Detection of complement factor B in the cerebrospinal fluid of patients with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy disease using two-dimensional gel electrophoresis and mass spectrometry

Mustafa Ünlü, Robert P.J. De Lange, Rajith De Silva, Raj Kalaria, David St. Clair*

*Corresponding author for this work

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a hereditary condition with onset in mid- adulthood and is associated with mutations in the Notch-3 gene. (Joutel, A., Corepechot, C., Ducros, A., Vahedi, K., Chabriat, H., Mouton, P., Alamowitch, S., Domenda, V., Cecilion, M., Marechal, J., Vayssiere, C., Cruaud, C., Cabanis, E.A., Ruchoux, M.M., Weissenvach, J., Bach, J.F., Bousser, M.G. and Tournier-Lasserve, E., Notch3 mutations in CADASIL, a hereditary adult-onset condition causing stroke and dementia. Nature, 383 (1996) 707-710) Ultrastructural examination of the pathology of the cerebral infarcts reveals deposits in the vascular smooth muscle cells of the small arteries of the brain, but there is no obvious indication how the Notch-3 mutations give rise the observed pathology, nor is there any information on the exact nature of the deposits. We have investigated cerebrospinal fluid (CSF) from three CADASIL cases with known mutations in Notch-3 using two-dimensional gel electrophoresis. CSF from these patients was compared to that of six controls. We detected a single spot in the protein maps of patients which was absent from all the controls. In-gel tryptic digestion of this protein followed by mass spectrometric analysis of the tryptic fragments and a database search identified the spot as human complement factor B. These preliminary findings suggest that the alternative complement pathway may play a role in the pathogenesis of CADASIL. (C) 2000 Published by Elsevier Science Ireland Ltd.

Original languageEnglish
Pages (from-to)149-152
Number of pages4
JournalNeuroscience Letters
Volume282
Issue number3
DOIs
Publication statusPublished - 24 Mar 2000

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Keywords

  • Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
  • Cerebrospinal fluid
  • Complement factor B
  • Mass spectrometry
  • Two-dimensional gel electrophoresis

ASJC Scopus subject areas

  • Neuroscience(all)

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