Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model study
<p>Abstract</p> <p>Background</p> <p>When a cell is exposed to a time-varying magnetic field, this leads to an induced voltage on the cytoplasmic membrane, as well as on the membranes of the internal organelles, such as mitochondria. These potential changes in the organ...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2010-02-01
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| Series: | Journal of NeuroEngineering and Rehabilitation |
| Online Access: | http://www.jneuroengrehab.com/content/7/1/12 |
| _version_ | 1818036538780418048 |
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| author | Kang Eunji E Cotic Marija Ye Hui Fehlings Michael G Carlen Peter L |
| author_facet | Kang Eunji E Cotic Marija Ye Hui Fehlings Michael G Carlen Peter L |
| author_sort | Kang Eunji E |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>When a cell is exposed to a time-varying magnetic field, this leads to an induced voltage on the cytoplasmic membrane, as well as on the membranes of the internal organelles, such as mitochondria. These potential changes in the organelles could have a significant impact on their functionality. However, a quantitative analysis on the magnetically-induced membrane potential on the internal organelles has not been performed.</p> <p>Methods</p> <p>Using a two-shell model, we provided the first analytical solution for the transmembrane potential in the organelle membrane induced by a time-varying magnetic field. We then analyzed factors that impact on the polarization of the organelle, including the frequency of the magnetic field, the presence of the outer cytoplasmic membrane, and electrical and geometrical parameters of the cytoplasmic membrane and the organelle membrane.</p> <p>Results</p> <p>The amount of polarization in the organelle was less than its counterpart in the cytoplasmic membrane. This was largely due to the presence of the cell membrane, which "shielded" the internal organelle from excessive polarization by the field. Organelle polarization was largely dependent on the frequency of the magnetic field, and its polarization was not significant under the low frequency band used for transcranial magnetic stimulation (TMS). Both the properties of the cytoplasmic and the organelle membranes affect the polarization of the internal organelle in a frequency-dependent manner.</p> <p>Conclusions</p> <p>The work provided a theoretical framework and insights into factors affecting mitochondrial function under time-varying magnetic stimulation, and provided evidence that TMS does not affect normal mitochondrial functionality by altering its membrane potential.</p> |
| first_indexed | 2024-12-10T07:12:33Z |
| format | Article |
| id | doaj.art-bf1717f816914737bd66cf56fc465510 |
| institution | Directory Open Access Journal |
| issn | 1743-0003 |
| language | English |
| last_indexed | 2024-12-10T07:12:33Z |
| publishDate | 2010-02-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of NeuroEngineering and Rehabilitation |
| spelling | doaj.art-bf1717f816914737bd66cf56fc4655102022-12-22T01:58:02ZengBMCJournal of NeuroEngineering and Rehabilitation1743-00032010-02-01711210.1186/1743-0003-7-12Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model studyKang Eunji ECotic MarijaYe HuiFehlings Michael GCarlen Peter L<p>Abstract</p> <p>Background</p> <p>When a cell is exposed to a time-varying magnetic field, this leads to an induced voltage on the cytoplasmic membrane, as well as on the membranes of the internal organelles, such as mitochondria. These potential changes in the organelles could have a significant impact on their functionality. However, a quantitative analysis on the magnetically-induced membrane potential on the internal organelles has not been performed.</p> <p>Methods</p> <p>Using a two-shell model, we provided the first analytical solution for the transmembrane potential in the organelle membrane induced by a time-varying magnetic field. We then analyzed factors that impact on the polarization of the organelle, including the frequency of the magnetic field, the presence of the outer cytoplasmic membrane, and electrical and geometrical parameters of the cytoplasmic membrane and the organelle membrane.</p> <p>Results</p> <p>The amount of polarization in the organelle was less than its counterpart in the cytoplasmic membrane. This was largely due to the presence of the cell membrane, which "shielded" the internal organelle from excessive polarization by the field. Organelle polarization was largely dependent on the frequency of the magnetic field, and its polarization was not significant under the low frequency band used for transcranial magnetic stimulation (TMS). Both the properties of the cytoplasmic and the organelle membranes affect the polarization of the internal organelle in a frequency-dependent manner.</p> <p>Conclusions</p> <p>The work provided a theoretical framework and insights into factors affecting mitochondrial function under time-varying magnetic stimulation, and provided evidence that TMS does not affect normal mitochondrial functionality by altering its membrane potential.</p>http://www.jneuroengrehab.com/content/7/1/12 |
| spellingShingle | Kang Eunji E Cotic Marija Ye Hui Fehlings Michael G Carlen Peter L Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model study Journal of NeuroEngineering and Rehabilitation |
| title | Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model study |
| title_full | Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model study |
| title_fullStr | Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model study |
| title_full_unstemmed | Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model study |
| title_short | Transmembrane potential induced on the internal organelle by a time-varying magnetic field: a model study |
| title_sort | transmembrane potential induced on the internal organelle by a time varying magnetic field a model study |
| url | http://www.jneuroengrehab.com/content/7/1/12 |
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