In order to evaluate the relationship between Helicobacter pylori (H. pylori) infection and dietary preference, a cross-sectional study was performed among 626 residents in a rural area of Japan. Seropositive rates were 88.7% in males and 71.4% in females, and these increased with age for both sexes [male P < 0.05 and female P < 0.01]. The relationship between H. pylori-seropositivities and sal...

BACKGROUND The aim of this investigation is to study the relationship between gastric morphology and serum biomarkers before and after Helicobacter pylori eradication. METHODS First-degree relatives of gastric cancer patients underwent gastroscopy before and 2.5 years after H. pylori eradication. The morphological changes in two categories (normal to mild and moderate to severe) were compared...

BACKGROUND Although several studies have investigated the association between ABO blood type and risk of gastric cancer (GC), atrophic gastritis (AG), and Helicobacter pylori (HP) infection, no study has investigated these associations by using ABO genotype. METHODS We conducted a case-control study in 703 patients with GC and 1,465 noncancer patients. We also conducted a cross-sectional stud...

Objective CYP2C19 metabolic activity influences the efficacy of Helicobacter pylori eradication therapies comprising PPIs. Rabeprazole (RPZ) and esomeprazole (EPZ) are PPIs not extensively metabolized by CYP2C19. The aim of this study was to elucidate whether or not first-line triple therapies using RPZ or EPZ are equally effective in Japanese patients with different CYP2C19 genotypes. Methods ...

Haemonchus parasites are responsible for many losses in animal production. However, few studies are available, especially of zebu cattle. In this study, we investigated mRNA differences of immune response genes in naïve Nellore calves infected with Haemonchus placei, relating these differences to patterns of cellular infiltrate. Calves were infected with 15,000 H. placei L3 larvae and after 7 d...

BACKGROUND/AIMS Synchronous/metachronous gastric epithelial neoplasias (GENs) in the remaining lesion can develop at sites other than the site of endoscopic resection. In the present study, we aimed to investigate the predictive value of serum pepsinogen for detecting multiple GENs in patients who underwent endoscopic resection. METHODS In total, 228 patients with GEN who underwent endoscopic...

CONTENTS INTRODUCTION . SECRETION . A C I D SECRETION: PHYSIOLOGICAL ASPECTS . A C I D S E C R E T I O N : N U T R I T I O N A L ASPECTS . The neonate . Meal p H . Distension and meal size . Particle size . . Meal size and frequency . Dietary proteins, peptides and amino acids . . Dietary carbohydrates . . Dietary fats . Beverages . Stimulatory eflects of whole foods. . BICARBONATE SECRETION . ...

In preceding papers (1, 2) we have outlined results which indicate that uropepsin excretion may serve as a useful index of the rate of the "intrinsic" or endocrine-like activity of the pepsinogen-secreting cells of the gastric mucosa. Data were also presented concerning the uropepsin excretion patterns of healthy, adult male subjects. Since various lesions of the stomach and duodenum are associ...

Operative specimens from various parts of gastroduodenal mucosa were analysed for immunoreactive pancreatic secretory trypsin inhibitor (PSTI) using a peroxidase-antiperoxidase method. Normal gastric mucosa exhibited a varying degree of PSTI immunoreactivity, which was more pronounced in the foveolar cells of gastric mucosa of fundus type than in the non-pepsinogen producing antrum-pyloric muco...

Conversion of pepsinogen to pepsin at acid pH involves an intramolecular reaction in which the unproteolyzed zymogen cleaves itself. This conclusion is based upon experiments in which pepsinogen, at low concentrations, was activated in the presence of substrate, hemoglobin. Under these conditions, the activation of pepsinogen is independent of pepsinogen concentration, and addition of pepsin do...