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[Analysis of the regulatory influence of effector cells on 3H-catecholamine synthesis in an adrenergic neuron].

In isolated organs of the white rats activation of noradrenaline-H3 and dophamine-H3 synthesis during action of the alpha-adrenoblocking agent phentolamine (1.10(-6) M) and inhibition of the amines synthesis under influence of the alpha-adrenoreceptor activator mezaton (1.10(-5) M) were due to a release from cells-effectors of respective humoral factors and to the latters' effect upon the processes of amine formation in the adrenergic neuron. Formation of the humoral factors altering the rate of catecholamines-H3 synthesis is associated with activation of the protein synthesis in cells-effectors and occurs during change of the functional state (excitation or blockade) of the post-synaptic adrenoreceptors. The processes occurring at the time in the adrenergic neuron, are not correlated with protein formation. The possibility of existence of a common mechanism for feed-back transsynaptic regulation of synthesis and neuronal uptake of noradrenaline via adrenoreceptors of cells-effectors by means of changing the intensity of thyrosin and noradrenaline transport into the neuron is discussed.