Abstract
Background
Thailand has the lowest incidence of gastric cancer in the world. Helicobacter pylori infection, a low serum pepsinogen I/II ratio, and interleukin (IL)-1β-511 polymorphisms are suspected to be risk factors for gastric cancer.
Methods
A total of 167 Thais, comprising 56 cancer patients and 111 volunteers without cancer, underwent an esophagogastroduodenoscopic examination and three fixed-point biopsies; a cancer tissue biopsy was also done, and blood samples were collected. The subjects without cancer were divided into normal subjects and chronic gastritis patients. IL-1β-511 polymorphisms were analyzed by polymerase chain reaction-restriction fragment length polymorphism, and the serum levels of pepsinogen I and II were determined by a radioimmunoassay. Helicobacter pylori IgG antibody and tissue pathology were tested in all groups.
Results
The pepsinogen I/II ratio was significantly lower in the gastric cancer group than in the normal and chronic gastritis groups [odds ratio (OR), 2.3; 95% confidence interval (CI), 1.10–4.80; P = 0.025]. Gastric cancer patients were positive for the H. pylori IgG antibody more frequently than negative (OR, 2.946; 95% CI, 1.4–6.39; P = 0.005). However, only 15 (27%) cancer patients were both positive for H. pylori IgG antibody and had low serum pepsinogen I/II. The C/C genotype was found more frequently in the gastric cancer group than in the group with a normal gastric mucosa (OR, 0.64; 95% CI, 0.50–0.81; P = 0.014).
Conclusions
A low serum pepsinogen I/II ratio combined with positivity for H. pylori IgG, and a IL-1β-511 C/C genotype may be independent risk factors for gastric cancer in Thais.
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Presented at the 19th World Congress of the International Society of Digestive Surgery, Pacifico Yokohama, Japan, December 8–11, 2004 (Helicobacter pylori Symposium)
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Yamada, S., Matsuhisa, T., Makonkawkeyoon, L. et al. Helicobacter pylori infection in combination with the serum pepsinogen I/II ratio and interleukin-1β-511 polymorphisms are independent risk factors for gastric cancer in Thais. J Gastroenterol 41, 1169–1177 (2006). https://doi.org/10.1007/s00535-006-1951-6
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DOI: https://doi.org/10.1007/s00535-006-1951-6