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

October 5, 2012 updated by: David B. Peden, MD, University of North Carolina, Chapel Hill
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.

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

4

Phase

  • Phase 1

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

  • United States
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27599
        • UNC Center for Environmental Medicine, Asthma and Lung Biology

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 to 50 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

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

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: Basic Science
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Increased sputum neutrophils with no adverse events
Time Frame: 6 hours post challenge
6 hours post challenge

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of North Carolina, Chapel Hill

Collaborators

National Institutes of Health (NIH)

Investigators

  • Principal Investigator: David b Peden, MD, MS, University of North Carolina

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

May 1, 2008

Primary Completion (Actual)

May 1, 2012

Study Completion (Actual)

May 1, 2012

Study Registration Dates

First Submitted

February 28, 2008

First Submitted That Met QC Criteria

March 6, 2008

First Posted (Estimate)

March 7, 2008

Study Record Updates

Last Update Posted (Estimate)

October 8, 2012

Last Update Submitted That Met QC Criteria

October 5, 2012

Last Verified

October 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 07-2026 GCRC 2627

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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