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Published on: March 2, 2020
Molecular mechanisms of fluoroquinolone resistance in Klebsiella
Yun-Liang Yang1, Tsai-Ling Lauderdale, Hsiu-Jung Lo
1Division of Clinical Research, National Health Research Institutes, 128, Section 2 Yen-Chiu-Yuan Road, Taipei 11529, Taiwan, ROC.
Abstract:
Klebsiella are well-recognized community and nosocomial pathogens responsible for septicemias, urinary tract infections, pneumonia, and soft tissue infections. The emergence of multi-drug resistant Klebsiella is becoming a global concern. Since fluoroquinolones are excellent antibiotics for clinical therapy of complicated infections, their consumptions have increased rapidly. Coincidental with the increased usage of fluoroquinolones, the incidences of drug resistance have increased, which highlights the need for understanding the molecular mechanisms of fluoroquinolone resistance. Alterations in targets and reduction of intracellular drug accumulation are two major mechanisms involved in fluoroquinolone resistance. This review focuses on the mechanisms of action of fluoroquinolones and molecular mechanisms of drug resistance, including known and proposed ones, and the discussion on clinical impact of multi-drug resistance in Klebsiella.
Insights
Multi-drug resistant Klebsiella pose a global health threat. Understanding fluoroquinolone resistance mechanisms is crucial for effective treatment of Klebsiella infections.
Area of Science:
- Microbiology
- Infectious Diseases
- Pharmacology
Background:
- Klebsiella species are significant pathogens causing various infections.
- The rise of multi-drug resistant (MDR) Klebsiella is a growing global concern.
- Fluoroquinolones are vital antibiotics, but their increased use correlates with rising resistance.
Purpose of the Study:
- To review the mechanisms of action of fluoroquinolones.
- To elucidate the molecular mechanisms underlying fluoroquinolone resistance in Klebsiella.
- To discuss the clinical implications of MDR Klebsiella.
Main Methods:
- Literature review of fluoroquinolone action.
- Analysis of molecular mechanisms of resistance.
- Discussion of clinical impact of MDR Klebsiella.
Main Results:
- Fluoroquinolone resistance involves target alterations and reduced intracellular accumulation.
- Multiple molecular mechanisms contribute to resistance.
- MDR Klebsiella presents significant challenges in clinical settings.
Conclusions:
- Understanding fluoroquinolone resistance mechanisms is essential for combating MDR Klebsiella.
- Further research into resistance pathways is needed.
- Effective therapeutic strategies must address the challenge of antimicrobial resistance.
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