Stenotrophomonas maltophilia: Significant contemporary hospital pathogen - review

O Nyc1, J Matejková

  • 1Department of Clinical Microbiology, 2nd Faculty of Medicine, Charles University, 150 06, Prague, Czech Republic.

Insights

Stenotrophomonas maltophilia is an opportunistic pathogen causing infections in hospitalized patients. Its increasing antibiotic resistance, especially to trimethoprim-sulfamethoxazole, limits treatment options, necessitating improved infection control and antimicrobial strategies.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Antimicrobial Resistance

Background:

  • Stenotrophomonas maltophilia (Sm) is an opportunistic pathogen frequently identified in hospital settings.
  • Its prevalence is linked to invasive medical procedures and antibiotic use.
  • Sm infections are often associated with biofilms, complicating treatment.

Purpose of the Study:

  • To highlight the clinical significance of Stenotrophomonas maltophilia as an opportunistic pathogen.
  • To underscore the challenges posed by its intrinsic and acquired antibiotic resistance.
  • To emphasize the need for enhanced infection control and rational antimicrobial strategies.

Main Methods:

  • Literature review on Stenotrophomonas maltophilia epidemiology and resistance patterns.
  • Analysis of clinical implications of Sm infections, particularly in immunocompromised patients.
  • Discussion of current and future treatment challenges and preventive measures.

Main Results:

  • Stenotrophomonas maltophilia is a growing concern in healthcare-associated infections.
  • High levels of intrinsic and acquired antibiotic resistance, including to trimethoprim-sulfamethoxazole, are evident.
  • Biofilm formation is a key factor in Sm pathogenicity and treatment resistance.

Conclusions:

  • Effective nosocomial infection control and judicious antibiotic use are crucial.
  • Development of novel antimicrobial agents and treatment strategies is necessary.
  • Optimized selection and testing of antimicrobials are vital for managing Sm infections.

Related Concept Videos

Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
Rapid Identification of Pathogens01:25

Rapid Identification of Pathogens

MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...
Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
Bacterial Meningitis II: Pathophysiology01:26

Bacterial Meningitis II: Pathophysiology

Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...
Bacterial Phylum Bacteroidota01:26

Bacterial Phylum Bacteroidota

The phylum Bacteroidota includes over 700 species classified into four primary orders: Bacteroidales, Cytophagales, Flavobacteriales, and Sphingobacteriales. These gram-negative, non-sporulating rods exhibit saccharolytic capabilities and can be aerobic or fermentative, encompassing obligate aerobes, facultative aerobes, and obligate anaerobes. Many species display gliding motility, though some are nonmotile or use flagella. The genus Bacteroides is well-studied due to its significant role in...