Clinical trials: Sympathetic Disorder
Autonomic Nervous System Diseases
PET Scan in Patients With Neurocardiologic Disorders
This study is designed to use PET scans in order to measure activity of the sympathetic nervous system. The sympathetic nervous system is the portion of the nervous system that maintains a normal supply of blood and fuel to…
- Trial name
- NCT00001418
- Where
- United States
- Volunteers
- 335 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Autonomic Nervous System Diseases
Sympathetic-parasympathetic Ratio of Our Gaze
ABSTRACT BACKGROUND The existence of the retinohypothalamic pathway suggests that light may influence autonomic outflow activity.
- Trial name
- NCT03322904
- Testing
- iris photography
- Where
- Turkey (Türkiye)
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- Kecioren Education and Training Hospital
Syncope
Evaluation of Chronic Orthostatic Intolerance
This study will conduct tests with patients with primary chronic orthostatic intolerance (COI) to learn more about this disorder of the autonomic nervous system.
- Trial name
- NCT00069693
- Where
- 3 sites in United States, Canada
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Autistic Disorder, Autism Spectrum Disorder
Autonomic Modulation and Facial Expression in Autism Spectrum Disorder
Background: the autism spectrum disorders (ASD) can be related with abnormalities in cortical structures and cause behavior imbalances. In addition, as soon as the diagnosis is done, the better will be the prognosis.
- Trial name
- NCT02997566
- Testing
- Autonomic evaluation
- Where
- Brazil
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Universidade Estadual Paulista Júlio de Mesquita Filho
Healthy, Obesity
Fat Tissue Microperfusion to Measure Leptin Secretion and Its Relations With Fat Breakdown in Humans
Leptin is a hormone that acts in the body as a chemical messenger. It is produced in fat cells and is believed to regulate body weight in humans. Leptin decreases appetite and influences the energy balance of the body.
- Trial name
- NCT00001722
- Where
- United States
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Abdominal Aortic Aneurysm
Relation betwEen Abdominal Aorta and Carotid Artery Responses to SymPathetic stimulatiON uSing duplEx Ultrasound
Abdominal aortic aneurysm (AAA) is a common vascular disease and associated with risk of rupture, but also with a high cardiovascular (CV) event rate. A key difficulty in AAA is predicting these life-threatening complications.
- Trial name
- RESPONSE (NCT04035252)
- Testing
- Carotid artery reactivity test (CAR-test)
- Where
- 2 sites in Netherlands
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Rijnstate Hospital
Healthy, Hyperalgesia
Positron Emission Tomography to Measure Pain and Pain Control
This study will examine how the brain processes pain signals and how the different parts of the brain work with each other in response to painful stimuli.
- Conditions
- Healthy, Hyperalgesia, Pain, Peripheral Nervous System Disease
- Trial name
- NCT00001307
- Testing
- Oxygen-15 Water, Capsaicin
- Where
- United States
- Volunteers
- 273 people, healthy volunteers welcome
- Sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
Autonomic Nervous System Disease, Healthy
Study of Norepinephrine Levels and Sympathetic Nervous System Activity
Brain and nerve cells communicate with each other by releasing and picking up chemicals called neurotransmitters. Norepinephrine is a neurotransmitter used by part of the nervous system activated during stress called the…
- Conditions
- Autonomic Nervous System Disease, Healthy, Hypertension
- Trial name
- NCT00001329
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Autonomic Nervous System Disease, Healthy
Blood Sampling for Neurochemical and Genetic Testing
This study involves sampling blood from both normal volunteers and patients with diseases known or suspected to involve body chemicals called catecholamines.
- Conditions
- Autonomic Nervous System Disease, Healthy, Hypertension, Pheochromocytoma
- Trial name
- NCT00001147
- Where
- United States
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)