Distribution of quorum-sensing genes (lasI, lasR, RhlI, and rhlR) among clinical isolates of biofilm-forming Pseudomonas aeruginosa in Northern Iran - Summary - MDSpire

Distribution of quorum-sensing genes (lasI, lasR, RhlI, and rhlR) among clinical isolates of biofilm-forming Pseudomonas aeruginosa in Northern Iran

  • By

  • Robabeh Gholami Aghamahali

  • Mahya Pahlavanian

  • Hamid Reza Goli

  • December 23, 2025

  • 0 min

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Objective:

To determine the prevalence of lasI, lasR, rhlI, and rhlR genes among clinical biofilm-forming isolates of Pseudomonas aeruginosa and evaluate their association with biofilm production.

Key Findings:
  • P. aeruginosa is a significant opportunistic pathogen associated with high antibiotic resistance.
  • The presence of quorum-sensing genes (lasI, lasR, rhlI, rhlR) is crucial for biofilm formation.
  • This study fills a gap in understanding the prevalence of these genes in Northern Iran.
Interpretation:

The findings suggest that the quorum-sensing systems in P. aeruginosa play a vital role in biofilm formation, which is linked to increased virulence and antibiotic resistance.

Limitations:
  • The study is limited to a specific geographic region (Northern Iran), which may affect the generalizability of the results.
  • Only clinical isolates were studied, excluding environmental strains.
Conclusion:

Understanding the distribution of quorum-sensing genes can aid in developing targeted strategies for managing P. aeruginosa infections.

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