A STUDY OF THE RELATIONSHIP BETWEEN DOPAMINE AND NORADRENALINE CONTENT AND TRANSMURAL PRESSURE IN THE MESENTERIC ARTERIES OF THE DOG

Abstract

1 Transmural pressure was measured in the main trunk and in a proximal branch of the mesenteric artery from normotensive dogs. Dopamine and noradrenaline content were determined in both mesenteric arterial segments. 2 For each vessel transmural pressure values and dopamine and noradrenaline content were plotted for calculation of linearity of regression. A positive correlation was found between transmural pressure values and catecholamine content in both segments of the mesenteric artery; i.e. in the main trunk and in the proximal branch. 3 These findings suggest a reciprocal regulation between structure/function of these blood vessels and their sympathetic innervation.