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Updated: Jun 28, 2026

Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing
Published on: July 7, 2020
Do we still need the aminoglycosides?
Emanuele Durante-Mangoni1, Alexandros Grammatikos, Riccardo Utili
1Unit of Infectious & Transplant Medicine, 2nd University of Naples, Monaldi Hospital, Naples, Italy.
Abstract:
Since the introduction into clinical practice of the aminoglycoside class of antibiotics, a number of other antimicrobial agents with improved safety profile have entered the market. Studies have failed to demonstrate the superiority of aminoglycoside-containing regimens in a number of infection settings. This has raised doubts regarding the actual clinical utility of aminoglycosides. However, the recent emergence of infections due to Gram-negative bacterial strains with advanced patterns of antimicrobial resistance has prompted physicians to reconsider these 'old' antibacterial agents. This revived interest in the use of aminoglycosides has brought back to light the debate on the two major issues related to these compounds, namely the spectrum of antimicrobial susceptibility and toxicity. Although some of the aminoglycosides retain activity against the majority of Gram-negative clinical bacterial isolates in many parts of the world, the relatively frequent occurrence of nephrotoxicity and ototoxicity during aminoglycoside treatment make physicians reluctant to use these compounds in everyday practice. We believe that recent advances in the understanding of the effect of various dosage schedules of aminoglycosides on toxicity combined with the retained (to a considerable degree) activity against the majority of Gram-negative bacterial isolates make this class of antibiotics still valuable in today's clinical practice.
Insights
Aminoglycoside antibiotics remain valuable for treating Gram-negative bacterial infections, despite toxicity concerns. Advances in dosing strategies and retained antimicrobial activity support their continued clinical use.
Area of Science:
- Infectious Diseases
- Pharmacology
- Microbiology
Background:
- Aminoglycoside antibiotics have been in clinical use for decades.
- Newer antibiotics with better safety profiles have emerged, questioning aminoglycoside utility.
- Rising antimicrobial resistance in Gram-negative bacteria necessitates re-evaluation of older agents.
Purpose of the Study:
- To reassess the clinical value of aminoglycoside antibiotics in light of emerging resistance.
- To address the ongoing debate concerning aminoglycoside antimicrobial spectrum and toxicity.
- To explore the impact of recent advances in understanding aminoglycoside dosing and safety.
Main Methods:
- Review of existing literature on aminoglycoside efficacy and toxicity.
- Analysis of current trends in Gram-negative bacterial resistance patterns.
- Evaluation of updated knowledge on aminoglycoside pharmacokinetic/pharmacodynamic properties and dosing.
Main Results:
- Aminoglycosides retain significant activity against many Gram-negative bacterial isolates globally.
- Nephrotoxicity and ototoxicity remain significant concerns limiting routine use.
- Understanding of how different dosage schedules affect toxicity has advanced.
Conclusions:
- Despite toxicity, aminoglycosides remain a valuable therapeutic option for Gram-negative infections.
- Optimized dosing strategies can mitigate risks associated with aminoglycoside use.
- The retained antimicrobial spectrum of aminoglycosides is crucial in the era of increasing resistance.
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