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Narcolepsy is a chronic neurological disorder that impairs the ability to regulate sleep–wake cycles, and specifically impacts REM (rapid eye movement) sleep. [1] The pentad symptoms of narcolepsy include excessive daytime sleepiness (EDS), sleep-related hallucinations, sleep paralysis, disturbed nocturnal sleep (DNS), and cataplexy. [1]
Narcolepsy with cataplexy is considered an autoimmune-mediated disorder, so some therapies based on this hypothesis have been developed. Immunological therapies developed include: [ 20 ] Corticosteroids : after testing in 1 human and 1 canine case it proved to be ineffective so is less likely to be further used.
This condition was first discovered in 1995 by Melberg et al. when they described 5 members of a 4-generation Swedish family where cerebellar ataxia and sensorineural deafness presented as an autosomal dominant trait, 4 of them had narcolepsy and 2 had diabetes mellitus. The oldest members had psychiatric symptoms, neurological anomalies, and ...
Orexin (/ ɒ ˈ r ɛ k s ɪ n /), also known as hypocretin, is a neuropeptide that regulates arousal, wakefulness, and appetite. [5] It exists in the forms of orexin-A and orexin-B.The most common form of narcolepsy, type 1, in which the individual experiences brief losses of muscle tone ("drop attacks" or cataplexy), is caused by a lack of orexin in the brain due to destruction of the cells ...
Pediatric narcolepsy cases are cases when patients are diagnosed or experience symptoms onset for narcolepsy before the age of 18. Of patients who obtain a formal diagnosis for narcolepsy, more than 50% report first experiencing symptoms of narcolepsy more than 10 years before their formal diagnosis, with an average age of symptom onset being at age 15 and symptom onset most likely to occur ...
Patients with narcolepsy are diagnosed as either type 1 or type 2, with only the former presenting cataplexy symptoms. [58] Type 1 narcolepsy results from the loss of approximately 70,000 orexin -releasing neurons in the lateral hypothalamus , leading to significantly reduced cerebrospinal orexin levels; [ 59 ] [ 60 ] this reduction is a ...
This category is for article related with Narcolepsy. Subcategories. This category has the following 2 subcategories, out of 2 total. N. Narcolepsy in fiction (4 P) P.
Neurotensin receptor type 1 is a protein that in humans is encoded by the NTSR1 gene. [5] [6] For a crystal structure of NTS1, see pdb code 4GRV.In addition, high-resolution crystal structures have been determined in complex with the peptide full agonist NTS8-13, the non-peptide full agonist SRI-9829, the partial agonist RTI-3a, and the antagonists / inverse agonists SR48692 and SR142948A, as ...
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