NCT07300553

Impact Of The Gut Microbiota On Host Cells Energy Metabolism in Health And In Inflammatory Bowel Disease

• Status: Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 45 (estimated)
• Sponsor: Assistance Publique - Hôpitaux de Paris · Academic / Other
• Sex: All
• Age: 18 Years – 50 Years
• Healthy volunteers: Accepted

Summary

Inflammatory Bowel Disease (IBD) often leads to poor disease control and reduced quality of life. Changes in the gut microbiota may disrupt the energy metabolism of immune cells, contributing to IBD. This study will examine how gut microbiota affects immune cell metabolism in healthy adults and IBD patients. Healthy volunteers will be tested before and after a short antibiotic treatment, while IBD patients will be tested once. Energy metabolism will be measured using SCENITH, a method that analyzes metabolic activity in blood immune cells. Participants will also receive a special form of fiber (13C-labeled inulin) to track how gut bacteria break down and use this nutrient. Blood, urine, and stool samples will be analyzed to follow the metabolic fate of inulin. DNA and RNA from stool will be studied to identify which bacteria metabolize the labeled fiber.

Conditions

• IBD
• Crohn Disease
• Ulcerative Colitis (UC)

Interventions

Type	Name	Description
DRUG	Vancomycin /Amphotericin B (Fungizone®) /Gentamicine 80 mg	7 days treatment taken over 8 calendar days). The first intake will take place just before leaving the hospital on the evening of day 0. A precise schedule will be provided for the antibiotics intakes, with the last intake in the afternoon on day 7 (on day 7, only 3 intakes of antibiotics: morning, noon and afternoon): Vancomycin VIATRIS 500 mg for injection or oral administration Dose: 250mg x4 daily orally Amphotericin B (Fungizone®) Bottle 10% (4000mg/40ml) oral solution Dose 500mg x4 (20ml) daily orally Gentamycine 80 mg/2 ml solution (hospital compounding) Dose 80mg x4 daily orally
DIETARY_SUPPLEMENT	Inulin/Inulin C13	\- INULIN ; food grade inulin from Chicory (2% labelled with 13C) at H0 on day 0 (v1) and day 7 (v2) for healthy adults and day 0 (v1) only for patients with IBD.

Timeline

• Start date: 2026-01-02
• Primary completion: 2026-11-01
• Completion: 2027-08-01
• First posted: 2025-12-24
• Last updated: 2026-03-12

Locations

1 site across 1 country: France