Clinical trials: Sympathetic Disorder
Hypoglycemia
Hypoglycemia and Autonomic Nervous System Function
The goals of this proposal are to determine the effects of hypoglycemia on the autonomic nervous system.
- Trial name
- HypoANS (NCT01816893)
- Testing
- Hypoglycemic hyperinsulinemic clamp, Euglycemic hyperinsulinemic clamp
- Where
- 2 sites in United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Bone Blood Flow Regulation
Exploration of Blood Flow Regulation to Bone in Humans
Without blood flow, bone cannot maintain its integrity. Bone blood flow responds to various local and systemic factors, however, bone perfusion in humans remains relatively unstudied.
- Trial name
- NCT04083794
- Testing
- Laboratory based assessments
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Spaulding Rehabilitation Hospital
Mild Dehydration
The Effect of Acute Mild Dehydration on Blood Pressure Control
The goal of this project is determine how acute mild dehydration impacts blood pressure control at rest and during static exercise.
- Trial name
- NCT03560869
- Testing
- Normal hydration, Dehydration
- Where
- United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- University of Delaware
Obesity, Prehypertension
Vascular Dysfunction in Human Obesity Hypertension
The purpose of the study is to test the effects of blocking sympathetic nerve activity with a drug called clonidine on blood vessel function and muscle nerve activity in adults who are obese and have high blood pressure.
- Conditions
- Obesity, Prehypertension, Hypertension
- Trial name
- VANISH (NCT01983462)
- Testing
- Clonidine, Hydrochlorothiazide
- Where
- United States
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Gary L. Pierce
Cardiomyopathy
Characterization of Sympathetic Nerve Activity in Stress Cardiomyopathy
Stress (Takotsubo) cardiomyopathy (SC) is a peculiar form of acute, reversible myocardial dysfunction predominantly affecting the apical and mid left ventricular segments.
- Trial name
- NCT01048125
- Testing
- Sympathetic Nerve Activity, Mental Stress Test (Color Word Test), The Modified Oxford Technique for Baroreflex Sensitivity
- Where
- United States
- Volunteers
- 2 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Hypertension
Melatonin and Nighttime Blood Pressure in African Americans--24 mg Study
The purpose of this study is to test the effect of oral melatonin supplementation (24 mg per night for 4 weeks) on nighttime blood pressure in African Americans with a history of elevated nighttime blood pressure.
- Trial name
- NCT01114373
- Testing
- Melatonin
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Emory University
Obesity, Healthy
Sympathetic Activation in Obesity
The primary objective of this study is to determine whether sympathetic nervous system (SNS) activity in white adipose tissue (WAT) and brown adipose tissue (BAT), skeletal muscle and brain is altered in individuals with obesity…
- Trial name
- NCT04946552
- Testing
- PET Scan, Mixed Meal Test, Muscle sympathetic nerve activity (MSNA)
- Where
- United States
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Yale University
Heart Failure, Congestive
Meta-Iodobenzylguanidine (123I-mIBG) Scintigraphy Imaging in Patients With Heart Failure and Control Subjects Without Cardiovascular Disease
The study is designed to study the utility of 123I-mIBG as a diagnostic imaging agent to predict cardiac outcome in subjects with heart failure and in comparison to subjects without cardiovascular disease.
- Trial name
- NCT00126438
- Testing
- 123I-mIBG (meta-iodobenzylguanidine)
- Where
- United States
- Volunteers
- 515 people, healthy volunteers welcome
- Sponsor
- GE Healthcare
Prediabetes, Obese
Inflammation Inhibition in Prediabetic Humans
Prediabetes, characterized by elevated fasting blood sugar or exaggerated blood sugar response to sugar ingestion, effects over 79 million adult Americans and is a precursor to the development of Type 2 diabetes.
- Trial name
- INCITE (NCT01977417)
- Testing
- Salsalate
- Where
- United States
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Gary L. Pierce
Spinal Cord Injury, Autonomic Dysreflexia
Treatment of Post-SCI Hypotension
While treatment strategies for OH have been identified for use in persons with acute SCI, the field of SCI medicine lacks a gold standard for treatment thresholds and well-defined outcome parameters.
- Conditions
- Spinal Cord Injury, Autonomic Dysreflexia, Orthostatic Hypotension, Baroreceptor Integrity
- Trial name
- NCT02919917
- Testing
- Midodrine Hydrochloride
- Where
- 2 sites in United States
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- James J. Peters Veterans Affairs Medical Center
Heart Failure, Congestive
Meta-Iodobenzylguanidine Scintigraphy Imaging in Patients With Heart Failure and Control Subjects Without Cardiovascular Disease
The study is designed to study the utility of 123I-mIBG as a diagnostic imaging agent to predict cardiac outcomes in subjects with heart failure and in comparison to subjects without cardiovascular disease.
- Trial name
- NCT00126425
- Testing
- 123I-mIBG (meta-iodobenzylguanidine)
- Where
- United States
- Volunteers
- 587 people, healthy volunteers welcome
- Sponsor
- GE Healthcare
Restless Legs Syndrome, Neuropathic Pain
Spinal Cord Stimulation for Restless Legs Syndrome
The overall goal of this proposed study is to evaluate the underlying mechanisms of neural control of blood flow in the lower extremities in humans with restless leg syndrome (RLS).
- Trial name
- NCT03539081
- Testing
- Dual-energy X-ray absorptiometry Scan, Laboratory Measurements, Blood Flow Measurement
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Marshall Holland
Hypertension
Melatonin and Nighttime Blood Pressure in African Americans-8 mg Study
This purpose of this study is to test the effect of oral melatonin supplementation (8 mg per night for 4 weeks) on nighttime blood pressure in African Americans with a history of elevated nighttime blood pressure.
- Trial name
- NCT01114360
- Testing
- Melatonin
- Where
- United States
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Emory University
Elevated Blood Pressure
Mindfulness and Neural Cardiovascular Control in Humans
This study evaluates the impact of mindfulness-based stress reduction (MBSR) on sympathetic nerve activity and arterial stiffness.
- Trial name
- NCT03626363
- Testing
- Stress Management
- Where
- United States
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Michigan Technological University
Heart Failure
Targeting Sympathetic Overactivity in Heart Failure Patients With Statins
Heart failure (HF) is a leading cause of morbidity and mortality in the United States with the incidence and prevalence of the disease on a continual rise.
- Trial name
- NCT01097785
- Testing
- Simvastatin
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Major Depressive Disorder
Stress and the Sympathetic Nervous System in Adults With Depression
To test our hypotheses, we will enroll healthy adults having no history of mood disorders and adults with major depressive disorder (MDD) having a broad range of depressive symptom severity.
- Trial name
- NCT04838262
- Testing
- Acute Stressors
- Where
- United States
- Volunteers
- 94 people, healthy volunteers welcome
- Sponsor
- University of Delaware
Binge Drinking
Alcohol and Neural Cardiovascular Control in Binge Drinkers
This study evaluates the impact of evening alcohol consumption on sympathetic activity and baroreflex function in binge drinkers.
- Trial name
- NCT03567434
- Where
- United States
- Volunteers
- 69 people, healthy volunteers welcome
- Sponsor
- Baylor University