Management of Methicillin-Resistant Staphylococcus aureus Infections
Summary
Methicillin-resistant Staphylococcus aureus (MRSA) remains a formidable challenge in both hospital and community settings due to its capacity for rapid acquisition of resistance determinants and for forming persistent biofilms on tissues and indwelling devices. Effective management demands prompt microbiological diagnosis, tailored antibiotic therapy and, where necessary, surgical debridement or device removal. First-line agents typically include glycopeptides (vancomycin, teicoplanin) and lipopeptides (daptomycin), with treatment choice guided by site of infection, drug pharmacodynamics and patient comorbidities. Linezolid, a synthetic oxazolidinone, is increasingly used for its excellent tissue penetration, particularly in lung and skin-soft tissue infections. Adjunctive strategies range from combination regimens employing β-lactams to enhance bactericidal activity, to exploration of small-molecule adjuvants that disrupt biofilm architecture. Beyond antimicrobials, immunomodulatory approaches are emerging to correct host-pathogen imbalances, and novel diagnostics—such as rapid molecular resistance profiling—are reshaping early therapeutic decisions. Prevention remains a cornerstone of control, encompassing rigorous infection-control practices, decolonisation protocols and surveillance to limit MRSA transmission in both healthcare and community environments.
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Management of Methicillin-Resistant Staphylococcus aureus Infections publication trend
The graph below shows the total number of articles in management of methicillin-resistant staphylococcus aureus infections across all publications each year (not limited to Nature Index journals).
Technical terms
Methicillin-Resistant Staphylococcus aureus (MRSA): A strain of S. aureus resistant to β-lactam antibiotics due to altered penicillin-binding proteins.
Bacteremia: The presence of bacteria in the bloodstream, often leading to systemic infection and sepsis.
Biofilm: A structured community of bacteria encased in a self-produced polymer matrix adherent to surfaces, enhancing antimicrobial tolerance.
Daptomycin: A cyclic lipopeptide antibiotic that disrupts Gram-positive bacterial cell membranes in a calcium-dependent manner.
Linezolid: An oxazolidinone antibiotic active against Gram-positive pathogens, inhibiting protein synthesis by binding the 50S ribosomal subunit.
Synergy: The enhanced antimicrobial effect observed when two or more agents used in combination achieve a greater effect than the sum of their separate actions.
Transcriptomics: The large-scale study of RNA transcripts to elucidate gene expression patterns under specific conditions.
Interleukin-10 (IL-10): An anti-inflammatory cytokine that downregulates immune responses and can influence infection outcomes.
References
- Integrated transcriptomic analysis reveals immune signatures distinguishing persistent versus resolving outcomes in MRSA bacteremia. Frontiers in Immunology (2024).
- Effectiveness and Safety of Linezolid Versus Vancomycin, Teicoplanin, or Daptomycin against Methicillin-Resistant Staphylococcus aureus Bacteremia: A Systematic Review and Meta-Analysis. Antibiotics (2023).
- Antimicrobial Synergistic Effects of Linezolid and Vancomycin with a Small Synthesized 2-Mercaptobenzothiazole Derivative: A Challenge for MRSA Solving. Molecules (2023).
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