Effect of Cell Size and Shape on Electric Field Threshold and Critical Transmembrane Voltage for Electroporation
عنوان مقاله: Effect of Cell Size and Shape on Electric Field Threshold and Critical Transmembrane Voltage for Electroporation
شناسه ملی مقاله: JR_IJMP-5-2_001
منتشر شده در در سال 1387
شناسه ملی مقاله: JR_IJMP-5-2_001
منتشر شده در در سال 1387
مشخصات نویسندگان مقاله:
Leila Towhidi - Ph.D. Student, Medical Physics Dept., Tarbiat Modares University, Tehran, Iran
Seyed Mohammad Pourmir Firoozabadi - Associate professor, Medical Physics Dept., Tarbiat Modares University, Tehran, Iran
Hossein Mozdarani - Professor, Medical Genetics Dept., Tarbiat Modares University, Tehran, Iran
Tadej Kotnik - Associate Professor, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
Gorazd Pucihar - Post doc student, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
Damijan Miklavcic - Professor, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
خلاصه مقاله:
Leila Towhidi - Ph.D. Student, Medical Physics Dept., Tarbiat Modares University, Tehran, Iran
Seyed Mohammad Pourmir Firoozabadi - Associate professor, Medical Physics Dept., Tarbiat Modares University, Tehran, Iran
Hossein Mozdarani - Professor, Medical Genetics Dept., Tarbiat Modares University, Tehran, Iran
Tadej Kotnik - Associate Professor, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
Gorazd Pucihar - Post doc student, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
Damijan Miklavcic - Professor, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
Introduction: Electroporation is a technique for increasing the permeability of the cell membrane to otherwise non-permeate molecules due to an external electric field. This permeability enhancement is detectable if the induced transmembrane voltage becomes greater than a critical value which depends on the pulse strength threshold. In this study, the variability of the electric field threshold and the minimal transmembrane voltage resulting in detectable electroporation of the plasma membrane of spherical and irregularly shaped cells have been investigated. Materials and Methods: Spherical cells of different dimensions and attached cells of various shapes were selected. The chosen cells were exposed to ۱۰۰ ۰s electric pulses with incrementing amplitudes. Electroporation was detected by an increase in the fluorescence caused by an influx of Ca ۲+ and the threshold electric field for each cell was recorded. A ۳D geometrical model of each cell was constructed from its cross sectional images. Simulation using the finite element method was performed to obtain the critical induced transmembrane voltage for each individual cell. Results: The magnitudes of the electric field strength threshold and critical transmembrane voltage versus cell radius were obtained for spherical cells. To investigate the effects of cell shapes and orientations on the field strength threshold and critical voltage, the considered attached cells were categorized into three different groups. Field strength threshold and critical voltage was obtained for each cells and the results for the different groups were compared. Discussion and Conclusion: Size, shape and orientation of cells affect the critical transmembrane voltage and all these elements in turn influence the electric field threshold and, therefore, the efficiency of electroporation.
کلمات کلیدی: Electroporation, Cell Size, Cell Shape, Critical Transmembrane Voltage, Pulse Strength Threshold
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1739072/