Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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The Effect of Rotating Magnetic Field on Enterotoxin Genes Expression in Staphylococcus Aureus Strains

  • Fijalkowski, Karol (Department of Immunology, Microbiology and Physiological Chemistry, West Pomeranian University of Technology) ;
  • Peitler, Dorota (Department of Immunology, Microbiology and Physiological Chemistry, West Pomeranian University of Technology) ;
  • Zywicka, Anna (Department of Immunology, Microbiology and Physiological Chemistry, West Pomeranian University of Technology) ;
  • Rakoczy, Rafal (Department of Chemical Engineering, West Pomeranian University of Technology)
  • Received : 2016.01.29
  • Accepted : 2016.03.08
  • Published : 2016.03.31
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Abstract

Staphylococcus aureus cultures exposed to rotating magnetic field (RMF) were studied in order to analyse the possible induced changes in staphylococcal enterotoxin genes (se) expression. Liquid cultures of S. aureus strains carrying different se were exposed to the RMF of magnetic frequency 50 Hz and magnetic induction 34 mT for 10 h at $37^{\circ}C$. Three time points of bacterial growth cycle were considered for RNA extractions. Gene expression analyses were evaluated using real-time quantitative PCR method. The present study confirmed, that the RMF can stimulate the growth rate of S. aureus cultures in comparison to the unexposed controls, while the stimulation is not strain dependent. The studies have also shown, that the RMF, depending on the exposure time but regardless the bacterial strain, can influence on the expression of various se. In general, except for sea, as a result of bacterial exposure to the RMF through subsequent growth phases, the expression of se decreased, reaching the values below results recorded for unexposed controls. In the case of sea expression remained at a lower level as compared to the control, regardless the time of exposition.

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References

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