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Chronic Obstructive Pulmonary Disease (COPD) and Domestic Endotoxin (CODE) (CODE)

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: NCT00890136
Recruitment Status : Completed
First Posted : April 29, 2009
Last Update Posted : June 25, 2019
National Institute of Environmental Health Sciences (NIEHS)
Information provided by (Responsible Party):
Johns Hopkins University

Brief Summary:
This project aims to characterize the independent effect of domestic endotoxin exposure on health status, as well as pulmonary and systemic inflammation, in former smokers with COPD. Positive findings from this study would be clinically relevant, as they would provide evidence to support aggressive reduction of ongoing endotoxin exposure in patients with COPD. The investigators also hope to make a methodological advance in the field of endotoxin exposure assessment by elucidating whether settled dust and/or airborne endotoxin measurements are the more relevant exposure of interest in epidemiological studies of respiratory disease. To fulfill the specific aims, the investigators will conduct a longitudinal study, including 75 former smokers with COPD. All subjects will have indoor air monitoring, in-home settled dust collections, home inspections as well as assessments of health status, quality of life (QOL), lung function and pulmonary and systemic inflammation.

Condition or disease
Chronic Obstructive Pulmonary Disease

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Study Type : Observational
Actual Enrollment : 84 participants
Observational Model: Case-Only
Time Perspective: Prospective
Official Title: COpd and Domestic Endotoxin (CODE)
Actual Study Start Date : July 2008
Actual Primary Completion Date : March 2014
Actual Study Completion Date : November 2014

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. statistical analysis [ Time Frame: one year ]

Biospecimen Retention:   Samples Without DNA
blood, sputum

Information from the National Library of Medicine

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Ages Eligible for Study:   40 Years to 100 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Both Male and Female 40 years and older

Inclusion Criteria:

  • Patient reported physician diagnosis of COPD/Chronic Bronchitis/Emphysema
  • Cigarette Smoking > 10 pack-years
  • Age > 40 years
  • Has not smoked > 1 year
  • Post BD FEV1/FVC ≤ 70%
  • Post BD FEV1 (% predicted) 30-80%
  • Ability and willingness to provide consent

Exclusion Criteria:

  • Non- English speaking
  • Planning to move or live away from the home during the study period
  • Co-morbid illnesses such as:

    • Current physician diagnosis of Asthma
    • Other pulmonary diseases
    • Systemic disease requiring treatment with immunosuppressive agents
    • Known alpha-1 antitrypsin deficiency
    • Occupational exposure with high endotoxin exposure
  • Within the last 6 months Use of oral corticosteroids

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): NCT00890136

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United States, Maryland
Karina Romero
Baltimore, Maryland, United States, 21231
Sponsors and Collaborators
Johns Hopkins University
National Institute of Environmental Health Sciences (NIEHS)
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Principal Investigator: Nadia Hansel, MD, MPH Johns Hopkins University
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Responsible Party: Johns Hopkins University Identifier: NCT00890136    
Other Study ID Numbers: NA_00017777
First Posted: April 29, 2009    Key Record Dates
Last Update Posted: June 25, 2019
Last Verified: June 2019
Keywords provided by Johns Hopkins University:
Chronic Obstructive Pulmonary Disease (COPD)
Additional relevant MeSH terms:
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Lung Diseases
Lung Diseases, Obstructive
Pulmonary Disease, Chronic Obstructive
Respiratory Tract Diseases