title: A study of the electric field distribution in erythrocyte and rod shape cells from direct RF exposure.
abstract: This paper shows the importance of using realistic cell shapes with the proper geometry and orientation to study the mechanisms of direct cellular effects from radiofrequency (RF) exposure. For this purpose, the electric field distribution within erythrocyte, rod and ellipsoidal cell models is calculated by using a finite element technique with adaptive meshing. The three cell models are exposed to linearly polarized electromagnetic plane waves of frequencies 900 and 2450 MHz. The results show that the amplification of the electric field within the membrane of the erythrocyte shape cell is more significant than that observed in other cell geometries. The results obtained show the dependence of the induced electric field distribution on frequency, electrical properties of membrane and cytoplasm and the orientation of the cell with respect to the applied field. The analysis of the transition of an erythrocyte shape to an ellipsoidal one shows that a uniformly shelled ellipsoid model is a rough approximation if a precise simulation of bioeffects in cells is desired.
authors.affiliation: Dpt. Física Aplicada III, Facultad de Físicas, Universidad Complutense de Madrid, Spain.
authors.forename: Martín S
authors.initials: MS
authors.lastname: Muñoz San
authors.forename: J L
authors.initials: JL
authors.lastname: Sebastián
authors.forename: M
authors.initials: M
authors.lastname: Sancho
authors.forename: J M
authors.initials: JM
authors.lastname: Miranda
mesh_terms: D000818:Animals; D016764:Cell Polarity / Q000502:physiology; D048429:Cell Size / Q000502:physiology; D003198:Computer Simulation; D003593:Cytoplasm / Q000502:physiology; D017097:Electric Impedance; D004574:Electromagnetic Fields; D004910:Erythrocyte Membrane / Q000502:physiology / Q000648:ultrastructure; D004912:Erythrocytes / Q000166:cytology* / Q000502:physiology*; D020342:Finite Element Analysis; D006801:Humans; D008872:Microwaves; D008954:Models, Biological; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods*; D017948:Retinal Rod Photoreceptor Cells / Q000166:cytology / Q000502:physiology