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Published on: April 18, 2019
Polymyxin B: a new strategy for multidrug-resistant Gram-negative organisms
1Chongqing Medical University, The First Affiliated Hospital, Department of Infectious Diseases, Chongqing 400016, China.
Expert Opinion on Investigational Drugs
|May 2, 2008
Summary
Polymyxin B is a crucial last-resort antibiotic for multidrug-resistant Gram-negative infections. Further research is needed to optimize its clinical use, focusing on susceptibility, dosing, combinations, resistance, and toxicity.
Area of Science:
- Pharmacology
- Infectious Diseases
- Microbiology
Background:
- Growing emergence of multidrug-resistant Gram-negative bacteria necessitates revisiting polymyxin B as a last-resort therapeutic.
- Despite decades of clinical use, fundamental knowledge gaps persist regarding polymyxin B's properties and applications.
Purpose of the Study:
- To consolidate existing knowledge on polymyxin B.
- To identify critical research gaps for future investigations into polymyxin B.
Main Methods:
- A comprehensive review of published English-language literature was conducted.
Main Results:
- Optimal polymyxin B use requires better understanding of standardized susceptibility testing.
- Knowledge gaps exist regarding serum and tissue concentrations, synergistic activity with other agents, and resistance mechanisms.
- A clearer definition of the polymyxin B concentration-toxicity relationship is needed.
Conclusions:
- Further research is essential to address knowledge gaps in polymyxin B's clinical application.
- Standardizing susceptibility testing and characterizing drug concentrations, efficacy in combination therapy, resistance, and toxicity are key areas for investigation.
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