Abstract
The effect of lipopolysaccharide from H. pylori, a bacteria implicated in the etiology of gastric disease, on the gastric mucosal laminin-receptor interaction was investigated. The receptor protein, prepared from rat gastric epithelial cell membrane by affinity chromatography on laminin-coupled Sepharose, was radioiodinated, and incorporated into liposomes which exhibited specific affinity towards laminin-coated surface. The binding was inhibited by H. pylori lipopolysaccharide, which caused a maximum inhibition of 96% at 50μg/ml. The inhibitory effect of the lipopolysaccharide was prevented by an antiulcer agent, ebrotidine that evoked essentially complete restoration in binding at 6-8μg/ml. The results demonstrate that H. pylori through its lipopolysaccharide interferes with gastric epithelial cell-laminin binding, and that this disruptive effect could be successfully countered by ebrotidine.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 131-138 |
| Number of pages | 8 |
| Journal | Biochemistry International |
| Volume | 27 |
| Issue number | 1 |
| State | Published - Jan 1 1992 |
All Science Journal Classification (ASJC) codes
- Biochemistry