Related Experiment Video

Updated: Feb 22, 2026

Author Spotlight: Accelerating Diagnostic Accuracy with Direct Identification of Gram-Negatives from Blood Culture Bottles
09:07

Author Spotlight: Accelerating Diagnostic Accuracy with Direct Identification of Gram-Negatives from Blood Culture Bottles

Published on: May 24, 2024

1.5K

Rapid Detection of Staphylococcus aureus and Related Species Isolated from Food, Environment, Cosmetics, a Medical

Irshad M Sulaiman1, Pratik Banerjee2, Ying-Hsin Hsieh1

  • 1U.S. Food and Drug Administration, Southeast Food and Feed Laboratory, Microbiological Sciences Branch, 60 Eighth St NE, Atlanta, GA 30309, USA.

Journal of AOAC International
|September 16, 2017
PubMed

Insights

Matrix-assisted laser desorption ionization-time-of-flight (MALDI-TOF) mass spectrometry rapidly identified all Staphylococcus species isolates tested. This method offers a significant improvement over traditional techniques for identifying these common human pathogens.

Area of Science:

  • Microbiology
  • Bacteriology
  • Medical Diagnostics

Background:

  • Staphylococcus species are common human pathogens causing diverse infections, from skin issues to life-threatening conditions like sepsis.
  • The rise of antibiotic-resistant strains, such as methicillin-resistant Staphylococcus aureus, poses a significant global health challenge.
  • Traditional identification methods like sequence typing are time-consuming and require high-quality DNA.

Purpose of the Study:

  • To evaluate the VITEK MS system for rapid and accurate identification of Staphylococcus species.
  • To compare the performance of VITEK MS with the VITEK 2 system and 16S ribosomal RNA gene sequencing.
  • To assess the utility of VITEK MS for identifying Staphylococcus isolates from various sources.

Main Methods:

  • Analysis of 50 Staphylococcus isolates (47 environmental/clinical, 3 reference strains) using bioMérieux VITEK MS and VITEK 2 systems.
  • 16S ribosomal RNA gene sequencing was employed for confirmation and comparison of species identification.
  • Isolates were sourced from food, environment, clinical samples, cosmetics, and medical devices.

Main Results:

  • The VITEK MS system successfully identified all 50 Staphylococcus spp. isolates tested.
  • The VITEK 2 system failed to identify one isolate.
  • VITEK MS provided rapid and accurate species identification, confirmed by 16S rRNA gene sequencing.

Conclusions:

  • VITEK MS is a reliable and rapid method for identifying Staphylococcus species.
  • This technology can significantly aid in the timely diagnosis and management of staphylococcal infections.
  • VITEK MS is a valuable tool for identifying Staphylococcus isolates of public health importance.

More Related Videos

Identification of Rare Bacterial Pathogens by 16S rRNA Gene Sequencing and MALDI-TOF MS06:34

Identification of Rare Bacterial Pathogens by 16S rRNA Gene Sequencing and MALDI-TOF MS

Published on: July 11, 2016

20.8K
Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria14:04

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

25.2K

Related Concept Videos

MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
7.1K
Methods of Classification and Identification01:28

Methods of Classification and Identification

Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...
1.3K
Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
759