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282672

Relation between Helicobacter pylori CagA gene Status and Antibiotic Resistance Pattern in Peptic Ulcer Patients

Article

Last updated: 28 Dec 2024

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Abstract

Background: Helicobacter pylori (H. pylori) associated peptic ulcer represents a therapeutic challenge with almost no regimen having achieved 100% eradication due to the emergence of antibiotic resistance. H. pylori virulence genes not only contribute in its pathogenesis but also have an influence on antibiotic resistance. Hence, the study of virulence genes effect on the acquisition of drug resistance may be an avenue to explore how to improve H. pylori eradication rates. Objectives: To estimate the prevalence of H. pylori cytotoxin-associated gene A (CagA) positive genotype among peptic ulcer(PU) patients, and to evaluate if there is an association between CagA virulence gene status and antibiotic resistance patterns in H. pylori strains. Methodology: Gastric biopsy specimens were collected from 54 enrolled patients with suspected peptic ulcer disease. Eighteen gastric biopsy specimens yielded H. pylori growth which were confirmed microscopically and by biochemical traits. Antimicrobial susceptibility patterns of H. pylori isolates were determined by disc diffusion and agar dilution methods. CagA was determined using PCR. Results: H. pylori CagA positive isolates were more significantly presented among peptic ulcer patients 13/18 (72.2%) compared to CagA negative isolates 5/18 (27.8%). High rates of antibiotic resistance against the first-line regimen of H. pylori associated PU were revealed with resistance rates of 100%, 61.1%, and 50% to metronidazole, amoxicillin and clarithromycin respectively, however (14/18; 87.8%) of H. pylori isolates were susceptible to ciprofloxacin and tetracycline. H. pylori CagA negative strains were associated with high levels of resistance to ciprofloxacin, clarithromycin, amoxicillin and tetracycline compared to CagA positive isolates. Conclusion: this work elucidated the high prevalence of H. pylori CagA positive genotype among Egyptian patients. The high level of resistance against the first line regimen of H. pylori associated peptic ulcer is alarming. Ciprofloxacin and tetracycline, both drugs can be the best choice in treating peptic ulcer patients. Absence of CagA gene in H. pylori was associated with high degrees of resistance and the presence of CagA gene be a predictor marker for H. pylori successful eradication

DOI

10.21608/ejmm.2019.282672

Keywords

CagA, Peptic ulcer, H. pylori, clarithromycin

Authors

First Name

Azza

Last Name

Labeeb

MiddleName

Z.

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Menoufia University, Egypt

Email

mhodmaghraby@yahoo.com

City

-

Orcid

-

First Name

Amira

Last Name

EL-Khyat

MiddleName

H

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Menoufia University, Egypt

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Orcid

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Volume

28

Article Issue

2

Related Issue

39228

Issue Date

2019-04-01

Receive Date

2023-01-28

Publish Date

2019-04-01

Page Start

69

Page End

76

Print ISSN

1110-2179

Online ISSN

2537-0979

Link

https://ejmm.journals.ekb.eg/article_282672.html

Detail API

https://ejmm.journals.ekb.eg/service?article_code=282672

Order

282,672

Type

New and original researches in the field of Microbiology.

Type Code

2,038

Publication Type

Journal

Publication Title

Egyptian Journal of Medical Microbiology

Publication Link

https://ejmm.journals.ekb.eg/

MainTitle

Relation between Helicobacter pylori CagA gene Status and Antibiotic Resistance Pattern in Peptic Ulcer Patients

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Article

Created At

28 Dec 2024