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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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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