Antibiotic and biocide resistance in bacteria

Area of Science:

• Microbiology
• Molecular Biology
• Pharmacology

Background:

• Antibiotic resistance in bacteria presents a significant and escalating therapeutic challenge.
• Bacteria employ diverse strategies to evade antibiotic action, including reduced drug penetration, enzymatic inactivation, target modification, and active efflux.
• Mechanisms of biocide resistance are less understood, though cellular impermeability is recognized as a key factor.

Purpose of the Study:

• To explore the multifaceted mechanisms of bacterial resistance to antibiotics.
• To investigate the less understood mechanisms of bacterial resistance to biocides.
• To examine potential links between antibiotic resistance and biocide resistance in bacteria.

Main Methods:

• Review of established mechanisms of antibiotic resistance, including intrinsic and acquired resistance pathways.
• Analysis of known and potential mechanisms of biocide resistance, focusing on cellular impermeability.
• Examination of studies investigating plasmid-mediated efflux and associations between antibiotic and biocide resistance.

Main Results:

• Antibiotic resistance involves multiple pathways: reduced drug uptake, enzymatic degradation, target alteration, and efflux pumps.
• Cellular impermeability is a primary mechanism in biocide resistance.
• While plasmid-mediated efflux of antiseptics is observed in resistant Staphylococcus aureus, its clinical significance is unclear. Associations between antibiotic and biocide resistance in Gram-negative bacteria are noted but lack definitive genetic linkage conclusions.

Conclusions:

• Bacterial resistance to antibiotics is complex, involving various intrinsic and acquired mechanisms.
• Cellular impermeability is a significant factor in biocide resistance.
• Further research is needed to clarify the role of efflux mechanisms and genetic linkages in combined antibiotic and biocide resistance.