Affiliations: [a] Department of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany | [b] Geriatric Center, University of Tuebingen, Tuebingen, Germany | [c] Department of Internal Medicine III-Cardiology, University of Tuebingen, Tuebingen, Germany
Correspondence:
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Corresponding author: Dr. Christoph Laske, Department of Psychiatry and Psychotherapy, University of Tuebingen, Osianderstr. 24, D-72076 Tuebingen, Germany. Tel.: +49 7071 2983444; Fax: +49 7071 294141; E-mail: christoph.laske@med.uni-tuebingen.de.
Abstract: Alzheimer's disease (AD) is characterized by massive neuronal cell loss in the brain. Granulocyte-colony stimulating factor (G-CSF) is a hematopoietic growth factor that promotes neuroprotective effects and supports neurogenesis in the brain. In the present study, we found significantly lower G-CSF plasma levels in 50 early AD patients in comparison with 50 age-matched healthy controls. In AD patients, G-CSF levels showed a significant inverse correlation with amyloid-β (Aβ1-42) levels in cerebrospinal fluid, but not with levels of tau protein in cerebrospinal fluid or Mini-Mental Status Examination scores. In addition, G-CSF plasma levels were significantly inversely correlated with age in AD patients and healthy controls. In conclusion, decreased G-CSF plasma levels in early AD patients may contribute to a deficient hematopoietic brain support with putative pathogenic relevance. Further studies are needed to examine whether a modulation of hematopoietic growth factors such as G-CSF could be a promising new therapeutic strategy for AD.
