Antimicrobial Resistance Patterns in Wound Infections
Summary
Antimicrobial resistance in wound infections poses a major global health challenge, undermining the efficacy of standard treatments and extending patient recovery times. Wounds provide a conducive environment for microbial colonisation and biofilm formation, which shield bacteria from host defences and antimicrobial agents. Historically dominated by Staphylococcus aureus, especially methicillin-resistant strains, the spectrum now encompasses multidrug-resistant Gram-negative bacilli such as Pseudomonas aeruginosa, Acinetobacter spp. and extended-spectrum β-lactamase-producing Enterobacteriaceae. Resistance mechanisms include enzymatic drug inactivation, target site modification, efflux pump overexpression and altered membrane permeability, often mediated by mobile genetic elements that facilitate rapid dissemination. Surveillance studies reveal marked regional variation in resistance profiles, emphasising the necessity for local antibiograms to guide empirical therapy. In response, research is focusing on rapid diagnostics, antimicrobial stewardship, novel therapeutics such as anti-biofilm agents and bacteriophage-derived enzymes, and advanced wound dressings that release microbicidal substances. Integrating these innovations with infection prevention strategies is essential to curb the rise of resistant wound pathogens and preserve the utility of existing antibiotics.
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Antimicrobial Resistance Patterns in Wound Infections publication trend
The graph below shows the total number of articles in antimicrobial resistance patterns in wound infections across all publications each year (not limited to Nature Index journals).
Technical terms
Antimicrobial resistance: The ability of microorganisms to survive or proliferate despite exposure to drugs designed to inhibit them.
Biofilm: A structured community of microbial cells encased in a self-produced polymeric matrix that adheres to surfaces and enhances drug tolerance.
MRSA: Methicillin-resistant Staphylococcus aureus, a form of S. aureus that resists β-lactam antibiotics via altered penicillin-binding proteins.
ESBLs: Extended-spectrum β-lactamases, enzymes that confer resistance to third-generation cephalosporins by hydrolysing their β-lactam ring.
Empirical therapy: Initial antimicrobial treatment based on clinical assessment and local resistance data prior to definitive culture results.
References
- Epidemiology of antibiotic-resistant wound infections from six countries in Africa. BMJ Global Health (2018).
- Antimicrobial-Resistant Bacteria in Infected Wounds, Ghana, 2014 - Volume 24, Number 5—May 2018 - Emerging Infectious Diseases journal - CDC. Emerging Infectious Diseases (2018).
- Pattern of Bacterial Pathogens and Their Susceptibility Isolated from Surgical Site Infections at Selected Referral Hospitals, Addis Ababa, Ethiopia. International Journal of Microbiology (2016).
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