نتایج جستجو برای: cytotoxin associated gene a caga
تعداد نتایج: 13927663 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE Accumulating evidence indicates that a variety of infections contribute to the pathogenesis of glaucoma. The role of Helicobacter pylori infection in glaucoma is controversial. DESIGN Prospective, population-based study. PARTICIPANTS Patients with various types of glaucoma and a control group of patients with cataract. METHODS We evaluated seropositivity to H. pylor...
BACKGROUND Helicobacter pylori blood group antigen binding adhesin (BabA) mediates bacterial adherence to human blood group antigens on gastric epithelium. Although strains harbouring babA2 were recently found to be associated with peptic ulcer and gastric cancer, the role of babA2 in cellular turnover, severity of gastritis, and premalignant changes is poorly understood. AIM We correlated H ...
Background: Helicobacter pylori blood group antigen binding adhesin (BabA) mediates bacterial adherence to human blood group antigens on gastric epithelium. Although strains harbouring babA2 were recently found to be associated with peptic ulcer and gastric cancer, the role of babA2 in cellular turnover, severity of gastritis, and premalignant changes is poorly understood. Aim: We correlated H ...
Persistent infection with Helicobacter pylori confers an increased risk for the development of gastric cancer. However, the exact mechanisms whereby this bacterium causes carcinogenesis have not been completely elucidated. Recent evidence indicates that aberrant activation of the signal transducers and activators of transcription 3 (STAT3) signaling pathway may play a role in gastric carcinogen...
AIMS To assess the significance of cagA and vacA subtypes of Helicobacter pylori in relation to inflammation and density of bacterial colonisation in vivo within a dyspeptic UK population. METHODS Dyspeptic patients who were Helicobacter pylori positive had antral samples taken for histology and culture. Gastroduodenal pathology was noted. The grade of bacterial density and inflammation was a...
Helicobacter pylori has been assigned as a class I carcinogen because of its relation to gastric adenocarcinoma. Chronic H. pylori infection may lead to severe gastritis, glandular atrophy (AT), and intestinal metaplasia (IM). Strains secreting the vacuolating toxin VacA and producing the cytotoxin-associated antigen CagA (type 1 strains), as well as the blood group antigen binding adhesin (Bab...
BACKGROUND Omeprazole (OMP), a proton pump inhibitor, is a highly effective drug for the management of acid-related disorders. Infections resulting from cytotoxin antigen A (CagA) positive Helicobacter pylori strains have been associated with higher grades of gastric mucosal inflammation. Nuclear factor (NF)-κB activation has been reported to participate in H. pylori-induced gastritis in humans...
Helicobacter pylori (H. pylori) is a spiral-shaped Gram-negative bacterium that causes the most common chronic infection in the human stomach. Approximately 1%-3% of infected individuals develop gastric cancer. However, the mechanisms by which H. pylori induces gastric cancer are not completely understood. The available evidence indicates a strong link between the virulence factor of H. pylori,...
Helicobacter (H.) suis has been associated with chronic gastritis and ulcers of the pars oesophagea in pigs, and with gastritis, peptic ulcer disease and gastric mucosa-associated lymphoid tissue lymphoma in humans. In order to obtain better insight into the genes involved in pathogenicity and in the specific adaptation to the gastric environment of H. suis, a genome analysis was performed of t...
Elevated leukocyte counts can be a marker of inflammation and infection. The aim of this study was to determine the total leukocyte count and neutrophil-lymphocyte count ratio (NLCR) among Helicobacter pylori-infected patients with peptic ulcer disease (PU) and among asymptomatic subjects (AS) and to evaluate if there is an association between these lab values and the presence of the H. pylori ...
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