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Excessive Daytime Sleepiness and Low CSF Orexin-A/Hypocretin―I Levels in a Patient with probable Progressive Supranuclear Palsy Yuko Hattori 1 , Tatsuya Hattori 1 , Ei-ichiro Mukai 2 , Hideo Mori 3 , Yoshikuni Mizuno 3 , Yuhei Kayukawa 4 , Tamotsu Okada 5 , Takashi Kanbayashi 6 1Honmachi Neurological Clinic 2Department of Neurology, National Nagoya Hospital 3Department of Neurology, Juntendo University School of Medicine 4Department of Health Support Center, Nagoya Institute of Technology 5Okada Clinic 6Department of Neuropsychiatry, Akita University School of Medicine Keyword: excessive daytime sleepiness , progressive supranuclear palsy , orexin A , hypocretin I , narcolepsy pp.1053-1056
Published Date 2003/12/1
DOI https://doi.org/10.11477/mf.1406100574
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Abstract

We report a 74-year-old woman with excessive daytime sleepiness(EDS)who were diagnosed as probable progressive supranuclear palsy(PSP). Her EDS mimicked narcolepsy without cataplexy, because multiple sleep latency tests showed short latencies, human leukocyte antigen testing was positive for DR2/DQB1,and orexin A(hypocretin-I)concentration in her cerebrospinal fluid was undetectable. In PSP, neurofibrillary tangles ap pears in the hypothalamus, neuronal loss and gliosis are seen in a number of pontine and mesencephalic tegmental nuclei, substantia nigra, locus caeruleus. These neuropathological changes of PSP may cause decreased pre- or post-synaptic hypothalamic orexin neurotrasmission because orexin neurons are located in the hypothalamus and project widely to the forebrain and the brain stem. In our patient, the treatment with methylphenidate HCl was effective on EDS.

(Received : September 22, 2003)


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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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