Abstract
The present study was carried out to assess the predictive value and expression of the proliferative activity of Ki-67 and the expression of p53 protein in Helicobacter pylori associated chronic gastritis. This study comprised archival blocks from 20 dyspeptic patients who at National Hepatology and Tropical Medicine Research Institute underwent a diagnostic oesophago-gastroduodenoscopy with multiple gastric antral endoscopic biopsies for histological examination. The blocks were cut at 5 nM thicknesses, stained by hematoxylin and eosin to score the inflammatory grade and subjected to Giemsa stain to assess H. pylori infection, and then immune–histochemical method was done to determine protein P53 and Ki-67. The obtained results indicated that there was no significant association between the expression of Ki67 and P53 in the studied cases. There was no significant association between Ki67 and P53 in the presence of intestinal atrophy, intestinal metaplasia, intestinal activity and intestinal inflammation. While, there was significant association between Ki67 and P53 in intestinal dysplasia, P = 0.015, 0.025, respectively. It could be concluded that the significant association of the proliferative marker Ki-67 and apoptotic marker p53 protein with intestinal dysplasia may be one of the main predictive values in the development of gastric carcinoma in patients with gastritis secondary to H. pylori infection.
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