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Safety Study of 20,000 EU of Clinical Center Reference Endotoxin in Allergic Adults With and Without Mild Asthma

This study has been terminated.
(Data collected under different protocol; funding exhuasted)
Sponsor:
ClinicalTrials.gov Identifier:
NCT00630461
First Posted: March 7, 2008
Last Update Posted: October 8, 2012
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Collaborator:
National Institutes of Health (NIH)
Information provided by (Responsible Party):
David B. Peden, MD, University of North Carolina, Chapel Hill
  Purpose
Endotoxin is a component of outdoor air pollution, an air contaminant found in a number of different workplaces, and is even found in homes. The endotoxin used for this study is obtained from the National Institutes of Health, and is called "Clinical Center Reference Endotoxin", or CCRE. The purpose of this Phase 1 research study is to identify a dose of inhaled endotoxin that is safe (does not cause prolonged cough, shortness of breath or other problems), but causes changes in your sputum cell samples that the scientists can measure. Phase 1 research studies like this one are not intended to be a treatment, but are a scientific investigation. Eventually, with these types of studies we will be able to examine why some people are more sensitive to endotoxin. Scientists at other universities have found that while most people do not have a considerable lung response to endotoxin at doses as high as 60,000 EU (endotoxin units), a few respond to as little as a total dose of 4500 EU. Our study is designed to identify if using a dose of 20,000 EU causes changes in the lung cells but does not cause symptoms in our study subjects. In our previous studies in our lab, using an endotoxin from another source, we have used higher doses (15,000 EUs) in subjects with asthma with no major problems, and we have used 10,000 EUs of CCRE in subjects with allergies and asthma without problems. We have used 20,000 EUs of CCRE in healthy individuals with no major problems.

Condition Intervention Phase
Mild Allergic Rhinitis Mild Allergic Rhinitis With Mild Asthma Biological: Clinical Center Reference Endotoxin Phase 1

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: Safety Study of 20,000 EU of Clinical Center Reference Endotoxin in Allergic Adults With and Without Mild Asthma

Further study details as provided by David B. Peden, MD, University of North Carolina, Chapel Hill:

Primary Outcome Measures:
  • Increased sputum neutrophils with no adverse events [ Time Frame: 6 hours post challenge ]

Enrollment: 4
Study Start Date: May 2008
Study Completion Date: May 2012
Primary Completion Date: May 2012 (Final data collection date for primary outcome measure)
Intervention Details:
    Biological: Clinical Center Reference Endotoxin
    single inhalation challenge
  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Mild allergic rhinitis
  • Mild allergic asthma
  • Normal lung function
  • No other chronic illness

Exclusion Criteria:

  • Use of inhaled or oral steroids
  • Emergency treatment of asthma in last year
  • Inhaled tobacco use
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00630461


Locations
United States, North Carolina
UNC Center for Environmental Medicine, Asthma and Lung Biology
Chapel Hill, North Carolina, United States, 27599
Sponsors and Collaborators
University of North Carolina, Chapel Hill
National Institutes of Health (NIH)
Investigators
Principal Investigator: David b Peden, MD, MS University of North Carolina
  More Information

Responsible Party: David B. Peden, MD, Professor of Pediatrics, University of North Carolina, Chapel Hill
ClinicalTrials.gov Identifier: NCT00630461     History of Changes
Other Study ID Numbers: 07-2026 GCRC 2627
First Submitted: February 28, 2008
First Posted: March 7, 2008
Last Update Posted: October 8, 2012
Last Verified: October 2012

Keywords provided by David B. Peden, MD, University of North Carolina, Chapel Hill:
mild asthma, mild allergies

Additional relevant MeSH terms:
Asthma
Rhinitis
Rhinitis, Allergic
Bronchial Diseases
Respiratory Tract Diseases
Lung Diseases, Obstructive
Lung Diseases
Respiratory Hypersensitivity
Hypersensitivity, Immediate
Hypersensitivity
Immune System Diseases
Nose Diseases
Respiratory Tract Infections
Otorhinolaryngologic Diseases