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The Role of Gastric Content Microaspirations in the Pathogenesis of Idiopathic Pulmonary Fibrosis

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified October 2012 by Sheba Medical Center.
Recruitment status was:  Not yet recruiting
Information provided by (Responsible Party):
Sheba Medical Center Identifier:
First received: October 23, 2012
Last updated: October 25, 2012
Last verified: October 2012
The pathogenesis of idiopathic pulmonary fibrosis (IPF) is debatable. Looking for an insult to lung parenchyma that generates the pathogenesis of the disease is challenging. Pepsin is a proteolytic enzyme present in the gastric juice. Microaspirations of gastric content were described as a potential factor for injury in many chronic lung disorders. Bronchoalveolar lavage (BAL) is a routine investigation technique in interstitial lung diseases. The presence of pepsin in the BAL fluid recovered from patients with IPF may indicate a possible role for gastric microaspirations in the pathogenesis of the disease.


Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Study of Pepsin Levels in the Broncho-Alveolar-Lavage Fluid of Patients With Idiopathic Pulmonary Fibrosis

Resource links provided by NLM:

Further study details as provided by Sheba Medical Center:

Primary Outcome Measures:
  • BAL Pepsin level [ Time Frame: 18 MONTHS ]

Biospecimen Description:
BAL broncho alveolar lavage at bronchoscopy

Estimated Enrollment: 40
Study Start Date: January 2013
Estimated Study Completion Date: December 2014
Estimated Primary Completion Date: June 2014 (Final data collection date for primary outcome measure)
IPF patients diagnosed according to clinical and radiological findings
Other interstitial lung diseases such as sarcoidosis or hypersensitivity pneumonitis diagnosed as per clinical and radiological findings


Ages Eligible for Study:   18 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with IPF versus patients with other interstitial lung disorders (non IPF)

Inclusion Criteria:

  • patients with interstitial lung disorders including IPF

Exclusion Criteria:

  • patients younger than 18 years or older than 85,
  • pregnant women,
  • patients that present with medical conditions contra -indicated for performing bronchoscopy including sedation
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Please refer to this study by its identifier: NCT01714934

Sheba Medical Center
Ramat Gan, Israel, 52621
Sponsors and Collaborators
Sheba Medical Center
  More Information

Responsible Party: Sheba Medical Center Identifier: NCT01714934     History of Changes
Other Study ID Numbers: SHEBA-12-9440-TS-CTIL
Study First Received: October 23, 2012
Last Updated: October 25, 2012

Keywords provided by Sheba Medical Center:

Additional relevant MeSH terms:
Pulmonary Fibrosis
Idiopathic Pulmonary Fibrosis
Idiopathic Interstitial Pneumonias
Pathologic Processes
Lung Diseases
Respiratory Tract Diseases
Lung Diseases, Interstitial processed this record on August 18, 2017