Prevalence of helicobacter pylori CagE genotypes in patients with non-ulcer dyspepsia - Journal of Mazandaran University of Medical Sciences
Volume 18, Number 64 (May 2008)                   J Mazandaran Univ Med Sci 2008, 18(64): 37-43 | Back to browse issues page


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Shirazi M, Pourmand M, Haghshenas M, Rezaee V. Prevalence of helicobacter pylori CagE genotypes, in patients with non-ulcer dyspepsia, . J Mazandaran Univ Med Sci. 2008; 18 (64) :37-43
URL: http://jmums.mazums.ac.ir/article-1-466-en.html

Abstract:   (21426 Views)
Background and Purpose: Helicobacter pylori are a bacterial pathogen evolved to chronically colonize the gastric epithelium and causes gastritis, peptic ulcers, and even gastric malignancies in few infected humans. More recently, a pathogenicity island has been identified within the H. pylori genome that contains a cluster of genes, including cagE. The aim of the current study was to investigate the prevalence of cagE genotypes of H. pylori isolates from patients with NUD(Non Ulcer Dyspepsia), peptic ulcer and cancer.
Materials and Methods: 150 Gastric biopsy specimens obtained from patients were inoculated onto a Brucella Columbia Agar containing 5% sheep for 3 to 5 days at 37°C under micro aerobic conditions (5% O2, 5% CO2, and 90% N2). After DNA extraction, genotyping of the cagE gene was performed by PCR amplification using the primers. PCR products were separated by 1% agarose gel electrophoresis and examined under UV illumination.
Results: Of 92 positive cultures, 34, 28, 20, and 10 isolations were obtained from patients with NUD, duodenal ulcers (DU), gastric ulcers (GU) and gastric cancer (GC), respectively. The frequency of cagE gene was 88/24%, 100% , 85% , 100% and within isolates of patients with NUD, DU, GU and GC, respectively.
Conclusion: The presence of cagE in patients with Helicobacter pylori infection is not a marker for predicting or diagnosing the resultant diseases.
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Type of Study: Research(Original) |

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