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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2014

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Induced movements of giant vesicles by millimeter wave radiation

Anno di pubblicazione: 2014

Formato: Elettronico

Autori: Martina Albini, Simone Dinarelli, Francesco Pennella, Stefania Romeo, Emiliano Zampetti, Marco Girasole, Umberto Morbiducci, Rita Massa, Alfonsina Ramundo-Orlando

Affiliazioni autori: IFT-CNR, 00133 Rome, Italy ISM-CNR, 00133 Rome, Italy Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy IREA-CNR, 89124 Naples, Italy IMM-CNR, 00133 Rome, Italy Department of Physics, University Federico II, 89126 Naples, Italy

Autori CNR:


Lingua: inglese

Abstract: Our previous study of interaction between low intensity radiation at 53.37 GHz and cell-size system - such as giant vesicles - indicated that a vectorial movement of vesicles was induced. This effect among others, i.e. elongation, induced diffusion of fluorescent dye di-8-ANEPPS, and increased attractions between vesicles was attributed to the action of the field on charged and dipolar residues located at the membrane-water interface. In an attempt to improve the understanding on how millimeter wave radiation (MMW) can induce this movement we report here a real time evaluation of changes induced on the movement of giant vesicles. Direct optical observations of vesicles subjected to irradiation enabled the monitoring in real time of the response of vesicles. Changes of the direction of vesicle movement are demonstrated, which occur only during irradiation with a "switch on" of the effect. This MMW-induced effect was observed at a larger extent on giant vesicles prepared with negatively charged phospholipids. The monitoring of induced-by-irradiation temperature variation and numerical dosimetry indicate that the observed effects in vesicle movement cannot be attributed to local heating.

Lingua abstract: inglese

Pagine da: 1710

Pagine a: 1718


Biochimica et biophysica acta. Biomembranes Elsevier
Paese di pubblicazione: Paesi Bassi
Lingua: inglese
ISSN: 0005-2736

Numero volume: 1838

DOI: 10.1016/j.bbamem.2014.03.021

Referee: Sė: Internazionale

Parole chiave:

  • giant vesicles
  • vesicles trajectorie
  • movement changes
  • millimeter wave
  • non-thermal mechanism
  • real-time exposure

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