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Updated: Mar 27, 2026
Protocols for Analyzing the Role of Paneth Cells in Regenerating the Murine Intestine using Conditional Cre-lox Mouse Models
Published on: November 21, 2015
[Metaplasic Paneth cells in ulcerative colitis]
Background:
Paneth cells are normally present in small intestine, but its appearance in other areas of the gastrointestinal tract is related to chronic inflammatory processes.
Material And Methods:
In our study we retrospectively examined 29 patients with diagnosis of ulcerative colitis, from the files of Instituto de Histopatología de Rosario, and from the casuistry of two authors (O.B. and P.S.M.), during two years. Biopsies corresponded to rectal or sigmoid mucosa and were stained with H.E.
Results:
Distal Paneth cells in rectum and/or sigmoid colon were found in 60% of patients. This finding was related to the time of evolution of the disease (median 7 years for patients with Paneth cells and 3 years for patients without Paneth cells). With more time of evolution, there were more number of affected crypts and more number of Paneth cells. Some of the patients with longer evolution had 2-5 crypts with Paneth cells (up to 11 Paneth cells). When the time of evolution of the disease was longer, we found an irregular distribution of Paneth cells, with migration from the depth of the crypt to highest crypt levels. There was a relationship between the number of Paneth cells and the degree of leukocyte infiltration of the mucosa.
Conclusions:
We observed a direct correlation of the presence of Paneth cells with the time of evolution of the disease and with the leukocyte infiltration of the mucosa.
Insights
Paneth cells in the rectum and sigmoid colon were found in 60% of ulcerative colitis patients. Their presence correlated with longer disease duration and increased leukocyte infiltration, indicating chronic inflammation.
Area of Science:
- Gastroenterology
- Histopathology
Context:
- Paneth cells are specialized epithelial cells normally found in the small intestine.
- Their presence in the distal gastrointestinal tract, such as the rectum and sigmoid colon, is atypical and associated with chronic inflammatory conditions.
Purpose:
- To investigate the prevalence and characteristics of Paneth cells in the rectal and sigmoid mucosa of patients with ulcerative colitis.
- To determine the relationship between Paneth cell presence and disease duration, severity, and inflammatory markers.
Summary:
- A retrospective study of 29 ulcerative colitis patients revealed Paneth cells in the distal colon in 60% of cases.
- The presence and number of Paneth cells directly correlated with the duration of ulcerative colitis, with more affected crypts and cells observed in patients with longer disease evolution (median 7 years vs. 3 years).
- Paneth cell distribution became irregular with longer disease duration, migrating from crypt bases to higher levels, and was associated with increased leukocyte infiltration of the mucosa.
Impact:
- This study highlights Paneth cell metaplasia as a potential indicator of chronic inflammation in ulcerative colitis.
- Findings suggest that Paneth cell presence and distribution patterns may reflect disease chronicity and severity.
- Understanding these histological changes can aid in the diagnosis and management of chronic inflammatory bowel diseases.
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