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Colistin and polymyxin B: A re-emergence

Author(s): Gupta Sachin | Govil Deepak | Kakar Prem | Prakash Om | Arora Deep | Das Shibani | Govil Pradeep | Malhotra Ashima

Journal: Indian Journal of Critical Care Medicine
ISSN 0972-5229

Volume: 13;
Issue: 2;
Start page: 49;
Date: 2009;
Original page

Keywords: Multidrug-resistant organisms | polymyxins

One of the greatest achievements of modern medicine is the development of antibiotics against life-threatening infections, but the emergence of multidrug-resistant (MDR) gram negative bacteria has drastically narrowed down the therapeutic options against them. This limitation has led clinicians to reappraise the clinical application of polymyxins, an old class of cationic, cyclic polypeptide antibiotics. Polymyxins are active against selected gram-negative bacteria, including the Acinetobacter species, Pseudomonas aeruginosa, Klebsiella species, and Enterobacter species. In this article, we summarise the chemistry, pharmacokinetics, and pharmacodynamics of polymyxins and the latest understanding of their action against MDR pathogens.
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