- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00871871
Multiple Dose Effects of Hydrochlorothiazide and Isosorbide Mononitrate on Glucose Homeostasis (MK-0000-117)(Completed)
July 22, 2015 updated by: Merck Sharp & Dohme LLC
A Randomized, Double-Blind, Placebo-Controlled, 2-Part Study to Evaluate the Multiple Dose Effects of Hydrochlorothiazide and Isosorbide Mononitrate on Glucose Homeostasis in Obese Patients With Hypertension
This study will measure and compare changes in insulin production and sensitivity using the hyperglycemic clamp technique in obese patients with impaired glucose tolerance and hypertension treated with placebo, isosorbide mononitrate (ISMN) or hydrochlorothiazide (HCTZ).
Study Overview
Status
Completed
Conditions
Study Type
Interventional
Enrollment (Actual)
64
Phase
- Phase 1
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
35 years to 75 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Female participants must be post-menopausal
- Body Mass Index (BMI) of at least 29 kg/m^2
- Weight has been stable over the past 3 months
- Has never been treated for hypertension or is diagnosed with hypertension taking up to 2 anti-hypertensive medications
- Willing to stop hypertension treatment for 14 days prior to randomization and throughout the study
- Does not have a history of diabetes
- In good health with the exception of hypertension
- No history of abnormal heart rhythms
- Part I only: willing to comply with high potassium/low sodium diet for the duration of the study
- Willing to avoid strenuous physical activity during the study
- Nonsmoker and/or has not used nicotine for at least 3 months and agrees to refrain from use of tobacco-containing products throughout the study
- Agrees to refrain from consuming alcohol and caffeine during in-patient periods and to limit consumption at all other times during the study
- Agrees not to consume grapefruit, grapefruit products, and citrus, apple, and pineapple juices 2 weeks prior to administration of the first dose of study drug
Exclusion Criteria:
- History of any illness that may make their participation in the study unsafe or confuse the study results
- Taking spironolactone or eplerenone
- Cannot refrain from using any prescription or non-prescription drugs during the study
- On a weight loss program and is not in the maintenance phase
- Started a weight loss drug within 8 weeks of the first study visit
- Consumes excessive amounts of alcohol or caffeine
- Has had major surgery, donated or lost 1 unit of blood within 4 weeks of the first study visit
- History of multiple and/or severe allergies to drugs or food
- Is dehydrated
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: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Part I, Placebo-HCTZ
Placebo in Period 1 followed by HCTZ in Period 2
|
HCTZ 50 mg (two 25 mg capsules) once daily for 4 weeks per treatment period.
Other Names:
Placebo to HCTZ two 0 mg capsules once daily for 4 weeks per treatment period
|
Experimental: Part I, HCTZ-Placebo
HCTZ in Period 1, followed by placebo in Period 2
|
HCTZ 50 mg (two 25 mg capsules) once daily for 4 weeks per treatment period.
Other Names:
Placebo to HCTZ two 0 mg capsules once daily for 4 weeks per treatment period
|
Experimental: Part II, Placebo-ISMN
Placebo in Period 1, followed by ISMN in Period 2
|
ISMN 60 mg extended release capsule once daily for 4 weeks per treatment period
Placebo to ISMN 0 mg capsule once daily for 4 weeks per treatment period
|
Experimental: Part II, ISMN-Placebo
ISMN in Period 1, followed by placebo in Period 2
|
ISMN 60 mg extended release capsule once daily for 4 weeks per treatment period
Placebo to ISMN 0 mg capsule once daily for 4 weeks per treatment period
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Part I: Change in Insulin Secretion at Steady-state Compared to Placebo in Participants With Impaired Glucose Tolerance (IGT)
Time Frame: 90 -120 minutes post-dose
|
Steady state was defined as 90-120 minutes post-dose.
IGT was defined as a 2 hour plasma glucose >= 140 and <= 199 mg/dL during a 75g oral glucose tolerance test at screening.
|
90 -120 minutes post-dose
|
Part I: Change in Insulin Secretion at Steady-state Compared to Placebo in Participants With Impaired Fasting Glucose (IFG)
Time Frame: 90 -120 minutes post-dose
|
Steady state was defined as 90-120 minutes post-dose.
IFG was defined as fasting plasma glucose (FPG) between 100 and 125 mg/dL at screening.
|
90 -120 minutes post-dose
|
Part I: Change in Insulin Secretion at Steady-state Compared to Placebo in Participants Who Had Normal Glucose Tolerance (NGT)
Time Frame: 90 -120 minutes post-dose
|
Steady state was defined as 90-120 minutes post-dose.
