Helicobacter pylori vacAs1a and s1b alleles from clinical isolates from different regions of Chile show a distinct geographic distribution
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چکیده
منابع مشابه
Prevalence of vacuolating cytotoxin production and distribution of distinct vacA alleles in Helicobacter pylori from China.
Studies of Helicobacter pylori from the West have linked production of vacuolating cytotoxin and a particular signal sequence (s1a) allele of the underlying vacA gene to peptic ulcer disease (PUD). Among Chinese H. pylori, most isolates from both PUD and gastritis patients were toxigenic (35/46 and 29/35, respectively). Polymerase chain reaction and DNA sequencing showed that 95 of 96 isolates ...
متن کاملPhenotypic variation of Helicobacter pylori isolates from geographically distinct regions detected by lectin typing.
A total of 309 Helicobacter pylori isolates from 18 different countries were analyzed with a previously developed lectin typing system. The system was developed by using a proteolytic pretreatment to enhance the carbohydrate fraction of the sample. Four lectins from Ulex europaeus, Lotus tetragonolobus, Erythrina cristigali, and Triticum vulgaris were used to type the strains. The lectins were ...
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OBJECTIVES The aim of this study was to assess the rate of rifampicin resistance in Helicobacter pylori isolated from patients in Germany, to detect rifampicin resistance-associated mutations and to identify non-resistance-associated genetic variants in the rpoB gene. METHODS Susceptibility to rifampicin in a total of 1585 clinical isolates obtained between January 2003 and July 2006 was test...
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The main purpose of the study is to determine resistance pattern of bacterial isolates to selected antibiotics among 88 dyspeptic patients in Iran. Frequency of infection among these patients have been evaluated among dyspeptic patients old (45 boys and 43 girls, aged 5-18 years) from 2016 to 2017.Eighty-eight patients with gastroduodenal disorders were included in the study. Urease test modifi...
متن کاملGenetic Diversity of Fusarium oxysporum Isolates from Common Bean and Distribution of Mating Type Alleles
Fusarium wilt caused by Fusarium oxysporum Schltdl. f.sp. phaseoli (Fop), is one of the important diseases of the common bean in Iran and many of the bean growing countries. Incidence of the disease has been reported in tropical and semi-tropical regions of the world. This study was carried out to characterize genetic diversity of F. oxysporum isolates from the common bean by vegetative compati...
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ژورنال
عنوان ژورنال: World Journal of Gastroenterology
سال: 2005
ISSN: 1007-9327
DOI: 10.3748/wjg.v11.i40.6366