[Evolution in the antibiotic susceptibility and resistance]

Area of Science:

• Microbiology
• Infectious Diseases
• Pharmacology

Context:

• Antibiotic resistance is a major public health concern, exacerbated by global travel and overuse of antibiotics.
• Resistant pathogens, particularly Gram-positive bacteria like Staphylococci, cause significant mortality and morbidity.
• The emergence of multi-drug resistant strains necessitates novel therapeutic strategies.

Purpose:

• To review the current landscape of antibiotic resistance in Gram-positive pathogens.
• To highlight the challenges posed by multi-drug resistant bacteria, including coagulase-negative Staphylococci (CoNS).
• To discuss emerging therapeutic options and new antimicrobial molecules.

Summary:

• Gram-positive bacteria, including Staphylococci, are increasingly resistant to established antibiotics.
• Coagulase-negative Staphylococci (CoNS) are significant nosocomial pathogens, with high rates of oxacillin and multi-drug resistance.
• The declining efficacy of glycopeptides underscores the urgent need for alternative treatments.

Impact:

• This review emphasizes the critical need for developing new antimicrobial agents to combat resistant Gram-positive infections.
• It highlights the clinical relevance of emerging therapies such as linezolid, tygecycline, daptomycin, ceftobiprole, and dalbavancin.
• Understanding resistance mechanisms and evaluating new drugs is crucial for effective patient management.