The probiotic will be administered orally twice daily, starting 2 weeks before surgery and continuing for 2 weeks postoperatively.
Treatment groups
Trial outcomes
Primary outcomes
Maintenance of Gut Microbiome Balance
Evaluate whether probiotic administration preserves gut microbiome balance during the perioperative period by assessing changes in microbial richness, diversity, and evenness. Shotgun metagenomic sequencing analysis will be used to measure microbial composition and diversity.
Secondary outcomes
Firmicutes/Bacteroidetes Ratio
Determine changes in the Firmicutes/Bacteroidetes ratio, a key marker of dysbiosis, between intervention groups. Using shotgun metagenomic sequencing.
Short-Chain Fatty Acid (SCFA) Production
Assess changes in SCFA production (e.g., acetate, butyrate) as indicators of gut health and microbiome function. Using SCFA quantification through microbiome metabolite analysis.
Dysbiosis Index
Dysbiosis Index is the ratio of the total number of Proteobacteria strains divided by total overall bacteria strain
Microbiome health index ( MHI) OR Microbiome health index for post-antiobiotic (MHI- A)
Microbiome Health Index (MHI-A) calculated via microbiome analysis. MHI-A is a biomarker and a quantitative measure method of post-antibiotic dysbiosis and subsequent restoration. Higher MHI-A means higher healthy microbiome with low antibiotic resistance gene. Lower MHI- A mean dysbiosis, high antiobiotic resistance gene
Sponsors and contacts
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Acibadem Maslak Hospital
Lead sponsor
Acibadem University
Collaborator
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