- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03341052
Characterization of Bile Acid Pathway in Obesity
April 5, 2023 updated by: Andres J. Acosta, M.D., Ph.D., Mayo Clinic
It is unknown whether the bile acid pathway is altered in obesity.
This study is designed to compare obesity and health to determine if the bile acid pathway differs depending on health state.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
This is a single center study involving diet intervention, including healthy obese and healthy normal weight participants.
Participants will maintain their normal diet for 1 week, eat a high fat and high calorie diet for 1 week, return to their normal diet for 1 week, and eat a low fat and low calorie diet for 1 week, to study the effect of diet on the bile acid pathway in normal weight and obesity.
During their first normal diet week, the high calorie week, and the low calorie week, blood samples will be collected at defined times to measure cholesterol, glycemia, Fibroblast Growth Factor 19 (FGF-19), Bile Acid (BA), C4, and incretins (GLP-1 (glucagon-like peptide-1), peptide tyrosine tyrosine (PYY 3-36)) fasting levels and responses to the meal.
Stool samples will be collected for 48 hour BA excretion.
Study Type
Interventional
Enrollment (Actual)
16
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
-
-
Minnesota
-
Rochester, Minnesota, United States, 55905
- Mayo Clinic in Rochester
-
-
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
Description
Normal Weight Inclusion Criteria:
- Women of childbearing potential will have negative pregnancy tests within 48 hours of enrollment
- BMI: 18.5-25 kg/m2
Obese Inclusion Criteria:
- Women of childbearing potential will have negative pregnancy tests within 48 hours of enrollment
- BMI: ≥ 30 kg/m2
Exclusion Criteria for both Normal Weight and Obese Participants:
- History of abdominal surgery including cholecystectomy and other than appendectomy, Caesarian section or tubal ligation.
- Positive history of chronic gastrointestinal diseases, or systemic disease that could affect gastrointestinal motility, or use of medications that may alter gastrointestinal motility, appetite or absorption, e.g., orlistat, phentermine.
- Significant untreated psychiatric dysfunction based upon screening with the Hospital Anxiety and Depression Inventory (HAD), a self-administered alcoholism screening test (AUDIT-C) and the Questionnaire on Eating and Weight Patterns (binge eating disorders and bulimia). If such a dysfunction is identified by a HAD score >11 or difficulties with substance or eating disorders, the participant will be excluded and given a referral letter to his/her primary care doctor for further appraisal and follow-up. The AUDIT-C is a 3-item alcohol screening questionnaire that reliably identifies participants who are hazardous alcohol drinkers or have active alcohol use disorders. In men, a score of 4 or more is above the recommended limits will be reviewed by study personnel. In women, a score of 3 or more is above the recommended limits will be reviewed by study personnel. However when the points are above recommended limits, the provider will review the patient's alcohol intake over the past few months to confirm accuracy and determine study eligibility..
- Intake of medication, whether prescribed or over the counter (except multivitamins), within 7 days of the study. Exceptions are birth control pill, estrogen replacement therapy, and thyroxin replacement therapy.
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: Basic Science
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Obese Participants
Participants will be on each diet for one week prior to collection of laboratory samples.
Participants will be on their normal diet on weeks 1 and 3, on the high fat diet on week 2, and low fat diet on week 4.
|
The normal diet will consist of the participants' normal eating habits, and will be tracked by a food log.
The participants will be on their normal diet during week 1 and week 3.
The high fat diet will consist of 2700 kcal, 100g total fat (33%), 300mg cholesterol, 350g carbohydrates (52%), and 100g protein (15%).
The participants will be on this diet during week 2.
The low fat diet will consist of 1200 kcal, 26g fat (20%), 78mg cholesterol, 150g carbohydrates (50%), and 100g protein (30%).
The participants will be on this diet during week 4.
|
Active Comparator: Normal Weight Participants
Participants will be on each diet for one week prior to collection of laboratory samples.
Participants will be on their normal diet on weeks 1 and 3, on the high fat diet on week 2, and low fat diet on week 4.
|
The normal diet will consist of the participants' normal eating habits, and will be tracked by a food log.
The participants will be on their normal diet during week 1 and week 3.
The high fat diet will consist of 2700 kcal, 100g total fat (33%), 300mg cholesterol, 350g carbohydrates (52%), and 100g protein (15%).
The participants will be on this diet during week 2.
The low fat diet will consist of 1200 kcal, 26g fat (20%), 78mg cholesterol, 150g carbohydrates (50%), and 100g protein (30%).
The participants will be on this diet during week 4.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in 48h-fecal Bile Acid Excretion (μmol/L) Between Baseline and High Fat Diet
Time Frame: Baseline to approximately day 7 of week 2
|
Change in 48h-fecal bile acid excretion (μmol/L) between baseline and high fat diet
|
Baseline to approximately day 7 of week 2
|
Change in 48h-fecal Bile Acid Excretion (μmol/L) Between Baseline and Low Fat Diet
Time Frame: Baseline to approximately day 7 of week 4
|
Change in 48h-fecal bile acid excretion (μmol/L) between baseline and low fat diet
|
Baseline to approximately day 7 of week 4
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Andres J Acosta Cardenas, Mayo Clinic
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Helpful Links
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)
November 14, 2017
Primary Completion (Actual)
October 9, 2021
Study Completion (Actual)
October 9, 2021
Study Registration Dates
First Submitted
August 1, 2017
First Submitted That Met QC Criteria
November 9, 2017
First Posted (Actual)
November 14, 2017
Study Record Updates
Last Update Posted (Actual)
April 27, 2023
Last Update Submitted That Met QC Criteria
April 5, 2023
Last Verified
April 1, 2023
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 16-007060
- K23DK114460 (U.S. NIH Grant/Contract)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
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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