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Cerebrospinal fluid concentrations of peptides derived from chromogranin B and secretogranin II are decreased in multiple sclerosis.

Journal article
Authors Niklas Mattsson
Ulla Rüetschi
Vladimir N Podust
Mats Stridsberg
Susann Li
Oluf Andersen
Sara Haghighi
Kaj Blennow
Henrik Zetterberg
Published in Journal of Neurochemistry
Volume 103
Issue 5
Pages 1932-1939
ISSN 0022-3042
Publication year 2007
Published at Institute of Neuroscience and Physiology, Department of Clinical Neuroscience and Rehabilitation
Institute of Biomedicine, Department of Clinical Chemistry and Transfusion Medicine
Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
Pages 1932-1939
Language en
Subject categories Neurochemistry


Novel biomarkers for multiple sclerosis (MS) could improve diagnosis and provide clues to pathogenesis. In this study surface-enhanced laser desorption/ionization time-of-flight mass spectrometry was used to analyze protein expression in CSF from 46 MS patients, 46 healthy siblings to the patients, and 50 unrelated healthy controls. Twenty-four proteins in the mass range 2-10 kDa were expressed at significantly different levels (p < 0.01) in a robust manner when comparing the three groups. Identities of three proteins were determined using biochemical purification followed by tandem mass spectrometric analysis. Immunoprecipitation experiments confirmed the identities for two peptides derived from chromogranin B (m/z 6252) and from secretogranin II (m/z 3679). These peptides were all decreased in MS when compared with siblings or controls. Radioimmunoassays specific for each peptide confirmed these differences. The lowered concentrations did not correlate to the axonal damage marker neurofilament light protein and may thus reflect functional changes rather than neurodegeneration. Further studies will investigate the involvement of these peptides in MS pathogenesis.

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