Increased Mast Cell Counts and Degranulation in Microscopic Colitis
Joint Authors
Chi, Zhikai
Xu, Jing
Saxena, Romil
Source
Gastroenterology Research and Practice
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-04
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Objectives.
Microscopic colitis (MC) is characterized by chronic diarrhea, normal colonoscopy findings, and mucosal inflammation in colonic biopsies and can be classified as collagenous colitis (CC) or lymphocytic colitis (LC).
However, the pathogenesis of MC is largely unknown.
In this study, we aimed to study mast cell counts and activation in MC.
Methods.
We investigated 64 biopsy samples from the surgical pathology database of Indiana University Health, which met the diagnostic criteria for CC or LC along with 20 control samples collected from 2014 to 2015.
The specimens were used for the quantification of mast cells by examining the presence of intracellular and extracellular tryptase by immunohistochemistry.
Results.
In the lamina propria, the mast cell count was higher in both CC and LC groups than the control (mean highest count, 39/high-power field (HPF) vs.
30/HPF vs.
23/HPF; P<0.01).
Extracellular tryptase was present in 10% of control subjects as compared to 41% of CC (P<0.05) and 60% of LC (P<0.001) patients.
When LC patients were stratified into two groups with either <80% or >80% of fragments affected by inflammation, increased mast cell counts are only observed in the >80% involvement group compared with the control, but not the <80% involvement group.
Conclusions.
The increased mast cell count and degranulation are identified in MC, suggesting that mast cell activation might be involved in the pathogenesis of MC.
American Psychological Association (APA)
Chi, Zhikai& Xu, Jing& Saxena, Romil. 2020. Increased Mast Cell Counts and Degranulation in Microscopic Colitis. Gastroenterology Research and Practice،Vol. 2020, no. 2020, pp.1-6.
https://search.emarefa.net/detail/BIM-1167136
Modern Language Association (MLA)
Chi, Zhikai…[et al.]. Increased Mast Cell Counts and Degranulation in Microscopic Colitis. Gastroenterology Research and Practice No. 2020 (2020), pp.1-6.
https://search.emarefa.net/detail/BIM-1167136
American Medical Association (AMA)
Chi, Zhikai& Xu, Jing& Saxena, Romil. Increased Mast Cell Counts and Degranulation in Microscopic Colitis. Gastroenterology Research and Practice. 2020. Vol. 2020, no. 2020, pp.1-6.
https://search.emarefa.net/detail/BIM-1167136
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1167136