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Isolation and Flow Cytometric Characterization of Murine Small Intestinal Lymphocytes
08:14

Isolation and Flow Cytometric Characterization of Murine Small Intestinal Lymphocytes

Published on: May 8, 2016

[Lymphoid follicles of the human large bowel mucosa: structure and function]

J O Gebbers1, I Kennel, J A Laissue

  • 1Pathologisches Institut, Kantonsspital Luzern, Schweiz.

Verhandlungen Der Deutschen Gesellschaft Fur Pathologie
|January 1, 1992
PubMed

Insights

Human solitary lymphoid follicles (LF) are key gut-associated lymphoid tissues. This study reveals their distinct structure and function, similar to Peyer patches, highlighting immune cell compartmentalization in the gut mucosa.

Area of Science:

  • Immunology
  • Gastroenterology
  • Histology

Context:

  • Solitary lymphoid follicles (LF) are integral components of gut-associated lymphoid tissue (GALT).
  • Their specific morphology and function in human colorectal tissue remain largely uncharacterized.
  • Understanding LF is crucial for comprehending mucosal immunity.

Purpose:

  • To investigate the in situ morphology and immunomorphology of human solitary lymphoid follicles (LF).
  • To compare the cellular composition and structure of LF with the lamina propria.
  • To elucidate the functional role of LF within the gut immune system.

Summary:

  • Examined 156 solitary lymphoid follicles (LF) in human colorectal resection specimens using immunohistochemistry.
  • Identified two distinct LF types in the colon and rectum, both featuring a defined structure including follicle-associated epithelium (FAE), dome regions, and lymphocyte areas.
  • Found significant differences in immune effector cell populations between LF and lamina propria, suggesting distinct functional roles.

Impact:

  • Reveals striking compartmentalization of immune cells within the gut mucosa.
  • Demonstrates a strong similarity between LF and Peyer patches in immunomorphology and function.
  • Suggests LF act as the afferent limb of the gut's local immune system, distinct from the efferent role of lamina propria cells.

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