Helicobacter Pylori Epidemiology
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Primary antibiotic resistance and its relationship with cagA and vacA genes in Helicobacter pylori isolates from Algerian patients
Abstract The epidemiology of Helicobacter pylori resistance to antibiotics is poorly documented in Africa and especially in Algeria. The aim of our study was to determine the antibiotic resistance rates, as well as its possible relationship with VacA and CagA virulence markers of isolates from Algerian patients. One hundred and fifty one H. pylori isolate we
Braz. J. Microbiol.. Publicado em: 2018-09
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2. Endoscopia digestiva alta na rede pública de saúde : diagnósticos de lesões do tubo digestivo alto em uma população de atendimento primário na região sudoeste do município de Campinas, São Paulo - Brasil = Endoscopy in public health : diagnoses of lesions in the upper digestive tract in a population of primary care in the region southwest of the city of Campinas, São Paulo - Brazil / Endoscopy in public health : diagnoses of lesions in the upper digestive tract in a population of primary care in the region southwest of the city of Campinas, São Paulo - Brazil
Upper digestive tract endoscopy (UDTE) is one of the most highly indicated exams for the investigation of upper digestive tract diseases. It is normally performed in high-complexity hospitals and specialized clinics; however, the high demand for UDTE examinations and the growing number of professionals specializing in endoscopic techniques have resulted in a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/07/2012
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3. Reinfecção pelo Helicobacter pylori em pacientes brasileiros com úlcera péptica, em seguimento de 5 anos / Helicobacter pylori reinfection in brazilian patients with peptic ulcer disease, a five year follow-up
Introdução: A reinfecção pelo Helicobacter pylori em países em desenvolvimento parece ser maior do que nos países desenvolvidos. O retratamento da bactéria e o controle periódico de cura são necessários, quando elevadas taxas de reinfecção são verificadas. O objetivo do trabalho foi determinar a taxa anual de reinfecção, em pacientes brasileir
Publicado em: 2009
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4. Prevalence of H. pylori infection associated with clinical disorders diagnosed by upper gastrointestinal endoscopies, retrospective analysis of 1478 cases / Prevalência de infecção pelo Helicobacter pylori associada às afecções diagnosticadas por endoscopia digestiva alta: análise retrospectiva de 1478 casos
Introduction: Peptic ulcer prevalence and other esophageal and gastroduodenal disorders associated with H. pylori infection changed as a consequence of its eradication and the use of gastric acid secretor inhibitors. Purpose: To establish H. pylori infection prevalence associated with clinical disorders diagnosed by upper gastrointestinal endoscopy, and dete
Publicado em: 2009
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5. Culture of Helicobacter pylori from a Gastric String May Be an Alternative to Endoscopic Biopsy
Helicobacter pylori was isolated from a swallowed string from 32 of 33 adult subjects (97%) with selective culture media. With this method, antibiotic susceptibility testing and molecular epidemiology studies of H. pylori can be carried out without the need for the collection of specimens by endoscopic biopsy.
American Society for Microbiology.
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6. Detection and identification of Helicobacter pylori by the polymerase chain reaction.
A polymerase chain reaction for the specific detection of Helicobacter pylori was developed using a primer pair derived from the nucleotide sequence of the urease A gene of H pylori. Specific amplification of a 411 base pair DNA fragment from all strains of H pylori tested was achieved. Ten organisms were detected using the PCR and the technique permitted di
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7. Helicobacter mustelae isolation from feces of ferrets: evidence to support fecal-oral transmission of a gastric Helicobacter.
Helicobacter mustelae has been isolated from stomachs of ferrets with chronic gastritis and ulcers. When H. mustelae is inoculated orally into H. mustelae-negative ferrets, the animals become colonized and develop gastritis, a significant immune response, and a transient hypochlorhydria. All of these features mimic Helicobacter pylori-induced gastric disease
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8. Characteristics of Helicobacter pylori Infection in Jamaican Adults with Gastrointestinal Symptoms
Helicobacter pylori infection is common in Jamaica. Describing its epidemiology in a population-based study depends largely on serology, but serologic assays have not been validated in this population. To address this issue, we examined the presence of H. pylori infection in 30 sequential adult patients with gastroduodenal symptoms by three biopsy-based meth
American Society for Microbiology.
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9. Specific Serum Immunoglobulin G Response to Urease and CagA Antigens of Helicobacter pylori in Infected Children and Adults in a Country with High Prevalence of Infection
Few studies have analyzed the immune response to Helicobacter pylori CagA and urease antigens across age groups in the same population. The aim of this study was to analyze the serologic immunoglobulin G (IgG) response to CagA and urease proteins in children and adults with gastrointestinal symptoms and belonging to the same population and similar socioecono
American Society for Microbiology.
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10. Unexpected Decrease with Age of Helicobacter pylori Seroprevalence among Swedish Blood Donors
Blood donors are often used as proxies for the general population in studies of Helicobacter pylori epidemiology. Our aim was to test if the age-specific seroprevalence rates among blood donors match with the corresponding rates in a random population sample. This descriptive study was based on sera obtained from 3,502 blood donors representing all Swedish c
American Society for Microbiology.
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11. Variants of the 3′ Region of the cagA Gene in Helicobacter pylori Isolates from Patients with Different H. pylori-Associated Diseases
The CagA protein of Helicobacter pylori is an immunogenic antigen of variable size and unknown function that has been associated with increased virulence as well as two mutually exclusive diseases, duodenal ulcer and gastric carcinoma. The 3′ region of the cagA gene contains repeated sequences. To determine whether there are structural changes in the 3′
American Society for Microbiology.
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12. Use of a Dry-Plasma Collection Device to Overcome Problems with Storage and Transportation of Blood Samples for Epidemiology Studies in Developing Countries
Studies are difficult in areas lacking modern facilities due to the inability to reliably collect, store, and ship samples. Thus, we sought to evaluate the use of a dry plasma collection device for seroepidemiology studies. Plasma was obtained by fingerstick using a commercial dry plasma collection device (Chemcard Plasma Collection Device) and serum (venipu
American Society for Microbiology.