کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9278065 1222828 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
cagA gene variants in Malaysian Helicobacter pylori strains isolated from patients of different ethnic groups
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ایمونولوژی
پیش نمایش صفحه اول مقاله
cagA gene variants in Malaysian Helicobacter pylori strains isolated from patients of different ethnic groups
چکیده انگلیسی
Helicobacter pylori infection of a distinct subtype of cagA may lead to different pathological manifestation. The aim of this study is to determine the presence of cagA gene and its variants in H. pylori infection among different ethnic groups and its effect on gastroduodenal diseases. Overall detection of cagA among the 205 clinical isolates of H. pylori was 94%. Variations in size of the 3′ region of cagA gene were examined among 192 Malaysian H. pylori cagA-positive strains. Results showed that three cagA variants differing in fragment length of PCR products were detected and designated as type A (621-651 bp), type B (732-735 bp) and type C (525 bp). Although there was no association between any of the cagA subtypes with peptic ulcer disease (p > 0.05), an association between cagA subtypes with a specific ethnic group was observed. Specific-cagA subtype A strains were predominantly isolated from Chinese compared to Malays and Indians (p < 0.0005), and cagA subtype B strains were predominantly isolated from Malays and Indians compared to Chinese (p < 0.05). The cagA type A strains of H. pylori is commonly found in the Chinese patients who have a higher risk of peptic ulcer disease, thus indicating that it could be used as an important clinical biomarker for a more severe infection.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEMS Immunology and Medical Microbiology - Volume 44, Issue 2, 1 May 2005, Pages 239-242
نویسندگان
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