Histological investigation was carried out to study the activity of aminopeptidase (AMP) in neurons of the nodose ganglion of immobilized rabbits with acute experimental emotional stress induced by electrical stimulation of ventromedial hypothalamic nuclei and skin. On the basis of the pattern of cardiovascular reactions, two groups of animals were distinguished: resistant and susceptible to the stress effects. In control animals, AMP activity was found to vary in neurons of different size.
View Article and Find Full Text PDFThe Zigmond method was made use of to study tyrosine hydroxylase activity in cervical, stellate and nodosal ganglia of rabbits predisposed and resistant to stress. Experimental acute emotional stress was induced by concurrent stimulation of the ventromedial nuclei of the hypothalamus and different skin areas. Experiments have shown that changes in metabolic activity of the sympathetic and parasympathetic systems were phasic in nature throughout 3 hours of the experiment.
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