Abstract
BackgroundPathological alteration in gastric mucosa is caused by Helicobacter pylori infection and is detectable by histological analysis. In particular, the alteration of gland mucous cells (GMCs)-type mucin, which plays a protective role against H. pylori infection, is critical in the pathogenesis of H. pylori-related gastritis. We established an assay for GMCs-type mucin and quantitatively assessed the pathophysiological changes in its content in human gastric juice samples. MethodsThe assay method for GMCs-type mucin was based on ELISA using a monoclonal antibody (HIK1083), and was used it to measure GMCs-type mucin in gastric juice obtained from patients with or without H. pylori infection. ResultsAll the basic characteristics of the current method were satisfactory to quantify the GMCs-type mucin content in gastric juice. The GMCs-type mucin content, but not total mucin content, was significantly higher in patients with H. pylori infection (n=17; 437±476 U, mean±SD) than in those without H. pylori infection (n=55; 168±322 U, p<0.05). ConclusionsThe current method is suitable for the quantitative analysis of GMCs-type mucin in gastric juice. The change in GMCs-type mucin content in gastric juice may be possibly implicated in the pathophysiology of the gastric mucosa and in the patient's gastric mucosal lesions.
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