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Generation of In-Frame Gene Deletion Mutants in Pseudomonas aeruginosa and Testing for Virulence Attenuation in a Simple Mouse Model of Infection
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Generation of In-Frame Gene Deletion Mutants in Pseudomonas aeruginosa and Testing for Virulence Attenuation in a Simple Mouse Model of Infection

Published on: January 8, 2020

[Development of resistance in imipenem therapy in Pseudomonas aeruginosa]

T Krech, P Naumann

    Immunitat Und Infektion
    |November 1, 1986
    PubMed

    Insights

    A study found 8.4% of Pseudomonas aeruginosa strains resistant to imipenem. Antibiotic therapy caused resistance in 3.7%, sometimes rapidly in intensive care units.

    Area of Science:

    • Medical Microbiology
    • Infectious Diseases
    • Antimicrobial Resistance

    Background:

    • Pseudomonas aeruginosa is an opportunistic pathogen.
    • Carbapenem resistance in P. aeruginosa is a growing concern.
    • Imipenem is a critical antibiotic for treating P. aeruginosa infections.

    Purpose of the Study:

    • To investigate the prevalence of imipenem resistance in Pseudomonas aeruginosa.
    • To determine the impact of antibiotic therapy on imipenem resistance.
    • To observe the emergence of resistance in intensive care unit (ICU) patients.

    Main Methods:

    • Isolation and susceptibility testing of Pseudomonas aeruginosa strains.
    • Monitoring resistance development during antibiotic therapy.
    • Clinical observation of patients, particularly in ICUs.

    Main Results:

    • 8.4% of isolated P. aeruginosa strains exhibited resistance to imipenem.
    • Antibiotic therapy led to acquired imipenem resistance in 3.7% of strains.
    • Rapid emergence of imipenem resistance (within days) was observed in some ICU patients.
    • Two cases showed simultaneous loss of activity against other beta-lactams.

    Conclusions:

    • Imipenem resistance in P. aeruginosa is a significant issue.
    • Antibiotic treatment can drive the rapid development of resistance.
    • Close monitoring of P. aeruginosa in ICUs is crucial for effective treatment and infection control.

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