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Oxazolidinone antibiotics

D J Diekema1, R N Jones

  • 1Division of Infectious Diseases, Department of Internal Medicine, University of Iowa College of Medicine, Iowa City, Iowa 52242, USA. daniel-diekema@uiowa.edu

Lancet (London, England)
|December 19, 2001
PubMed

Insights

New antimicrobial drugs are needed to combat resistant gram-positive pathogens. Linezolid, an oxazolidinone, shows promise for treating serious infections caused by resistant bacteria like MRSA and VRE.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Pharmacology

Background:

  • Gram-positive bacterial infections pose a growing threat due to increasing antimicrobial resistance.
  • Novel therapeutic agents are essential to overcome resistance in pathogens such as Staphylococcus aureus, Enterococcus spp., and Streptococcus pneumoniae.

Purpose of the Study:

  • To evaluate the efficacy of linezolid, a novel oxazolidinone antimicrobial agent, against resistant gram-positive pathogens.
  • To assess linezolid's pharmacokinetic and toxicological profiles for clinical application.

Main Methods:

  • In vitro susceptibility testing against key resistant gram-positive pathogens.
  • Clinical trial data analysis for pneumonia, skin/soft-tissue infections, and vancomycin-resistant enterococci infections.
  • Pharmacokinetic and safety assessments of linezolid.

Main Results:

  • Linezolid exhibits in vitro bacteriostatic activity against meticillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant enterococci (VRE), and penicillin-resistant Streptococcus pneumoniae.
  • Demonstrated clinical efficacy in treating pneumonia, skin and soft-tissue infections, and VRE infections.
  • Favorable pharmacokinetic profile with near-complete oral bioavailability and acceptable toxicity.

Conclusions:

  • Linezolid represents a significant advancement in treating serious infections caused by multidrug-resistant gram-positive bacteria.
  • It offers a viable alternative to existing therapies like glycopeptides and streptogramins.
  • Further oxazolidinone modifications may yield agents with enhanced potency and broader activity spectra.

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