Splanchnic Sympathetic Activity
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Interactions between angiotensin II, aortic and sympathetic nerve during development of coarctation hypertension. / Interações entre angiotensina II, atividade do nervo depressor aórtico e atividade simpática esplâncnina durante o desenvolvimento da hipertensão por coarctação.
In the chronic phase of coarctation hypertension (CH) we have shown both marked depression of baroreceptor reflex control of heart rate (Michelini et al, Hypertension, 1992, 19: II159-II163) and normalization of the depressed reflex control even with the persistence of hypertension in losartan-treated animals (Santos et al, Am. J. Physiol, 1995, 269: H812-H8
Publicado em: 1999
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2. Selective control of sympathetic pathways to the kidney, spleen and intestine by the ventrolateral medulla in rats.
1. Electrical activity of multifibre renal, splenic, mesenteric and greater splanchnic nerves and 13th thoracic white rami was recorded in artificially respired, urethane-anaesthetized rats. Discharge of neurones in the rostral ventrolateral medulla was blocked by unilateral microinjections of the inhibitory amino acid glycine and effects on the electrical a
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3. 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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4. Sympathetic response to oral carbohydrate administration. Evidence from microelectrode nerve recordings.
Microneurography was used to measure sympathetic outflow in human muscle nerves (MSA) for up to 90 min after the ingestion of 100 g D-glucose, 75.8 g D-xylose, intravenous D-glucose (0.35 g/kg), and 300 ml water. 19 healthy subjects were examined using a microelectrode positioned in the right peroneal nerve. MSA increased from 21 +/- 0.9 bursts/min at rest t
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5. Evidence for descending tonic inhibition specifically affecting sympathetic pathways to the kidney in rats.
1. The present study investigated the possibility that pre- and postganglionic neurones innervating the kidney and spleen in rats are affected by descending inhibitory as well as descending excitatory influences. This hypothesis was tested by comparing the effects of cervical spinal cord transection to the effects of blockade of tonic activity of excitatory
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6. Hemodynamics in diabetic orthostatic hypotension.
Hemodynamic variables (blood pressure, cardiac output, heart rate, plasma volume, splanchnic blood flow, and peripheral subcutaneous blood flow) and plasma concentrations of norepinephrine, epinephrine, and renin were measured in the supine position and after 30 min of quiet standing. This was done in normal subjects (n = 7) and in juvenile-onset diabetic pa
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7. Effects of the renin-angiotensin system on the reflex response of the adrenal medulla to hypotension in the dog.
We have studied the influence of the renin-angiotensin system on the control of catecholamine release from innervated and denervated adrenal glands of anaesthetized dogs. Captopril reduced the resting release of catecholamines and inhibited release evoked either by lowering carotid sinus pressure or by stimulating the peripheral end of the cut splanchnic ner