migraine disorders/tyrosine

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The role of tyrosine metabolism in the pathogenesis of chronic migraine.

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OBJECTIVE The pathogenesis of chronic migraine (CM) remains largely unknown. We hypothesized that anomalies of tyrosine metabolism, found in migraine without aura (MwwA) patients, play an important role in the transformation of MwwA into CM, since the increase in the number of MwwA attacks is the

Cerebrospinal fluid tyrosine and 3,4-dihydroxyphenylacetic acid levels in migraine patients.

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We studied biochemical parameters related with central dopaminergic neurotransmission in migraine patients during crisis. We determined tyrosine and 3,4-dihydroxyphenylacetic acid (DOPAC) levels in cerebrospinal fluid (CSF) of 47 patients, 29 suffering migraine without aura and 18 suffering migraine

PTEN inhibition preserves trigeminal nucleus caudalis neuron activation through tyrosine phosphorylation of the NR2B subunit at Tyr1472 of the NMDA receptor in a rat model of recurrent migraine.

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OBJECTIVE Activation of the trigeminal nucleus caudalis is believed to be involved in the pathomechanism of migraine. Evidence suggests that N-methyl-d-aspartate receptor subtype 2B tyrosine phosphorylation, originating from the trigeminal nucleus caudalis neuron dysfunction, might be a triggering

Tyrosine Phosphorylation of NR2B Contributes to Chronic Migraines via Increased Expression of CGRP in Rats.

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Tyrosine phosphorylation of NR2B (NR2B-pTyr), a subunit of the N-methyl-D-aspartate (NMDA) receptor, has been reported to develop central sensitization and persistent pain in the spine, but its effect in chronic migraines has not been examined. We hypothesized that tyrosine phosphorylation of NR2B

Study of tyrosine metabolism in eating disorders. Possible correlation with migraine.

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In order to understand the possible role of tyrosine metabolism and in particular that of elusive amines in the pathogenesis of eating disorders (ED), we measured the plasma levels of dopamine, noradrenaline, tyramine (Tyr) and octopamine (Oct) in a large group of anorexic and bulimic patients. In

Amino acids in the saliva of patients with migraine.

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There are a number of hypotheses concerning the pathogenesis of migraine, but they are frequently conflicting. In addition to the vascular hypothesis, clinical data are available that excitatory amino acids may play an important role in the development of the disease. In this study, free amino acid

Anti-migraine and anti-depression activities of Tianshu capsule by mediating Monoamine oxidase.

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BACKGROUND Tianshu capsule(TSC)is a Chinese patent medicine. It's widely used to treat migraine clinically in China. OBJECTIVE In the present study, we investigated anti-migraine and anti-depression activities of TSC using in vivo animal models together with in vitro studies to investigate the

A prospective pilot study of the effect on catecholamines of mindfulness training vs pharmacological prophylaxis in patients with chronic migraine and medication overuse headache.

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Aim To address whether, in patients with chronic migraine and medication overuse headache, mindfulness-based treatment is associated with changes in plasma levels of catecholamines and elusive amines that are similar to those observed in patients undergoing pharmacological prophylaxis. Methods In

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

The synthesis and SAR of calcitonin gene-related peptide (CGRP) receptor antagonists derived from tyrosine surrogates. Part 1.

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We have systematically studied the effects of varying the central unnatural amino acid moiety on CGRP receptor antagonist potency and CYP inhibition in a series of ureidoamides. In this Letter, we report the discovery of compound 23, a potent CGRP receptor antagonist with only weak CYP3A4

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

RNA expression profiling in brains of familial hemiplegic migraine type 1 knock-in mice.

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BACKGROUND Various CACNA1A missense mutations cause familial hemiplegic migraine type 1 (FHM1), a rare monogenic subtype of migraine with aura. FHM1 mutation R192Q is associated with pure hemiplegic migraine, whereas the S218L mutation causes hemiplegic migraine, cerebellar ataxia, seizures, and

Look beyond Catechol-O-Methyltransferase genotype for cathecolamines derangement in migraine: the BioBIM rs4818 and rs4680 polymorphisms study.

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BACKGROUND The study of COMT gene polymorphisms in migraine could be of particular interest since impaired catecholaminergic neurotransmission, namely chronic dopaminergic and noradrenergic hypofunction, is a peculiar migraine trait. In this study, for the first time, we focused on the role of COMT

Role of tyrosine kinase in serotonin-induced constriction of the basilar artery in vivo.

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OBJECTIVE Serotonin is one of the most potent constrictors of cerebral blood vessels and is implicated in several pathological conditions, including migraine and cerebral ischemia. Recent evidence has suggested that tyrosine kinase is involved in vasocontractile responses. The objective of this

Pathogenesis of migraine: role of neuromodulators.

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The pathogenesis of migraine is still, today, a hotly debated issue. Recent biochemical studies report the occurrence in migraine of metabolic abnormalities in the synthesis of neurotransmitters and neuromodulators. These include a metabolic shift directing tyrosine metabolism toward the

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