Aldosterone and the Metabolic Syndrome
Metabolic Diseases, Diabetes Mellitus, Endocrine System Diseases
About this trial
This is an interventional prevention trial for Metabolic Diseases focused on measuring Glucose, Insulin
Eligibility Criteria
Inclusion Criteria:
Subjects meeting all of the following conditions will be included in the study:
- Ambulatory subjects, 18 to 70 years of age, inclusive
For female subjects, the following conditions must be met:
- postmenopausal status for at least 1 year, or
- status-post surgical sterilization, or
- if of childbearing potential, utilization of adequate birth control and willingness to undergo urine beta-hcg testing prior to drug treatment and on every study day.
- A seated or supine systolic blood pressure greater than 130/85 on three separate measurements at least 15 minutes apart
Metabolic Syndrome as defined by the presence of > 3 of the following:
- Hypertension as characterized by having Systolic Blood Pressure > 140 mm Hg and Diastolic Blood Pressure > 90 mm Hg.
- Impaired Glucose Tolerance (Fasting Plasma Glucose > 100 mg/dL)
- Increased triglyceride level > 150mg/dL
Decreased levels of High-Density Lipoprotein (HDL) cholesterol
- For males, less than 30 mg/dL
- For females, less than 40 mg/dL
Waist circumference
- For males, greater than 40 inches.
- For females, greater than 35 inches.
Exclusion Criteria:
Subjects presenting with any of the following will not be included in the study:
- Diabetes type 1 or type 2, a fasting glucose of greater than 110 mg/dL or the use of anti-diabetic medication
- Use of hormone replacement therapy
- Statin therapy
- Pregnancy
- Breast-feeding
- Cardiovascular disease such as prior myocardial infarction, presence of angina pectoris, significant arrhythmia, congestive heart failure [Left Ventricular (LV) hypertrophy acceptable], deep vein thrombosis, pulmonary embolism, second or third degree heart block, mitral valve stenosis, aortic stenosis or hypertrophic cardiomyopathy
- Treatment with anticoagulants
- History of serious neurologic disease such as cerebral hemorrhage, stroke, seizure, or transient ischemic attack
- History or presence of immunological or hematological disorders
- Diagnosis of asthma requiring use of inhaled beta agonist >1 time per week
- Clinically significant gastrointestinal impairment that could interfere with drug absorption
- Impaired hepatic function [aspartate amino transaminase (AST) and/or alanine amino transaminase (ALT) >1.5 x upper limit of normal range]
Impaired renal function [estimated glomerular filtration rate (eGFR) of <60ml/min] as determined by the four-variable Modification of Diet in Renal Disease (MDRD) equation, where serum creatinine (Scr) is expressed in mg/dl and age in years:
eGFR (ml/min/1.73m2)=175 • Scr-1.154 • age-0.203 • (1.212 if black) • (0.742 if female)
- Hematocrit <35%
- Any underlying or acute disease requiring regular medication which could possibly pose a threat to the subject or make implementation of the protocol or interpretation of the study results difficult, such as arthritis treated with non-steroidal antiinflammatory drugs
- Treatment with chronic systemic glucocorticoid therapy (more than 7 consecutive days in 1 month)
- Treatment with lithium salts
- History of alcohol or drug abuse
- Treatment with any investigational drug in the 1 month preceding the study
- Mental conditions rendering the subject unable to understand the nature, scope and possible consequences of the study
- Inability to comply with the protocol, e.g., uncooperative attitude, inability to return for follow-up visits, and unlikelihood of completing the study
- Screening plasma potassium <3.2 mmol/L or use of chronic potassium supplements for the treatment of hypokalemia
Sites / Locations
- Vanderbilt University Medical Center
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Active Comparator
Active Comparator
Active Comparator
Active Comparator
HCTZ plus ALI 150 then ALI 300
HCTZ plus ALI 150 then ALI 150 and SPL 25
HCTZ plus SPL 25 then SPL 50
HCTZ plus SPL 25 then ALI 150 and SPL 25
Hydrochlorothiazide (HCTZ) 12.5mg daily for 1 month then HCTZ 12.5mg daily plus Aliskiren 150 mg (ALI 150) daily for 1 month then HCTZ 12.5mg daily plus Aliskiren 300mg ((ALI 300) for 1 month
HCTZ 12.5mg daily for 1 month then HCTZ 12.5mg daily plus Aliskiren 150 mg daily for 1 month then HCTZ 12.5mg daily plus Aliskiren 150 mg daily and Spironolactone 25mg (SPL 25) daily for one month
HCTZ 12.5mg daily for 1 month then HCTZ 12.5mg daily plus Spironolactone 25 mg (SPL 25) daily for 1 month then HCTZ 12.5mg daily plus Spironolactone 50 mg daily for one month
HCTZ 12.5mg daily for 1 month then HCTZ 12.5mg daily plus Spironolactone 25 mg daily for 1 month then HCTZ 12.5mg daily plus Aliskiren 150 mg daily and Spironolactone 25 mg daily for one month