Abstract
Changes in the accessory group of neurosecretory cells in cats were studied in acute experiments under chloralose anesthesia. Unilateral stimulation of the supraoptic nucleus, leading to vasoconstriction, caused activation of cells of the accessory group on the side of stimulation and an increase in size of the nucleolus. Cells of the paraventricular nucleus were unchanged whereas cells of the supraoptic nucleus were activated. The uniformity of response of the accessory group of neurosecretory cells and of the supraoptic nucleus, together with histochemical data in the literature, suggests that the two groups of cells produce vasopressin, some of which accumulates in the posterior lobe of the pituitary and some acts as a mediator outside the hypothalamus.
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Borisova, E.A. Changes in the accessory group of hypothalamic neurosecretory cells after stimulation of the supraoptic nucleus. Bull Exp Biol Med 83, 261–263 (1977). https://doi.org/10.1007/BF00799441
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DOI: https://doi.org/10.1007/BF00799441