Consulta: creatorFacets:"Bois, P"
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Effects of oleic acid on the high threshold barium current in seabass Dicentrarchus labrax ventricular myocytes
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Chatelier, Aurelien; Imbert, Nathalie; Zambonino, Jose-luis; Mckenzie, David; Bois, P.
The present study employed a patch clamp technique in isolated seabass ventricular myocytes to investigate the hypothesis that oleic acid (OA), a mono-unsaturated fatty acid, can exert direct effects upon whole-cell barium currents. Acute application of free OA caused a dose-dependent depression of the whole-cell barium current that was evoked by a voltage step to 0 mV from a holding potential of -80 mV. The derived 50% inhibitory concentration (IC50) was 12.49 +/- 0.27 mu mol l(-1). At a concentration of 30 mu mol l(-1), OA significantly reduced the current density to about 45% of control values, but did not modify either the shape of the current-density voltage relationship or the apparent reversal potential. In addition, OA did not modify the voltage...
Tipo: Text
Palavras-chave: Fatty acid; Sea bass; Ventricular myocyte; L type calcium channel; Oleic acid.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2120.pdf