NDLI: Effects on bacterial cells by exposure to VLF magnetic fields

Content Provider	IEEE Xplore Digital Library
Author	Kakikawa, M. Tachi, S. Hashimoto, S. Iwahara, M. Yamada, S.
Copyright Year	2005
Description	Author affiliation: Graduate Sch. of Natural Sci. & Technol., Kanazawa Univ., Japan (Kakikawa, M.; Tachi, S.)
Abstract	In this study, an investigation on whether very low frequency magnetic fields (VLFMF) or induced eddy current cause DNA damage or physiological abnormality in the bacterial cell using lysogenic bacteriophage /spl lambda/. The bacteriophage /spl lambda/ can multiply by either a lytic or a lysogenic pathway in the E. coli bacterium. When the bacteriophage is growing in the lysogenic state, damage to the cell (e.g. DNA damage by exposure to UV light or mitomycin C) causes the integrated viral DNA (prophage) to exit from the host chromosome and shift to lytic growth, regarded as bacteriophage induction. In this study, the E. coli W3130 lambda/spl I.bar/857, which have lambda of lysogenic state (as prophage), was exposed to extremely low frequency (ELF) magnetic fields and the induction of phage was measured by plaque assay. By exposure to 1 mT magnetic fields for about 8 hours, the bacteriophages shifted to lytic growth 1.34 times as often as control. On the other hand, the mitomycin C, mutagenic reagent, showed a shift in bacteriophages from lysogenic to lytic growth 46-times as often as control in this system. These results suggest the following two points: (1) VLF magnetic fields (20 kHz, 1 mT) dose not induce DNA damage strongly in the bacterial cell as mitomycin C action. (2) The induced eddy current rather than VLF magnetic field causes some damage to E. coli cells and the prophages are induced to lytic growth.
Sponsorship	Magnetics Soc. of Japan Magnetics Soc. of the IEEE
Starting Page	1147
Ending Page	1148
File Size	203817
Page Count	2
File Format	PDF
ISBN	0780390091
DOI	10.1109/INTMAG.2005.1464003
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-04
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microorganisms DNA Magnetic fields Magnetic field measurement Eddy currents Biological cells Ground penetrating radar Geophysical measurement techniques Frequency measurement Control systems
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Increase in mutations by exposure of mammalian cells to ELF magnetic fields

Combined effects induced in biological systems by exposure to EMF and chemical or physical agents

Electromagnetic field in human body due to VLF transmitter

PV EMF [EM fields]

Environmental 50Hz magnetic fields measurements

Eddy-current DC magnetometer as an ELF antenna

Effect of 8.43 Hz Frequency Magnetic Field on the Single Neuron

MagneSim: a simple magnetic field modelling program

Aspects of Low Frequency (ulf/elf/vlf) Radio Polarimetry and Some Applications

Effects on bacterial cells by exposure to VLF magnetic fields

Similar Documents

Increase in mutations by exposure of mammalian cells to ELF magnetic fields

Combined effects induced in biological systems by exposure to EMF and chemical or physical agents

Electromagnetic field in human body due to VLF transmitter

PV EMF [EM fields]

Environmental 50Hz magnetic fields measurements

Eddy-current DC magnetometer as an ELF antenna

Effect of 8.43 Hz Frequency Magnetic Field on the Single Neuron

MagneSim: a simple magnetic field modelling program

Aspects of Low Frequency (ulf/elf/vlf) Radio Polarimetry and Some Applications

Effects on bacterial cells by exposure to VLF magnetic fields