- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05528575
Polyphenols, Prebiotics, the Gut Microbiome and Stress
March 6, 2023 updated by: Glenn Gibson, University of Reading
Randomised Three-arm Trial Investigating the Effects of Different Polyphenol and Prebiotic Combinations on Human Gut Microbiota and Perceived Cognitive State
The aim of this study is to evaluate how different combinations of prebiotics and polyphenols affect the gut microbiota and perceived cognitive state.
40 volunteers will take part in this study who will be randomised into 4 different groups.
One group will consume a placebo, whereas the other groups will consume prebiotics, polyphenols, or a combination of the two.
Study Overview
Status
Completed
Conditions
Detailed Description
- All participants will be asked to fill out a health screening questionnaire and inclusion/exclusion criteria will be reviewed for volunteer eligibility
- Valid informed consent will be obtained from the volunteer.
- Once the study begins, participants will be randomly allocated into 1 of 4 groups each assigned a different polyphenol or prebiotic product. the prebiotic content is dosed as follows: Inulin at 5g/d, GOS at 5g/d and Resistant Starch at 20g/d.
- Participants will be asked to consume their assigned product once per day. The length of the intervention is 14 days
- Participants will provide two stool samples: one on day 0 and one on day 14 of the study to identify changes in gut microbiota composition
- Urine samples will also be provided at day 0 and at day 14 looking for changes in urinary metabolites
- Participants will also be asked to fill out various mood related questionnaires on days 0 and 14 of the study.
- You will take your own blood pressure and heart rate on day 0 and day 14 and at least 3 times per week to try and link changes in gut microbiota composition with vascular health.
- Volunteers will be given containers and specimen pots to take home for initial and final faecal and urine collections. No treatment will be issued until initial stool and urine sample has been provided
- Maintenance of normal dietary patterns throughout the study is essential and participants will be required to complete food and drink logs throughout the study via a web-based app - on three consecutive days with one of the days being a weekend
Study Type
Interventional
Enrollment (Actual)
20
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Berkshire
-
Reading, Berkshire, United Kingdom, rg66dz
- University of Reading
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 65 years (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Volunteer is healthy at the time of pre-examination
- Volunteer has high perceived stress levels (own self-assessment)
- Volunteer is aged ≥ 18 to ≤ 65 years at the time of pre-examination
- Volunteer is able and willing to comply with the study instructions
- Volunteer is suitable for participation in the study according to the investigator/study personnel
- Written informed consent is given by volunteer
Exclusion Criteria:
- No command of any local language
- Gastrointestinal disorders including IBS, IBD or other conditions that might affect the gut environment
- Food allergies or intolerances
- Using drugs (e.g. antibiotics) influencing gastrointestinal function (8 weeks before intervention)
- Use of laxatives
- Participants with any form of diagnosed diabetes (types I and II)
- Volunteers currently involved or will be involved in another clinical or food study
- History of drug (pharmaceutical or recreational) or alcohol abuse.
- participants are pregnant or are lactating
- Regular intake of probiotic or prebiotic supplements
- Smoking
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Polyphenol
Consume polyphenol combination for two weeks
|
tablet supplements, available readily.
|
Experimental: Prebiotic
Consume prebiotic combination for two weeks
|
Prebiotic combination, Inulin, GOS and RS2
|
Experimental: prebiotic and polyphenol
Combination of prebiotics and polyphenols for two weeks
|
combination of the same prebiotics and polyphenols as above
|
Placebo Comparator: Placebo
maltodextrin placebo for two weeks
|
maltodextrin, 10g per day
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Bacteriology
Time Frame: baseline, pre-intervention, then After 14 days of intervention
|
Changes in bacteriology
|
baseline, pre-intervention, then After 14 days of intervention
|
Mood Questionnaires
Time Frame: baseline, pre-intervention, then After 14 days of intervention
|
various mood questionnaires
|
baseline, pre-intervention, then After 14 days of intervention
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Blood pressure
Time Frame: baseline, pre-intervention, then After 14 days of intervention. at least three times per week also
|
Blood pressure taken systolic, diastolic and pulse
|
baseline, pre-intervention, then After 14 days of intervention. at least three times per week also
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
January 1, 2022
Primary Completion (Actual)
September 23, 2022
Study Completion (Actual)
September 23, 2022
Study Registration Dates
First Submitted
August 24, 2022
First Submitted That Met QC Criteria
September 2, 2022
First Posted (Actual)
September 6, 2022
Study Record Updates
Last Update Posted (Estimate)
March 7, 2023
Last Update Submitted That Met QC Criteria
March 6, 2023
Last Verified
March 1, 2023
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 21/19
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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