narcolepsy/tyrosine

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L-tyrosine in the treatment of narcolepsy.

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Narcolepsy is a disorder characterized by the sudden urge to sleep. The biochemical etiology of this disorder is believed to be due to dopamine abnormalities. Since the precursor of dopamine is L-tyrosine, the administration of this amino acid may prove beneficial in the treatment of narcolepsy.

Treatment of narcolepsy with L-tyrosine.

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8 patients with narcolepsy were treated with oral tyrosine. Within six months all were free from daytime sleep attacks and cataplexy.

Treatment of narcolepsy with L-tyrosine: double-blind placebo-controlled trial.

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A randomised, double-blind, placebo-controlled study of L-tyrosine was done in ten subjects with narcolepsy and cataplexy. Of twenty-eight visual analogue scales rating mood and arousal, the subjects' ratings in the tyrosine treatment (9 g daily) and placebo periods differed significantly for only

Narcolepsy in a 2-year-old boy.

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This report describes the prospective follow-up of a 2-year-old child with narcolepsy. The initial clinical diagnosis was confirmed by the onset of cataplexy when the child was 5 years old. He does not have the HLA genotype characteristic of narcolepsy or an identifiable brain lesion, although he

[L-tyrosine: a long term treatment of Parkinson's disease].

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That l-dopa represents a major advance in Parkinson treatment should not hide that a number of problems remain unanswered: on-off effects, transient improvements... Based on the beneficial effects of l-tyrosine in dopamine dependent depressions and narcolepsy, five naive patients diagnosed after

Insomnia following hypocretin2-saporin lesions of the substantia nigra.

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The neuropeptide hypocretin, also known as orexin, has been implicated in waking since its deletion leads to the sleep disorder narcolepsy. Hypocretin neurons project to major arousal areas, and in an effort to determine which region is responsible for the changes in sleep-wake architecture we have

Hypocretin1/OrexinA-containing axons innervate locus coeruleus neurons that project to the Rat medial prefrontal cortex. Implication in the sleep-wakefulness cycle and cortical activation.

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The Hypocretin1/OrexinA (Hcrt1/OxA) neuropeptides are found in a group of posterolateral hypothalamus neurons and are involved in sleep-wakefulness cycle regulation. Hcrt1/OxA neurons project widely to brainstem aminergic structures, such as the locus coeruleus (LC), which are involved in

Mesopontine organization of cholinergic and catecholaminergic cell groups in the normal and narcoleptic dog.

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Canine narcolepsy is a unique experimental model of a human sleep disorder characterized by excessive daytime sleepiness and cataplexy. There is a consensus recognition of an imbalance between cholinergic and catecholaminergic systems in narcolepsy although the underlying mechanisms remain poorly

Progressive changes of orexin system in a rat model of 6-hydroxydopamine-induced Parkinson's disease.

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OBJECTIVE Sleep disturbance, which is characterized by excessive daytime sleepiness and sleep attacks, is frequently observed in patients with Parkinson's disease (PD). Loss of orexin neurons in hypothalamus and the resultant decreased level of orexin in cerebrospinal fluid (CSF) found in narcolepsy

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