- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02885025
Effects of Broccoli Sprout Extract on Allergy Rhinitis
May 26, 2020 updated by: VA Office of Research and Development
Effects of Broccoli Sprout Extract on Allergic Rhinitis
Allergic rhinitis is a common illness suffered among US Veterans.
There are medications that help relieve allergy symptoms, including nasal steroid sprays and antihistamines.
Some patients have increase symptoms with exposure to their trigger, such as a grasses when combined with pollution due to oxidative stress from pollution.
In this study, patients with allergic rhinitis to grass will be given broccoli sprout extract that contains an antioxidant sulforaphane do see if there is beneficial effect in these patients.
Study Overview
Status
Completed
Conditions
Detailed Description
Allergic rhinitis is a common illness suffered among US Veterans.
Despite the availability of medications, many patients fail to get adequate control of symptoms especially in high pollutant areas.
Southern California air pollutants, like diesel exhaust particles may act as adjuvants to allergens leading to an exaggerated allergic response in certain individuals.
These individuals may lack adequate Glutathione transferase activity; necessary to protect cells against pollutant induced oxidative stress.
Sulforaphane has been shown to protect against oxidative stress.
The investigators hypothesize consumption of foods containing high levels of sulforaphane are beneficial to US Veterans with GST deficiencies suffering from allergic rhinitis.
In the investigators' preliminary data, the investigators discovered administration of broccoli sprout extract rich in sulforaphane leads to diminished nasal inflammatory reaction brought on by diesel exhaust particles though did not have sufficient patient numbers to prove an association with GST deficiency.
The investigators propose a 3 week randomized clinical trial comparing broccoli sprout extract consumption with nasal corticosteroid administration after subjects with allergic rhinitis undergo a Timothy, Bermuda or Johnson grass nasal challenge.
In Aims 1 and 2, the investigators will compare clinical (nasal symptom scores and peak nasal inspiratory flows) and laboratory (inflammatory cytokines, eosinophil cationic protein, tryptase) measurements between four groups: nasal corticosteroid, broccoli sprout extract, nasal corticosteroid plus broccoli sprout extract, and placebo.
Aim 3 focuses on exploratory genetic analysis of the 3 glutathione S-transferase (GST) genes to determine if correlations exist between the inability to produce GST enzyme and the response to broccoli sprout extract.
At the conclusion of this study, the investigators will gain further knowledge of which patients benefit from anti-oxidant nutritional supplementation in treating allergic rhinitis.
Study Type
Interventional
Enrollment (Actual)
47
Phase
- Phase 2
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
California
-
West Los Angeles, California, United States, 90073
- VA Greater Los Angeles Healthcare System, West Los Angeles, CA
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
Inclusion Criteria
- Females and males 18 years or older.
- History consistent with seasonal allergic rhinitis consistent with grass allergy (symptoms during summer months, June through August, for at least two consecutive seasons).
- Not currently taking any medications for allergic rhinitis.
- Provide written informed consent.
- Willing and able to comply with all aspects of the protocol.
Exclusion Criteria:
- The subject has any uncontrolled or serious disease, or any medical or surgical or condition that in the opinion of the investigator(s) could affect the subject's safety and/or interfere with the study assessments.
- History of anaphylaxis to environmental allergens or an unknown trigger.
- History of broccoli allergy
- Recent upper respiratory infection (less than 4 weeks prior to study) or other active Infection.
- Active smoker
- Currently receiving allergy immunotherapy.
- History of rhinitis exacerbation within the past 2 weeks.
- Use of non-selective Beta-Blocker.
- Inability to give written informed consent.
- History or evidence of non-stable cognitive capacity within less than 1 year (i.e. Alzheimer's disease, dementia, bipolar disorder) that in the opinion of the investigator(s) could affect the subject's safety and/or interfere with the study assessments.
- Pregnancy
- Perennial rhinitis
- Uncontrolled asthma
- Forced Expiratory Volume in 1 second <70% predicted at screening.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: BSE + Nasal Fluticasone
subjects will be randomized into 1 of 4 arms:
|
Broccoli Sprout Extract contains the antioxidant Sulforaphane which is the active ingredient being studies.
fluticasone is a nasal steroid that is currently approved for treatment of allergic rhinitis.
|
Active Comparator: Broccoli Sprout Extract + normal saline nasal spray
subjects will be randomized into 1 of 4 arms:
|
Broccoli Sprout Extract contains the antioxidant Sulforaphane which is the active ingredient being studies.
normal saline to replace nasal fluticasone in specific arms of the study
|
Active Comparator: Placebo Pill + Nasal Fluticasone
subjects will be randomized into 1 of 4 arms: 1. Broccoli Sprout Extract + Nasal Fluticasone 2 Broccoli Sprout Extract + normal saline nasal spray 3. Placebo Pill + Nasal Fluticasone 4. Placebo Pill + normal saline nasal spray |
fluticasone is a nasal steroid that is currently approved for treatment of allergic rhinitis.
a tablet similar to the actual broccoli sprout extract though without BSE.
|
Placebo Comparator: Placebo Pill + normal saline nasal spray
subjects will be randomized into 1 of 4 arms:
|
normal saline to replace nasal fluticasone in specific arms of the study
a tablet similar to the actual broccoli sprout extract though without BSE.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Total Nasal Symptom Score (TNSS) Change From Baseline to 3 Weeks of Randomly Assigned Treatment
Time Frame: measures at various points following challenge at baseline and 21 days
|
The Immediate Total Nasal Symptom Score (TNSS): The TNSS has been used in prior interventional studies to evaluate different treatment modes for allergic rhinitis.
