title: [Action of powerful ultrashort laser impulses on the permeability of the outer membrane of HeLa cells].
abstract: It was shown that in HeLa cells, at the stationary growth phase, the permeability of the outer membrane for thymidine increased 1 h after irradiation with two ultrashort impulses (Nd3+: YAG laser, lambda = 266, 532 or 1064 nm, the impulse duration of 3 X 10(-11) s, I = 2 or 20 MW/cm2). The effect was dependent on the time interval between the impulses and virtually independent of the radiation wave-length. The maximum increase in the membrane permeability (by approximately 3 times) was noted after irradiation at 4-6 s intervals between the impulses.
mesh_terms: D002463:Cell Membrane Permeability / Q000528:radiation effects*; D004247:DNA / Q000096:biosynthesis / Q000528:radiation effects; D006367:HeLa Cells / Q000528:radiation effects*; D006801:Humans; D007834:Lasers; D013936:Thymidine / Q000378:metabolism; D013997:Time Factors; D014316:Tritium
chemical_list: D014316:Tritium; D004247:DNA; D013936:Thymidine
vernacular_title: Deĭstvie moshchnykh ul'trakorotkikh lazernykh impul'sov na pronitsaemost' naruzhnoĭ membrany kletok HeLa.