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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 Rivista:
Biochimica et biophysica acta. Biomembranes
Elsevier
Numero volume: 1838 DOI: 10.1016/j.bbamem.2014.03.021 Referee: Sė: Internazionale Parole chiave:
Strutture CNR:
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