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Página 1 a partir de 46 resultados
High intake of dietary tyramine does not deteriorate glucose handling and does not cause adverse cardiovascular effects in mice.
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Tyramine is naturally occurring in food and induces pressor responses. Low-tyramine diets are recommended for patients treated with MAO inhibitors to avoid the fatal hypertensive crisis sadly known as "cheese effect". Hence, tyramine intake is suspected to have toxicological consequences in humans,
The effect of tyramine during Wallerian degeneration of adrenergic fibers.
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May probable cause of hypertension in hypertensive disorders of pregnancy be over expressing tyramine depending deterioration of microbiota composition.
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Isolation, cloning, and tissue expression of a putative octopamine/tyramine receptor from locust visceral muscle tissues.
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Octopamine has been shown to play major roles in invertebrate nervous systems as a neurotransmitter, neuromodulator, and neurohormone. Tyramine is the biochemical precursor of octopamine and its neuromodulatory role is now being investigated and clarified in invertebrates, particularly in insects.
Attenuated pre-ejection period response to tyramine in patients with cardiac sympathetic denervation.
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Stress is a well-known factor affecting cardiac contractility through the cardiac sympathetic nerves. A positive inotropic effect of the cardiac sympathetic nerves on the myocardium is reflected by pre-ejection period (PEP) shortening. Patients with Parkinson disease (PD) and neurogenic orthostatic
Systemic postganglionic adrenergic studies do not distinguish Parkinson's disease from multiple system atrophy.
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BACKGROUND
Multiple system atrophy (MSA) affects the preganglionic adrenergic neuron and Parkinson's disease (PD) involves the postganglionic counterpart. Widespread postganglionic denervation should result in denervation supersensitivity and a failure of the axon to release norepinephrine (NE). We
Differential interaction of 1-methyl-4-phenylpyridinium ion with the putatively vesicular binding site of [3H]tyramine in dopaminergic and nondopaminergic brain regions.
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The neurotoxin 1-methyl-4-phenylpyridinium ion (MPP+) in the brain striatum has recently been shown to bind at a putatively vesicular site labeled by [3H]tyramine ([3H]TY). Whereas in the rat and mouse striatum MPP+ antagonized TY binding competitively, in the cerebellum there was a mixed-type
Enhanced toxicity to the catecholamine tyramine in polyglutamine transfected SH-SY5Y cells.
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Huntington's disease (HD) is a progressive neurodegenerative disorder, of which the pathogenesis is not completely understood. In patients with Huntington's disease, there is a mutation in the gene encoding the protein huntingtin, which results in an expanded polyglutamine sequence leading to
Detection of protein oxidation in endothelial cells by fluorescently labelled tyramine.
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BACKGROUND
Endothelial cell injury mediated by activated polymorphonuclear leucocytes (PMN) occurs during inflammation or reperfusion after brain ischemia. Protein oxidation caused by activated PMN may lead to functional disturbances, degeneration and death of the endothelial cells. The aim of this
[A case of progressive hemifacial atrophy with Pourfour de Petit syndrome which was successfully treated by stellate ganglion block].
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We herein report a 31-year-old woman with progressive hemifacial atrophy. The atrophy at her left face began about ten years ago. She had been in a traffic accident one year before the onset of her facial atrophy. Neurological examination revealed anisocoria (right < left) and retraction of the left
Characterization of tyramine beta-hydroxylase in planarian Dugesia japonica: cloning and expression.
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The planarian Dugesia japonica has a relatively well-organized central nervous system (CNS) consisting of a brain and ventral nerve cords (VNCs), and can completely regenerate it CNS utilizing pluripotent stem cells present in the mesenchymal space. This remarkable capacity has begun to be exploited
Acute and subacute toxicity of tyramine, spermidine, spermine, putrescine and cadaverine in rats.
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The acute and subacute toxicity of five biogenic amines-tyramine, spermidine, spermine, putrescine and cadaverine-were examined in Wistar rats. Tyramine and cadaverine had a low acute oral toxicity of more than 2000 mg/kg body weight. Putrescine had an acute oral toxicity of 2000 mg/kg body weight
Susceptibility of dry-cured tuna to oxidative deterioration and biogenic amines generation: I. Effect of NaCl content, antioxidant type and ageing.
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This study aimed to assess lipid oxidation and biogenic amine (BA) development in "muxama", a dry-cured tuna muscle product, as affected by salt content, antioxidant type and ageing time. Overall, BA contents decreased with NaCl level (2785.1mgkg-1, 1148.1mgkg-1 and 307.7mgkg-1) and increased with
Determination of reactive oxygen species associated with the degeneration of dopaminergic neurons during dopamine metabolism.
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Oxidative stress is believed to be an important mechanism underlying dopamine-induced neuronal damage. This study provides X-band electron spin resonance (ESR) spectroscopic evidence for reactive oxygen species (ROS) generation during dopamine metabolism. The authors induced excess dopamine
Idiopathic orthostatic hypotension from failure of noradrenaline release in a patient with vasomotor innervation.
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A 26 year old man is described with life-long orthostatic hypotension unrelated to autonomic nerve degeneration and apparently due to failure of peripheral noradrenaline realese. Tests of parasympathetic and sympathetic cholinergic nerve function were normal, but sympathetic adrenergic activity was
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