Permeability Changes Induced by 130 GHz Pulsed Radiation on Cationic Liposomes Loaded With Carbonic Anhydrase (Articolo in rivista)

Type
Label
  • Permeability Changes Induced by 130 GHz Pulsed Radiation on Cationic Liposomes Loaded With Carbonic Anhydrase (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/bem.20343 (literal)
Alternative label
  • Ramundo-Orlando A1.; Gallerano G.P.2; Stano P.3; Doria A.2; Giovenale E.2; Messina G.2; Cappelli M.1; D'Arienzo M.;2 Spassovsky I.2 (2007)
    Permeability Changes Induced by 130 GHz Pulsed Radiation on Cationic Liposomes Loaded With Carbonic Anhydrase
    in Bioelectromagnetics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ramundo-Orlando A1.; Gallerano G.P.2; Stano P.3; Doria A.2; Giovenale E.2; Messina G.2; Cappelli M.1; D'Arienzo M.;2 Spassovsky I.2 (literal)
Pagina inizio
  • 587 (literal)
Pagina fine
  • 671 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Impact factor(2006) = 1.514 Funded by: Commission of the European Communities, RTD programme Quality of Life and Management of Living Resources; Grant Number: QLK4-CT2000-00129 (literal)
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  • 28 (literal)
Rivista
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  • Epub ahead of print cit.2 (literal)
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  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • PubMe (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 = Istituto di Neurobiologia e Medicina Molecolare, National Research Council (CNR), Via del Fosso del Cavaliere, Rome, Italy; 2 = UTS Tecnologie Fisiche Avanzate, ENEA-Frascati,Via Enrico Fermi 4, Frascati, Rome, Italy; 3 = Enrico Fermi Center, Compendio del Viminale, Rome, Italy (literal)
Titolo
  • Permeability Changes Induced by 130 GHz Pulsed Radiation on Cationic Liposomes Loaded With Carbonic Anhydrase (literal)
Abstract
  • The effects of pulsed 130 GHz radiations on lipid membrane permeability were investigated by using cationic liposomes containing dipalmitoyl phosphatidylcholine (DPPC), cholesterol, and stearylamine. Carbonic anhydrase (CA) was loaded inside the liposomes and the substrate p-nitrophenyl acetate (p-NPA) added in the bulk aqueous phase. Upon permeation across the lipid bilayer, the trapped CA catalyzes the conversion of the p-NPA molecules into products. Because the self-diffusion rate of p-NPA across intact liposomes is very low the CA reaction rate, expressed as DeltaA/min, is used to track membrane permeability changes. The effect of 130 GHz radiation pulse-modulated at low frequencies of 5, 7, or 10 Hz, and at time-averaged incident intensity (I(AV)) up to 17 mW/cm(2) was studied at room temperature (22 degrees C), below the phase transition temperature of DPPC liposomes. At all the tested values of I(AV) a significant enhancement of the enzyme reaction rate in CA-loaded liposomes occurred when the pulse repetition rate was 7 Hz. Typically, an increase from DeltaA/min = 0.0026 +/- 0.0010 (n = 11) to DeltaA/min = 0.0045 +/- 0.0013 (n = 12) (P < 0.0005) resulted at I(AV) = 7.7 mW/c (literal)
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