NGT participants (FPG <100 mg/dL & 2 hour plasma glucose (PG) <140 mg/dL during a 75g oral glucose tolerance test (OGTT) at screening) were neither Impaired Glucose Tolerant (IGT) nor Impaired Fasting Glucose (IFG).
IGT was defined as a 2 hour plasma glucose >= 140 and <= 199 mg/dL during a 75g oral glucose tolerance test at screening.
IFG was defined as FPG between 100 and 125 mg/dL at screening.
|
90 -120 minutes post-dose
|
Part II: Ratio of Whole Body Glucose Disposal to Plasma Insulin at Steady-state
Time Frame: 90 -120 minutes post-dose
|
Steady state was defined as 90-120 minutes post-dose.
The ratio was the quantity of glucose disposed by the body per kg body weight per minute at steady state divided by the approximate steady state plasma insulin concentration.
The approximate steady state plasma insulin concentration was estimated by the time-weighted average of the insulin concentration measured at 10 minute intervals in which time = 90, 100, 110, and 120 minutes.
|
90 -120 minutes post-dose
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Part I: Change in the Ratio of Whole Body Glucose Disposal to Plasma Insulin at Steady State in Participants With Impaired Glucose Tolerant (IGT)
Time Frame: 90 -120 minutes post-dose
|
Steady state was defined as 90-120 minutes post-dose.
The ratio was the quantity of glucose disposed by the body per kg body weight per minute at steady state divided by the approximate steady state plasma insulin concentration.
The approximate steady state plasma insulin concentration was estimated by the time-weighted average of the insulin concentration measured at 10 minute intervals in which time = 90, 100, 110, and 120 minutes.
IGT was defined as a 2 hour plasma glucose >= 140 and <= 199 mg/dL during a 75g oral glucose tolerance test at screening.
|
90 -120 minutes post-dose
|
Part I: Change in the Ratio of Whole Body Glucose Disposal to Plasma Insulin at Steady State in Participants With Impaired Fasting Glucose (IFG)
Time Frame: 90 -120 minutes post-dose
|
Steady state was defined as 90-120 minutes post-dose.
The ratio was the quantity of glucose disposed by the body per kg body weight per minute at steady state divided by the approximate steady state plasma insulin concentration.
The approximate steady state plasma insulin concentration was estimated by the time-weighted average of the insulin concentration measured at 10 minute intervals in which time = 90, 100, 110, and 120 minutes.
IFG was defined as fasting plasma glucose (FPG) between 100 and 125 mg/dL at screening.
|
90 -120 minutes post-dose
|
Part I: Change in the Ratio of Whole Body Glucose Disposal to Plasma Insulin at Steady State in Participants With Normal Glucose Tolerant (NGT)
Time Frame: 90 -120 minutes post-dose
|
Steady state was defined as 90-120 minutes post-dose.
The ratio was the measure of the quantity of glucose disposed per unit of plasma insulin concentration (PIC).
Approximate PIC was estimated by the time-weighted average of the insulin concentration measured at 10 minute intervals, time = 90, 100, 110, and 120 minutes.
NGT participants (FPG <100 mg/dL & 2 hour PG <140 mg/dL during a 75g OGTT at screening) were neither IGT nor IFG at screening.
IGT - defined as a 2 hour PG >= 140 and <= 199 mg/dL during a 75g OGTT at screening.
IFG - defined as FPG between 100 and 125 mg/dL at screening.
|
90 -120 minutes post-dose
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
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
March 1, 2009
Primary Completion (Actual)
February 1, 2010
Study Completion (Actual)
March 1, 2010
Study Registration Dates
First Submitted
March 27, 2009
First Submitted That Met QC Criteria
March 27, 2009
First Posted (Estimate)
March 30, 2009
Study Record Updates
Last Update Posted (Estimate)
July 28, 2015
Last Update Submitted That Met QC Criteria
July 22, 2015
Last Verified
July 1, 2015
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Cardiovascular Diseases
- Vascular Diseases
- Hypertension
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Antihypertensive Agents
- Vasodilator Agents
- Natriuretic Agents
- Membrane Transport Modulators
- Diuretics, Osmotic
- Diuretics
- Sodium Chloride Symporter Inhibitors
- Nitric Oxide Donors
- Hydrochlorothiazide
- Isosorbide
- Isosorbide Dinitrate
- Isosorbide-5-mononitrate
Other Study ID Numbers
- 0000-117
- 2009_567
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
product manufactured in and exported from the U.S.
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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