Tulane University Health Science Center, Tidewater building and Tulane Hospital and Clinics
New Orleans, Louisiana, 70112, United States
NCT Number: NCT02299388
The investigators are conducting this research to study the effect of Liraglutide on blood pressure. Several studies have shown increased cardiovascular complications and deaths in diabetics with hypertension. The importance of blood pressure control in diabetes has been shown in many clinical trials. No drug already approved for treating Type 2 Diabetes Mellitus is known to reduce blood pressure along with improving diabetes. However, prior research studies with liraglutide have suggested that treatment with liraglutide improves blood pressure. This effect is seen very quickly and even prior to any weight loss. The mechanism behind this effect is yet to be determined.
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Notify Me18 year–75 year
All sexes
Interventional
Phase 4
New Orleans, Louisiana, 70112, United States
The investigators are conducting this research to study the effect of Liraglutide on blood pressure. Several studies have shown increased cardiovascular complications and deaths in diabetics with hypertension. The importance of blood pressure control in diabetes has been shown in many clinical trials. No drug already approved for treating Type 2 Diabetes Mellitus is known to reduce blood pressure along with improving diabetes. However, prior research studies with liraglutide have suggested that treatment with liraglutide improves blood pressure. This effect is seen very quickly and even prior to any weight loss. The mechanism behind this effect is yet to be determined.
Blood pressure will be monitored using the 24 hour Ambulatory Blood Pressure monitor: a device that monitors your blood pressure while you continue normal activity. We have chosen this method to monitor blood pressure because most of the prior studies have proven it to be superior over a single blood pressure recording and its ability to better predict clinical outcomes.
It is well known that both diabetes and hypertension cause endothelial dysfunction. Endothelium is the inner lining of the blood vessels. When it is functioning, it is supposed to regulate blood clotting, help with the body's immune response, controls the volume of fluid and other substances that pass through the blood vessels. Hence, normal endothelial function protects the blood vessels from atherosclerosis (hardening) and builds up of plaque. When it is not functioning well (as in diabetes, hypertension, cigarette smokers etc.) it does not perform one or more of these functions. Hence, in this study, we will also measure the endothelial function using a machine: ENDO PAT.
This is a non-invasive diagnostic test which is done in the doctor's office. Usually takes about 15 minutes. It is not painful. It generates an EndoScore which indicates the current state of the endothelial health.
This is a PILOT study (a small-scale study designed to determine if a larger, full-scale study is doable) to prove this effect which if proven will be extended to a larger, multicenter trial.
Of note: Liraglutide has already been approved for treating Type 2 Diabetes Mellitus.
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
All subjects will be advised a low sodium diet. Eligible patients will have ABPM measurements and laboratory blood collection at baseline (prior to initiation of Liraglutide or Placebo), at 4 and 8 weeks of therapy. Patients will return 24 hours following ABPM placement for device and data retrieval.
Other names: Victoza
Time frame: Baseline and 8 Weeks
To determine whether Liraglutide lowers systolic BP through the day compared to placebo in patients with T2DM who are not on any anti-hypertensive medications or whose BP medications are unchanged over the study period of 8 weeks.
Time frame: Baseline and 8 Weeks
Time frame: Baseline and 8 Weeks
To understand the BP lowering effect of Liraglutide, the investigators will study the Endothelial function - using Endo PAT
Time frame: Baseline and 8 Weeks
To understand the BP lowering effect of Liraglutide, the investigators will study the the autonomic function by assessing the heart rate variability using Endo PAT.
Time frame: Baseline and 8 Weeks
To understand the mechanisms of BP lowering effect of Liraglutide, the investigators will study the effects on Renin Angiotensin system by measuring Plasma renin and aldosterone levels and Urine Angiotensinogen levels (U-AGT-using an assay developed at Tulane Hypertension Center).
Time frame: Baseline and 8 Weeks
To understand the BP lowering effect of Liraglutide, the investigators will analyse the catecholamines by collecting 24 hrs urine for metanephrines and catecholamines.
Time frame: Baseline and 8 Weeks
To understand the BP lowering effect of Liraglutide, the investigators will assess urinary sodium excretion by collecting 24 hours Urine Sodium.
Tulane University School of Medicine
Other
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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