Stenotrophomonas Infections and Antimicrobial Resistance
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Questions and Answers

What is the family to which Stenotrophomonas belongs?

  • Neisseriaceae
  • Pseudomonadaceae
  • Enterobacteriaceae
  • Xanthomonadaceae (correct)
  • What is the primary reason for the low likelihood of outbreaks of Stenotrophomonas?

  • Low pathogenic potential in humans
  • Worldwide distribution of the bacterium
  • Ability to colonize the oropharynx, skin, and feces
  • Antimicrobial resistance profile of the bacterium (correct)
  • What is the characteristic of Stenotrophomonas in terms of glucose fermentation?

  • Does not ferment glucose (correct)
  • Ferments glucose only in the presence of oxygen
  • Ferments glucose aerobically
  • Ferments glucose anaerobically
  • In which of the following environments is Stenotrophomonas commonly found?

    <p>Both in soil and water</p> Signup and view all the answers

    What is the significance of Stenotrophomonas in patients with cystic fibrosis?

    <p>It is a common colonizer of the oropharynx, skin, and feces</p> Signup and view all the answers

    What is a reported mode of transmission of Stenotrophomonas?

    <p>Contamination of the reagent water supply</p> Signup and view all the answers

    What is the main focus of this review?

    <p>The different aspects of respiratory Stenotrophomonas species infections</p> Signup and view all the answers

    What is the significance of Stenotrophomonas maltophilia in recent years?

    <p>It has become one of the most relevant pathogens causing respiratory infections</p> Signup and view all the answers

    What complication has arisen from the recent reports of carbapenem-resistant S.maltophilia strains?

    <p>Complicated treatment of patients and high mortality</p> Signup and view all the answers

    What has been determined for the first Stenotrophomonas species isolated from a cystic fibrosis patient?

    <p>The whole genome shotgun sequence</p> Signup and view all the answers

    What is the current state of evidence for the use of new antimicrobial drugs?

    <p>There is a general lack of evidence</p> Signup and view all the answers

    What is presented in this review regarding classical antimicrobial pharmacology?

    <p>Recent re-examination</p> Signup and view all the answers

    What is discussed in this review regarding S.maltophilia strains?

    <p>Both classical and pan-resistant strains</p> Signup and view all the answers

    What is supported by the genetic information contained in the validated genes of S.maltophilia strain K279a?

    <p>The molecular mechanisms involved in the pathogenesis and virulence</p> Signup and view all the answers

    Study Notes

    Introduction to Stenotrophomonas Infections

    • Stenotrophomonas species infections, particularly respiratory infections, require more comprehensive and reliable studies on the use of new antimicrobial drugs.
    • This review highlights the resistance determinants of S.maltophilia, re-examines classical antimicrobial pharmacology, and discusses optimal antibiotic doses and mortality.
    • Stenotrophomonas maltophilia is a relevant pathogen causing respiratory infections, with recent reports of carbapenem-resistant strains worldwide, leading to high mortality.

    Overview of Stenotrophomonas Bacteria

    • The whole genome shotgun sequence of S.maltophilia strain K279a has been determined, providing insights into the molecular mechanisms of pathogenesis and virulence.
    • Identified genes encode for microbial secretion systems, regulatory proteins, and mechanisms involved in bacterial adhesion, colonization, and intracellular growth.
    • Stenotrophomonas is an aerobic, nonfermentative, lactose-negative, oxidase-negative, catalase-positive, non-glucose-fermenting Gram-negative bacillus in the family Xanthomonadaceae.
    • Stenotrophomonas has a worldwide distribution, is present in soil and water, and has a low pathogenic potential in humans.
    • It is a colonizer of the oropharynx, skin, and feces, with an isolation rate ranging from 6.1% to over 90% in patients with cystic fibrosis.
    • Contamination of the reagent water supply or transmission/outbreaks in healthcare facilities have been reported.

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    Description

    This quiz covers the antimicrobial resistance of Stenotrophomonas species, particularly in respiratory infections, and the optimal use of antibiotics. It also highlights the importance of understanding the pharmacology of these drugs.

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