Clinical trials: Cerebral Blood Flow
Chronic Fatigue Syndrome
Use of Sildenafil (Viagra) to Alter Fatigue, Functional Status and Impaired Cerebral Blood Flow in Patients With CFS
Use of Viagra to Alter Symptoms in Patients with Chronic Fatigue Syndrome (CFS)
- Trial name
- NCT00598585
- Testing
- Sildenafil (Viagra)
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Charles Drew University of Medicine and Science
Child, Only, Essential Hypertension
Juvenile Essential Arterial Hypertension and Vascular Function
The main goal of this study is to investigate the association of the juvenile essential arterial hypertension with systemic micro- and macrovascular reactivity and cerebral vascular function, and to examine the potential impact…
- Trial name
- NCT05109013
- Where
- Croatia
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Josip Juraj Strossmayer University of Osijek
Hypoglycemia, Cerebral Blood Flow
External Carotid Blood Flow in Individuals With Post-Bariatric Hypoglycemia
This is a pilot study (small-scale study) that aims to understand more about how blood flow changes in people who have low blood sugar after bariatric surgery (post-bariatric hypoglycemia) compared to those who have had surgery…
- Trial name
- NCT07082478
- Testing
- in-ear device measuring blood flow
- Where
- United States
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Joslin Diabetes Center
Healthy, Brain Insulin Sensitivity
Long-Term Effects of Walnut Consumption on Brain Function
Rationale: Healthy foods, including mixed nuts, may improve brain function, which is essential for cognitive and metabolic health, and may contribute to improved food intake regulation.
- Conditions
- Healthy, Brain Insulin Sensitivity, Cerebral Blood Flow, Brain Vascular Function
- Trial name
- WalBrain (NCT07422220)
- Testing
- Walnuts
- Where
- Netherlands
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
Multiple Sclerosis, Relapse
Coagulation/Complement Activation and Cerebral Hypoperfusion in Relapsing-remitting Multiple Sclerosis
This is a multi-center, prospective, controlled study. MS patients (1° group: 30 patients in relapse; 2° group: 30 patients in remission) and age/sex-matched healthy controls (3° group: 30 subjects) will be enrolled in the study.
- Trial name
- NCT04380220
- Testing
- Blood samples and processing
- Where
- 3 sites in United States, Italy
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Regina Elena Cancer Institute
Cardiovascular Diseases, Hypertension
The Impact of KETO5 XOGenius Beverage on Markers of Physiological and Neurocognitive Health
The primary objectives of this application are to 1) investigate the effect of increased daily consumption of the Keto5 XOGenius beverage on outcomes associated with elevated risk for various neurocognitive and pathophysiological…
- Conditions
- Cardiovascular Diseases, Hypertension, Cognitive Decline, Diet
- Trial name
- NCT06318390
- Testing
- XO Genius
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- The University of Texas at Arlington
Cognitive Function, Mood
The Effects of Efalex Active 50+ on Cognitive Performance, Well-being and Cerebral Hemodynamics in Healthy Older Adults
Dietary intake of omega-3 polyunsaturated fatty acids (n-3 PUFAs) is inversely associated with cognitive decline and dementia (e.g. Kalmijn et al. 2004, Heude et al. 2003, Morris et al. 2005, Dullemeijer et al. 2009).
- Conditions
- Cognitive Function, Mood, Well-being, Cerebral Blood Flow
- Trial name
- NCT01185379
- Testing
- Efalex active 50+, DHA rich fish oil
- Where
- United Kingdom
- Volunteers
- 261 people, healthy volunteers welcome
- Sponsor
- Northumbria University
Amblyopia, Regional Blood Flow
Amblyopia and Neurovascular Coupling in the Retina of Humans
The visual disorder of amblyopia affects 2% to 3% of the population. Amblyopia is a developmental condition that is characterized by reduced vision of the eye due to the presence of a sensory impediment during visual development…
- Trial name
- NCT00312390
- Testing
- Flicker, Retinal Vessel Diameter, Retinal Blood Flow
- Where
- Austria
- Volunteers
- healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Endothelial Function, Cognition
Cognitive and Cerebral Blood Flow Effects of Vitamin C
This investigation is interested in the effects of high dose vitamin C on endothelial function in healthy humans. A high fat meal will be utilized to induce endothelial dysfunction.
- Trial name
- NCT01055418
- Testing
- Vitamin C
- Where
- United Kingdom
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Northumbria University
Stroke, Problem of Aging
Modulation of Cerebral Blood Flow Using Iron Chelators
The purpose of this study is determine if the iron chelator, desferrioxamine can increase blood levels of hypoxia-inducible transcription factor 1 (HIF-1 protein) and to see if there is a corresponding increase in blood flow to…
- Trial name
- DFO (NCT01365104)
- Testing
- desferrioxamine
- Where
- United States
- Volunteers
- 97 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Brain Concussion, Post-Concussion Syndrome
Cerebral Blood Flow Regulation and Concussions
The purpose of this study is to understand how biochemical markers in blood, balance disturbances, and cognitive performance are related to brain blood flow changes after a concussion.
