Clinical trials: Amino Acid
Urea Cycle Disorder
Manipulating the Gut Microbiome Study
The objective is to determine if acetohydroxamic acid (AHA) can prevent hydrolysis of urea by inhibiting the bacterial urease of gut flora of both healthy control adults as well as adults with urea cycle disorders
- Trial name
- NCT03181828
- Testing
- Acetohydroxamic Acid Oral Tablet, No treatment
- Where
- United States
- Volunteers
- 4 people, healthy volunteers welcome
- Sponsor
- Nicholas Ah Mew
Cardiovascular Diseases, Cardiovascular Abnormalities
The Effects of the Dietary Supplement CardioFlex Q10 on Reducing Cardiovascular Disease Risk Factors in Adults
Cardiovascular diseases (CVD), primarily heart disease and stroke, are the leading causes of death and prescription drug use in Canada.
- Conditions
- Cardiovascular Diseases, Cardiovascular Abnormalities, Heart Attack, Stroke
- Trial name
- NCT03826914
- Testing
- CardioFlex Q10
- Where
- Canada
- Volunteers
- 69 people, healthy volunteers welcome
- Sponsor
- University of Manitoba
Phenylketonuria (PKU)
A Pilot Study on Diurnal Variation
This self-controlled, prospective, pilot study is designed to gather information regarding the diurnal variation (changes that occur each day) in the levels of plasma phenylalanine (Phe) and tyrosine in patients with…
- Trial name
- NCT01806051
- Testing
- Kuvan
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- Dr. Linda Randolph
Urea Cycle Disorders
PCORI Urea Cycle Disorder Study
Urea cycle disorders (UCD) are genetic disorders caused by the liver's inability to break down ammonia from proteins; ammonia then accumulates and is toxic to the brain.
- Trial name
- NCT02740153
- Testing
- No Intervention Given
- Where
- United States
- Volunteers
- 187 people, healthy volunteers welcome
- Sponsor
- Children's National Research Institute
Sarcopenia, Diabetes Mellitus
Identifying Therapeutic Targets of Accelerated Sarcopenia
The proposed research is designed to identify the mechanisms that can accelerate loss of muscle size, strength and physical function in type 2 diabetes and with hospitalization in older persons.
- Conditions
- Sarcopenia, Diabetes Mellitus, Aging
- Trial name
- NCT03118050
- Testing
- Resistance exercise training, Bed rest, Intensive physical therapy
- Where
- United States
- Volunteers
- 95 people, healthy volunteers welcome
- Sponsor
- The University of Texas Medical Branch, Galveston
Ornithine Transcarbamylase Deficiency
Investigation of Brain Nitrogen in Partial Ornithine Transcarbamylase Deficiency (OTCD) Using 1 H MRS, DTI, and fMRI
The purpose of this study is to use various types of MRI and cognitive testing to evaluate changes in the brain and cognitive function that occur in subjects with ornithine transcarbamylase deficiency (OTCD) relative to healthy…
- Trial name
- NCT01569568
- Testing
- MRI scanning, Cognitive testing
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- Andrea Gropman
Phenylketonuria
Phenylketonuria, Oxidative Stress, and BH4
The purpose of this study is to see how tetrahydrobiopterin therapy (BH4; also known as sapropterin dihydrochloride or Kuvan) affects measures of oxidative stress and endothelial function in patients with Phenylketonuria (PKU).
- Trial name
- NCT01395394
- Testing
- Kuvan, Meal Challenge
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Emory University
Hereditary Tyrosinemia, Type I
Bioequivalence Study of Two Oral Nitisinone Formulations to Treat Hereditary Tyrosinemia (HT-1)
The purpose of this study is to determine whether Nitisinone 10 mg Tablets (Test Product 1) and Nitisinone 10 mg Tablets 'Baked' for 6 months @ 40°C/75% RH (Test Product 2) are bioequivalent to the reference product Orfadin 10 mg…
- Trial name
- NCT02750345
- Testing
- Nitisinone, Nitisinone Baked Tablet, Orfadin
- Where
- South Africa
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Cycle Pharmaceuticals Ltd.
Obesity, Type2diabetes
The Effects of Glucagon on Hepatic Metabolism
Whether impaired postprandial glucagon suppression in prediabetes and T2DM is an attempt to overcome resistance to glucagon's actions on hepatic AA catabolism, a defect in α-cell function, or a combination of both are important…
- Conditions
- Obesity, Type2diabetes, NAFLD
- Trial name
- NCT05500586
- Testing
- Glucagon response study
- Where
- United States
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Adrian Vella
Urea Cycle Disorders, Inborn
Comparative Efficacy of Phenylbutyrate (PBA) vs. Benzoate in Urea Cycle Disorders
The investigators will study and compare how effectively sodium phenylbutyrate, sodium benzoate, and a combination of the two, help excrete nitrogen in healthy volunteers.
