Decreased cerebrospinal fluid orexin levels not associated with clinical sleep disturbance in Parkinson’s disease: A retrospective study

• Takuya Ogawa,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Validation, Visualization, Writing – original draft

  Affiliations Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan, Department of Neurology, Morinomiya Hospital, Osaka, Japan

  https://orcid.org/0000-0002-3118-547X

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• Yuta Kajiyama,

  Roles Conceptualization, Investigation, Methodology, Project administration, Writing – review & editing

  Affiliation Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan

  https://orcid.org/0000-0001-7170-0758

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• Hideaki Ishido,

  Roles Resources

  Affiliations International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan, Department of Neurology, Dokkyo Medical University Saitama Medical Center, Mibu, Japan

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• Shigeru Chiba,

  Roles Resources

  Affiliations International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan, Ibaraki Prefectural Medical Center of Psychiatry, Kasama, Japan

  https://orcid.org/0000-0001-9458-5713

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• Gajanan S. Revankar,

  Roles Data curation, Formal analysis, Methodology, Writing – review & editing

  Affiliation Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan

  https://orcid.org/0000-0002-3753-4140

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• Tomohito Nakano,

  Roles Data curation, Formal analysis, Methodology

  Affiliation Department of Neurology, Higashiosaka City Medical Center, Osaka, Japan

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• Seira Taniguchi,

  Roles Formal analysis, Writing – review & editing

  Affiliation Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan

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• Takashi Kanbayashi,

  Roles Conceptualization, Resources, Supervision

  Affiliations International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan, Ibaraki Prefectural Medical Center of Psychiatry, Kasama, Japan

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• Kensuke Ikenaka ,

  Roles Conceptualization, Investigation, Methodology, Project administration, Resources, Supervision, Writing – review & editing

  * E-mail: ikenaka@neurol.med.osaka-u.ac.jp (KI); hmochizuki@neurol.med.osaka-u.ac.jp (HM)

  Affiliation Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan

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• Hideki Mochizuki

  Roles Conceptualization, Funding acquisition, Supervision, Writing – review & editing

  * E-mail: ikenaka@neurol.med.osaka-u.ac.jp (KI); hmochizuki@neurol.med.osaka-u.ac.jp (HM)

  Affiliation Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan

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