Effects of low-frequency magnetic fields on bacteria
Escherichia coli.

J 2002

Effects of low-frequency magnetic fields on bacteria Escherichia coli.

STRAŠÁK, Luděk, Vladimír VETTERL a Jan ŠMARDA

Základní údaje

Originální název

Effects of low-frequency magnetic fields on bacteria Escherichia coli.

Autoři

STRAŠÁK, Luděk (203 Česká republika), Vladimír VETTERL (203 Česká republika, garant) a Jan ŠMARDA (203 Česká republika)

Vydání

Bioelectrochemistry, The Netherlands, Elsevier, 2002, 1567-5394

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10610 Biophysics

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 1.463

Kód RIV

RIV/00216224:14310/02:00007469

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

biological effects of low-frequency electromagnetic fields; bacteria E.coli;

Štítky

bacteria E.coli

Změněno: 10. 2. 2003 16:22, prof. RNDr. Vladimír Vetterl, DrSc.

Anotace

V originále

The effects of low-frequency magnetic fields (Bm=2,7-10 mT,f=50 Hz, time of exposure t=0-12 min, laboratory temperature) on the viability and oxidoreductive activity of gram-negative bacteria Escherichia coli were investigated. The growth of these bacteria was negatively affected by such fields. We compared two experimental systems-solenoid [Sb.Lek.99(1998)455] and a cylindrical spool-to find differences between nonhomogeneous and "more homogeneous" magnetic fields. We observed analogous effect in both experimental conditions. The growth curve of the exposed bacteria was lower than the control one. The ability of bacteria to form colonies decreased with increasing magnetic field intensity and with increasing time of exposure. The oxidoreductive activity was measured using reduction of a tetrazolium salt. The decrease in oxidoreductive activity with increasing time of exposure was observed, but the effect was due to a lower amount of bacteria surviving the exposure to the magnetic fields. The decrease in oxidoreductive activity and ability to form colonies were compared with the assumption that the effect of magnetic fields is probably bactericidal.

Návaznosti

GA310/01/0816, projekt VaV

Název: Vliv elektrických a magnetických polí o nízkých frekvencích na biologické systémy

Investor: Grantová agentura ČR, Vliv elektrických a magnetických polí o nízkých frekvencích na biologické systémy

Citovat

STRAŠÁK, Luděk, Vladimír VETTERL a Jan ŠMARDA. Effects of low-frequency magnetic fields on bacteria Escherichia coli. Bioelectrochemistry. The Netherlands: Elsevier, 2002, roč. 2002, č. 55, s. 161-164. ISSN 1567-5394.

@article{484123,
   author = {Strašák, Luděk and Vetterl, Vladimír and Šmarda, Jan},
   article_location = {The Netherlands},
   article_number = {55},
   keywords = {biological effects of low-frequency electromagnetic fields; bacteria E.coli;},
   language = {eng},
   issn = {1567-5394},
   journal = {Bioelectrochemistry},
   title = {Effects of low-frequency magnetic fields on bacteria Escherichia coli.},
   volume = {2002},
   year = {2002}
}

TY  - JOUR
ID  - 484123
AU  - Strašák, Luděk - Vetterl, Vladimír - Šmarda, Jan
PY  - 2002
TI  - Effects of low-frequency magnetic fields on bacteria Escherichia coli.
JF  - Bioelectrochemistry
VL  - 2002
IS  - 55
SP  - 161
EP  - 161
PB  - Elsevier
SN  - 15675394
KW  - biological effects of low-frequency electromagnetic fields
KW  - bacteria E.coli;
N2  - The effects of low-frequency magnetic fields (Bm=2,7-10 mT,f=50 Hz, time of exposure t=0-12 min, laboratory temperature) on the viability and oxidoreductive activity of gram-negative bacteria Escherichia coli were investigated. The growth of these bacteria was negatively affected by such fields. We compared two experimental systems-solenoid [Sb.Lek.99(1998)455] and a cylindrical spool-to find differences between nonhomogeneous and "more homogeneous" magnetic fields. We observed analogous effect in both experimental conditions. The growth curve of the exposed bacteria was lower than the control one. The ability of bacteria to form colonies decreased with increasing magnetic field intensity and with increasing time of exposure. The oxidoreductive activity was measured using reduction of a tetrazolium salt. The decrease in oxidoreductive activity with increasing time of exposure was observed, but the effect was due to a lower amount of bacteria surviving the exposure to the magnetic fields. The decrease in oxidoreductive activity and ability to form colonies were compared with the assumption that the effect of magnetic fields is probably bactericidal.
ER  -

STRAŠÁK, Luděk, Vladimír VETTERL a Jan ŠMARDA. Effects of low-frequency magnetic fields on bacteria Escherichia coli. \textit{Bioelectrochemistry}. The Netherlands: Elsevier, 2002, roč.~2002, č.~55, s.~161-164. ISSN~1567-5394.

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