Status:
UNKNOWN
Impact of Probiotics on Drug, Vitamin, and Hormone Metabolism
Lead Sponsor:
University of Washington
Conditions:
Metabolism
Eligibility:
MALE
18-40 years
Phase:
NA
Brief Summary
This is an open-label, fixed sequence study of the effect of probiotics supplementation on drug, vitamin, and hormone metabolism.
Detailed Description
The investigators hypothesize that probiotic treatment (Visbiome) will alter the activities of major classes of drug metabolizing enzymes. Twelve healthy male subjects will participate in a pharmacoki...
Eligibility Criteria
Inclusion
- Be 18 to 40 years old.
- Biological male participants only with no preference to ethnicity. Women are excluded as one of the aims is to determine the impact of probiotics supplementation on testosterone metabolism. As testosterone and metabolite levels are higher in men than in women, men will be recruited to have an increased ability to detect a difference.
- Have a body mass index between 25 and 3218.5 and 27 kg/m2.
- Be currently in good health without a self-reported history of liver, kidney, gastrointestinal or heart disease, and within the normal range or up to 15% of the upper end of the reference range on the Comprehensive and Hepatic Panel.
- Participants must agree to take 2 capsules of Visbiome, a probiotics supplement provided by the study coordinators, twice a day (morning and evening) from Study Day 2 to 29.
- Participants must agree not to take any prescription drugs for the entire duration of the study. This list includes, but is not restricted to, azole antifungal agents, macrolide antibiotics, anti-seizure medications, antihypertensive agents, cholesterol lowering agents, retinoids, corticosteroids, or immunosuppressant medications for the duration of the study.
- Participants must be willing to avoid ingesting grapefruit, grapefruit juice or other grapefruit juice containing products during the study.
- If an over-the-counter medication is needed, the participant should contact the study coordinator for verification and upon approval, the OTCs can be taken but should not be used 24 hours before each study visit and during the study visits.
- Willing to fast overnight before the pharmacokinetic study days.
- Willing to abstain from alcohol-containing beverages 24 hours before and during the study visits.
Exclusion
- Milk allergy or lactose intolerance.
- Currently using prescription medications. Participants may participate in the study following a 2-week washout after discontinuing any prescription medication upon approval of the study team.
- Current cigarette smoker.
- Individuals with systemic disorders affecting the immune system (e.g., HIV, connective tissue disorders, cancers, etc.)
- Self-reported history of liver, kidney, gastrointestinal (e.g., Ulcerative Colitis or Crohn's Disease, intestinal stricture, stenosis, obstruction, fistula, abscess, or ileostomy) or heart disease.
- Abnormal liver or kidney function tests based on the Comprehensive and Hepatic Panel (below the lower end or greater than 15% of the upper end of the reference range).
- Known or suspected history of alcohol or drug abuse.
- Allergic to midazolam, triazolam, diazepam, or lorazepam.
- Recent ingestion (\<1 week) of any medication known to be metabolized by CYP3A4 or alter CYP3A activity.
- Unable to give informed consent.
- Participated in another clinical trial or study within 30 days.
Key Trial Info
Start Date :
January 3 2020
Trial Type :
INTERVENTIONAL
Allocation :
ESTIMATED
End Date :
August 31 2020
Estimated Enrollment :
12 Patients enrolled
Trial Details
Trial ID
NCT04281407
Start Date
January 3 2020
End Date
August 31 2020
Last Update
February 24 2020
Active Locations (1)
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1
University of Washington
Seattle, Washington, United States, 98195