A Study of Oxidative Stress Parameters in Anti-Helicobacter Pylorus Immunoglobulin G Positive and Negative Gastric Cancer Patients

다국어 초록 (Multilingual Abstract)

Purpose: Helicobacter pylorus (HP) is a Gram-negative spiral-shaped microaerophilic bacterium, which colonizes
in the gastric mucosa of humans. The gastric human pathogen HP causes chronic gastritis and ulcers, and has a
strong relationship with gastric cancer. The aim of this study was to determine advanced oxidation protein products
(AOPP) levels, activities of myeloperoxidase (MPO) and catalase (CAT) in two groups. Materials and Methods:
For this aim, one group included 30 patients with gastric cancer (Group 1) and the other included 30 subjects with
non-gastric cancer and Anti-HP immunoglobulin (Ig) G antibody positive (group 2). Anti-HP IgG antibody test
values were found as positive in fifty percent of group 1 and all of the group 2 patients. Results: Significantly
increased AOOP levels were found in group 1 (p < 0.05) compared to group 2. There were no significant
differences between the groups in regard to activities of MPO and CAT. In addition, AOPP level, MPO and CAT
activities were similar among the Anti-HP IgG positive and negative subgroups of group 1 patients. Conclusion:
The result of this study indicated that gastric cancer patients were characterized by increased protein oxidation,
whereas there was no significant difference in oxidative stress parameters and antioxidant enzyme activity between
the Anti-HP IgG positive and negative gastric cancer patients.

다국어 초록 (Multilingual Abstract)

Purpose: Helicobacter pylorus (HP) is a Gram-negative spiral-shaped microaerophilic bacterium, which colonizes
in the gastric mucosa of humans. The gastric human pathogen HP causes chronic gastritis and ulcers, and has a
strong relationship with gastric cancer. The aim of this study was to determine advanced oxidation protein products
(AOPP) levels, activities of myeloperoxidase (MPO) and catalase (CAT) in two groups. Materials and Methods:
For this aim, one group included 30 patients with gastric cancer (Group 1) and the other included 30 subjects with
non-gastric cancer and Anti-HP immunoglobulin (Ig) G antibody positive (group 2). Anti-HP IgG antibody test
values were found as positive in fifty percent of group 1 and all of the group 2 patients. Results: Significantly
increased AOOP levels were found in group 1 (p < 0.05) compared to group 2. There were no significant
differences between the groups in regard to activities of MPO and CAT. In addition, AOPP level, MPO and CAT
activities were similar among the Anti-HP IgG positive and negative subgroups of group 1 patients. Conclusion:
The result of this study indicated that gastric cancer patients were characterized by increased protein oxidation,
whereas there was no significant difference in oxidative stress parameters and antioxidant enzyme activity between
the Anti-HP IgG positive and negative gastric cancer patients.

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