Impact of Probiotics on Gut Microbiome During Antibiotic Prophylaxis in Elective Orthopedic Surgery

Trial statusNot yet recruiting
Trial phasePhase 4
Trial typeInterventional
Biological sexAll
Age18-65
SponsorAcibadem Maslak Hospital

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 volunteers

Qualifiers

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

Design model

Parallel

Treatments tested in this trial

  • Placebo Capsule

    Drug

    Participants 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 supplement

    Participants 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

60 Participants
are divided into 2 treatment groups
Group A: Routine Antibiotic Prophylaxis + PlaceboPlacebo comparator 1 intervention
Group B: Routine Antibiotic Prophylaxis + ProbioticsExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

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.

Time frame
2 weeks preoperatively (T0) to 1 month postoperatively (T4).

Secondary outcomes

1

Firmicutes/Bacteroidetes Ratio

Determine changes in the Firmicutes/Bacteroidetes ratio, a key marker of dysbiosis, between intervention groups. Using shotgun metagenomic sequencing.

Time frame
2 weeks preoperatively (T0) to 1 month postoperatively (T4).
2

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.

Time frame
2 weeks preoperatively (T0) to 1 month postoperatively (T4).
3

Dysbiosis Index

Dysbiosis Index is the ratio of the total number of Proteobacteria strains divided by total overall bacteria strain

Time frame
2 weeks preoperatively (T0) to 1 month postoperatively (T4).
4

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

Time frame
2 weeks preoperatively (T0) to 1 month postoperatively (T4).

Other outcomes

Sponsors and contacts

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Acibadem Maslak Hospital

Lead sponsor

Acibadem University

Collaborator

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