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Proteome analysis of cerebrospinal fluid proteins in Alzheimer patients
Pia Davidsson1, Ann Westman-Brinkmalm, Carol L Nilsson
1Department of Clinical Neuroscience, Experimental Neuroscience Section, Göteborg University, Sahlgrenska University Hospital/Mölndal, SE-431 80, Sweden.
Abstract:
By comparing the CSF proteome between Alzheimer disease (AD) patients and controls it may be possible to identify proteins that play a role in the disease process and thus to study the pathogenesis of AD. We used mini-gel technology in a two-dimensional electrophoresis procedure, sensitive SYPRO Ruby staining and mass spectrometry for clinical screening of disease-influenced CSF proteins in 15 AD patients and 12 controls. The levels of six proteins and their isoforms, including proapolipoprotein, apolipoprotein E, beta-2 microglobulin, retinol-binding protein, transthyretin, and ubiquitin, were significantly altered in CSF of AD patients. The most prominently altered proteins were the apolipoproteins, especially proapolipoprotein.