C Sarantos-Laska

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The release of noradrenaline accompanying positive inotropic and chronotropic actions of isoprenaline and histamine was investigated in rabbit atria in which the transmitter stores were labelled with (2H)-noradrenaline. Propranolol (3 microM) significantly reduced the isoprenaline (1 microM)-induced release of radioactivity and positive inotropic and(More)
The actions of isoprenaline (1 microM) were investigated in spontaneously beating isolated paired atria from rabbits, guinea-pigs and rats and in paced left atria from rabbits and rats. Isoprenaline, when applied for a 10 min period to paired atrial from rabbits, guinea-pigs and rats, produced a short-lived release of noradrenaline which appeared to be(More)
Mianserin increased stimulation-induced release of noradrenaline from guinea-pig atria and brain cortex slices. The increase still occurred when neuronal reuptake of noradrenaline was blocked by cocaine. Mianserin blocked the neuronal uptake of 3H-noradrenaline only in high concentrations (1 microM in atria produced 40% block; 10 microM in cortex produced(More)
The release of noradrenaline and its metabolic products by the nicotinic agonists nicotine, 1,1-dimethyl-4-phenylpiperazinium (DMPP) and acetylcholine (in the presence of atropine) was investigated in rabbit atria in which the transmitter stores were labelled with (3H)-noradrenaline. The proportions of noradrenaline and its metabolic products released by(More)
The effects of nicotine were studied on perfusion pressure and vasoconstrictor responses to sympathetic nerve stimulation in the isolated ear artery of the rabbit. Infusions of nicotine (50 micro M) produced a transient increase in perfusion pressure and potentiated responses to nerve stimulation; these effects of nicotine were unaffected by atropine (0.3(More)
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