Detection of CagA in H. Pylori Gastric Illness Using in Situ Hybridization

Abstract

H. pylori had been recognized as the causative agent of several gastric diseases and possessed wide variety of virulence factors, one of most important factors is CagA. Objective: This study investigated the expression of CagA cytotoxin on the gastric epithelial cells in patients with Helicobacter pylori gastric illness by using In Situ Hybridization technique. Methods: Paraffin embedded tissue had been made form biopsies taken from 30 patients undergo O.G.D. and selected according to exclusion criteria. In addition 10 apparently healthy volunteers were included as a control group. Results: The CagA cytotoxin was detected in 21(70.0%) patients out of 30 and 9 (30.0%) gave negative results, on other hand control group showed no positive results. Conclusions: The CagA positive H. pylori strains cause the majority of H. pylori related gastric illness.