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Description
  • V článku je předložen experimentální důkaz vlivu vloženého elektrického pole (EP) na rychlost pulsních vln šířících se v biologickém excitabilním médiu. Excitabilní médium je tvořeno vrstvou hladovějících buněk hlenky Dicyostelium discoideum. Touto vrstvou se reakčně-difúzním mechanismem šíří vlny zvýšené koncentrace cAMP. Vnější stejnosměrné EP urychluje šíření těchto vln směrem ke kladné elektrodě a zpomaluje ho směrem k záporné elektrodě. EP také inciuje vznik nových center, která vysílají cAMP vlny, v prostředí před vlnou šířící se k záporné elektrodě. (cs)
  • We present an experimental evidence of effects of external electric fields (EFs) on the velocity of pulse waves propagating in a biological excitable medium. The excitable medium used is formed by a layer of starving cells of Dictyostelium discoideum through which the waves of increased concentration of cAMP propagate by reaction-diffusion mechanism. External dc EFs of low intensities (up to 5 V/cm) are shown to speed up the propagation of cAMP waves towards the positive electrode and slow it down towards the negative electrode. Electric fields were also found to support an emergence of new centers, emitting cAMP waves, in front of cAMP waves propagating towards the negative electrode.
  • We present an experimental evidence of effects of external electric fields (EFs) on the velocity of pulse waves propagating in a biological excitable medium. The excitable medium used is formed by a layer of starving cells of Dictyostelium discoideum through which the waves of increased concentration of cAMP propagate by reaction-diffusion mechanism. External dc EFs of low intensities (up to 5 V/cm) are shown to speed up the propagation of cAMP waves towards the positive electrode and slow it down towards the negative electrode. Electric fields were also found to support an emergence of new centers, emitting cAMP waves, in front of cAMP waves propagating towards the negative electrode. (en)
Title
  • Control of wave propagation in a biological excitable medium by an external electric field
  • Control of wave propagation in a biological excitable medium by an external electric field (en)
  • Řízení šíření vln v biologickém excitabilním médiu vnějším elektrickým polem (cs)
skos:prefLabel
  • Control of wave propagation in a biological excitable medium by an external electric field
  • Control of wave propagation in a biological excitable medium by an external electric field (en)
  • Řízení šíření vln v biologickém excitabilním médiu vnějším elektrickým polem (cs)
skos:notation
  • RIV/60461373:22340/05:00014579!RIV06-GA0-22340___
http://linked.open.../vavai/riv/strany
  • 269-274
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA204/01/1329), Z(MSM6046137306)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 516368
http://linked.open...ai/riv/idVysledku
  • RIV/60461373:22340/05:00014579
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • cAMP waves; electric field effects; control of intercellular communication; Dictyostelium discoideum; biological excitable medium (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [51B25B7C1D51]
http://linked.open...i/riv/nazevZdroje
  • Biophys.Chem.
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 113
http://linked.open...iv/tvurceVysledku
  • Ševčíková, Hana
  • Slámová, E.
  • Šebestíková, L.
http://linked.open...n/vavai/riv/zamer
issn
  • 0301-4622
number of pages
http://localhost/t...ganizacniJednotka
  • 22340
is http://linked.open...avai/riv/vysledek of
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