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Phenotypic Resistance to Antibiotics.

Fernando Corona1, Jose L Martinez2

  • 1Centro Nacional de Biotecnología, CSIC, Darwin 3, 28049-Madrid, Spain.

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Summary

Phenotypic resistance allows bacteria to resist antibiotics without genetic changes, often occurring in biofilms or during stationary growth. Understanding this non-inherited resistance and its link to bacterial metabolism is key for new antibiotic strategies.

Keywords:
antibiotic resistancebacterial permeabilitybiofilmpersistencephenotypic resistanceresistome

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Pharmacology

Background:

  • Antibiotic resistance typically arises from genetic alterations like gene acquisition or mutations.
  • Phenotypic resistance, a non-inherited form, occurs without genetic changes.
  • Situations like biofilm growth, stationary phase, and persistence contribute to phenotypic resistance.

Purpose of the Study:

  • To review mechanisms of phenotypic antibiotic resistance.
  • To explore the link between bacterial metabolism and antibiotic susceptibility.
  • To present strategies for combating phenotypic resistance.

Main Methods:

  • Literature review of phenotypic resistance mechanisms.
  • Analysis of studies on bacterial metabolism and antibiotic susceptibility.
  • Discussion of current and developing therapeutic strategies.

Main Results:

  • Phenotypic resistance can occur without genetic modification.
  • Bacterial metabolism significantly influences antibiotic susceptibility.
  • Global metabolic regulators can modulate resistance and susceptibility.

Conclusions:

  • Phenotypic resistance mechanisms are critical during infections and differ from laboratory findings.
  • Targeting the interplay between bacterial metabolism and antibiotic susceptibility offers novel therapeutic avenues.
  • Developing strategies to overcome phenotypic resistance is crucial for effective antibiotic treatment.