An in vitro model of gluten-sensitive enteropathy. Effect of gliadin on intestinal epithelial cells of patients with gluten-sensitive enteropathy in organ culture

The Journal of Clinical Investigation
Z M FalchukW Strober

Abstract

Jejunal biopsy specimens from patients with gluten-sensitive enteropathy (GSE) (obtained during gluten challenge) as well as from normal individuals and patients with other gastrointestinal abnormalities were cultured in vitro for 48 h in the presence or absence of a peptic-tryptic digest (P-T digest) of gliadin. In the absence of gliadin the alkaline phosphatase activity in the biopsy specimens obtained from normal control individuals increased from an initial value of 384 +/- 83 U to a 48 h value of 561 +/- 151 U (mean +/- SD) (difference significant at P < 0.01). The initial alkaline phosphatase activity of specimens obtained from patients with GSE was strikingly lower than that of normals, 117 +/- 79 U, and increased to a 48 h value of 399 +/- 203 U (difference significant at P < 0.01). The biochemical change in cultured biopsy specimens of GSE patients correlated with increases in the length and regularity of brush borders of epithelial cells as seen with the electron microscope. In the presence of a P-T digest of gliadin, the alkaline phosphatase activity of biopsy specimens of control individuals increased from an initial value of 384 +/- 83 U to a 48 h value of 578 +/- 156 U. In contrast, the alkaline phosphatase activi...Continue Reading

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