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[Phagocytic activity of monocytes tin glomerulonephritis in complete remission]

G Lagrue, J Laurent, A Branellec

    Biomedicine & Pharmacotherapy = Biomedecine & Pharmacotherapie
    |January 1, 1983
    PubMed

    Insights

    Phagocytic activity of monocytes is reduced in active glomerulonephritis (GN), impairing the removal of immune complexes. This defect is not seen in GN remission, suggesting it’s linked to active disease, not serum inhibitors.

    Area of Science:

    • Nephrology
    • Immunology
    • Cell Biology

    Context:

    • Circulating immune complexes (CIC) are a primary cause of glomerulonephritis (GN).
    • Phagocyte activity is crucial for clearing CIC, but its role in GN pathogenesis is not fully understood.

    Purpose:

    • To investigate the phagocytic function of peripheral monocytes in patients with active GN and those in remission.
    • To determine if reduced phagocytic activity contributes to CIC accumulation in GN.

    Summary:

    • Phagocytic activity, measured by phagocytic index and percentage, was significantly decreased in monocytes from patients with active GN (membranous GN, membranoproliferative GN, lipoid nephrosis) compared to controls.
    • This phagocytic defect was not observed in patients with GN in complete remission and was independent of serum factors, suggesting an intrinsic monocyte dysfunction.
    • The findings indicate that impaired monocyte phagocytosis in active GN may lead to insufficient clearance of CIC.

    Impact:

    • Highlights a potential mechanism contributing to GN progression and severity.
    • Suggests that assessing monocyte phagocytic function could aid in diagnosing and managing GN.
    • Opens avenues for therapeutic strategies targeting phagocyte function in GN treatment.

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