Volume 19, Issue 70 (May 2009)                   J Mazandaran Univ Med Sci 2009, 19(70): 26-32 | Back to browse issues page

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Talebi BezminAbadi A, Mohabati Mobarez A, Ajami A, Rafiee A, Taghwaii T. Evaluation on antibiotic resistance of helicobacter pylori isolated from patients admitted to tooba medical center, Sari. J Mazandaran Univ Med Sci. 2009; 19 (70) :26-32
URL: http://jmums.mazums.ac.ir/article-1-546-en.html
Abstract:   (24417 Views)
Background and purpose: Helicobacter pylori, which infect approximately one half of the world’s population, are an important risk factor in chronic gastritis, peptic ulcer disease, and gastric cancer. H. pylori eradication is now widely recommended as the most effective treatment of peptic ulcer disease. One of the most important reasons for treatment failure is H. pylori resistance to the antimicrobials usage in therapy. The aim of this study was to determine susceptibility patterns of H. pylori isolates in 6 routine anti-microbial agents in Northern Iran.
Materials and methods: 125 patients from Tooba Medical Center in Sari with endoscopic evidence of dyspepsia complaints were used for obtaining gastric biopsies specimens. Biopsies were sent to the laboratory in thioglycolate broth (transport medium). Bacteria were primarily cultured on Columbia agar supplemented with 7% horse blood, 7% fetal calf serum. Urease, Catalase and Oxidase activities were used for H. pylori identification. Bacterial suspensions equivalent to 3 Mc. Farlands were spread on plates, along with antibiotic disks and placed in the diameter zone. Inhibition was measured after 3 days of incubation in micro-aerophilic condition.
Results: H. pylori were isolated from 116(92.8%) subjects, a total of 125 biopsy specimens. Resistance to metronidazole, amoxicillin, clarithromycin, tetracycline, furazolidone and ciprofloxacin were 71%, 35%, 25%, 9%, 24% and 25%, respectively. Multiple resistance (amoxicillin-clarithromycin-metronidazole) were found in (6)5% of the isolates.
Conclusion: Comparison of our data with previous results showed that prevalence of H. pylori resistance to clarithromycin, furazolidone and metronidazole has increased in Iran considerably. Resistance to amoxicillin in our study was too high in comparison with foreign studies. The present study demonstrates the need for continuous monitoring of the antimicrobial susceptibility in H. pylori in order to determine the optimal drug regimens.
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