Abstract
CLOser is a new, one-step, qualitative anti-Helicobacter pylori immunoglobulin G test having the advantage of convenience and simplicity. We aimed to evaluate its diagnostic accuracy and to compare it with a quantitative enzyme-linked immunosorbent assay (ELISA) (HEL-pTEST II) in a study of 86 adult dyspeptic patients by using the results from histology and urease testing of gastric biopsies as a "gold standard." Forty-six patients were H. pylori positive. The sensitivities, specificities, and positive and negative predictive values were 95.7, 72.5, 80.0, and 93.5%, respectively, for CLOser and 93.5, 92.5, 93.5, and 92.5%, respectively, for HEL-pTEST II. The grade of the colored test bands in CLOser was correlated with antibody titers in HEL-pTEST II (r = 0.71; p < 0.001). The mean antibody titers were 13, 74, 186, and 328 U/ml for the negative, faint, thin, and thick bands, respectively, of CLOser. We concluded that the CLOser rapid serological test yielded sensitivity similar to that of the conventional ELISA. Although CLOser is not suitable for epidemiologic screening for H. pylori infection on account of lower specificity, it is particularly convenient and very easy to perform. Therefore, it may eventually become widely used in the office-based care of patients and lead to more cost-effective patient management decisions.
Full Text
The Full Text of this article is available as a PDF (239.8 KB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Atherton J. C., Spiller R. C. The urea breath test for Helicobacter pylori. Gut. 1994 Jun;35(6):723–725. doi: 10.1136/gut.35.6.723. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Coghlan J. G., Gilligan D., Humphries H., McKenna D., Dooley C., Sweeney E., Keane C., O'Morain C. Campylobacter pylori and recurrence of duodenal ulcers--a 12-month follow-up study. Lancet. 1987 Nov 14;2(8568):1109–1111. doi: 10.1016/s0140-6736(87)91545-5. [DOI] [PubMed] [Google Scholar]
- Dooley C. P., McKenna D., Humphreys H., Bourke S., Keane C. T., Sweeney E., O'Morain C. Histological gastritis in duodenal ulcer: relationship to Campylobacter pylori and effect of ulcer therapy. Am J Gastroenterol. 1988 Mar;83(3):278–282. [PubMed] [Google Scholar]
- Graham D. Y., Rabeneck L. Patients, payers, and paradigm shifts: what to do about Helicobacter pylori. Am J Gastroenterol. 1996 Feb;91(2):188–190. [PubMed] [Google Scholar]
- Hazell S. L., Borody T. J., Gal A., Lee A. Campylobacter pyloridis gastritis I: Detection of urease as a marker of bacterial colonization and gastritis. Am J Gastroenterol. 1987 Apr;82(4):292–296. [PubMed] [Google Scholar]
- Marshall B. J., Goodwin C. S., Warren J. R., Murray R., Blincow E. D., Blackbourn S. J., Phillips M., Waters T. E., Sanderson C. R. Prospective double-blind trial of duodenal ulcer relapse after eradication of Campylobacter pylori. Lancet. 1988 Dec 24;2(8626-8627):1437–1442. doi: 10.1016/s0140-6736(88)90929-4. [DOI] [PubMed] [Google Scholar]
- Marshall B. J., Warren J. R. Unidentified curved bacilli in the stomach of patients with gastritis and peptic ulceration. Lancet. 1984 Jun 16;1(8390):1311–1315. doi: 10.1016/s0140-6736(84)91816-6. [DOI] [PubMed] [Google Scholar]
- Mendall M. A., Jazrawi R. P., Marrero J. M., Molineaux N., Levi J., Maxwell J. D., Northfield T. C. Serology for Helicobacter pylori compared with symptom questionnaires in screening before direct access endoscopy. Gut. 1995 Mar;36(3):330–333. doi: 10.1136/gut.36.3.330. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rauws E. A., Tytgat G. N. Cure of duodenal ulcer associated with eradication of Helicobacter pylori. Lancet. 1990 May 26;335(8700):1233–1235. doi: 10.1016/0140-6736(90)91301-p. [DOI] [PubMed] [Google Scholar]
- Sobala G. M., Crabtree J. E., Pentith J. A., Rathbone B. J., Shallcross T. M., Wyatt J. I., Dixon M. F., Heatley R. V., Axon A. T. Screening dyspepsia by serology to Helicobacter pylori. Lancet. 1991 Jul 13;338(8759):94–96. doi: 10.1016/0140-6736(91)90085-4. [DOI] [PubMed] [Google Scholar]
- Tham T. C., McLaughlin N., Hughes D. F., Ferguson M., Crosbie J. J., Madden M., Namnyak S., O'Connor F. A. Possible role of Helicobacter pylori serology in reducing endoscopy workload. Postgrad Med J. 1994 Nov;70(829):809–812. doi: 10.1136/pgmj.70.829.809. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Westblom T. U., Lagging L. M., Midkiff B. R., Czinn S. J. Evaluation of QuickVue, a rapid enzyme immunoassay test for the detection of serum antibodies to Helicobacter pylori. Diagn Microbiol Infect Dis. 1993 May-Jun;16(4):317–320. doi: 10.1016/0732-8893(93)90082-i. [DOI] [PubMed] [Google Scholar]
- Westblom T. U., Madan E., Gudipati S., Midkiff B. R., Czinn S. J. Diagnosis of Helicobacter pylori infection in adult and pediatric patients by using Pyloriset, a rapid latex agglutination test. J Clin Microbiol. 1992 Jan;30(1):96–98. doi: 10.1128/jcm.30.1.96-98.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]