Mechanisms of Exacerbation of Asthma (MECA)

University of California San Francisco (UCSF)

Status: Suspended

Conditions: Asthma

Study type: Observational

Funder types: Other; NIH

Identifiers

NCT00594750

10-01329

5R01HL080414-08 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

The purpose of this study is to identify the causes of asthma that were not previously suspected, to better understand the effects of inhaled steroids on asthma and to identify new way to treat asthma.

Full description

In this study, we will explore mechanisms of exacerbation in asthma by careful characterization studies in asthmatics presenting in acute severe exacerbation. Specifically, we will determine the frequency of secretor status in these subjects by blood and saliva testing, and we will also perform a detailed cellular and biochemical analysis of their airway secretions. We will collect airway secretions using two methods. One method will be to have subjects cough sputum into a clean plastic container. The other method only applies to asthmatics with near-fatal asthma requiring intubation and mechanical ventilation. In these asthmatics, we will collect airway secretions by tracheal aspirate using methods normally applied in their clinical care.

Enrollment: 115 estimated patients

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Male and female subjects with a history of asthma between the ages of 18 to 75 years.
2. Physician diagnosis of asthma.
3. Currently experiencing an acute exacerbation of asthma. This exacerbation may be severe necessitating treatment in the emergency room, ICU, or hospital ward.
4. Ability to provide informed consent.

Exclusion criteria

1. Lung disease other than asthma.
2. Females who are lactating or who are pregnant.
3. Use of recreational drugs in the 1 month preceding the study.

Trial design

115 participants in 1 patient group

Asthma

Description:

People who have been diagnosed with Asthma