Comparison of the low-frequency magnetic field effects on bacteria Escherichia coli, Leclercia adecarboxylata and Staphylococcus aureus

FOJT, Lukáš, Luděk STRAŠÁK, Vladimír VETTERL and Jan ŠMARDA. Comparison of the low-frequency magnetic field effects on bacteria Escherichia coli, Leclercia adecarboxylata and Staphylococcus aureus. Bioelectrochemistry. 2004, vol. 2004, No 63, p. 337-341. ISSN 1567-5394.

Basic information

• Original name: Comparison of the low-frequency magnetic field effects on bacteria Escherichia coli, Leclercia adecarboxylata and Staphylococcus aureus
• Name in Czech: Srovnání působení nízkofrekvenčního magnetického pole na bakterie Escherichia coli, Leclercia adecarboxylata a Staphylococcus aureus
• Authors: FOJT, Lukáš (203 Czech Republic), Luděk STRAŠÁK (203 Czech Republic), Vladimír VETTERL (203 Czech Republic, guarantor) and Jan ŠMARDA (203 Czech Republic).
• Edition: Bioelectrochemistry, 2004, 1567-5394.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10610 Biophysics
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 2.261
• RIV identification code: RIV/00216224:14310/04:00011203
• Organization unit: Faculty of Science
• UT WoS: 000221786900062
• Keywords in English: Low-frequency electromagnetic field; ELF magnetic fields; Bacteria; CFU number; Escherichia coli; Leclercia adecarboxylata; Staphylococcus aureus
• Tags: bacteria, CFU number, ELF magnetic fields, Escherichia coli, Leclercia adecarboxylata, Low-frequency electromagnetic field, Staphylococcus aureus

Abstract

This work studies biological effects of low-frequency electromagnetic fields. We have exposed three different bacterial strains - Escherichia coli, Leclercia adecarboxylata and Staphylococcus aureus to the magnetic field (t < 30 min, Bm=10 mT, f = 50 Hz) in order to compare their viability (number of colony-forming units (CFU)). We have measured the dependence of CFU on time of exposure and on the value of the magnetic field induction Bm. Viability decreases with longer exposure time and/or higher induction Bm for all strains, but the quantity of the effect is strain-dependent. The highest decrease of the viability and the biggest magnetic field effect was observed with E. coli. The smallest magnetic field effect appears for S. aureus. From the measurement of the growth dynamics we have concluded that the decrease of the CFU starts immediately after the magnetic field was switched on.

Abstract (in Czech)

Tato práce studuje bilogický efekt nízkofrekvenčních elektromagnetických polí na tři různé bakteriální kmeny - Escherichia coli, Leclercia adecarboxylata a Staphylococcus aureus. Všechny byly exponovány nízkofrekvenčním magnetickým polem (t < 30 min, Bm=10 mT, f = 50 Hz) a poté porovnána jejich viabilita pomocí CFU - colony forming units. Pro všechny kmeny došlo k poklesu viability bakterií po expozici. Tento efekt byl kmenově závislý.

Links

• IAA4004404, research and development project: Name: Interakce biopolymerů s ligandy a detekce jejich konformačních změn na fázových rozhraních pomocí elektrochemických a optických metod

Investor: Academy of Sciences of the Czech Republic, Interaction of biopolymers with ligands and detection of their conformation changes at interfaces by electrochemical and optical methods.

• IBS5004107, research and development project: Name: Aplikace biofyzikálních metod v biotechnologické a klinické praxi

Investor: Academy of Sciences of the Czech Republic, Application of biophysical methods in biotechnological and clinical praxis