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How antibiotics cause antibiotic resistance
1Department of Plant and Microbial Sciences, Private Bag 4800, University of Canterbury, Christchurch, New Zealand.
Abstract:
Antimicrobial agents are approaching the end of their effectiveness. The prevailing drug development strategy is based on a presumption that results in resistance: that disease can be cured by exploitation of the vulnerabilities in microbial reproduction. Although some did predict the evolution of resistance to such drugs, the mechanisms by which genes conferring resistance have spread was not predicted. The author argues that the mechanism of spread is a consequence of the chemotherapeutics themselves acting on the evolution of pathogens, and that for future drugs to remain effective they must avoid such effects.It is thus not the individual who forms language; it is the language which forms the individual. -Alberto to Sophie in Sophie's World [Gaarder, J. (1995) Phoenix House, London]
Insights
Antimicrobial resistance is a growing threat due to how drugs drive pathogen evolution. Future antimicrobial drugs must be designed to avoid accelerating this resistance for continued effectiveness.
Area of Science:
- Microbiology
- Evolutionary Biology
- Pharmacology
Background:
- Antimicrobial agents are losing effectiveness globally.
- Current drug development presumes targeting microbial vulnerabilities, inadvertently driving resistance.
- The spread of resistance genes has occurred through unpredicted mechanisms.
Purpose of the Study:
- To analyze the mechanisms by which antimicrobial resistance genes spread.
- To propose a new strategy for developing future antimicrobial drugs that remain effective.
Main Methods:
- The study reviews existing literature on antimicrobial resistance.
- It analyzes the evolutionary impact of chemotherapeutics on pathogens.
- It discusses the implications for future drug design.
Main Results:
- Antimicrobial resistance spread is driven by the drugs themselves, influencing pathogen evolution.
- The mechanisms of gene spread were not adequately predicted by prevailing strategies.
- Chemotherapeutics actively shape the evolutionary trajectory of pathogens.
Conclusions:
- Future antimicrobial drug development must account for and mitigate the evolutionary effects of the drugs on pathogens.
- Designing drugs that do not promote resistance is crucial for sustained antimicrobial efficacy.
- A paradigm shift in antimicrobial development is necessary to combat the escalating resistance crisis.