- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02983890
Dicloxacillin: Clinical Relevance of Drug-drug Interactions by Induction of Drug Metabolism.
Dicloxacillin: Clinical Relevance of Drug-drug Interactions by Induction of Drug Metabolizing Enzymes.
Study Overview
Detailed Description
Given knowledge explains dicloxacillin and the drug warfarin to be a potential dangerous drug drug interaction because the effects of warfarin is downregulated to a degree as to where it might cause patients to have thrombotic events.
A potential explanation to this is namely dicloxacillin increases the activity of certain drug metabolising enzymes metabolising warfaring which in turn decreases the concentration of the drug in the blood and the therapeutic effect.
Cocktail study is the golden standard to investigate as to whether there is changes is P450 enzymes as a result of drug-drug interactions.
The cocktail consists of Midazolam, omeprazole, tolbutamide, caffein and dextromethorphan which is well known markers for these enzymes. These markers are safe, have specific (enzyme) metabolism and has been used in several studies with no Serious Adverse reactions reported.
By measuring the Concentration of the drug and its metabolites in plasma / Urine before and after treatment with dicloxacillin we will estimate AUC (area under the curve) and test our hypothesis/primary end point of whether there is change in AUC for Tolbutamide (CYP2C9)
Study Type
Enrollment (Actual)
Phase
- Phase 1
Contacts and Locations
Study Locations
-
-
Funen
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Odense, Funen, Denmark, 5000
- Klinisk Biokemisk Farmakologi syddansk universitet
-
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Are you in a general healthy condition?; questions asked; Are you healthy in general? 2; Do you have any chronic diseases? 3; Are you taking any medications regularly? 4, Are you taking any medications periodically . 5; Are you taking nutrition supplements, "nature-medicine" or over-the-counter drugs
- BMI; range; 18,5-29,9 kg/m2
- eGFR(estimated glomerular filtration rate), ALAT(alanine aminotransferase), bilirubin, hæmoglobin og HbA1c, should be within normal limits or without clinically significantly deviation from these.
- Non-Smoker
Exclusion Criteria:
- Hypersensitivity to applied medications. Known allergy to penicillin or type 1-reaction to cefalosporins.
- Known allergy to sulfonamides
- Clinically relevant intake of receipt-required medication, over-the-counter medication or nutritional supplements.
- Chronic or daily intake of alcohol.
- Participation in other Intervention-studies
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Arm of study1
Dicloxacillin tablets.
|
Tablets containing dicloxacillin are taken 500mg 2x 3 times per day, for 10 days. Followed by test-day nr 1 at day 11. Both arms receives both treatments, randomly assigned
Other Names:
|
Placebo Comparator: Arm of study 2
No treatment
|
No drug are taken for 10 days. Non-blinded. Followed by test-day nr 1 at day 11. Both arms receives both treatments, randomly assigned |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
AUC(area under the curve) for tolbutamid (CYP2C9), as a result of dicloxacillin-treatment
Time Frame: Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
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AUC measurements giving an estimate of activity og the relevant enzymes.
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Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
*AUC(area under the curve) for midazolam (CYP3A4) and dextromethorphan (CYP1A2) omeprazole (CYP2C19) and caffein (CYP1A2)
Time Frame: Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
|
Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
|
|
T(max)
Time Frame: Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
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The amount of time that the drug is present at the maximum concentration in serum.
|
Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
|
C(max) (peak plasma concentration)
Time Frame: Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
|
The peak serum concentration of a therapeutic drug.
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Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
|
Clearance
Time Frame: Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
|
The volume of plasma from which the drug is completely removed per unit time.
Reflects rate of drug elimination divided by plasma concentration.
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Pharmacological outcome measures at t=0 predose and postdose; 0.5,1,2,3,4,6,8,10,12,24.
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Per Damkier, Ph.d., Assosiated to department of biochemistry and pharmacology at University of southern denmark, Odense
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- AKF-388
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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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