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Elevated levels of circulating trace amines in primary headaches.
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BACKGROUND
Trace amines, including tyramine, octopamine, and synephrine, are closely related to classic biogenic amines. They have been hypothesized to promote migraines and other types of primary headaches, but there is no direct evidence supporting this hypothesis.
METHODS
Using a multichannel
Elusive amines and primary headaches: historical background and prospectives.
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Although the role of trace amines such as tyramine, octopamine and synephrine in the pathogenesis of migraine has been debated for decades, this issue remains still unresolved. In spite of a relevant body of work, the inability to demonstrate specific receptors for these compounds and the lack of
Elusive amines and cluster headache: mutational analysis of trace amine receptor cluster on chromosome 6q23.
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Cluster headache (CH) is characterised by unilateral pain and ipsilateral autonomic features. To date, no molecular genetic evidence has been shown for CH. Small pedigrees and low penetrance render the identification of the CH-gene quite difficult. Nonetheless the association of CH and migraine to a
Contributions of biochemistry to the pathogenesis of primary headaches.
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We briefly summarise biochemical anomalies of serotonin, norepinephrine, glutamic and aspartic acids, the main neurotransmitters of inhibitory and excitatory neuronal circuitries, found in primary headaches and their relationship with pathogenesis of migraine and cluster headache (CH). In addition,
Acute consumption of p-synephrine does not enhance performance in sprint athletes.
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P-Synephrine is a protoalkaloid widely used as an ergogenic aid in sports. This substance has been included in the World Anti-Doping Agency monitoring program, although scientific information about its effects on performance and athletes' well-being is scarce. The purpose of this investigation was
Biochemistry of neuromodulation in primary headaches: focus on anomalies of tyrosine metabolism.
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Recent studies have suggested that abnormalities of dopamine and trace amines (tyramine, octopamine, and synephrine), products of tyrosine metabolism, may constitute the metabolic events that predispose to the occurrence of cluster headache (CH) and migraine attacks. This hypothesis is supported by
Abnormal tyrosine metabolism in chronic cluster headache.
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Objective Episodic cluster headache is characterized by abnormalities in tyrosine metabolism (i.e. elevated levels of dopamine, tyramine, octopamine and synephrine and low levels of noradrenalin in plasma and platelets.) It is unknown, however, if such biochemical anomalies are present and/or
Biochemistry of primary headaches: role of tyrosine and tryptophan metabolism.
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The pathogenesis of migraine as well as cluster headache (CH) is yet a debated question. In this review, we discuss the possible role of the of tyrosine and tryptophan metabolism in the pathogenesis of these primary headaches. These include the abnormalities in the synthesis of neurotransmitters:
Abnormal platelet trace amine profiles in migraine with and without aura.
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Trace amines, including tyramine, octopamine and synephrine, are closely related to classic biogenic amines. In one study, where these substances were found elevated in plasma of migraineurs, it was hypothesized that trace amine metabolism is deranged in migraine. To confirm these findings, we
Hypertensive Urgency Associated With Xenadrine EFX Use.
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Several supplements and herbal products have been shown to increase catecholamines and subsequently mean arterial pressure and systemic vascular resistance. Since ephedra-containing products have been removed from the market, manufacturers of weight loss herbal supplements must produce ephedra-free
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