Cerebrospinal Fluid (CSF) 25-Hydroxyvitamin D Concentration and CSF Acetylcholinesterase Activity Are Reduced in Patients with Alzheimer's Disease

• Per Johansson,

  Affiliations Department of Neuropsychiatry, Skaraborg Central Hospital, Falköping, Sweden, Department of Internal Medicine, Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden

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• Erik G. Almqvist,

  Affiliation Department of Endocrinology, Skaraborg Central Hospital, Skövde, Sweden

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• Jan-Ove Johansson,

  Affiliation Department of Internal Medicine, Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden

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• Niklas Mattsson,

  Affiliations Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden, Center for Imaging of Neurodegenerative Diseases, VA Medical Center, University of California San Francisco, San Francisco, California, United States of America

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• Ulf Andreasson,

  Affiliation Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden

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• Oskar Hansson,

  Affiliation Clinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Malmö, Sweden

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• Anders Wallin,

  Affiliation Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden

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• Kaj Blennow,

  Affiliation Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden

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• Henrik Zetterberg,

  Affiliations Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden, UCL Institute of Neurology, Queen Square, London, United Kingdom

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• Johan Svensson

  * E-mail: johan.svensson@medic.gu.se

  Affiliations Department of Internal Medicine, Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden, Department of Endocrinology, Skaraborg Central Hospital, Skövde, Sweden

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