Emergence and spread of cfr-mediated multiresistance in staphylococci: an interdisciplinary challenge

Area of Science:

• Microbiology
• Molecular Biology
• Antimicrobial Resistance

Background:

• Methylation of 23S rRNA at A2503 in staphylococci confers resistance to multiple antibiotic classes.
• The cfr gene, responsible for this methylation, is plasmid-borne and transferable.
• Emergence of cfr in various staphylococcal species, including Staphylococcus aureus, poses a significant public health threat.

Purpose of the Study:

• To investigate the prevalence and dissemination of the cfr gene in staphylococci.
• To highlight the implications of cfr-mediated antibiotic resistance for human and veterinary medicine.
• To emphasize the need for timely detection and prevention strategies.

Main Methods:

• Review of existing literature on cfr gene distribution and mechanisms of resistance.
• Analysis of epidemiological data on staphylococcal infections and antibiotic resistance patterns.
• Discussion of the clinical and veterinary significance of cfr-mediated resistance.

Main Results:

• The cfr gene confers resistance to oxazolidinones, phenicols, streptogramin compounds, lincosamidins, and pleuromutilins.
• cfr has been detected in coagulase-negative staphylococci and Staphylococcus aureus, including livestock-associated strains (ST398) and nosocomial isolates.
• Dissemination of cfr has been observed across different geographical regions and settings.

Conclusions:

• The spread of the cfr gene represents a serious challenge to the efficacy of important antibiotics like linezolid.
• Effective surveillance and control measures are crucial to prevent further dissemination of cfr-mediated resistance in both clinical and agricultural environments.
• Preserving the activity of current antibiotics requires a concerted effort in both human and veterinary medicine.