Apoptotic Cell (AC) Uptake by Human Alveolar Macrophages (AM)

Status Completed

Clinical Trial Summary

The purpose of this study is to compare the ability of two types of white blood cells to eat dead host cells, and how this process affects their ability to protect the body from infection. The two cell types are monocytes, a cell in the bloodstream, and alveolar macrophages, a cell in the lung that is ultimately derived from monocytes

Clinical Trial Description

Volunteers, who may be Veterans or non-Veterans, will be screened by a series of questionnaires, chest X-ray, spirometry, EKG, blood work, and a complete history and physician examination by a study physician. Those who qualify for the study and agree via informed consent, will undergo a fiberoptic bronchoscopy on a separate day for the initial visit. Bronchoscopy is a procedure in which a flexible video instrument is passed via the nose or mouth, through the vocal cords and into the lungs. During the procedure, portions of the lungs will be washed ("lavaged") with a salt water solution, to collect the alveolar macrophages. This procedure involves conscious sedation, so that a driver is required on the day of the bronchoscopy. The entire procedure, including placement of an intravenous line to administer medications, local anesthetics, the bronchoscopy itself, and the recovery period, takes about 2.5-3 hours. The cells collected by bronchoscopy will be studied in the research laboratory, and used entirely in that procedure. ;

Study Design

Observational Model: Case-Only, Time Perspective: Prospective

Related Conditions & MeSH terms

Chronic Obstructive Pulmonary Disease
Lung Diseases, Obstructive
Pulmonary Disease, Chronic Obstructive

Clinical Trial Details

NCT number	NCT01099410
Study type	Observational
Source	VA Office of Research and Development
Contact
Status	Completed
Phase	N/A
Start date	February 2010
Completion date	December 2015

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