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01-11-2007 | Original Paper

Characterization of Esophageal Submucosal Glands in Pig Tissue and Cultures

Authors: Solange Abdulnour-Nakhoul, Nazih L. Nakhoul, Scott A. Wheeler, Salima Haque, Paul Wang, Karen Brown, Geraldine Orlando, Roy C. Orlando

Published in: Digestive Diseases and Sciences | Issue 11/2007

Abstract

The submucosal glands (SMGs) of the pig esophagus, like the human, secrete mucin and bicarbonate, which help in luminal acid clearance and epithelial protection. The aim of this study was to characterize histochemically the esophageal SMGs and a primary culture obtained from these glands. Tissues and cultures were stained with hematoxylin and eosin, periodic acid Schiff, Alcian blue, lectins, or cytokeratins. In the perfused esophagus, addition of carbachol increased mucin secretion by approximately 2-fold. The results indicate that [1] a method for culturing SMG cells was developed; [2] conventional staining indicates the presence of sulfated, acidic, and neutral mucopolysaccharides in glands and cultures; [3] lectin binding indicates the presence of N-acetyl glucosamine, N-acetyl neuraminic acid, N-acetyl galactosamine, and α-l-fucose in mucous cells and cultures; [4] cytokeratin and lectin staining indicated similarities with Barrett epithelium (columnar metaplasia of the esophagus); and [5] cholinergic agonists enhance mucin secretion and this could play a significant role in esophageal protection.

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Title: Characterization of Esophageal Submucosal Glands in Pig Tissue and Cultures
Authors: Solange Abdulnour-Nakhoul
Nazih L. Nakhoul
Scott A. Wheeler
Salima Haque
Paul Wang
Karen Brown
Geraldine Orlando
Roy C. Orlando
Publication date: 01-11-2007
Publisher: Springer US
Published in: Digestive Diseases and Sciences / Issue 11/2007
Print ISSN: 0163-2116
Electronic ISSN: 1573-2568
DOI: https://doi.org/10.1007/s10620-006-9739-3

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