Lymphocytic Subsets and Cytokine Production With H. Pylori Infection

National Taiwan University

Status

Completed

Conditions

Dyspepsia

Gastric Ulcer

Duodenal Ulcer

Treatments

Procedure: immune response

Study type

Interventional

Funder types

Other

Identifiers

NCT00173953

90M010

Details and patient eligibility

About

The aims of this study are 1) to determine the cytokines produced by both Th1 and Th2 subsets in gastric antral biopsy specimens from Taiwanese patients before and after anti H. pylori therapy; 2) to obtain a detailed phenotypic characterization and distribution pattern of mucosal lymphocytes in H. pylori-associated gastritis and to define possible contributing immune mechanisms responsible for the chronicity of the disease and its associated lesions.

Full description

Helicobacter pylori, a Gram-negative spiral bacterium, has been first isolated from a patient with chronic active gastritis since 1982. Recent studies strongly suggest that chronic infection with H. pylori is tightly associated with chronic gastritis, peptic ulcer, and gastric carcinoma. However, only a minority of infected people develop signs and symptoms of gastric pathology. Thus, both host and microbial factors may lead to different outcomes of infection. In spite of high prevalence in general population and increasing clinical attention has been paid on this infection, the knowledge of pathogenic mechanism of H. pylori infection is still limited and little is known about the role of host immune response in the pathogenesis of disease.The aims of this study are 1) to determine the cytokines produced by both Th1 and Th2 subsets in gastric antral biopsy specimens from Taiwanese patients before and after anti H. pylori therapy; 2) to obtain a detailed phenotypic characterization and distribution pattern of mucosal lymphocytes in H. pylori-associated gastritis and to define possible contributing immune mechanisms responsible for the chronicity of the disease and its associated lesions.

Sex

All

Ages

18 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria