Results 281 to 290 of about 809,444 (326)
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The Sympathetic Nervous System of Anamniotes
Brain, Behavior and Evolution, 2007The sympathetic nervous system develops as an evolutionary trait with gnathostomes (jawed vertebrates), but not with agnathan fishes (i.e., hagfishes and lampreys). Organization of the sympathetic preganglionic neuronal columns is different in teleosts and anurans. In the teleosts so far examined, the majority of sympathetic preganglionic neurons (SPNs)
Kengo Funakoshi, Masato Nakano
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The Sympathetic Nervous System and Pain
NeuroMolecular Medicine, 2007The sympathetic nervous system (SNS) and pain interact on many levels of the neuraxis. In healthy subjects, activation of the SNS in the brain usually suppresses pain mainly by descending inhibition of nociceptive transmission in the spinal cord. Furthermore, some experimental data even suggest that the SNS might control peripheral inflammation and ...
Frank Birklein, Tanja Schlereth
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The sympathetic nervous system and atherosclerosis
Journal of Neurosurgery, 1987✓ Morphometric and chemical changes in the arterial wall were studied after 12 months of diet-induced atherosclerosis in rhesus monkeys treated with either bilateral surgical thoracic sympathectomy or propranolol. There was a marked reduction in the progression of atherosclerosis in the carotid arteries and a moderate reduction in the disease found in ...
Draga Vesselinovitch +5 more
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The Effects of the Sympathetic Nervous System on Accommodation
Archives of Ophthalmology, 1972The effects of beta sympathetic drugs on positive accommodation (accommodation for near vision) were studied in vervet monkeys. Isoproterenol, a beta sympathetic stimulator, depressed the positive accommodation function. It was not a complete antagonist since 3 to 4 diopters of accommodation remained.
Jacob Davidowitz +3 more
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Surgery of the Sympathetic Nervous System
The Journal of Spinal Cord Medicine, 1996This article reviews the innervation of the arterial system of the lower extremity, lumbar sympathectomy in vascular surgery, lumbar sympathectomy for digital gangrene and in the prevention of major amputation of the lower extremity and substance P's role in neurogenic inflammatory modulation.
Aquino-Chu G +3 more
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Renin and the Sympathetic Nervous System
1974Fig. 1, from a review by Davis [1], is shown as a useful frame of reference to indicate the two basic mechanisms which have alternatively been suggested as responsible for stimulating the juxtaglomerular apparatus to secrete or release renin. The so-called stretch-receptor or baroceptor hypothesis, first advanced by Tobian [2] and by Skinner, McCubbin ...
A. Stella, A. Zanchetti
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Be sympathetic to your nervous system
Journal of Applied Physiology, 2012the influence of the sympathetic nervous system in the regulation of cardiovascular function has been recognized since antiquity. Early reports of the so called “vegetative nervous system” were based largely on anatomical observations ([1][1]).
Kaushik P. Patel +2 more
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Southern Medical Journal, 1994
Both aging and exercise are associated with alterations in regulation of catecholamines. With aging, elevated circulating catecholamines at rest and after stress may result in increased sympathetic nervous system activity. The ability of the catecholaminergic system of older subjects to respond and adapt to environmental challenges is altered during ...
N T, Scarpace, D T, Lowenthal
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Both aging and exercise are associated with alterations in regulation of catecholamines. With aging, elevated circulating catecholamines at rest and after stress may result in increased sympathetic nervous system activity. The ability of the catecholaminergic system of older subjects to respond and adapt to environmental challenges is altered during ...
N T, Scarpace, D T, Lowenthal
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Peptides and the sympathetic nervous system
Pharmacological Research Communications, 1969Several workers have observed that under certain conditions kinins, although acting directly on blood vessels causing vasodilatation to produce hypotension, sometimes increase arterial blood pressure as well. Croxatto, Belmar, Pereda and Labacea (1962) reported such an effect when bradykinin was injected into rats with low blood pressure. These authors
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The sympathetic nervous system and cancer
Experimental Neurology, 1974Abstract A chemically induced, transplantable rat tumor took and grew at all sites but when conjugated with phosphorylcholine appeared to alter its antigenic configuration in such manner as to grow at sites of immunological privilege only. After chemical sympathectomy, the previously tumor-resistant tissues became receptive to grafts of tumor ...
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