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    Peritoneal fluid haptoglobin from women with endometriosis differentially regulates macrophage cytokine production [abstract]

    Lwin, Lilian
    Lyddon, Terri
    Zimmer, Randy
    Barrier, Breton
    Timms, Kathy L.
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    [PDF] PeritonealFluidHaptoglobin.pdf (36.55Kb)
    Date
    2007
    Contributor
    University of Missouri-Columbia. Office of Undergraduate Research
    Format
    Presentation
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    Abstract
    The objective of this study was to define mechanisms by which haptoglobin from endometriotic lesions (eHp) which binds to macrophages modulates immune surveillance and inflammation in the peritoneal cavity by characterizing macrophage products regulated by eHp. To eliminate human macrophage variation, the established THP-1 monocyte cell line (1.0 x106 cells/mL/well, 24-well plates, RPMI 1640+L-glutamine, FBS, and antibiotics) was routinely differentiated into macrophage-like cells with low dose PMA (20 ng/mL) and concurrently treated with media only (M), serum haptoglobin (sHp) or haptoglobin purified from peritoneal fluid of women without (cHp) or with (eHp) endometriosis (10 μg/mL, 24 h). The RayBio Inflammatory Antibody Array III was used per instructions and chemiluminescene signal intensity was quantified by densitometry. Differences were evaluated by ANOVA and post hoc tests.Variation in 8 control spots per and between membranes was <9% (P=0.661). eHp differentially increased 8/40 substances: Eotaxin-2 (eHp>sHp, cHp, M. P=0.002), TNF-α (eHp>sHp, cHp, M. P=0.045), TNF-β (eHp>sHp, cHp, M. P=0.043), PDGF-BB (eHp>sHp, cHp, M. P=0.016), IL-6sR (eHp>cHp, M. P<0.001), IL-16 (eHp>sHp>cHp, M. P=0.072), IP-10 (eHp, sHp> cHp, M. P=0.017), RANTES (eHp, sHp>cHp, M. P=0.004) and TGF-β (eHp, sHp>M, cHp. P=0.008). Unexpectedly, cHp differentially decreased IL-2 (cHp<eHp, sHp, M. P=0.001) and MCP-1 (cHp<eHp, sHp, M. P=0.023). Twenty substances were similar in all treatments; the _expression range was divided into quartiles: High: IL-8. Moderate: IL-1β, MIP-1β. Slight: IL-10, TNFsRII, TIMP-2. Minimal: ICAM, INF-gamma, I-309; IL-1α, IL-3, IL-6, IL-11, IL-12p40, IL-12p70, IL-15, M-CSF, MIP-1α, MIP-1δ and TNFsRI. Nine were not detected in any treatment: Eotaxin-1, GCSF, GM-CSF, IL-4, IL-7, IL-13, IL-17, MCP-2, MIG. Differential eHp up-regulation and cHp down-regulation of macrophage inflammatory substances indicates that the function of eHp, hence the function of macrophages in women with endometriosis is skewed compared to controls. We postulate that peritoneal macrophages interaction with eHp contributes to endometrioisis persistence and/or pathophysiologies.
    URI
    http://hdl.handle.net/10355/1752
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