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Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail

Effects of electromagnetic (EMF) field on microorganisms related to human had caught many attentions in line with the development and usage of new technology worldwide. The closest EMF inducer to human nowadays appeared to be mobile phones. Staphylococcus aureus (SA) had been reported as both a majo...

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Main Author: Mohd Ismail, Mohd Saufee Al Firdaus
Format: Thesis
Language:English
Published: 2011
Subjects:
QR Microbiology
Electromagnetic fields
Online Access:https://ir.uitm.edu.my/id/eprint/72176/1/72176.pdf
https://ir.uitm.edu.my/id/eprint/72176/
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spelling my.uitm.ir.721762024-01-05T02:52:54Z https://ir.uitm.edu.my/id/eprint/72176/ Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail Mohd Ismail, Mohd Saufee Al Firdaus QR Microbiology Electromagnetic fields Effects of electromagnetic (EMF) field on microorganisms related to human had caught many attentions in line with the development and usage of new technology worldwide. The closest EMF inducer to human nowadays appeared to be mobile phones. Staphylococcus aureus (SA) had been reported as both a major culprit of diseases and a natural protective barrier (in the ear) to human. To date, knowledge on phenotypical changes of S. aureus exposed to EMF has not been documented in detail. The aim of this study was to investigate the effects imposed by EMF of a mobile phone on the phenotypic characteristics of S. aureus. Two conditions of radiation, standby-mode and on-call mode, at four different durations, 15, 30, 45 and 60 minutes, were executed. The effects of these conditions on the radiated S. aureus were evaluated based on comparisons made with the non-radiated S. aureus. The radiated S. aureus was studied on the viability and changes in growth pattern; morphology differences; biochemical reactivity level; the deviation of antimicrobial sensitivity and biofilm production in comparison to non-radiated strains. The viability study had shown that growth of S. aureus was enhanced under the standby condition while the on-call condition, growth was suppressed. These two outcomes were influenced by the differences in the strength and duration of exposure of the EMF. No change in the growth curve pattern was observed for the irradiated S. aureus. The morphology of the S. aureus when viewed under direct light and scanning electron microscopes had showed that the shape and arrangement of the organism was highly preserved. The biochemical properties and antimicrobial sensitivity of S. aureus was not affected while the quantification of biofilm had shown a slight deviation in the glycocalyx production compared to normal. It is postulated that the complexity of the cell wall is one of the major contributors to the compensatory mechanism of adaption of the survived cells. 2011 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/72176/1/72176.pdf Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail. (2011) Degree thesis, thesis, Universiti Teknologi MARA (UiTM).
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic QR Microbiology
Electromagnetic fields
spellingShingle QR Microbiology
Electromagnetic fields
Mohd Ismail, Mohd Saufee Al Firdaus
Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail
description Effects of electromagnetic (EMF) field on microorganisms related to human had caught many attentions in line with the development and usage of new technology worldwide. The closest EMF inducer to human nowadays appeared to be mobile phones. Staphylococcus aureus (SA) had been reported as both a major culprit of diseases and a natural protective barrier (in the ear) to human. To date, knowledge on phenotypical changes of S. aureus exposed to EMF has not been documented in detail. The aim of this study was to investigate the effects imposed by EMF of a mobile phone on the phenotypic characteristics of S. aureus. Two conditions of radiation, standby-mode and on-call mode, at four different durations, 15, 30, 45 and 60 minutes, were executed. The effects of these conditions on the radiated S. aureus were evaluated based on comparisons made with the non-radiated S. aureus. The radiated S. aureus was studied on the viability and changes in growth pattern; morphology differences; biochemical reactivity level; the deviation of antimicrobial sensitivity and biofilm production in comparison to non-radiated strains. The viability study had shown that growth of S. aureus was enhanced under the standby condition while the on-call condition, growth was suppressed. These two outcomes were influenced by the differences in the strength and duration of exposure of the EMF. No change in the growth curve pattern was observed for the irradiated S. aureus. The morphology of the S. aureus when viewed under direct light and scanning electron microscopes had showed that the shape and arrangement of the organism was highly preserved. The biochemical properties and antimicrobial sensitivity of S. aureus was not affected while the quantification of biofilm had shown a slight deviation in the glycocalyx production compared to normal. It is postulated that the complexity of the cell wall is one of the major contributors to the compensatory mechanism of adaption of the survived cells.
format Thesis
author Mohd Ismail, Mohd Saufee Al Firdaus
author_facet Mohd Ismail, Mohd Saufee Al Firdaus
author_sort Mohd Ismail, Mohd Saufee Al Firdaus
title Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail
title_short Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail
title_full Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail
title_fullStr Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail
title_full_unstemmed Effects of exposure to mobile phone induced-electromagnetic field on Staphylococcus aureus / Mohd Saufee Al Firdaus Mohd Ismail
title_sort effects of exposure to mobile phone induced-electromagnetic field on staphylococcus aureus / mohd saufee al firdaus mohd ismail
publishDate 2011
url https://ir.uitm.edu.my/id/eprint/72176/1/72176.pdf
https://ir.uitm.edu.my/id/eprint/72176/
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score 13.211869

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