Role of Esophageal Mast Cell Activation in Noncardiac Chest Pain (NCCP)
The recruitment status of this study is unknown because the information has not been verified recently.
Verified September 2005 by Penn State University.
Recruitment status was Recruiting
Information provided by:
Penn State University
First received: September 16, 2005
Last updated: NA
Last verified: September 2005
History: No changes posted
Chest pain is a common clinical complaint. About 30% patients with chest pain will have a normal coronary angiogram and are described as having noncardiac chest pain (NCCP). It is estimated that 25% of the population complain of chest pain at some time in their lifetime. The pathogenesis of NCCP is unknown. Esophageal hypersensitivity as a result of inflammation is considered to be an important mechanism in the development of this pain sensation. Little is currently known about the interaction between inflammatory mediators and peripheral afferent nerve terminals in the esophagus. The mast cell is one of the most enriched pro-inflammatory cells in the gastrointestinal tract. Activation of the mucosal mast cell releases a variety of mediators into adjacent tissues. We hypothesize that mediators released by mast cells sensitize esophageal nociceptors and induce pain sensation.
Noncardiac Chest Pain (NCCP)
||Observational Model: Defined Population
Primary Purpose: Screening
Time Perspective: Longitudinal
||Role of Esophageal Mast Cell Activation in Noncardiac Chest Pain (NCCP)
| Estimated Enrollment:
| Study Start Date:
| Estimated Study Completion Date:
- Key Objectives: To determine the density and activation of esophageal mast cells in non-cardiac chest pain patients. We expect to find mast cell activation, as measured by mast cell count or degranluation, tryptase staining, and histamine release, will be greater in NCCP patients compared to controls, and the increased mast cell activation will correlate with the severity of NCCP. These results will expand our understanding of the pathogenesis of esophageal originated NCCP, and allow the development of new diagnostic and treatment options.
- Study Population: (i) NCCP (ii) Reflux esophagitis (iii) Control subjects.
- Summary of Procedures: (i) symptom assessment by chest pain questionnaire; (ii) esophageal reflux evaluation by review of records of 24-hour pH monitoring; (iii) evidence of esophagitis by endoscopy; (iv) esophageal biopsy by endoscopy; (v) mast cell activation study in biopsy specimen by mast cell count, tryptase and Transient receptor potential vanniloid-1 (TRPV1) staining, and histamine release assay.
- Major Risks & Discomforts: There are no major risks & discomforts other than involved in standard upper GI endoscopy.
|Ages Eligible for Study:
||18 Years to 70 Years
|Genders Eligible for Study:
|Accepts Healthy Volunteers:
- NCCP – presence of a history of chest pain with a negative cardiac evaluation, no evidence of gross esophagitis on endoscopy, and lack of any exclusion criteria; Reflux esophagitis – presence of chest pain or heartburn, negative cardiac evaluation, lack of exclusion criteria and presence of esophagitis on endoscopy;
- Controls – lack of history of chest pain, lack of exclusion criteria and lack of esophagitis on endoscopy. It is anticipated that patients being evaluated for heme positive stool or GI bleeding would be included as controls.
- History of ischemic heart disease, history of asthma, significant food allergies, celiac disease, chronic inflammatory conditions (SLE, rheumatoid arthritis), atopic skin disease, varices, coagulopathy, recent drug treatment with steroids.
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00219492
|Penn State College of Medicine Hershey Medical Center
|Hershey, Pennsylvania, United States, 17033 |
|Contact: Kathyrn Kaylor 717-531-4466 email@example.com |
|Principal Investigator: Shaoyong Yu, MD, MPH |
|Sub-Investigator: Ann Ouyang, MD |
Penn State University
||Shaoyong Yu, MD, MPH
||Department of Medicine, Penn State College of Medicine Hershey Medical Center
||Ann Ouyang, MD
||Penn State College of Medicine Hershey Medical Center
No publications provided
History of Changes
|Other Study ID Numbers:
|Study First Received:
||September 16, 2005
||September 16, 2005
||United States: Institutional Review Board
Keywords provided by Penn State University:
NCCP, mast cell, esophagus
Additional relevant MeSH terms:
ClinicalTrials.gov processed this record on September 01, 2015
Signs and Symptoms