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Smoking, Proton Pump Inhibitors and Antibiotic Administration as Factors Affecting Direct Screening of Helicobacter Pylori Infection Among Patients With Dyspepsia

AUTHORS

Tabassom Mirzaei 2 , Masoud Alebouyeh 2 , * , Leila Shokrzadeh 2 , Hamid Asadzadeh Aghdaei 2 , Nasataran Farzi 1 , Homayoun Zojaji 1 , Mohammad Reza Zali 2

AUTHORS INFORMATION

2 Basic Science and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran

1 Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran

How to Cite: Mirzaei T, Alebouyeh M, Shokrzadeh L, Asadzadeh Aghdaei H, Farzi N, et al. Smoking, Proton Pump Inhibitors and Antibiotic Administration as Factors Affecting Direct Screening of Helicobacter Pylori Infection Among Patients With Dyspepsia, Arch Clin Infect Dis. Online ahead of Print ; 9(2):15774. doi: 10.5812/archcid.15774.

ARTICLE INFORMATION

Archives of Clinical Infectious Diseases: 9 (2); 15774
Published Online: January 24, 2014
Article Type: Research Article
Received: October 27, 2013
Accepted: November 19, 2013
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Abstract

Background: Helicobacter pylori diagnostic tests can be affected by different interventional factors. We studied the effects of smoking, proton pump inhibitors (PPIs) and antibiotic administration on results of the bacterial culture, and its diagnosis tests due to polymerase chain reaction (PCR) and rapid urease test (RUT) methods.

Objectives: This study was aimed to investigate the undesirable effects of PPI and antibiotics on the results of H. pylori screening tests in patients with gastritis.

Patients and Methods: A total of 100 patients with gastritis and indication for upper gastrointestinal (GI) endoscopy were enrolled in this study. Three biopsy samples from each patient were immediately processed for detection of H. pylori based on culture, RUT, and PCR methods. The sensitivity of these three detection methods was measured in the three infected patients groups that were subjected to conventional therapy, proton pump inhibitors (PPIs) therapy, and no medication as control group. The possible effects of PPIs and antibiotics on H. pylori detection were analyzed in vitro.

Results: The prevalence of H. pylori infection was higher among the non users and PPI users (40% and 57.9%, respectively), while the number of isolated bacteria from the patients with a history of recent antibiotic prescription was significantly lower (18.75%) (P <0.05). An inverse association was found between H. pylori infection and smoking. Among the studied methods, PCR showed the highest sensitivity in all groups. The results of RUT illustrated a significant difference between the PPI users and patients with a history of recent antibiotic administration that was consistent with the results of in vitro study (P = 0.01).

Conclusions: This study revealed a lower sensitivity of common H. pylori screening tests during the antibiotic or PPI administration. PCR was determined as the most accurate test used for diagnosis of H. pylori infections.

Keywords

Helicobacter pylori Smoking Proton Pump Inhibitors Antibacterial Agents

© 2014, Archives of Clinical Infectious Diseases. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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