RESUMEN
OBJECTIVE: to assess expression of p27 and survivin in chronic gastritis with/without H. pylori ± intestinal metaplasia (IM) and in intestinal-type gastric cancer (IGC). MATERIALS AND METHODS: Immunohistochemical staining for p27 and survivin on paraffin-embedded sections of 20 chronic gastritis, 20 H. pylori gastritis, 15 H. pylori gastritis with IM, 50 IGC, and 10 controls. Positivity (number of positive cases) and expression (mean percentage of positive gastric cells) for both proteins were evaluated. RESULTS: P27 positivity and expression decreased from control to chronic gastritis to H. pylori gastritis to H. pylori gastritis with IM. In IGC, p27 positivity and expression were lower than controls and chronic gastritis but higher than H. pylori gastritis ±IM. High grade and advanced stage IGCs have insignificantly lower p27 positivity and expression than low grade and early stage IGCs. By contrast, survivin positivity and expression increased from chronic gastritis to H. pylori gastritis to H. pylori gastritis with IM to IGCs. High grade and advanced stage IGCs have significantly higher survivin positivity and expression than low grade and early stage IGCs. Males have higher positivity and expression for p27 and survivin than females. CONCLUSION: Inverse relation between p27 and survivin in H. pylori gastritis, H. pylori gastritis with IM and IGCs lesions, suggesting that both proteins could be used as potential prognostic and/or diagnostic biomarkers in H. pylori and IM associated- gastritis as well as in IGC.
