Background
Non-invasive tests can help with the diagnosis of
Helicobacter pylori
(
H. pylori
) infection and in determining patient prognosis following
H. pylori
eradication therapy. The aim of the study was to detect
H. pylori
antigens in the stool in symptomatic patients and to observe changes in the antigen test results following
H. pylori
eradication therapy.
Methods
A prospective study was conducted. Blood, urine and stool samples were collected from 62 dyspeptic patients. Anti-
H. pylori
IgM and IgG antibodies were detected in the serum by ELISA, anti-
H. pylori
IgG antibodies were detected in the urine by ICT and
H. pylori
antigens were detected in the stool by ELISA. Among the 62 patients, 39 (62.90%) were positive with all three methods. These 39 patients were asked to complete a 2-week course of medication and return after 6 weeks following completion of therapy to undergo repeated tests. In total, 3 dropped out of the study.
Results
Among the 62 dyspeptic patients, 41 (66.13%) were positive for serum IgG according to ELISA, 39 (62.90%) were positive for urine IgG according to ICT, 8 (12.90%) were positive for serum IgM according to ELISA, and 42 (67.74%) were positive for HpSA according to ELISA. After eradication therapy, 18 (50.00%) patients were positive for serum IgG, 19 (52.78%) were positive for urine IgG, 4 (11.11%) were positive for serum IgM and 5 (13.88%) were positive for HpSA. The difference in HpSA positivity before and after eradication therapy was statistically significant (P <0.05).
Conclusion
This study involved non-invasive procedures that can be used as first-line screening tools for the detection of active
H. pylori
infection to observe the role of HpSA test in diagnosis and assessment of prognosis following eradication therapy for
H. pylori
.