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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

CSF protein profiling using Multiplex Immuno-assay : A potential new diagnostic tool for leptomeningeal metastases.

OBJECTIVE: The diagnosis of leptomeningeal metastases (LM) is based on clinical symptoms, magnetic resonance imaging (MRI) of brain and spine and cytological analysis of cerebrospinal fluid (CSF). The clinical picture of LM is highly variable and both cytological CSF analysis and contrast-enhanced MRI are limited in sensitivity. More sensitive tools are needed to diagnose LM. We measured a profile of proteins involved in adhesion and inflammation in the CSF of LM and control patients and determined their potential diagnostic value for LM. PATIENTS AND METHODS: Using Multiplex Immuno-Assay (MIA), the CSF concentrations of nine soluble adhesion molecules, cyto- and chemokines were measured in patients with cytologically proven LM (n=57) and control patients with a systemic malignancy (n=20), aseptic/viral meningitis (n=11) or other (non-)neurological diseases (n=19). RESULTS: We found high CSF levels of soluble Vascular Cell Adhesion Molecule-1 (sVCAM-1), soluble Intercellular Adhesion Molecule-1 (sICAM-1), Interleukin-8 (IL-8), Pulmonary and Activation Regulated Chemokine (PARC), Interleukin-18 (IL-18) and Interferon-gamma inducible protein ( IP-10) in patients with LM. The CSF protein profile in LM patients differed significantly from the profile found in control patients. Multivariate logistic regression and ROC analysis showed that the MIA-measured CSF protein profile has an additive discriminating value for LM above standard CSF parameters. A combination of total protein, glucose, IL-8, PARC and IP-10 CSF levels proved to be most discriminative between LM and non-LM patients. CONCLUSION: Our results warrant a prospective study to determine whether a CSF protein profile, including IL-8, PARC and IP-10 has diagnostic value compared with CSF cytology, the golden standard for LM.[1]


  1. CSF protein profiling using Multiplex Immuno-assay : A potential new diagnostic tool for leptomeningeal metastases. Brandsma, D., Voest, E.E., de Jager, W., Bonfrer, H., Algra, A., Boogerd, W., Korse, T., Reijneveld, J.C., Verbeek, M.M., Rijkers, G., Taphoorn, M.J. J. Neurol. (2006) [Pubmed]
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