Abstract: Objective To analyze the correlation between helicobacter pylori antibody, pepsinogen, gastrin-17 and the clinical stage of gastric cancer. Methods The clinical data of 120 patients with gastric cancer treated in our hospital from April 2015 to April 2017 were retrospectively analyzed. 70 gastritis patients were used as controls to compare the positive rate of serum helicobacter pylori antibody, pepsinogen level and gastrin-17 level in patients with gastric cancer at different clinical stages. Spearman correlation was used to analyze the correlation between the above factors and gastric cancer. Results The positive rate of helicobacter pylori antibody in patients with gastric cancer was higher than that in the control group(P<0.05), and the positive rate of helicobacter pylori antibody in patients with stage Ⅰ, Ⅱ, Ⅲ and Ⅳ increased gradually. The levels of serum pepsinogen Ⅱ, gastrin-17 in patients with gastric cancer were higher than those in the control group, and the levels of pepsinogen Ⅰ were lower than those in the control group(P< 0.05). The levels of serum pepsinogen Ⅱ and gastrin-17 in patients with stage Ⅰ, Ⅱ, Ⅲ and Ⅳ increased gradually, and the levels of pepsinogen I decreased gradually. In the multiple linear regression analysis with clinical stage of gastric cancer, the regression coefficients of helicobacter pylori antibody, pepsinogen Ⅱ and gastrin-17 were 0.396, 0.059 and 0.047, respectively, the regression coefficient of pepsinogen I was -0.040.Conclusion Helicobacter pylori antibody, pepsinogen and gastrin-17 are closely related to the clinical stage of gastric cancer.

Key words: helicobacter pylori antibody, pepsinogen, gastrin-17, gastric cancer

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