Comparison of three commercially available enzyme-linked immunosorbent assays and biopsy-dependent diagnosis for detecting Helicobacter pylori infection
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Published in | Journal of Clinical Microbiology Vol. 34; no. 1; pp. 94 - 97 |
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Format | Journal Article |
Language | English |
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American Society for Microbiology
01.01.1996
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AbstractList | We evaluated the performance of three enzyme-linked immunosorbent assays (ELISAs) in detecting serum immunoglobulin G (IgG) and IgA antibodies to Helicobacter pylori; two were new ones from Pyloriset (Pyloriset EIA-G update and Pyloriset EIA-A update; Orion Diagnostica, Espoo, Finland), and the third was the Malakit EIA-G (Biolab, Limal, Belgium). Serum samples from 154 dyspeptic patients were collected. As a reference method, multiple biopsy specimens from different anatomical areas of the stomach were obtained by endoscopy and were analyzed by culture and/or histology and direct urease testing. Accordingly, 126 patients (82%) were found to be H. pylori positive and 28 patients (18%) were found to be H. pylori negative. To validate serology as a predictor of H. pylori infection, sensitivity, specificity, positive and negative predictive values, and accuracy of the assays were calculated against the H. pylori status as determined by the reference method. The corresponding data for the different ELISAs were 100%, 79%, 95%, 100%, and 96% for the Pyloriset ELA-G update, 81%, 89%, 97%, 52%, and 82% for the Pyloriset EIA-A update, and 87%, 86%, 96%, 60%, and 87% for the Malakit EIA-G, respectively. We conclude that the Pyloriset EIA-G update is a reliable and accurate test and that because of its 100% sensitivity, conjunctional IgA testing is not necessary. Its 100% negative predictive value makes it a very useful screening test. For purposes of excluding infection with H. pylori, the performance of the Malakit EIA-G is moderate but can be improved by conjunctional IgA testing. The Pyloriset EIA-A update can be useful as such a conjunctional test. We evaluated the performance of three enzyme-linked immunosorbent assays (ELISAs) in detecting serum immunoglobulin G (IgG) and IgA antibodies to Helicobacter pylori; two were new ones from Pyloriset (Pyloriset EIA-G update and Pyloriset EIA-A update; Orion-Diagnostica, Espoo, Finland), and the third was the Malakit EIA-G (Biolab, Limal, Belgium). Serum samples from 154 dyspeptic patients were collected. As a reference method, multiple biopsy specimens from different anatomical areas of the stomach were obtained by endoscopy and were analyzed by culture and/or histology and direct urease testing. Accordingly, 126 patients (82%) were found to be H. pylori positive and 28 patients (18%) were found to be H. pylori negative. To validate serology as a predictor of H. pylori infection, sensitivity, specificity, positive and negative predictive values, and accuracy of the assays were calculated against the H. pylori status as determined by the reference method. The corresponding data for the different ELISAs were 100%, 79%, 95%, 100%, and 96% for the Pyloriset EIA-G update, 81%, 89%, 97%, 52%, and 82% for the Pyloriset EIA-A update, and 87%, 86%, 96%, 60%, and 87% for the Malakit EIA-G, respectively. We conclude that the Pyloriset EIA-G update is a reliable and accurate test and that because of its 100% sensitivity, conjunctional IgA testing is not necessary. Its 100% negative predictive value makes it a very useful screening test. For purposes of excluding infection with H. pylori, the performance of the Malakit EIA-G is moderate but can be improved by conjunctional IgA testing. The Pyloriset EIA-A update can be useful as such a conjunctional test. Article Usage Stats Services JCM Citing Articles Google Scholar PubMed Related Content Social Bookmarking CiteULike Delicious Digg Facebook Google+ Mendeley Reddit StumbleUpon Twitter current issue JCM About JCM Subscribers Authors Reviewers Advertisers Inquiries from the Press Permissions & Commercial Reprints ASM Journals Public Access Policy JCM RSS Feeds 1752 N Street N.W. • Washington DC 20036 202.737.3600 • 202.942.9355 fax • journals@asmusa.org Print ISSN: 0095-1137 Online ISSN: 1098-660X Copyright © 2014 by the American Society for Microbiology. For an alternate route to JCM .asm.org, visit: JCM |
Author | A R Jansz B A van de Wouw A P Staals R T Roymans W A de Boer |
AuthorAffiliation | Department of Internal Medicin, Sint Joseph Hospital Veldhoven, The Netherlands |
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Keywords | Human Stomach Spirillales Antibody Spirillaceae Method Infection Helicobacter pylori Biopsy Serological method Kit Bacteriosis Digestive diseases Bacteria Diagnosis Detection ELISA assay Comparative study Gastric disease |
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Mendeley... We evaluated the performance of three enzyme-linked immunosorbent assays (ELISAs) in detecting serum immunoglobulin G (IgG) and IgA antibodies to Helicobacter... |
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SubjectTerms | Adolescent Adult Aged Aged, 80 and over Antibodies, Bacterial - blood Bacterial diseases Bacterial diseases of the digestive system and abdomen Biological and medical sciences Biopsy Enzyme-Linked Immunosorbent Assay - methods Enzyme-Linked Immunosorbent Assay - statistics & numerical data Female Gastritis - diagnosis Gastritis - immunology Gastritis - microbiology Helicobacter Infections - diagnosis Helicobacter Infections - immunology Helicobacter Infections - microbiology Helicobacter pylori Helicobacter pylori - immunology Helicobacter pylori - isolation & purification Human bacterial diseases Humans Immunoglobulin A - blood Immunoglobulin G - blood Infectious diseases Male Medical sciences Middle Aged Reproducibility of Results Sensitivity and Specificity |
Title | Comparison of three commercially available enzyme-linked immunosorbent assays and biopsy-dependent diagnosis for detecting Helicobacter pylori infection |
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