The score will consist of subjects rating 4 symptoms (nasal congestion/postnasal drainage, nasal pruritus, rhinorrhea, or sneezing) on a scale of 0 to 3, where 0=no symptoms present, 1=mild symptoms that do not interfere with activity, 2=moderate symptoms that are slightly bothersome symptoms with slight interference with activity and/or nighttime sleep, or 3=severe symptoms with interference with activity and nighttime sleep.
Thus minimal value would be 0 vs. maximal value would be a score of 12.
A higher score correlates with higher rhinitis activity.
Diminished scores following an intervention is consistent with an improvement in rhinitis symptoms.
|
measures at various points following challenge at baseline and 21 days
|
Peak Nasal Inspiratory Flow (PNIF) Change From Baseline to 3 Weeks of Randomly Assigned Treatment
Time Frame: 21 days (from randomization to completion)
|
peak nasal inspiratory flow (PNIF) measures the peak flow during nasal inspiration with an approved device utilized in other studies.
Measurements will be performed with TNSS (above).
|
21 days (from randomization to completion)
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Interleukin 5 (IL5)
Time Frame: 21 days (from randomization to completion)
|
Interleukin 5 (IL5) is considered a T2 cytokine that increases with exacerbations of atopic disease, including allergic rhinitis.
Cytokine measurements are in pg/ml.
Values are recorded with log transformation.
Note that measurements are on a continuous score.
Lower values are consistent with less T2 inflammation which is consistent with diminished or lower atopic/allergic response.
|
21 days (from randomization to completion)
|
Interleukin 4 (IL4)
Time Frame: 21 days (from randomization to completion)
|
Interleukin 4 (IL4) is considered a T2 cytokine that increases with exacerbations of atopic disease, including allergic rhinitis.
Cytokine measurements are in pg/ml.
Values are recorded with log transformation.
Note that measurements are on a continuous score.
Lower values are consistent with less T2 inflammation which is consistent with diminished or lower atopic/allergic response.
|
21 days (from randomization to completion)
|
Interleukin 6 (IL6)
Time Frame: 21 days (from randomization to completion)
|
Interleukin 6 is a cytokine present during inflammatory process.
This is recorded in pg/ml.
Below is the log transformation of the pg/ml unit.
Note that measurements are on a continuous score.
Lower values are consistent with less inflammation which could occur with an inflammatory response.
|
21 days (from randomization to completion)
|
Interleukin 8 (IL8)
Time Frame: 21 days (from randomization to completion)
|
Interleukin 8 s a cytokine that will increase with inflammation.
Below is the log transformation of the pg/ml unit.
Note that measurements are on a continuous score.
Lower values are consistent with less inflammation which could occur with an inflammatory response.
|
21 days (from randomization to completion)
|
Interleukin 13 (IL13)
Time Frame: 21 days (from randomization to completion)
|
Interleukin 13 (IL13) is considered a T2 cytokine that increases with exacerbations of atopic disease, including allergic rhinitis.
Cytokine measurements are in pg/ml.
Values are recorded with log transformation.
Note that measurements are on a continuous score.
Lower values are consistent with less T2 inflammation which is consistent with diminished or lower atopic/allergic response.
|
21 days (from randomization to completion)
|
Interleukin 1 Beta (IL1b)
Time Frame: 21 days (from randomization to completion)
|
IL1b is a cytokine that will increase with inflammation.
Below is the log transformation of the pg/ml unit.
Note that measurements are on a continuous score.
Lower values are consistent with less inflammation which could occur with an inflammatory response.
|
21 days (from randomization to completion)
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Zhaoping Li, MD, VA Greater Los Angeles Healthcare System, West Los Angeles, CA
- Principal Investigator: Joseph Stephen Yusin, MD, VA Greater Los Angeles Healthcare System, West Los Angeles, CA
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
October 1, 2016
Primary Completion (Actual)
March 12, 2019
Study Completion (Actual)
March 12, 2019
Study Registration Dates
First Submitted
August 23, 2016
First Submitted That Met QC Criteria
August 25, 2016
First Posted (Estimate)
August 31, 2016
Study Record Updates
Last Update Posted (Actual)
June 19, 2020
Last Update Submitted That Met QC Criteria
May 26, 2020
Last Verified
May 1, 2020
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Infections
- Respiratory Tract Infections
- Respiratory Tract Diseases
- Immune System Diseases
- Hypersensitivity, Immediate
- Otorhinolaryngologic Diseases
- Respiratory Hypersensitivity
- Hypersensitivity
- Nose Diseases
- Rhinitis
- Rhinitis, Allergic
- Physiological Effects of Drugs
- Autonomic Agents
- Peripheral Nervous System Agents
- Anti-Inflammatory Agents
- Dermatologic Agents
- Bronchodilator Agents
- Anti-Asthmatic Agents
- Respiratory System Agents
- Anti-Allergic Agents
- Fluticasone
Other Study ID Numbers
- CLNB-03-15F
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
No
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
product manufactured in and exported from the U.S.
No
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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