Helicobacter pylori cagA status and s and m alleles of vacA in isolates from individuals with a variety of H. pylori-associated gastric diseases.
نویسندگان
چکیده
The cagA gene was detected in 100% of 16 Helicobacter pylori isolates from patients with gastric carcinoma versus 78% of 18 isolates from patients with duodenal ulcers (P = 0.344) and only 64% of 22 isolates from patients with gastritis only (P = 0.005) in Brazil. Also, there was a significant association between isolation of cagA+ s1-type vacA H. pylori in cases of stomach cancer and ulcers as opposed to cases of gastritis only (P = 0.004), but this was not true in Houston (P = 0.238), where 94% of all isolates were cagA+.
منابع مشابه
VacA and cagA genotypes status and antimicrobial resistance properties of Helicobacter pylori strains isolated from meat products in Isfahan province, Iran
Although Helicobacter pylori has a significant impact on the occurrence of severe clinical syndromes, its exact ways of transmission and origin have not been identified. According to the results of some previously published articles, foods with animal origins play a substantial role in the transmission of H. pylori to humans. The present investigation was carried out to study the vacuolating cy...
متن کاملبررسی ارتباط آلل‌های s ژن vacA در هلیکوباکترپیلوری با بیماری‌های گوارشی در ایران: گزارش کوتاه
Background: Helicobacter pylori has been classified as the class I carcinogenic agent by world health organization. Colonization of the human stomach with H. pylori is a risk factor for gastroduodenal diseases. The secreted vacA toxin is an important H. pylori virulence factor that causes multiple alterations in gastric epithelial cells and T cells. Several families of vacA alleles have been de...
متن کاملRole of autophagy associated with Helicobacter pylori CagA and VacA toxins in gastric cancer
Helicobacter pylori (H. pylori) is a gram-negative microaerophilic bacterium that has been introduced as a cause of mucosal inflammation and gastric cancer. The most important pathogenic factors are VacA and CagA, which are associated with increased disease severity in clinical strains. Autophagy is a protected lysosomal degradation pathway degrading cytoplasmic content and is important in host...
متن کاملPrevalence of Pathogenic Genes cagA and vacA of Helicobacter pylori Isolated in Patients with Digestive Disorders
Background and Aims: Helicobacter pylori is the main cause of various gastroduodenal diseases. It is estimated that app roximately, more than half of the adult population in developed countries and 90% of people in developing countries infected with H. pylori. H. pylori infection may be related to Genetic of virulence factors and environmental factors. The aim of this study was to assess of fre...
متن کاملبررسی شیوع VacA و CagA در بیماران مبتلا به اولسر پپتیک
Background and Objective: Helicobacter pylori (H. pylori) infection is one of the most common gastrointestinal infections worldwide. Infection with H. pylori strains may results in different pathological manifestation and increased oxidative stress lead to a strong inflammatory response in gastric mucosa. There is continuing interest in identifying H. pylori virulence factors that might p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of clinical microbiology
دوره 36 11 شماره
صفحات -
تاریخ انتشار 1998