Safety Study of a Vitamin E Supplement in Normal Volunteers and Those With Both Allergy and Asthma
Primary Purpose
Asthma
Status
Completed
Phase
Phase 1
Locations
United States
Study Type
Interventional
Intervention
Vitamin E supplement rich in gamma tocopherol
Sponsored by

About this trial
This is an interventional screening trial for Asthma focused on measuring vitamin E, gamma tocopherol, moderate to severe asthma, healthy subjects
Eligibility Criteria
Inclusion Criteria: allergic asthmatic cohort
- Specific allergy to at least one of the following allergen preparations: (House Dust Mite f, House dust mite p, Cockroach, Tree mix, Grass Mix, Weed Mix, Mold Mix 1, Mold Mix 2, Rat, Mouse, Guinea Pig, Rabbit, Cat or Dog) confirmed by positive immediate skin test response.
- Oxygen saturation of > 94 % at baseline
- Blood pressure within the following parameters (Systolic between 150 - 90,Diastolic between 100-60 mm Hg)
- Moderate or severe persistent asthma according to NHLBI definitions including history of one of the following: 1)Episodic wheezing, chest tightness or shortness of breath consistent with asthma occurring at least once a week that may affect activity;2)Asthma symptoms occurring at night or during sleep at least 1 time per week; 3)measured FEV1 or FVC is <80% of predicted; OR 4)physician diagnosed moderate or severe persistent asthma which is currently treated or controlled with maintenance medication including moderate or high dose inhaled corticosteroid, or any dose of inhaled corticosteroid and a long-acting inhaled B2-agonist
Inclusion Criteria- healthy volunteer cohort
- Oxygen saturation > 94 % at baseline
- Blood pressure within the following parameters (Systolic between 150 - 90, Diastolic between 100-60 mm Hg)
- No active allergies
- No physician diagnosis of asthma since age 6
Exclusion Criteria:
- Any chronic medical condition considered by the PI as a contraindication to receiving gamma tocopherol, including significant cardiovascular disease, diabetes requiring medication, chronic renal disease, chronic thyroid disease, kidney disease or coagulation defects.
- Use of inhaled steroids, cromolyn or leukotriene inhibitors (montelukast or zafirlukast) which have been used for at least one month are allowed. Patients must be on a stable regimen of maintenance asthma therapy which has not changed in the past month prior to entrance into the study.
- NSAID or ASA use within 48 hours of beginning the study, and inability to suspended use of these medications during the length of the study.
- Use of anticoagulants including warfarin, heparin, or clopidogrel.
- Diagnosis of anemia or abnormal blood counts at screening
- Pregnancy or nursing a baby. As this is a phase I study, the potential risk to a fetus cannot be justified.
- Children will not be included in this study as the potential risk to a growing child cannot be justified.
- Adults age 51 and older are excluded as the potential for concomitant illness in this population increases the risk for confounding the data.
- Known vagal response to venipuncture
- Abnormal PT or PTT values at screening
Sites / Locations
- Center for Environmental Medicine, Asthma and Lung Biology at the University of North Carolina
Arms of the Study
Arm 1
Arm Type
Experimental
Arm Label
1
Arm Description
Vitamin E supplement rich in gamma tocopherol
Outcomes
Primary Outcome Measures
serum levels of gamma tocopherol and its metabolites after eight days of supplementation
Secondary Outcome Measures
latency between the first dose and peak levels of gamma tocopherol
effect of gamma tocopherol supplementation on other antioxidants
effect of supplementation with gamma tocopherol on changes on cell surface marker expression on circulating monocytes and macrophages and on these cells' response to ex vivo LPS challenge
Full Information
NCT ID
NCT00386178
First Posted
October 6, 2006
Last Updated
December 20, 2010
Sponsor
University of North Carolina, Chapel Hill
Collaborators
National Center for Complementary and Integrative Health (NCCIH)
1. Study Identification
Unique Protocol Identification Number
NCT00386178
Brief Title
Safety Study of a Vitamin E Supplement in Normal Volunteers and Those With Both Allergy and Asthma
Official Title
Comparison of Gamma-tocopherol Supplementation in Allergic Asthmatics and Normal Volunteers
Study Type
Interventional
2. Study Status
Record Verification Date
December 2010
Overall Recruitment Status
Completed
Study Start Date
October 2006 (undefined)
Primary Completion Date
June 2007 (Actual)
Study Completion Date
June 2007 (Actual)
3. Sponsor/Collaborators
Name of the Sponsor
University of North Carolina, Chapel Hill
Collaborators
National Center for Complementary and Integrative Health (NCCIH)
4. Oversight
Data Monitoring Committee
No
5. Study Description
Brief Summary
Gamma tocopherol (gt) is a naturally occurring form of vitamin E that is found in many foods, and is also commercially available as a vitamin supplement. The purpose of this Phase 1 research study is to see if two doses of gt, 600mg and 1200mg, are safe (do not cause gastrointestinal distress or other problems), and can cause changes in your blood levels of gt and other antioxidants. This study will also examine if there is a difference in response between asthmatic and non-asthmatic adults when taking the same dose of gt. Phase 1 research studies like this one are not intended to be a treatment, but are a scientific investigation.
