vascular headaches/serotoninas

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[Vascular headache, thrombopenia and serotonin metabolism].

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The role of platelet serotonin in migraine remains a subject of controversy. However, the frequency of association of migraine with antibody-mediated thrombocytopenia would suggest that platelet dysfunction or impaired serotonin metabolism might play a role in migrainous attack. We report three new

[OBSERVATIONS ON THE BEHAVIOR OF SEROTONIN AND HISTAMINE IN THE BLOOD OF PATIENTS WITH VASCULAR HEADACHE].

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The serotonin antagonist 1-methyl-D-lysergic acid butanolamine (UML-491) or methysergide ('Deseril'), its pharmacodynamics and effects on 'migraine type' vascular headaches.

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Serotonin and migraine.

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Migraine has long been considered as a "vascular headache" but clearly neurological mechanisms are involved. The pathophysiology appears to somehow involve serotonin, both peripherally and centrally, but its involvement may be just epiphenomenal. Adding to the enigma it is apparent that many of the

Serotonin inhibits trigeminal nucleus activity evoked by craniovascular stimulation through a 5HT1B/1D receptor: a central action in migraine?

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The development of serotonin (5HT1B/1D) agonists as treatments for the acute attack of migraine has resulted in considerable interest in their mechanism of action and, to some extent, renewed interest in the role of serotonin (5-hydroxytryptamine; 5HT) in the disorder. The initial synthesis of this

Basic mechanisms in vascular headache.

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To better understand and treat painful conditions, one needs to identify the cause, discover the source, and develop knowledge of peripheral and central pain transmission; headaches are no exception. The development of appropriate animal models is important. Accordingly, we have reviewed the

Sumatriptan: a new drug for vascular headache.

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The role of serotonin in the pathogenesis of migraine is discussed, and the chemistry, pharmacology, pharmacokinetics, efficacy, adverse effects, and dosage and administration of sumatriptan are reviewed. Sumatriptan, which is structurally related to the neurotransmitter serotonin, is a serotonin

Neurogenically mediated plasma extravasation in dura mater: effect of ergot alkaloids. A possible mechanism of action in vascular headache.

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C-fiber-dependent neurogenic plasma extravasation developed in the dura mater but not the brain after electric stimulation of the rat trigeminal ganglion or after chemical stimulation of perivascular axons with intravenous capsaicin, a drug that depolarizes sensory nerve fibers. C-fiber-independent

[Ergotamine poisoning: a case study].

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Ergotamine is a well known pharmacological remedy applied in neurology (treatment of vascular headache) and in obstetrics (abortive remedy, uterus atony). But today it is rarely used, because of new safer anti-migraine medicine (triptanes) which cause fewer side effects. According to obstetrical

Preclinical neuropharmacology of naratriptan.

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The basic CNS neuropharmacology of naratriptan is reviewed here. Naratriptan is a second-generation triptan antimigraine drug, developed at a time when CNS activity was thought not to be relevant to its therapeutic effect in migraine. It was, however, developed to be a more lipid-soluble, more

Sumatriptan-associated myocardial infarction: report of case with attention to potential risk factors.

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Vascular headaches are a relatively common phenomenon. Increasing numbers of patients with headache are being considered for treatment with the selective serotonin-receptor agonist sumatriptan succinate because of its potential for pronounced therapeutic efficacy in selected patients.

Vascular responses of dura mater.

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The goal of this study was to examine vascular responses of the dura mater. Microspheres were used to measure blood flow to the dura and brain in anesthetized dogs. Under control conditions, blood flow to the dura was 38 +/- 3 (SE) ml.min-1.100 g-1. Values for blood flow to the dura obtained with

LiverTox: Clinical and Research Information on Drug-Induced Liver Injury

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The triptans are a group of serotonin receptor agonists that are useful in the therapy of vascular headaches and migraine. The triptans are generally used in low doses for a limited period of time and have not been associated with serum enzyme elevations, but some have been implicated in rare

NE inhibits cerebrovascular mast cell exocytosis induced by cholinergic and peptidergic agonists.

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Autonomic and sensory nerves frequently contact mast cells contained in rabbit leptomeningeal arteries. We have previously shown that parasympathetic and peptidergic neurotransmitters can stimulate mast cell granule exocytosis and serotonin (5-HT) release. In the present study, we examined ex vivo

Wine and headache.

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Headache can be induced by histamine in wine in patients suffering from histamine intolerance, a disease characterized by impaired histamine degradation based on reduced diamine oxidase activity or a lack of the enzyme. Diamine oxidase is localized in the jejunal mucosa and is the most important

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