Mesenteric Bed
Mostrando 13-24 de 26 artigos, teses e dissertações.
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13. RELATION OF BLOOD-BORNE AGENTS ACTING ON MESENTERIC VASCULAR BED TO GENERAL CIRCULATORY REACTIONS 1
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14. The peptidergic innervation of the developing mesenteric vascular bed in the rat.
We have followed the development of perivascular nerve fibres using antisera to substance P, calcitonin gene related peptide, neuropeptide Y and vasoactive intestinal polypeptide in the mesenteric vascular bed of developing Sprague-Dawley rats. The pattern and density of innervation appeared to be determined by one week of age. The pattern of innervation by
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15. Abnormality of superior mesenteric artery blood flow responses in human sympathetic failure.
1. Systemic and regional haemodynamic responses, including superior mesenteric artery blood flow, were measured during stimuli which increase sympatho-neural activity in age-matched normal subjects (controls) and in two groups of patients with sympathetic failure (pure autonomic failure and multiple system atrophy). The stimuli included the pressor tests (me
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16. Venous mechanoreceptor input to neurones in the inferior mesenteric ganglion of the guinea-pig.
Intracellular recordings were made in vitro from neurones of guinea-pig inferior mesenteric ganglia (i.m.g.) attached to the mesenteric vasculature of the distal colon region. The inferior mesenteric vein was cannulated for distension. Non-evoked continuous excitatory post-synaptic potentials (e.p.s.p.s) and action potentials were recorded from 38% of neuron
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17. Cannabinoid-induced mesenteric vasodilation through an endothelial site distinct from CB1 or CB2 receptors
Cannabinoids, including the endogenous ligand arachidonyl ethanolamide (anandamide), elicit not only neurobehavioral but also cardiovascular effects. Two cannabinoid receptors, CB1 and CB2, have been cloned, and studies with the selective CB1 receptor antagonist SR141716A have implicated peripherally located CB1 receptors in the hypotensive action of cannabi
The National Academy of Sciences.
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18. Sites of in vivo extraction and interconversion of testosterone and androstenedione in dogs
The interconversion and extraction of testosterone and androstenedione across and within different tissues or areas have been studied by the constant infusion technique. The results were calculated using the 3H/14C ratios and radioactive concentrations of testosterone and androstenedione obtained from afferent and efferent blood and tissues at equilibrium. I
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19. Release of leukotriene C4 by isolated, perfused rat small intestine in response to platelet-activating factor.
We reported a rat model of necrotizing enterocolitis by injecting platelet-activating factor (PAF) into the mesenteric vascular bed, and suggested that leukotrienes (LT) are secondary mediators. The present study, using isolated, buffer-perfused rat small intestine, shows: Isolated, perfused small intestine synthesizes LTs in response to PAF. Leukotriene C4
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20. Differential control of cardiac and vasomotor activity by neurones in nucleus paragigantocellularis lateralis in the cat.
1. In cats anaesthetized with chloralose, neuronal cell bodies were excited by micro-injection of DL-homocysteic acid (DLH). 2. Injections made into the ventrolateral medulla in the region of nucleus paragigantocellularis lateralis (p.g.l.) produced a rise in blood pressure accompanied by either an increase or decrease in heart rate according to the precise
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21. Pivotal role of phosphate chain length in vasoconstrictor versus vasodilator actions of adenine dinucleotides in rat mesenteric arteries.
1. The isolated perfused rat mesenteric arterial bed was used to examine the activity of the adenine dinucleotides: beta-nicotinamide adenine dinucleotide (NAD); beta-nicotinamide adenine dinucleotide phosphate (NADP); flavin adenine dinucleotide (FAD); and of the alpha,omega-diadenosine polyphosphates: adenylyl adenosine (AP1A); P1,P2-diadenosine pyrophosph
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22. Endotoxic shock after long-term resuscitation of hemorrhage/reperfusion injury decreased splanchnic blood flow and eicosanoid release.
OBJECTIVE: The authors examine the hypothesis that hemorrhage/reperfusion injury predisposes the splanchnic bed to decreased prostacyclin (PGl2) release and blood flow after subsequent endotoxin challenge. SUMMARY BACKGROUND DATA: Prostacyclin is a potent vasodilator that has been demonstrated to be an important regulator of splanchnic blood flow. Previous s
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23. Metabolism of arterial plasma estrogens by the splanchnic organs of the dog in vivo
In order to study the splanchnic metabolism of blood-borne estrogens, a constant infusion of estrone-6,7-3H was made in a series of dogs, and arteriovenous (A-V) differences at equilibrium were determined for estrone-6,7-3H and for its products estradiol-17β, estrone sulfate, estrone glucosiduronate, and estradiol-17β glucosiduronate across the splanchnic
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24. Microvascular and tissue oxygen gradients in the rat mesentery
One of the most important functions of the blood circulation is O2 delivery to the tissue. This process occurs primarily in microvessels that also regulate blood flow and are the site of many metabolic processes that require O2. We measured the intraluminal and perivascular pO2 in rat mesenteric arterioles in vivo by using noninvasive phosphorescence quenchi
The National Academy of Sciences.