Detailed Description
This is designed as an open label study of the effect of 600 mg and 1200mg gamma tocopherol (gt), orally administered daily for 8 days, on serum antioxidant levels in asthmatics and healthy volunteers. Each course of gamma tocopherol will be followed by a 7-8 day wash out period and serum testing to ensure that blood levels are back to baseline prior to starting the next course. The gamma tocopherol will be obtained from Yasoo Health Inc and contains 623mg gt per 830 mg gelatin capsule.
Allergy skin testing to a battery of allergens common to the region will be performed to determine the state of atopy both prior to drug administration and after the 8 day course. Allergic volunteers will be asked to abstain from taking any antihistamines during the 3 days prior to the skin testing. Repeat allergy testing will not be performed on subjects unable to hold antihistamines for health reasons, or on non-allergic volunteers who demonstrate no response to baseline testing. Spirometry will be performed to determine the current level of lung function. Subjects will be asked to refrain from taking vitamin supplements, non-steroidal anti-inflammatory medications and other dietary supplements.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Asthma
Keywords
vitamin E, gamma tocopherol, moderate to severe asthma, healthy subjects
7. Study Design
Primary Purpose
Screening
Study Phase
Phase 1
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
Non-Randomized
Enrollment
16 (Actual)
8. Arms, Groups, and Interventions
Arm Title
1
Arm Type
Experimental
Arm Description
Vitamin E supplement rich in gamma tocopherol
Intervention Type
Drug
Intervention Name(s)
Vitamin E supplement rich in gamma tocopherol
Other Intervention Name(s)
Maxi-Gamma
Intervention Description
daily dose of Vitamin E supplement rich in gamma tocopherol
Primary Outcome Measure Information:
Title
serum levels of gamma tocopherol and its metabolites after eight days of supplementation
Time Frame
eight days
Secondary Outcome Measure Information:
Title
latency between the first dose and peak levels of gamma tocopherol
Time Frame
levels at points within 24 hours
Title
effect of gamma tocopherol supplementation on other antioxidants
Time Frame
8 days
Title
effect of supplementation with gamma tocopherol on changes on cell surface marker expression on circulating monocytes and macrophages and on these cells' response to ex vivo LPS challenge
Time Frame
1-8 days
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
50 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: allergic asthmatic cohort
Specific allergy to at least one of the following allergen preparations: (House Dust Mite f, House dust mite p, Cockroach, Tree mix, Grass Mix, Weed Mix, Mold Mix 1, Mold Mix 2, Rat, Mouse, Guinea Pig, Rabbit, Cat or Dog) confirmed by positive immediate skin test response.
Oxygen saturation of > 94 % at baseline
Blood pressure within the following parameters (Systolic between 150 - 90,Diastolic between 100-60 mm Hg)
Moderate or severe persistent asthma according to NHLBI definitions including history of one of the following: 1)Episodic wheezing, chest tightness or shortness of breath consistent with asthma occurring at least once a week that may affect activity;2)Asthma symptoms occurring at night or during sleep at least 1 time per week; 3)measured FEV1 or FVC is <80% of predicted; OR 4)physician diagnosed moderate or severe persistent asthma which is currently treated or controlled with maintenance medication including moderate or high dose inhaled corticosteroid, or any dose of inhaled corticosteroid and a long-acting inhaled B2-agonist
Inclusion Criteria- healthy volunteer cohort
Oxygen saturation > 94 % at baseline
Blood pressure within the following parameters (Systolic between 150 - 90, Diastolic between 100-60 mm Hg)
No active allergies
No physician diagnosis of asthma since age 6
Exclusion Criteria:
Any chronic medical condition considered by the PI as a contraindication to receiving gamma tocopherol, including significant cardiovascular disease, diabetes requiring medication, chronic renal disease, chronic thyroid disease, kidney disease or coagulation defects.
Use of inhaled steroids, cromolyn or leukotriene inhibitors (montelukast or zafirlukast) which have been used for at least one month are allowed. Patients must be on a stable regimen of maintenance asthma therapy which has not changed in the past month prior to entrance into the study.
NSAID or ASA use within 48 hours of beginning the study, and inability to suspended use of these medications during the length of the study.
Use of anticoagulants including warfarin, heparin, or clopidogrel.
Diagnosis of anemia or abnormal blood counts at screening
Pregnancy or nursing a baby. As this is a phase I study, the potential risk to a fetus cannot be justified.
Children will not be included in this study as the potential risk to a growing child cannot be justified.
Adults age 51 and older are excluded as the potential for concomitant illness in this population increases the risk for confounding the data.
Known vagal response to venipuncture
Abnormal PT or PTT values at screening
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
David B Peden, MD, MS
Organizational Affiliation
University of North Carolina at Chapel Hill, Dept of Pediatrics / Center for Environmental Medicine, Asthma and Lung Biology
Official's Role
Principal Investigator
Facility Information:
Facility Name
Center for Environmental Medicine, Asthma and Lung Biology at the University of North Carolina
City
Chapel Hill
State/Province
North Carolina
ZIP/Postal Code
27599-7310
Country
United States
12. IPD Sharing Statement
Links:
URL
http://www.med.unc.edu/cemalb
Description
Center for Environmental Medicine, Asthma and Lung Biology
Learn more about this trial
Safety Study of a Vitamin E Supplement in Normal Volunteers and Those With Both Allergy and Asthma
We'll reach out to this number within 24 hrs