alkaloid/headache

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Ergot alkaloids block neurogenic extravasation in dura mater: proposed action in vascular headaches.

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Although the ergot alkaloids (ergots) are useful drugs for the acute treatment of migraine headaches, their mechanism of action remains obscure. When administered to rats in clinically relevant doses, ergots blocked the development of neurogenic plasma extravasation in dura mater. Plasma

Medication overuse headache: a focus on analgesics, ergot alkaloids and triptans.

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Medication overuse headache (MOH, formerly known as drug-induced headache) is a well known disorder following the frequent use of analgesics or any other antiheadache drug including serotonin 5-HT(1B/D) agonists (triptans). Recent studies suggest clinical features of MOH depend on the substance

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

Simultaneous determination of three alkaloids, four ginsenosides and limonin in the plasma of normal and headache rats after oral administration of Wu-Zhu-Yu decoction by a novel ultra fast liquid chromatography-tandem mass spectrometry method: application to a comparative pharmacokinetics and ethological study.

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A novel, sensitive and reliable ultra fast liquid chromatography-tandem mass spectrometry (UFLC-MS/MS) method has been developed and validated for simultaneous quantitation of eight main active ingredients (evodiamine, rutaecarpine, dehydroevodiamine, limonin, ginsenoside Rb1, Rd, Re and Rg1) in rat

[Prophylactic and symptomatic treatment of headache with ergot alkaloids].

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Effect of hydrogenated alkaloids of ergot on hypertensive headaches.

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[Therapy of chronic headache with ergot alkaloids].

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[The treatment of vasomotor headache with secale alkaloids].

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Risk factors for headache recurrence after sumatriptan: a study in 366 migraine patients.

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Headache recurrence (HR) is the major limitation of sumatriptan in the acute treatment of migraine attacks. The risk of HR is mainly patient-dependent. We analyzed, in 366 migraine patients, clinical differences between patients who always have HR and patients who never have HR. We found remarkably

In Vitro Metabolism Evaluation of the Ergot Alkaloid Dihydroergotamine: Application of Microsomal and Biomimetic Oxidative Model.

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Dihydroergotamine is a semisynthetic natural product derived from ergotamine, an ergot alkaloid. It is used to treat migraines, a neurological disease characterized by recurrent moderate to severe headaches. In this work, the in vitro metabolism of dihydroergotamine was evaluated in a biomimetic

Neurovascular and molecular mechanisms in migraine headaches.

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This chapter reviews the evidence that challenges traditional and unproven notions which perpetuate the singular importance of constriction and dilation to the genesis of migraine pain. New data in experimental laboratory models suggest that migraine headache may develop primarily from

Analgesic/abortive overuse and misuse in chronic daily headache.

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The frequent use (> 15 times/month) of medication for the treatment of acute migraine attacks may cause medication overuse headache. This kind of headache can be caused by the intake of combination analgesics, opioids, ergot alkaloids, and triptans. The delay between first intake and daily headache

Medication overuse headache.

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The frequent use (>15 times/month) of medication for the treatment of acute migraine attacks may cause medication overuse headache. This kind of headache can be caused by the intake of a combination of analgesics, opioids, ergot alkaloids and triptans. The delay between first intake and these

[Cluster headache].

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Cluster headache is a defined disorder which is often mistaken in spite of its characteristic picture. The different types of cluster headache and their clinical symptoms are reviewed in detail. Predisposing factors, frequency of other medical disorders as well as personal and psychological

[Ergotism due to simultaneous use of ergot alkaloids and high activity antiretroviral therapy].

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High activity antiretroviral therapy may exacerbate the activity of ergot alkaloids due to an inhibition of cytochrome P450. We report a 57 years old female with AIDS treated with lamivudine, zidovudine, atazanavir, ritonavir and cotrimoxazole presenting with ischemic signs in the four limbs. There

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