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Methicillin-Resistant Staphylococcus aureus in Urinary Tract Infections: A Comprehensive Review With Insights From a
Gaurav Kumar1, Snehanshu Shukla1, Sheetal Agarwal2
1Department of Microbiology, Rajarshi Dashrath Autonomous State Medical College, Ayodhya, Ayodhya, IND.
Abstract:
Methicillin-resistant Staphylococcus aureus (MRSA) remains a major global public health concern, with urinary tract infections (UTIs) representing a less common but clinically important manifestation. Although Gram-negative bacteria remain the predominant uropathogens, increasing MRSA detection in urinary isolates presents diagnostic and therapeutic challenges, particularly in high-risk groups such as catheterised or hospitalised patients. This review consolidates global evidence published between 2000 and 2025, focusing on the epidemiology, molecular characteristics, antimicrobial resistance, diagnostics, and management of MRSA UTIs. Reported prevalence ranges from 2% to over 10%, varying with geography and patient factors. Key virulence mechanisms include urine-induced gene expression, copper resistance, metabolic adaptability, and biofilm formation, which enhance persistence and treatment failure risk. Resistance to β-lactams, fluoroquinolones, and aminoglycosides is widespread, whereas vancomycin and linezolid remain reliably effective. Advances in molecular diagnostics, such as PCR and sequencing, have improved detection accuracy and supported antimicrobial stewardship. MRSA, though relatively uncommon, poses significant risks to vulnerable populations and exemplifies broader global antimicrobial resistance trends. Strengthened surveillance, rapid diagnostics, judicious empiric therapy, and stewardship programs, integrated within a One Health framework, are essential to reduce the growing burden of MRSA urinary infections worldwide.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) causes urinary tract infections (UTIs), posing challenges due to widespread resistance. Effective management requires enhanced surveillance and rapid diagnostics for vulnerable patients.
Area of Science:
- Infectious Diseases
- Microbiology
- Public Health
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) is a significant global health threat.
- Urinary tract infections (UTIs) are an increasing, though less common, manifestation of MRSA.
- High-risk groups like catheterized or hospitalized patients face particular challenges.
Purpose of the Study:
- To review global evidence on MRSA UTIs from 2000-2025.
- To focus on epidemiology, molecular characteristics, resistance, diagnostics, and management.
- To highlight challenges and strategies for combating MRSA UTIs.
Main Methods:
- Systematic review of global literature (2000-2025).
- Analysis of prevalence, virulence factors, and antimicrobial resistance patterns.
- Evaluation of diagnostic advancements and management strategies.
Main Results:
- MRSA UTI prevalence varies (2%-10%+) by geography and patient factors.
- Virulence mechanisms include gene expression, copper resistance, adaptability, and biofilm formation.
- Resistance is high for common antibiotics, but vancomycin and linezolid remain effective.
Conclusions:
- MRSA UTIs are a growing concern, especially in vulnerable populations.
- Molecular diagnostics and antimicrobial stewardship are crucial for effective management.
- A One Health approach is essential to reduce the global burden of MRSA urinary infections.
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