RRC ID 21419
Author Sato M, Shimoyama T, Takahashi R, Kajiyama H, Sano Y, Sakaedani N, Kato A, Hirata H, Fukuda Y.
Title Characterization and usefulness of stool antigen tests using a monoclonal antibody to Helicobacter pylori catalase.
Journal J. Gastroenterol. Hepatol.
Abstract BACKGROUND AND AIM:Two types of stool antigen tests have been used in the management of Helicobacter pylori infection. Testmate Pylori Antigen enzyme immunoassay (TPAg EIA) is a direct sandwich enzyme immunoassay (EIA) while Testmate Rapid Pylori Antigen (Rapid TPAg) is performed using immunochromatography. The aim of this study was to study the characterization and usefulness of these tests.
METHODS:Accuracy of both tests was studied using 111 fecal samples obtained from H. pylori-positive or -negative patients. Cross-reactivity was examined with four other Helicobacter spp. and five fecal bacteria in humans. To estimate the sensitivity of both kits, we tested H. pylori clinical strains. We also examined the diagnostic performances of both tests after the storage for 12 months.
RESULTS:The accuracy of both Testmate kits was 100% in fecal samples from 111 patients. No cross-reactivity was observed in both Testmate kits in five fecal bacteria and four other Helicobacter spp. TPAg EIA and Rapid TPAg showed positive results in 1342 of 1344, and 483 of 485 clinical strains, respectively. Diagnostic performances was maintained for 12 months when TPAg EIA was stored at 4°C and Rapid TPAg at 30°C.
CONCLUSIONS:We examined the details of high accuracy of TPAg EIA and Rapid TPAg. The diagnostic performance of both kits was maintained after storage for up to 1 year. The two types of tests would be useful in the management of H. pylori infection.
Volume 27 Suppl 3
Pages 23-8
Published 2012-4
DOI 10.1111/j.1440-1746.2012.07066.x
PMID 22486867
MeSH Antibodies, Monoclonal* Antibody Specificity Antigens, Bacterial / immunology* Case-Control Studies Catalase / immunology* Chromatography, Affinity* Cross Reactions Feces / microbiology Helicobacter Infections / diagnosis* Helicobacter Infections / microbiology Helicobacter pylori / enzymology Helicobacter pylori / immunology* Humans Immunoenzyme Techniques* Japan Predictive Value of Tests Protein Stability Reagent Kits, Diagnostic* Sensitivity and Specificity Temperature Time Factors
IF 3.632
Times Cited 9
General Microbes JCM 1192 JCM 1222