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Polymyxins: recent advances and challenges

Shan Yang1, Hairui Wang2, Dan Zhao1

  • 1Department of Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China.

Frontiers in Pharmacology
|July 8, 2024
PubMed

Insights

Polymyxins are crucial last-resort antibiotics against multidrug-resistant Gram-negative infections. This review examines their mechanisms, resistance, and pharmacokinetics to guide future antimicrobial development.

Area of Science:

  • Microbiology
  • Pharmacology
  • Infectious Diseases

Background:

  • Antibiotic resistance poses a significant global health threat.
  • Polymyxins, particularly colistin, are vital last-resort treatments for multidrug-resistant Gram-negative infections.
  • Understanding polymyxin resistance mechanisms and pharmacology is critical for sustained efficacy.

Purpose of the Study:

  • To review polymyxin antibacterial mechanisms and resistance pathways.
  • To explore innovative strategies for overcoming polymyxin resistance.
  • To investigate polymyxin pharmacokinetics and factors influencing in vivo behavior.

Main Methods:

  • Literature review of current research on polymyxins.
  • Analysis of antibacterial mechanisms and resistance pathways.
  • Examination of pharmacokinetic data and in vivo studies.

Main Results:

  • Polymyxins exhibit complex resistance mechanisms.
  • Various strategies are being developed to combat polymyxin resistance.
  • Pharmacokinetic variability impacts polymyxin efficacy and toxicity.

Conclusions:

  • A comprehensive understanding of polymyxins is essential for combating resistant bacterial infections.
  • Further research is needed to optimize polymyxin use and develop new agents.
  • Advancing polymyxin research is crucial for addressing future antimicrobial challenges.
Keywords:
antibacterial mechanismdrug resistance mechanismsnanotechnologypharmacokineticspolymyxins

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