Evaluation of Airway Gene Expression in COPD and Controlled Populations

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. Identifier: NCT00571792
Recruitment Status : Unknown
Verified December 2007 by University of Nebraska.
Recruitment status was:  Recruiting
First Posted : December 12, 2007
Last Update Posted : December 12, 2007
Wyeth is now a wholly owned subsidiary of Pfizer
Information provided by:
University of Nebraska

Brief Summary:
To explore potential proteins that may be used to develop novel therapies for COPD. This will be accomplished by acquiring material from the lower respiratory tract via endobronchial brushings.

Condition or disease

Detailed Description:

Chronic Obstructive Pulmonary Disease(COPD) is currently the fourth leading cause of death in the United States. COPD is characterized by reduced airflow that is largely irreversible and progressive. Smoking is recognized as the most important cause of COPD contributing up to 80% of the cases. The disease does demonstrate a significant variability in airflow obstruction during the progression of the disease among those who are diagnosed and treated. This is probably due not only to the role of exposure of cigarette smoke and other noxious inhaled particles and gases but also to the individual's varied responses to those exposures.

COPD is characterized by an inflammatory response that does have a number of components that may be present in variable amounts. Recent data suggests that the cigarette exposure may cause several distinct pathophysiological processes that in turn may account for the variability demonstrated in altered lung structure that leads to functional impairment. Current therapies can help with alleviation of symptoms in individuals but not the unaltered course of loss in lung function that frequently leads to respiratory failure and death.

New strategies have been discussed as a means to new therapeutic approaches to altering the course of the disease. The use of genomic and proteomic methodologies offer promise to identify the pathways critical and relevant to the progression of COPD. To date approved medications target only the inflammatory response to the disease.

The study will explore metabolic pathways that could affect the remodeling process associated with the disease. Because of the heterogeneity of COPD, characteristics of the individual as well as between individuals must be identified in more detail. Mechanisms that enable this not only include physiological characterization by the current prescribed interventions but also imaging data which provides such ability to quantify airway wall thickness as well as via DNA that will be collected and save in order to gain a better understanding between the methodologies as they relate to the characterization of COPD. Currently, there may be a common understanding of how a particular drug affects a detailed molecular mechanism, however frequently it is not known why. The purpose of this study is to assist in discovery of the why.

Study Type : Observational
Estimated Enrollment : 30 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Evaluation of Airway Gene Expression in COPD and Controlled Populations
Study Start Date : August 2006
Estimated Study Completion Date : September 2008

Resource links provided by the National Library of Medicine

Individuals with normal lung function who do not smoke
Individuals who smoke but who do not demonstrate symptoms of chronic obstructive pulmonary disease
Individuals who smoke that demonstrate symptoms of COPD

Biospecimen Retention:   Samples With DNA
Genetic testing involves identification of potential proteins and biomarkers produced from the DNA and RNA analysis. Included are MMP12 and MMP9, Nrf-2 gene, heme oxygenases, glutathione, sythesizing enzymes, thioredoxin reductase, NADPH dependent quinone reductase 1 as well as certain p450 members.

Information from the National Library of Medicine

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Ages Eligible for Study:   45 Years to 70 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Males or non-pregnant, non-nursing females who are of non-childbearing potential between the ages of 45 and 70 years of age and who may be either life long non smokers, smokers who do not demonstrate symptoms of COPD and smokers who do demonstrate symptoms of COPD

Inclusion Criteria:

  • Age 45-70 yrs of age, incl, women as described above as far as child-bearing potential and subjects who if they have coexisting disease, the disease is stable and does not place an untoward risk or result in compromise of data.
  • Non smokers will be lifelong and have not worked in a chronic dusty environment.
  • Smokers will require a minimum of 10 pkyr history and currently smoking at least a pack per day. The smokers without symptoms of COPD must demonstrate a pulmonary function with an FEV1 > 80%. The FEV1/FVC ratio may be less than .7 however they can not demonstrate symptoms of chronic bronchitis by medical history. Smokers with symptoms must demonstrate an FEV1 < 80% and FEV1/FVC <.7.

Exclusion Criteria:

  • Any female subject who is pregnant or breast-feeding or a female subject who is of child-bearing potential who is unwilling to sue two acceptable methods of birth control.
  • Any condition that would place the subject at risk for endobronchial brushings(such as bleeding diathesis) or subjects who are currently taking anticoagulants.
  • Any subject who has had an exacerbation of COPD within the last six months of screening or who has been hospitalized for any reason within the last three months.
  • Illicit substances indicated by positive urine drug screen.

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 identifier (NCT number): NCT00571792

United States, Nebraska
University of Nebraska Medical Center Recruiting
Omaha, Nebraska, United States, 68198-2465
Contact: Kim Matthews, RN, APRN    402-559-8915   
Contact: Stephen I Rennard, MD    402 559-7313   
Principal Investigator: Stephen I Rennard, MD         
Sponsors and Collaborators
University of Nebraska
Wyeth is now a wholly owned subsidiary of Pfizer
Principal Investigator: Stephen Rennard, MD University of Nebraska

Responsible Party: Stephen I. Rennard, MD, University of Nebraska Medical Center Identifier: NCT00571792     History of Changes
Other Study ID Numbers: 406-05
First Posted: December 12, 2007    Key Record Dates
Last Update Posted: December 12, 2007
Last Verified: December 2007

Keywords provided by University of Nebraska:
The cohort will be comprised of normal non-smoking individuals, those individuals
who smoke who do not exhibit symptoms of COPD and individuals who smoke who do demonstrate
symptoms of COPD