Bacterial Efflux Pump Inhibitors Lowering Antibiotic MIC
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Solution Overview
Problem
The increasing prevalence of antibiotic-resistant bacterial strains due to mechanisms such as efflux pumps threatens the clinical utility of antibacterial therapy, leading to higher morbidity, mortality, and treatment costs in hospitals.
Innovation Solution
Compounds of formula I, which inhibit bacterial efflux pumps when combined with known antibiotics, lower the minimum inhibitory concentration required to inhibit bacterial cell growth, potentially by inhibiting efflux pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If efflux pumps are used by bacteria, then antibiotic resistance is enhanced, but the minimum inhibitory concentration of antibiotics must be increased to overcome resistance
Solution Approach 1:
The patent introduces efflux pump inhibitors as intermediary substances that mediate between the antibiotic and the bacterial efflux pump. These inhibitors bind to the efflux pump and prevent it from expelling the antibiotic, thereby allowing the antibiotic to effectively inhibit bacterial growth at lower concentrations without directly killing the bacteria themselves.
Solution Approach 2:
The efflux pump inhibitors perform preliminary anti-action by preemptively blocking the efflux pump's ability to expel antibiotics before the antibiotic can be removed from the bacterial cell. This preliminary inhibition ensures that when the antibiotic is introduced, it remains effective inside the cell, reversing the resistance mechanism before it can take effect.
2Reliability
If multiple resistance mechanisms are combined, then bacterial survival is improved, but treatment complexity and cost increase
Solution Approach 1:
The patent segments the resistance mechanism by targeting and inhibiting the efflux pump component separately from the antibiotic's action. Instead of attempting to overcome multiple resistance mechanisms simultaneously with complex treatment regimens, the efflux pump inhibitor isolates and blocks this specific resistance pathway, simplifying the overall treatment approach while maintaining effectiveness against bacteria with multiple resistance mechanisms.
Data Source
AI summary
Disclosed herein are compounds of formula I and salts thereof. Also disclosed are compositions comprising compounds of formula I and methods using compounds of formula I.