- Trial name
- NCT02754206
- Where
- United States
- Volunteers
- 79 people, healthy volunteers welcome
- Sponsor
- Southern Methodist University
Alzheimer Disease, Dementia
Apolipoprotein E (APOE) Genotype Effects on Triglycerides and Blood Flow in the Human Brain
High fat feeding (HFF) increases the risk of Alzheimer's disease (AD) but individuals who carry the AD risk gene E4 paradoxically improve after acute HFF.
- Trial name
- NCT04692441
- Testing
- Heavy Cream
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- University of Washington
Preterm Labor, Cerebral Palsy
Calcium Channel Blockers Compared to Magnesium Sulfate in Fetal Cerebral Blood Flow
The aim of this study is to investigate the possible use of calcium channel as a neuroprotectant in cases with PTL. This will be done by comparing the effect they have on cerebral blood vessels with the already established MgSo4.
- Trial name
- NCT02591004
- Testing
- Magesium sulphate, Nifedipine, Doppler on fetal middle cerebral artery
- Where
- Egypt
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- Kasr El Aini Hospital
Obstructive Sleep Apnea, Hypertension
Effect of Selective and Nonselective Cyclooxygenase Enzyme Inhibition on Arterial Blood Pressure and Cerebral Blood Flow With Exposure to Intermittent Hypoxia in Humans
The study has been designed to assess the effect of cyclooxygenase inhibition on blood pressure, cerebral blood flow, ventilation and renal hemodynamics following chronic intermittent hypoxia exposure.
- Conditions
- Obstructive Sleep Apnea, Hypertension, Cardiovascular Diseases, Stroke
- Trial name
- NCT01280006
- Testing
- Intermittent hypoxia, Indomethacin, Celecoxib
- Where
- Canada
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Calgary
Healthy Males, Neuromuscular Function
Cerebral Blood Flow and PETCO2 on Neuromuscular Function During Environmental Stress
Environmental stress, such as low oxygen availability (hypoxia), has been associated with impaired neuromuscular performance; however, the mechanisms associated with these performance decrements remain unclear.
- Trial name
- NCT01830335
- Testing
- Indomethacin
- Where
- Canada
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Brock University
Cerebrovascular Circulation, Magnetic Resonance Imaging
Brain Blood Flow Responses During Exercise
Brain blood flow will be measured during exercise using magnetic resonance imaging.
- Trial name
- NCT05864950
- Testing
- MRI
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Normal, EEG
Exploratory Study on Artifact Denoising of Cerebral Blood Flow and EEG Data in Ambulance Settings
The purpose is to assess the extent of digital noise occurring during the measurement of cerebral blood flow and EEG in healthy adults within an ambulance setting and to explore the possibility of identifying and correcting…
- Conditions
- Normal, EEG, FNIRS
- Trial name
- NCT06701708
- Testing
- Participants are not assigned to interventions based on a protocol.
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Pusan National University Yangsan Hospital
Hemodynamics of Cranial Arteries, Headache
The Hemodynamics Effect of Glibenclamide on Levcromakalim Assessed by High Resolution Magnetic Resonance Angiography (MRA) Technique in a Randomized Double-blind Cross-over Placebo-controlled Study With Healthy Volunteers
To investigate the effect of levcromakalim/placebo infusion on cranial arteries after glibenclamide administration.
- Conditions
- Hemodynamics of Cranial Arteries, Headache, Cerebral Blood Flow
- Trial name
- NCT03886922
- Testing
- Levcromakalim, Saline
- Where
- 2 sites in Denmark
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Danish Headache Center
Alzheimer's Disease
Memory Imaging of Normal Aging
The purpose of this study is to develop imaging techniques that can distinguish functional brain changes in people at high risk for dementia years prior to onset of clinical memory problems from those with normal changes of aging.
- Trial name
- NCT00315575
- Testing
- BOLD and Perfusion brain MRI
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- National Institute on Aging (NIA)
Multiple Sclerosis
Transcranial Electrical Stimulation in Multiple Sclerosis
First the investigators will examine if the blood flow in the brain is different in patients with Multiple Sclerosis compared to healthy volunteers. HOW? The blood flow of the subjects is imaged by use of a special MRI-technique.
- Trial name
- TEMS (NCT06966128)
- Testing
- transcranial Direct Current Stimulation
- Where
- 2 sites in Belgium
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Universitair Ziekenhuis Brussel