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Tundra lists 3 Gut Microbiota Diversity and Composition clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT07558499
Effect of Rectal Administration of Breast Milk on Gut Microbiota in Preterm Infants
This study aims to evaluate the effect of rectal administration of maternal breast milk on gut microbiota development in preterm infants. Preterm infants are at increased risk of dysbiosis due to immaturity and limited enteral feeding in the early postnatal period. In this randomized controlled study, preterm infants will receive either rectal administration of maternal breast milk or normal saline. The primary objective is to compare gut microbiota composition between the two groups. The findings may provide insight into a novel and non-invasive strategy to support microbiota development in preterm infants.
Gender: All
Ages: 22 Weeks - 32 Weeks
Updated: 2026-04-30
NCT07388121
The Effect of Vitamin C Supplementation on Gut Microbiota Composition and Function in Healthy Adults
The aim of this dietary intervention study is to explore how vitamin C affects the bacteria that live in our gut. Vitamins are essential nutrients found in fruits and vegetables. Our bodies cannot make them on their own, but we need them to function correctly. Vitamins play various roles, including supporting the immune system and assisting with energy production. Some vitamins in our diet can reach the large intestine, where they may be used by gut bacteria to promote their growth. In this study, we aim to investigate how our gut bacteria interact with vitamin C and how this interaction affects their growth and activity. For this study, participants will follow their habitual diet for one-week (run-in period), followed by two consecutive two-week supplementation periods in which they will first take a moderate dose (200 mg/day) and then a high-dose (1000 mg/day) of vitamin C. A final one-week period follow up period will involve a return to their habitual diet. Faecal, blood and urine samples will be collected at the start and end of each supplementation period to explore changes in gut microbiota composition, activity and markers of inflammation.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-02-04
NCT07329595
Monitoring the Clinical and Immunological Effects of Microbiome Changes Following Severe Burn Injury
The aim of this study is to longitudinally monitor dynamic changes in the gut microbiome following severe burn injury using fecal samples. Under standard nutritional protocols and intensive care management, serial fecal sampling is performed to assess alterations in microbiome diversity and composition, as well as the indirect effects of these changes on measurable inflammatory biomarkers, endocrine, hematological, immunological, and other organ-specific parameters, the clinical course, and patient outcomes.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-01-09
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