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Clinical Trial Summary

It has been shown that person-specific factors, such as the fecal microbiome, influenced postprandial glycemia. The small intestine is the site of nutrient digestion and absorption. The small intestine microbiota is amendable by dietary changes, and plays a key role in host adaptability to dietary variations. The role of the human small intestine microbiota in regulating postprandial glycemic responses towards food products will be investigated. First a screening will take place with to choose the test products that elicit most differential glucose responses and to select subjects with differential postprandial response to the same food product. The study will be a 6-day randomized cross-over trial with two test days. Four test (food) products, each containing 50 gram carbohydrates, and an oral glucose tolerance test will be provided to participants. Twenty men or women (BMI≥25 kg/m2, 40-75 years old) will be included. The main study parameters/endpoints are the food product-induced plasma glucose responses (iAUC) and the small intestine microbiota.


Clinical Trial Description

Rationale: It has been shown that person-specific factors, such as the fecal microbiome, influenced postprandial glycemia. The small intestine is the site of nutrient digestion and absorption. The small intestine microbiota is amendable by dietary changes, and plays a key role in host adaptability to dietary variations. Differences in small intestine microbiota are hypothesized to be key in explaining the interpersonal differences in glycemic responses. Objective: To investigate the role of the human small intestine microbiota in regulating postprandial glycemic responses towards food products. Study design: The subjects will wear a continuous glucose monitor during the screening and the study. First a screening (14 days in total) will take place with to choose the test products (2 out of 4) that elicit most differential glucose responses and to select subjects with differential postprandial response to the same food product. Also an OGTT will be performed. The study will be a randomized cross-over trial with two test days (length of trial is 6 days in total). During the trial, the subjects will be intubated with a naso-jejunum catheter. Study population: Twenty men or women (BMI≥25 kg/m2, 40-75 years old). Intervention (if applicable): Four test (food) products, each containing 50 gram carbohydrates, and an oral glucose tolerance test. Main study parameters/endpoints: test (food) product-induced plasma glucose responses (iAUC), small intestine microbiota. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05120661
Study type Interventional
Source Wageningen University
Contact
Status Completed
Phase N/A
Start date December 9, 2021
Completion date July 1, 2022

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