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  • Title: [Studies on the role of high pressure baroreceptors in vasopressin (ADH) secretion. Effect of occlusion of common carotid and vertebral arteries on blood ADH level (author's transl)].
    Author: Matsuzaki M.
    Journal: Nihon Naibunpi Gakkai Zasshi; 1977 Aug 20; 53(8):982-9. PubMed ID: 913722.
    Abstract:
    The role of baroreceptors in common carotid and vertebral arteries and arteries in the thoracic cavity in vasopressin secretion was investigated in this study. Effects of bilateral occlusion of common carotid and vertebral arteries on blood ADH level as well as mean arterial pressure were studied in common carotid arterial plexus-denervated dogs, cervically vagotomized dogs and intact dogs. Blood ADH titers were determined by bioassay technic before and 5 minutes after the occlusion of the arteries and were compared with the changes of mean arterial pressure (MAP). The following results were obtained. (1) Blood ADH titers and MAP were elevated by the occlusion of the common carotid arteries in both intact and vagotomized dogs, while they were not significantly affected in denervated dogs. Elevation of blood ADH titers was more pronounced in vagotomized dogs than in intact dogs. (2) Blood ADH titers and MAP were elevated by the occlusion of vertebral arteries in all groups of dogs. However, the elevation of blood ADH titers in denervated dogs was more pronounced than in intact dogs, but less than in vagotomized dogs. (3) The effects of the occlusion of common carotid arteries on blood ADH titers and MPA were more pronounced than those of the occlusion of vertebral arteries. These results may suggest that: a. baroreceptors involved in vasopressin secretion are present in vertebral arteries as well, and that b. the intrathoracic baroreceptors are dominant in controlling vasopressin secretion, while those in common carotid arteries are secondly and those in vertebral arteries thirdly dominant.
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