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  • Title: Mass spectrometric proteome analyses of synovial fluids and plasmas from patients suffering from rheumatoid arthritis and comparison to reactive arthritis or osteoarthritis.
    Author: Sinz A, Bantscheff M, Mikkat S, Ringel B, Drynda S, Kekow J, Thiesen HJ, Glocker MO.
    Journal: Electrophoresis; 2002 Sep; 23(19):3445-56. PubMed ID: 12373775.
    Abstract:
    Differential proteome analysis is used to study body fluids from patients suffering from rheumatoid arthritis (RA), reactive arthritis (reaA) or osteoarthritis (OA). Mass spectrometric structure characterization of gel-separated proteins provided a detailed view of the protein-processing events that lead to distinct protein species present in the respective body fluids. (i) Fibrin(ogen) beta-chain degradation products, presumably plasmin-derived, appeared solely in synovial fluids (SF) from both patient collectives, (ii) calgranulin B (MRP14) was exclusively identified in SF samples derived from 5 out of 6 patients suffering from RA. Calgranulin B was not observed in synovial fluids from OA patients, nor in plasmas from either patient group. In all cases where calgranulin B was detected, calgranulin C was identified as well. (iii) Serum amyloid A protein spots were determined in plasmas and synovial fluids from patients with RA, but not in patients with OA. In addition to disease-relevant differences, interindividual differences in haptoglobin patterns of the patients under investigation were observed. Hence, in-depth proteome analysis of body fluids has proven effective for identification of multiple molecular markers and determination of associated protein structure modifications, that are thought to play a role for specifically determining a defined pathological state of diseased joints.
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