title: Helicobacter pylori infection in early and advanced gastric adenocarcinoma: a seroprevalence study in 143 Taiwanese patients.
abstract: The association between gastric adenocarcinoma and Helicobacter pylori infection remains controversial. A seroprevalence study of Helicobacter pylori infection in 143 patients with gastric adenocarcinoma and a control group of 823 subjects randomly selected from four areas in Taiwan, was carried out to elucidate the association. The overall seropositivity of Helicobacter pylori in gastric adenocarcinoma patients (62.9%) was higher than in controls (54.4%), but the difference was not statistically significant (p > 0.05). The seropositivity of early gastric adenocarcinoma (61.5%) was not significantly different from that of advanced gastric adenocarcinoma (63.2%). Various demographic factors such as sex, blood type, cigarette smoking, tumor histology and location were not associated with the seroprevalence of Helicobacter pylori. The age-specific seroprevalence of Helicobacter pylori tended to be higher in younger patients and decreased after the age of 60 years in gastric adenocarcinoma, in contrast to a stepwise increase of seropositivity in controls. This suggests that Helicobacter pylori infection in early life may be a contributory factor in gastric carcinogenesis.
authors.affiliation: Department of Internal Medicine, National Taiwan University College of Medicine, Taipei.
authors.forename: J T
authors.initials: JT
authors.lastname: Lin
authors.forename: J T
authors.initials: JT
authors.lastname: Wang
authors.forename: T H
authors.initials: TH
authors.lastname: Wang
authors.forename: M S
authors.initials: MS
authors.lastname: Wu
authors.forename: C J
authors.initials: CJ
authors.lastname: Chen
mesh_terms: D000230:Adenocarcinoma / Q000150:complications* / Q000453:epidemiology / Q000382:microbiology; D005260:Female; D016481:Helicobacter Infections / Q000150:complications* / Q000453:epidemiology; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D016036:Seroepidemiologic Studies; D013274:Stomach Neoplasms / Q000150:complications* / Q000453:epidemiology / Q000382:microbiology; D013624:Taiwan