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Published on: March 14, 2014
[Amphotericin B: the end of an era]
A M L Oude Lashof1, B J Kullberg
1Universitair Medisch Centrum St Radboud, Nijmeegs Universitair Centrum voor Infectieziekten, afd. Algemeen Interne Geneeskunde AIG-541, Postbus 9101, 6500 HB Nijmegen.
Abstract:
For 45 years, amphotericin B has been the drug of choice for the treatment of invasive mycoses. Because of its severe toxicity, lipid-associated formulations of amphotericin B have been developed. Although comparative trials are scarce, there appears to be no convincing advantage of these new formulations in terms of efficacy. The lipid-associated amphotericins are significantly less nephrotoxic than conventional amphotericin B, although there are major differences in the infusion-related toxicity of the various lipid-associated preparations. The current armamentarium of azoles and echinocandins for the treatment of invasive mycoses has only left a very minor role for both conventional and lipid-associated amphotericin B in the treatment of a few specific, rare mycoses.
Insights
Lipid-associated amphotericin B formulations offer reduced nephrotoxicity compared to conventional amphotericin B. However, their efficacy is not clearly superior, and newer antifungals limit amphotericin B
Area of Science:
- Mycology
- Pharmacology
- Infectious Diseases
Background:
- Amphotericin B has been a primary treatment for invasive fungal infections for 45 years.
- Severe toxicity led to the development of lipid-associated formulations.
- Comparative efficacy data for lipid formulations are limited.
Discussion:
- Lipid-associated amphotericin B exhibits significantly reduced nephrotoxicity versus the conventional form.
- Infusion-related toxicities vary considerably among different lipid formulations.
- The advent of azoles and echinocandins has diminished the role of amphotericin B.
Key Insights:
- Lipid formulations of amphotericin B demonstrate improved safety profiles, particularly regarding kidney toxicity.
- Efficacy of lipid-associated amphotericin B is not definitively proven to be superior to conventional forms.
- Current antifungal options have relegated amphotericin B to niche applications.
Outlook:
- Further research is needed to clarify the comparative efficacy of lipid formulations.
- Understanding and managing infusion-related toxicities remains crucial for clinical use.
- Amphotericin B's role is likely to remain limited to specific, rare mycoses.
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