- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02113124
Association of Amino Acid Prevalence and Chronic Brain Injury
Study Overview
Status
Conditions
Detailed Description
The purpose of this study is to evaluate the levels of Amino Acids in adult individuals with chronic (> 2 years) traumatic brain injury (TBI) when compared to a non-brain injured cohort population.
Preliminary data from an assay of amino acids in individuals with chronic TBI compared to an assay of individuals without a TBI revealed significantly lower concentrations of amino acids within the TBI group.
The composition and structure of the oral and fecal microbiome will be determined by 16S rDNA sequencing. Taxonomic and community structure profiles will be treated as outcome variables and modeled together with the participant's plasma amino acid concentration, years post-injury, age, sex and other variables to determine correlations. These correlations may improve our understanding of the diminished amino acid metabolism within the chronic TBI population.
The endpoint will identify the microbiome structure and composition by 16S rRNA gene sequencing within the TBI and healthy participants and to assess the participant's amino acid concentrations and other participant demographics and phenotypic characteristics (years post-injury, age, sex). This comparison may improve our understanding of the diminished amino acid metabolism within the chronic TBI population.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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California
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Bakersfield, California, United States, 93313
- Centre for Neuro Skills
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Texas
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Dallas, Texas, United States, 75038
- Centre for Neuro Skills
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Galveston, Texas, United States, 77550
- Transitional Learning Center
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Willing to donate 10 ml of blood
- Willing to donate oral tissue sample
- Willing to donate fecal sample
Exclusion Criteria:
- (for brain injured group) have a chronic (greater than two years) traumatic brain injury.
- Unable to provide to give voluntary informed consent
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Chronic brain injury
Individuals in this group have suffered a brain injury more than 2 years prior to study.
Ages range from 21 to 70.
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Uninjured control
This group of individuals have no history of brain injury.
Ages range between 21 and 70.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Change From Baseline of Concentrations of Essential Amino Acid at 1.5 Hours After Eating
Time Frame: Samples collected on day 1 following 8 hour fasting period and again 90 minutes after eating a predetermined meal
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5 ml of blood will be acquired following a 8-hour fasting period to determine baseline concentrations of amino acids.
A meal will then be provided and another blood sample will be acquired 90 minutes after completing the meal to examine the change in amino acid concentration.
These samples will be used to determine the levels of each essential amino acid present.
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Samples collected on day 1 following 8 hour fasting period and again 90 minutes after eating a predetermined meal
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Brent E Masel, MD, Transitional Learning Center
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- TLC IRB #200
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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