HealthyPhase 1GammaToxNCT00631085
Effect of Gamma Tocopherol Supplementation on Neutrophil Response to 20,000 EU of Clinical Center Reference Endotoxin in Normal Adults
A Phase 1 study testing gamma tocopherol in people with Healthy, run by University of North Carolina, Chapel Hill at 1 site in United States.
Trial summary
The purpose of this research study is to learn whether high dose vitamin E (gamma tocopherol) will affect the way your body responds to an acute inflammation in your lungs. Vitamin E is found in soybean and vegetable oils as well as many plant seeds. Read more about this study
- Who is it for?
- Ages 18 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- gamma tocopherol
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 18 participants
- Where
- 1 siteUnited States
- Study dates
- May 2008to Jul 2009
- Phase
- Phase 1
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy nonsmoking volunteers with normal lung function
Who cannot join
- Chronic illness
- Asthma
- Active allergies
Trial locations and contacts
1 site in 1 country.
United States1 site
University of North Carolina CEMALB
Chapel Hill, North Carolina, 27599
About this study
The purpose of this research study is to learn whether high dose vitamin E (gamma tocopherol) will affect the way your body responds to an acute inflammation in your lungs. Vitamin E is found in soybean and vegetable oils as well as many plant seeds. Gamma tocopherol (gT), a component of vitamin E, composes 70-80% of Vitamin E in the U.S. diet. Alpha tocopherol (aT), another large component of vitamin E, makes up less than 10% of vitamin E in the U.S. diet, but is the major form in blood and tissue. It is also the major form of Vitamin E in over-the-counter supplements. However, gT has anti-inflammatory properties which are not present in aT. Preliminary data suggests that gT protects from ozone-induced exacerbation in animal studies, and previous studies have shown levels of gT are inversely associated with heart disease.
We will ask you to undergo a challenge with endotoxin, which is a bacterial component of air pollution. From other studies we have done, we know that if you inhale 20,000 EUs (endotoxin units) we will see an increase in the number of neutrophils (a type of white blood cell that your body produces to fight infection) in your lung cells without causing you to have flu-like symptoms. We will investigate if there is a change in your lung inflammatory cells after the endotoxin challenge when you take the gT versus when you take a placebo.
- Conditions
- Healthy
- Being tested
- gamma tocopherol
- Keywords
- healthy nonsmoking nonasthmatic volunteers
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
gamma tocopherolDrug
Maxi Gamma softgels 1200mg QD
| Study group | Role | What they receive |
|---|---|---|
| 1 | Other | Not described Receives: Drug: gamma tocopherol |
What is being measured
The primary outcome is the main question the study is designed to answer.
The primary goal of this study is to determine the effect of γT on endotoxin-induced airway inflammation in non-allergic, non-asthmatic subjects.
Measured: CCRE challenge after 7 days of treatment with gT or SO
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Mar 2008 (estimated)
- Study startMay 2008
- Primary completionJul 2009
- Study completionJul 2009
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HealthyStudies of the same condition, open and under way.
- More trials run by University of North Carolina, Chapel HillThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 18 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of North Carolina, Chapel Hill
- Sponsor type
- University, hospital or other
- Collaborators
- National Center for Complementary and Integrative Health (NCCIH)
- Investigators
- Michelle Hernandez, MD, Principal investigator, University of North Carolina
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00631085
- Sponsor's protocol ID
- GCRC 2678 IRB 08-0082
- Other IDs
- 5P01AT002620
- Acronym
- GammaTox
- Status last verified
- Apr 2011
- First submitted
- 28 Feb 2008
- Last updated
- 18 Apr 2011
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 18 Apr 2011. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Gamma Tocopherol Supplementation on Neutrophil Response to 20,000 EU of Clinical Center Reference Endotoxin in Normal Adults
- ClinicalTrials.gov ID
- NCT00631085
- Acronym / sponsor ID
- GammaTox / GCRC 2678 IRB 08-0082
- Conditions
- Healthy
- Keywords
- healthy nonsmoking nonasthmatic volunteers
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 18 participants (actual)
- Lead sponsor
- University of North Carolina, Chapel HillUniversity, hospital or other
- Collaborators
- National Center for Complementary and Integrative Health (NCCIH)
- Study start
- May 2008
- Primary completion
- Jul 2009 (actual)
- Study completion
- Jul 2009 (actual)
- First posted
- 7 Mar 2008 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this research study is to learn whether high dose vitamin E (gamma tocopherol) will affect the way your body responds to an acute inflammation in your lungs. Vitamin E is found in soybean and vegetable oils as well as many plant seeds. Gamma tocopherol (gT), a component of vitamin E, composes 70-80% of Vitamin E in the U.S. diet. Alpha tocopherol (aT), another large component of vitamin E, makes up less than 10% of vitamin E in the U.S. diet, but is the major form in blood and tissue. It is also the major form of Vitamin E in over-the-counter supplements. However, gT has anti-inflammatory properties which are not present in aT. Preliminary data suggests that gT protects from ozone-induced exacerbation in animal studies, and previous studies have shown levels of gT are inversely associated with heart disease.
We will ask you to undergo a challenge with endotoxin, which is a bacterial component of air pollution. From other studies we have done, we know that if you inhale 20,000 EUs (endotoxin units) we will see an increase in the number of neutrophils (a type of white blood cell that your body produces to fight infection) in your lung cells without causing you to have flu-like symptoms. We will investigate if there is a change in your lung inflammatory cells after the endotoxin challenge when you take the gT versus when you take a placebo.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| 1 | Other | Drug: gamma tocopherol |
Who may qualify
- Ages
- 18 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Healthy nonsmoking volunteers with normal lung function
Key exclusion criteria (3 listed)
- Chronic illness
- Asthma
- Active allergies
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| gamma tocopherolMaxi Gamma softgels 1200mg QD | Drug | 1 |
Primary outcome
The primary goal of this study is to determine the effect of γT on endotoxin-induced airway inflammation in non-allergic, non-asthmatic subjects.
Time frame: CCRE challenge after 7 days of treatment with gT or SO
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Apr 2011.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Michelle Hernandez, MD principal investigator
University of North Carolina
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing gamma tocopherol in people with Healthy, run by University of North Carolina, Chapel Hill at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 18 Apr 2011. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The primary goal of this study is to determine the effect of γT on endotoxin-induced airway inflammation in non-allergic, non-asthmatic subjects. (time frame: CCRE challenge after 7 days of treatment with gT or SO). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Apr 2011.