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Updated: Jul 31, 2026
10:07
High-throughput Screening for Small-molecule Modulators of Inward Rectifier Potassium Channels
Published on: January 27, 2013
Summary
The mutant prevention concentration (MPC) indicates antibiotic potency. Some fluoroquinolones may prevent resistant mutant selection when used alone, extending antibiotic lifespan.
Area of Science:
- Microbiology
- Pharmacology
- Infectious Diseases
Background:
- The mutant prevention concentration (MPC) is a novel metric for antibiotic potency.
- It defines the drug concentration threshold above which microbes require two simultaneous resistance mutations to grow.
Discussion:
- Some C-8-methoxy fluoroquinolone-pathogen combinations exhibit MPC values lower than achievable human serum concentrations with standard dosing.
- This suggests a potential for these fluoroquinolones to significantly inhibit the emergence of resistant mutants during monotherapy.
Key Insights:
- Antibiotic compounds failing to meet the MPC-pharmacokinetic criterion risk enriching resistant mutants if used as monotherapy.
- Strategic classification of fluoroquinolones for monotherapy versus combination therapy is crucial.
Outlook:
- Appropriate administration based on MPC-pharmacokinetic properties may prolong the clinical utility of fluoroquinolones.
- Further clinical investigation is warranted to validate these findings.
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