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Updated: Aug 29, 2026

Assessment of Vascular Tone Responsiveness using Isolated Mesenteric Arteries with a Focus on Modulation by Perivascular Adipose Tissues
Published on: June 3, 2019
[Endothelium-dependent mechanism of formation of the systemic hemodynamics responses]
L I Osadchiĭ1, T V Balueva, I V Sergeev
1I. P. Pavlov Institute of Physiology, Russian Acad. Sci., 199034, St. Petersburg, Nab. Makarova, 6, Russia.
Abstract:
In anaesthetised rats, effects of blockade of the NO-synthetase upon hemodynamic shifts were studied (arterial pressure, cardiac output, general peripheral vascular resistance), the shifts being evoked either by increase (infusion of polyglucon) or by decrease (orthostasis) in the cardiac output. Under the blockade of the NO-synthetase, the pressor effects of polyglucon increased by 27% and the orthostatic hypotension by 72%. Responses of general peripheral vascular resistance changed in the same direction. The findings suggest importance of the NO secretion by the vessels' endothelium for formation of the systemic hemodynamics responses.
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