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Publication Type
Journal Article
Author, Analytic
Hisada, Michie; Lee, Michael G.; Hanchard, Barrie; Owens, M.; Song, Q.; van Doorn, L. J.; Cutler, A. F.; Gold, B. D.
Author Affiliation, Ana.
Department of Medicine
Article Title
Characteristics of Helicobacter pylori infection in Jamaican adults with gastrointestinal symptoms
Medium Designator
n/a
Connective Phrase
n/a
Journal Title
Journal of Clinical Microbiology
Translated Title
n/a
Reprint Status
n/a
Date of Publication
2001
Volume ID
39
Issue ID
1
Page(s)
212-16
Language
eng
Connective Phrase
n/a
Location/URL
n/a
ISSN
0095-1137
Notes
n/a
Abstract
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 methods (rapid urease test, histology, and culture) as well as by one research and two commercial enzyme-linked immunosorbent assays (ELISAs). A patient was considered H. pylori positive if the organism was detected by at least one biopsy-based method. Eighteen (60%) of the 30 patients were H. pylori positive by these criteria, whereas 21 (70%) were seropositive for H. pylori immunoglobulin G by our research ELISA. The presence of H. pylori infection in patients with gastric cancer and those with chronic gastritis was missed by biopsy-based methods but was detected by serologic assays. This observation indicates that serologic assays may be better suited for the detection of this infection in a population in which H. pylori- associated pathology is prevalent. The performance of our research ELISA in detecting biopsy-based H. pylori-positive cases was excellent, with a sensitivity and specificity of 100% and 75%, respectively. Molecular genotyping of the isolates revealed that the predominant H. pylori genotypes in this cohort of Jamaicans were cagA(+) vacA slb-m1, and iceA2. The validated serologic assay enables us to interpret epidemiologic data from population-based studies in Jamaica by comparison to those from other populations.....
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