[Helicobacter pylori infection and phagocytosis].

Helicobacter pylori is a chronic infectious agent defined as the major pathogen causing gastritis, gastric and duodenal ulcer, gastric carcinoma and mucosa associated lenfoid tissue (MALT) lymphoma. H. pylori is the only microorganism known to get colonized in human stomach and inhabit in gastric mucosal cells.

Detection of Helicobacter pylori and determination of clarithromycin susceptibility using formalin-fixed, paraffin-embedded gastric biopsy specimens by fluorescence in situ hybridization.

Background: Clarithromycin resistance and poor compliance to therapy are often responsible for Helicobacter pylori eradication therapy failure.

Aim: To evaluate fluorescence in situ hybridization (FISH) as a nonculture method to simultaneously detect H. pylori and to identify clarithromycin resistance.

Clinical role and importance of fluorescence in situ hybridization method in diagnosis of H pylori infection and determination of clarithromycin resistance in H pylori eradication therapy.

H pylori is etiologically associated with gastritis, gastric and duodenal ulcers, gastric adenocarcinoma and mucosa-associated lymphoid tissue (MALT) lymphoma. Eradicating H pylori may convert rapidly the outcome of related diseases with the use of more accurate diagnostic molecular tests. Indeed some of the tests cannot give the evidence of current infection; H pylori can be detected by noninvasive and invasive methods, the latter requiring an endoscopy.

Comparison of invasive methods and two different stool antigen tests for diagnosis of H pylori infection in patients with gastric bleeding.

Aim: To compare two different H pylori stool antigen tests as noninvasive diagnostic methods.

Methods: The study population consisted of 22 upper gastrointestinal system bleeding patients. Urea breath test (UBT), rapid urease test (RUT) and histopathological examination were applied to all patients.

[Antibiotic resistance in Helicobacter pylori and molecular methods for the detection of resistance].

Helicobacter pylori which is the major agent causing peptic ulcer, gastric cancer and gastric lymphoma, is identified as a class I carcinogen. Invasive and non-invasive tests have been used in the diagnosis of H. pylori infection.