Clinical trials: Sympathetic Disorder
Vasodilation, Hypoxia
Sex-related Differences in Sympathetic Vascular Transduction in the Setting of Hypoxemia
The purpose of this project is to identify sex-related differences in the effect of hypoxia on sympathetic vascular transduction.
- Trial name
- NCT05256069
- Testing
- Propranolol Pill
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
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
Hypoxia, Sleep Apnea
Intermittent Hypoxia 2: Cardiovascular and Metabolism
The purpose of this study is to compare cardiovascular physiological adaptation to intermittent hypoxia (IH) of nonobese healthy subjects. The exposure will be two periods of two weeks (IH versus exposure "placebo hypoxia").
- Conditions
- Hypoxia, Sleep Apnea, Obstructive Sleep Apnea
- Trial name
- IH2 (NCT02058823)
- Testing
- Valsartan, Amlodipine
- Where
- France
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University Hospital, Grenoble
Asthma
NHFT Effects on Symptatheic Drive of Asthma Patients
The project will be pursued in our respiratory, autonomic nervous system physiology laboratory (Respiratory, autonomic nervous system physiology laboratory, Department of Pneumology and Intensive Care Medicine, RWTH Aachen…
- Trial name
- MSNA in Asthma (NCT05704101)
- Where
- Germany
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- RWTH Aachen University
Post-traumatic Stress Disorder, Prehypertension
Sympathetic Overactivity in Post-traumatic Stress Disorder
Post-traumatic stress disorder (PTSD) is a highly prevalent anxiety disorder that is associated with an increased risk of cardiovascular (CV) disease and hypertension.
- Trial name
- SO-PTSD (NCT01627301)
- Testing
- Device-Guided Breathing (DGB), Transcutaneous Vagal Nerve Stimulation (tVNS)
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Emory University
Breast Cancer-Related Lymphedema, Autonomic Dysfunction
Evaluation of Sympathetic Skin Response and Its Relationship With Clinical Response to Complex Decongestive Therapy in Patients With Postmastectomy Lymphedema
This prospective observational single-center study aimed to evaluate sympathetic skin response (SSR) in patients with postmastectomy upper extremity lymphedema and to investigate the relationship between SSR parameters and…
- Conditions
- Breast Cancer-Related Lymphedema, Autonomic Dysfunction, Postmastectomy Lymphedema
- Trial name
- BCRL-SSR (NCT07585253)
- Where
- Turkey (Türkiye)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Gaziler Physical Medicine and Rehabilitation Education and Research Hospital
Hypertension
Sympathetic Transduction in Obesity
Central (abdominal) obesity is associated with elevated adrenergic activity and arterial blood pressure (BP). Therefore, we tested the hypothesis that transduction of spontaneous muscle sympathetic nerve activity (MSNA) to BP…
- Trial name
- NCT05590546
- Testing
- No intervention
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- University of Kansas Medical Center
Periodontitis, Cardiac Electrophysiology
Effects of Periodontitis on Heart Rate Variability
Periodontitis is a chronic inflammatory disease associated with systemic inflammatory burden and possible alterations in autonomic nervous system regulation.
- Trial name
- NCT07735312
- Testing
- Non-surgical periodontal therapy
- Where
- Brazil
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo
Central Sympathetic Nervous System Diseases
Role of Sympathetic Activation in Ischemia Reperfusion Injury
This study is designed to assess the effect of forearm ischemia-reperfusion injury on sympathetic nerve activity. To determine whether reduced sympathetic responsiveness is a contributor to the protective effects of remote…
- Trial name
- NCT04479813
- Testing
- Moxonidine 0.2 MG
- Where
- Australia
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Royal Perth Hospital
Complex Regional Pain Syndrome Type I of the Upper Limb, Unilateral Limb Pain of Other Origin
Correlation Between 3 Phase Bone Scintigraphy and Pressure Pain Thresholds in Patients With Complex Regional Pain Syndrome (CRPS)
The aim of the study is to investigate the correlation between increased bone metabolism in the 3 phase bone scintigraphy (TPBS) and decreased pressure pain thresholds in patients with complex regional pain syndrome (CRPS) of the…
- Conditions
- Complex Regional Pain Syndrome Type I of the Upper Limb, Unilateral Limb Pain of Other Origin, Healthy Subjects
- Trial name
- NCT01623141
- Testing
- Pressure Pain measurement
- Where
- Germany
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- Ruhr University of Bochum
Spinal Cord Injury, Insulin Resistance
IR and Microvascular Blood Flow in SCI
Persons with spinal cord injury (SCI) are at an increased risk for metabolic disorders, including that of insulin resistance. As a result of neurological injury, they often have impaired mechanisms that regulate blood vessel…
- Trial name
- NCT02034331
- Testing
- Insulin iontophoresis, Acetylcholine Iontophoresis, Heat application
- Where
- United States
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- James J. Peters Veterans Affairs Medical Center
Hypertension
Neural Mechanism of Aldosterone-induced Insulin Resistance
Patients with high aldosterone hormone have higher blood glucose than normal people. This study is being done to understand how aldosterone hormone affects the nerve activity that controls blood flow in the muscles and blood…
- Trial name
- NCT02102243
- Testing
- DEFINITY® infusion, Human Recombinant Regular Insulin infusion, Dextrose infusion
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Wanpen Vongpatanasin
Healthy, Obesity
Effect of Ghrelin on Sympathetic Nervous System
Ghrelin is a newly discovered peptide that is secreted by the stomach. Its main role is to stimulate food intake but recent studies indicate that it also acts on the cardiovascular system to confer beneficial effects.
- Trial name
- NCT00912587
- Testing
- ghrelin
- Where
- Australia
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Baker Heart and Diabetes Institute
Hypertension,Essential
Impact of Aerobic Exercise Training on Sympathetic Vasoconstriction and Vascular Function in Essential Hypertension
Sympathetic nervous activity plays an important role in the development of hypertension and studies have shown that the pannexin-1 channel is involved in the signalling of the sympathetic activity to the vascular bed.
- Trial name
- IMPROVEH (NCT03778489)
- Testing
- Training
- Where
- Denmark
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Copenhagen
Obesity, Type 2 Diabetes Mellitus
Brown Adipose Tissue and Body Mass Index
In this study the investigators aim to investigate whether the sympathetic stimulation of BAT, as assessed with a 123I-metaiodobenzylguanidine single-photon emission computed tomography computed tomography scan, differs between…
- Trial name
- NCT02173834
- Testing
- 18F- fluorodeoxyglucose-positron emission tomography Computed Tomography scan and 123I-metaiodobenzylguanidine-single-photon emission computed tomography scan
- Where
- Netherlands
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Microvascular Angina, Hypertension
Effects of Intensive Long-Term Vasodilation in Hypertensive Patients With Microvascular Angina Pectoris
The purpose of this study is to determine if long-term vasodilatory treatment is more effective than the standard treatment in hypertensive patients with microvascular angina pectoris
- Trial name
- NCT00424801
- Testing
- Lercanidipine, Valsartan, Nicorandil
- Where
- Denmark
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Fibromyalgia
Electrophysiological Findings in Fibromyalgia Patients
Fibromyalgia Syndrome (FMS); It is a chronic condition characterized by widespread body pain, sleep disturbance, fatigue, impaired cognitive functions, and anxiety (1).
- Trial name
- NCT04845737
- Testing
- sympathetic skin response measurement
- Where
- Turkey (Türkiye)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Abant Izzet Baysal University
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
Parkinson Disease, Neuroendocrine Tumors
124I-MIBG Tracer Evaluation of Myocardial Sympathetic Denervation and Assessment of Neuroendocrine Tumors.
The Feasibility of Novel 124I-MIBG Tracer in Evaluation of Myocardial Sympathetic Denervation and Assessment of Neuroendocrine tumors. Comparison with 123I-MIBG.
- Trial name
- NCT01931488
- Testing
- MIBG label with I123 or I124, SPECT imaging
- Where
- Israel
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Tel-Aviv Sourasky Medical Center