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  1. Home
  3. Associations Between Biofilm Formation And Virulence Factors Among Clinical Helicobacter Pylori Isolates.
  1. Home
  3. Associations Between Biofilm Formation And Virulence Factors Among Clinical Helicobacter Pylori Isolates.

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Associations between biofilm formation and virulence factors among clinical Helicobacter pylori isolates.

Mariam Ashkar Daw1, Maya Azrad2, Avi Peretz3

  • 1Azrieli Faculty of Medicine, Bar-Ilan University, Safed, 1311502, Israel.

Microbial Pathogenesis
|September 25, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Most Helicobacter pylori (H. pylori) isolates form biofilms, a trait linked to antibiotic resistance, particularly ampicillin, levofloxacin, and rifampicin. Understanding biofilm factors is crucial for developing new H. pylori treatments.

Keywords:
Antibiotic susceptibilityBiofilm productionHelicobacter pyloricagA presencevacA genotype

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Gastroenterology

Background:

  • Helicobacter pylori (H. pylori) is a major cause of gastrointestinal diseases.
  • Key virulence factors include biofilm formation, CagA, VacA, and urease activity.
  • Biofilm production aids H. pylori survival and pathogenesis.

Purpose of the Study:

  • To characterize bacterial factors associated with biofilm production in clinical H. pylori isolates.
  • To investigate the relationship between biofilm formation and virulence factors (CagA, VacA).
  • To assess the correlation between biofilm production and antibiotic resistance.

Main Methods:

  • Biofilm production assessed using the crystal violet method.
  • PCR used for vacA genotyping and cagA gene detection.
  • Urease activity measured by the phenol red method.
  • Antibiotic susceptibility determined by Etest.

Main Results:

  • Most clinical H. pylori isolates exhibited biofilm production.
  • No significant association found between biofilm formation and CagA presence or vacA genotype.
  • Biofilm production showed varied associations with antibiotic resistance, with strong biofilm producers more common among isolates resistant to amoxicillin, levofloxacin, and rifampicin.
  • Isolates susceptible to tetracycline were more frequently strong biofilm producers.

Conclusions:

  • Further research is required to elucidate the regulatory mechanisms of H. pylori biofilm production.
  • Understanding biofilm formation is essential for developing novel therapeutic strategies targeting H. pylori biofilms.