- Trial name
- BPA/Benzoate (NCT02111200)
- Testing
- Sodium Benzoate, Sodium Phenylbutyrate
- Where
- United States
- Volunteers
- 7 people, healthy volunteers welcome
- Sponsor
- Baylor College of Medicine
Growth Hormone Treatment, Aging
Effects of an Amino Acid-Based hGH Secretagogue on Triiodythyronine
In a recent randomized, double-blind, cross-over clinical trial, serum growth hormone (hGH) increased 682% above baseline 120 minutes after oral administration of an amino acid-based dietary supplement (SeroVital), p=0.01 vs…
- Trial name
- NCT02987868
- Testing
- Amino acid supplement first day, Amino acid supplement second day
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Pennington Biomedical Research Center
Vitamin B6 Deficiency
Vitamin B6 Effects for Women Taking Birth Control Pills
Chronically inadequate B6 nutritional status is associated with aberrant one-carbon (1C) metabolism and health. Plasma pyridoxal phosphate (PLP) >30 nmol/L often has been considered to be the cutoff indicative of nutritional…
- Trial name
- NCT01128244
- Testing
- Vitamin B6, Infusion of labeled serine, methionine and leucine
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- University of Florida
Sarcopenia
Effect of an EAA/Whey Composition on Protein Metabolism
Sarcopenia, a progressive loss of muscle mass, strength and function, is an inevitable natural process of aging. While it may be impossible to completely reverse the progress of sarcopenia, it is well established that intake of…
- Trial name
- NCT03502941
- Testing
- 6.3 g of EAAs mixture and whey protein isolate, 12.6 g of EAAs mixture and whey protein isolate, 12.6 g of whey protein isolate
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- University of Arkansas
Chronic Traumatic Brain Injury
Association of Amino Acid Prevalence and Chronic Brain Injury
Years after a suffering a brain injury, individuals remain in a physically and cognitively impaired state. The investigators believe that the concentrations of amino acids in the blood are chronically altered and yield negative…
- Trial name
- NCT02113124
- Where
- 3 sites in United States
- Volunteers
- 43 people, healthy volunteers welcome
- Sponsor
- Brent Masel
Phenylketonuria
Nutritional and Neurotransmitter Changes in PKU Subjects on BH4
HYPOTHESIS: The investigators hypothesize that KuvanTM therapy could influence nutritional and body composition parameters and neurotransmitter concentrations in pediatric and adult PKU subjects.
- Trial name
- BH4&PKU (NCT00688844)
- Testing
- KuvanTM Therapy
- Where
- 2 sites in United States
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- Emory University
Disaster, Vulnerable Populations
Nurses Taking On Readiness Measures - Mercer County, New Jersey
Nurses Taking On Readiness Measures (N-TORM) is an innovative nurse-driven household emergency preparedness (HEP) intervention modeled after an existing community intervention provided by emergency management personnel.
- Trial name
- NTORM (NCT05455580)
- Testing
- Nurses Taking On Readiness Measures (N-TORM)
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Hunter College of City University of New York
Osteoarthritis
Muscle Regrowth During Physical Rehabilitation and Amino Acid Supplementation
The general hypothesis is that in older adults muscle regrowth after an acute musculoskeletal stress will be positively influenced by traditional physical rehabilitation, and further enhanced by nutritional supplementation.
- Trial name
- NCT00760383
- Testing
- Essential amino acids, Alanine
- Where
- 2 sites in United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Oregon
Hereditary Tyrosinemia, Type I
Bioequivalence Study of Two Nitisinone Formulations Compared to Orfadin
The purpose of this study is to determine whether Nitisinone 10 mg Tablets (Test Product 1 (TP1)) and Nitisinone 10 mg Tablets High Compritol (Test Product 2 (TP2)) are bioequivalent to the reference product Orfadin 10 mg…
- Trial name
- NCT02750709
- Testing
- Nitisinone, Nitisinone 10 mg Tablet High Compritol, Orfadin
- Where
- South Africa
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Cycle Pharmaceuticals Ltd.
Brain Diseases, Metabolic, Inborn, Urea Cycle Disorder
Neurologic Injuries in Adults With Urea Cycle Disorders
Urea cycle disorders (UCDs) are a group of rare inherited metabolism disorders. The purpose of this study is to evaluate how UCD-related neurologic injuries affect adults with one of the most common types of UCD.
- Conditions
- Brain Diseases, Metabolic, Inborn, Urea Cycle Disorder, Ornithine Transcarbamylase Deficiency
- Trial name
- NCT00472732
- Where
- 2 sites in United States
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Andrea Gropman
Endothelial Dysfunction, Hyperhomocysteinemia
Effect of L-Arginine and Pycnogenol on Light to Moderate Hypertension and Endothelial Function
The effect of a combination product (Verum ) with L-arginine, Pycnogenol, vitamin K2, R-(+)-alpha-lipoic acid and vitamins B6, B12 and folic acid is investigated in a double blind placebo-controlled cross-over study.
- Conditions
- Endothelial Dysfunction, Hyperhomocysteinemia, Hypertension Grade I, Subgroup "Borderline" (WHO)
- Trial name
- NCT02392767
- Testing
- Verum
- Where
- Germany
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Dr. Loges & Co. GmbH