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Methicillin-Resistant Staphylococcus aureus ST80 Clone: A Systematic Review.

Assia Mairi1, Abdelaziz Touati1, Jean-Philippe Lavigne2

  • 1Laboratoire d'Ecologie Microbienne, FSNV, Université de Bejaia, Bejaia 06000, Algeria.

Toxins
|February 21, 2020
PubMed
Summary

The methicillin-resistant Staphylococcus aureus (MRSA)-ST80 clone, once prevalent, shows a declining proportion in recent years. Most MRSA-ST80 strains were PVL-positive and spa-type t044.

Keywords:
MRSAPanton–Valentine leukocidinST80 clonedeclineepidemicextra-humanhumanworldwide diffusion

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Area of Science:

  • Microbiology
  • Epidemiology
  • Molecular Biology

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant global health threat.
  • The ST80 clone has been a notable MRSA lineage, characterized by specific genetic markers and resistance profiles.
  • Understanding the epidemiological trends and molecular characteristics of MRSA clones is crucial for effective control strategies.

Purpose of the Study:

  • To review and characterize the MRSA-ST80 clone.
  • To assess its proportion among isolated MRSA strains, focusing on PVL production, spa-typing, antibiotic resistance, and virulence.
  • To analyze the temporal trends and geographical distribution of the MRSA-ST80 clone.

Main Methods:

  • A systematic literature review was conducted for studies published between January 1, 2000, and August 31, 2019.
  • Data on MRSA-ST80 isolates, including country, sampling period, source, MRSA proportions, antibiotic resistance, PVL production, virulence genes, and spa types, were extracted from 103 articles.
  • Data were compiled and analyzed using an Excel database.

Main Results:

  • The overall proportion of the MRSA-ST80 clone has decreased in many countries recently.
  • The majority of MRSA-ST80 isolates were Panton-Valentine leukocidin (PVL) positive and belonged to spa-type t044.
  • Limited reports (six) of MRSA-ST80 were found in extra-human niches.

Conclusions:

  • The MRSA-ST80 clone, after a period of rise, appears to be declining in prevalence in numerous regions.
  • The characterization highlights the importance of spa-typing and PVL production in understanding MRSA clone epidemiology.
  • Further research is needed to monitor the evolution and spread of MRSA clones in both human and animal populations.