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  • The effects of sigma ligand haloperidol in the multicellular guinea pig heart preparations were examined. Adult male guinea pigs were used. Left atrium and papillary muscle from right ventricle were examined. The stimulated twiches in horizontal bath were recorded isometrically. Sigma ligand haloperidol (10nM) was administered for 30 minutes. Its effect on the amplitude of contraction and on the mechanical restitution was evaluated. Marked positive inotropic effect (increase in the twitch amplitude ranging from 50 to 90 % for atria and 5 to 45% for ventricles, with maximal effect in the 5th minute of ligand administration for both preparations) has been observed. The mechanical restitution pattern under the effect of sigma receptor ligand is not altered. Thus, the positive inotropic effect of haloperidol was confirmed in guinea pig heart preparations. According to its effect on the mechanical restitution can be assumed that it is mediated via increased cytoplasmatic calcium concentration.
  • The effects of sigma ligand haloperidol in the multicellular guinea pig heart preparations were examined. Adult male guinea pigs were used. Left atrium and papillary muscle from right ventricle were examined. The stimulated twiches in horizontal bath were recorded isometrically. Sigma ligand haloperidol (10nM) was administered for 30 minutes. Its effect on the amplitude of contraction and on the mechanical restitution was evaluated. Marked positive inotropic effect (increase in the twitch amplitude ranging from 50 to 90 % for atria and 5 to 45% for ventricles, with maximal effect in the 5th minute of ligand administration for both preparations) has been observed. The mechanical restitution pattern under the effect of sigma receptor ligand is not altered. Thus, the positive inotropic effect of haloperidol was confirmed in guinea pig heart preparations. According to its effect on the mechanical restitution can be assumed that it is mediated via increased cytoplasmatic calcium concentration. (en)
  • The effects of sigma ligand haloperidol in the multicellular guinea pig heart preparations were examined. Adult male guinea pigs were used. Left atrium and papillary muscle from right ventricle were examined. The stimulated twiches in horizontal bath were recorded isometrically. Sigma ligand haloperidol (10nM) was administered for 30 minutes. Its effect on the amplitude of contraction and on the mechanical restitution was evaluated. Marked positive inotropic effect (increase in the twitch amplitude ranging from 50 to 90 % for atria and 5 to 45% for ventricles, with maximal effect in the 5th minute of ligand administration for both preparations) has been observed. The mechanical restitution pattern under the effect of sigma receptor ligand is not altered. Thus, the positive inotropic effect of haloperidol was confirmed in guinea pig heart preparations. According to its effect on the mechanical restitution can be assumed that it is mediated via increased cytoplasmatic calcium concentration. (cs)
Title
  • Effect of sigma ligand haloperidol in guinea pig heart preparations
  • Effect of sigma ligand haloperidol in guinea pig heart preparations (en)
  • Effect of sigma ligand haloperidol in guinea pig heart preparations (cs)
skos:prefLabel
  • Effect of sigma ligand haloperidol in guinea pig heart preparations
  • Effect of sigma ligand haloperidol in guinea pig heart preparations (en)
  • Effect of sigma ligand haloperidol in guinea pig heart preparations (cs)
skos:notation
  • RIV/00216224:14110/02:00006189!RIV08-GA0-14110___
http://linked.open.../vavai/riv/strany
  • A87
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA102/01/1494), P(GA305/98/P206)
http://linked.open...iv/cisloPeriodika
  • 6
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 644315
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  • RIV/00216224:14110/02:00006189
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • cardiac sigma receptor; haloperidol; contractility; mechanical restitution (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [50EDAD4DD33F]
http://linked.open...i/riv/nazevZdroje
  • Journal of Molecular and Cellular Cardiology
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
  • 34
http://linked.open...iv/tvurceVysledku
  • Nováková, Marie
issn
  • 0022-2828
number of pages
http://localhost/t...ganizacniJednotka
  • 14110
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