Jul 1, 1975

Ability of adrenergic nerves to accumulate exogenous noradrenaline under some pharmacological influences

Farmakologiia i toksikologiia
V A Arefolov, L V Panasiuk

Abstract

By employing spectrofluorometry and quantitative fluorescent histochemistry the norepinephrine (NE) content in the tissue and in the adrenergic nerves of Vas deferens of the rat after depletion of the transmitter's reserves with tyramine and their subsequent replenishment through incubation of the tissue with exogenous NE was measured. The object of investigations was also the influence of antidepressants (phthoracizine and imipramine) and of the cholinolytic spasmolytin (diphacyl) on processes of the NE accumulation. Phthoracizine, impramine and spasmolytin were found to capable of inhibiting accumulation of the exogenous NE in the tissue and in the adrenergic nerves of Vas deferens, provided the mediator is present in the extraneuronal medium in a concentration of 0.5 gamma/ml. When the neurotransmitter was introduced into the medium in higher concentrations (10 gamma/ml) the antidepressents and cholinolytic did not produce the said effect. A correlation of spectrofluorometric and quantitative fluorescent-histochemical findings was observed in cases when the tissue contained less than 50% (i.e. less than 9 gamma/ml) of the total NE reserves.

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Mentioned in this Paper

Adrenergic Nerves
Sympathetic Nervous System
Neurons
Norepinephrine, (+, -)-Isomer
Fluorescent stain
Tyramine
Histocytochemistry
Diphenylacetic Acids
Norepinephrine
Neurotransmitters

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