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Toxin involvement in methicillin-resistant Staphylococcus aureus enteritis in gastroenterological surgery

Y Takesue1, T Yokoyama, T Kodama

  • 1First Department of Surgery, Hiroshima University School of Medicine, Japan.

Gastroenterologia Japonica
|December 1, 1991
PubMed

Insights

Methicillin-resistant Staphylococcus aureus (MRSA) strains, particularly type II, frequently produce toxic shock syndrome toxin-1 (TSST-1) and staphylococcal enterotoxins (SE). These toxins, especially SEA and SEC, are implicated in postoperative enteritis and toxic shock syndrome-like symptoms.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Gastroenterology

Background:

  • Postoperative enteritis caused by Methicillin-resistant Staphylococcus aureus (MRSA) is a clinical concern.
  • Understanding the toxin profiles of MRSA strains is crucial for elucidating disease pathogenesis.

Purpose of the Study:

  • To investigate the production of toxic shock syndrome toxin-1 (TSST-1) and staphylococcal enterotoxins (SE) by MRSA isolates.
  • To clarify the pathogenesis of postoperative MRSA enteritis.

Main Methods:

  • Analysis of TSST-1 and SE production in clinical MRSA isolates.
  • Comparison of toxin profiles between different MRSA strain types (e.g., type II and type IV).

Main Results:

  • A significant difference in TSST-1 production was observed between type II (68.8%) and type IV (4.2%) MRSA strains.
  • Type II MRSA strains producing staphylococcal enterotoxin C (SEC) also produced TSST-1.
  • Strains producing staphylococcal enterotoxin A (SEA) were potent SE producers linked to enteritis.

Conclusions:

  • MRSA strains, particularly type II, are significant producers of TSST-1 and various SEs.
  • The co-production of SEA and SEC by MRSA may lead to enteritis with toxic shock syndrome-like symptoms due to high toxin titers.

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