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Outcome of infections due to pandrug-resistant (PDR) Gram-negative bacteria

Matthew E Falagas1, Ioannis A Bliziotis, Sofia K Kasiakou

  • 1Alfa Institute of Biomedical Sciences, Athens, Greece. matthew.falagas@tufts.edu

BMC Infectious Diseases
|April 12, 2005
PubMed
Abstract

Insights

Colistin combined with beta-lactam antibiotics shows promise for treating pandrug-resistant Gram-negative bacterial infections. Careful re-use of polymyxins is crucial to combat rising antibiotic resistance.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Pharmacology

Background:

  • Rising prevalence of multidrug-resistant Gram-negative bacteria necessitates exploring alternative treatment strategies.
  • Polymyxins are being re-used, but resistance to these agents is emerging.
  • Pandrug-resistance (PDR) poses a critical threat, with some Gram-negative bacteria resistant to all available antibiotics.

Observation:

  • A case series investigated infections caused by pandrug-resistant (PDR) Gram-negative bacteria.
  • PDR isolates were defined as resistant to all 7 anti-pseudomonal antimicrobial agents.
  • The study focused on pathogens like Pseudomonas aeruginosa and Klebsiella pneumoniae.

Findings:

  • Combination therapy of colistin and beta-lactam antibiotics achieved clinical cure in 4 out of 6 patients.
  • This combination demonstrated efficacy against PDR Gram-negative bacterial infections.

Implications:

  • Colistin and beta-lactam combination therapy may be a viable option for managing PDR Gram-negative infections.
  • Judicious re-use of polymyxins is essential to mitigate the further development of PDR strains.
  • Further research is warranted to optimize treatment strategies for these challenging infections.

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