Chemokine and cytokine levels in osteoarthritis and rheumatoid arthritis synovial fluid

To develop a method of the assay of chemokine and cytokine signaling in synovial fluid from patients suffering from osteoarthritis (OA) or rheumatoid arthritis (RA) and evaluate the effect of heterophilic antibodies on the reliability of the data. 21 synovial fluid samples from OA and 16 synovial fl...

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Hauptverfasser: Hampel, Ulrike (VerfasserIn) , Sel, Saadettin (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 28 August 2013
In: Journal of immunological methods
Year: 2013, Jahrgang: 396, Heft: 1/2, Pages: 134-139
ISSN:1872-7905
DOI:10.1016/j.jim.2013.08.007
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jim.2013.08.007
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0022175913002329
Volltext
Verfasserangaben:Ulrike Hampel, Stefan Sesselmann, Pavel Iserovich, Saadettin Sel, Friedrich Paulsen, Robert Sack

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520 |a To develop a method of the assay of chemokine and cytokine signaling in synovial fluid from patients suffering from osteoarthritis (OA) or rheumatoid arthritis (RA) and evaluate the effect of heterophilic antibodies on the reliability of the data. 21 synovial fluid samples from OA and 16 synovial fluid samples from RA patients were analyzed using a unique 2 step dot sandwich ELISA based micro-well protein array designed to detect heterophilic antibody signaling in the presence or absence of an effective heterophilic blocking reagent with assays carried out for Eotaxin, hGROa, interleukin (IL)-8, IP10, MCP-1, MCP-2, MIG, RANTES, TARC and IL-6. Array analysis reveals that the selective presence of heterophilic antibodies interferes with the accurate assay of synovial fluid samples from a minority of RA patients but not OA synovia. Using a commercial blocking diluent OA and RA synovial fluids reveal significant differences in chemokine content (IL-6, Eotaxin, hGROa, MCP-2, MIG, TARC, IL-8, RANTES). Using a two-step assay protocol it is possible to readily detect inappropriate antibody signaling due to heterophilic antibodies and devise a protocol designed to eliminate this problem thereby more accurately quantify cytokines and chemokines specific to both RA and OA fluids. 
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