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Related Experiment Videos

Fibronectin, complement and immunoglobulins in serum after surgery.

T Gauperaa, K E Giercksky, A Revhaug

    The British Journal of Surgery
    |January 1, 1985
    PubMed
    Summary

    Postoperative fibronectin levels decrease but remain sufficient for immune function. Reduced levels may support wound healing by sequestering at injury sites, not impacting septic resistance.

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    Area of Science:

    • Immunology
    • Surgical Research
    • Biochemistry

    Background:

    • Fibronectin is a proposed non-specific opsonic protein crucial for host resistance against sepsis post-trauma and surgery.
    • Understanding fibronectin's role requires investigating its serum level fluctuations during the postoperative period.

    Purpose of the Study:

    • To investigate postoperative changes in serum levels of fibronectin, immunoglobulins (IgG, IgM), and complement factors (C3, C4).
    • To assess the clinical significance of these changes in relation to host resistance and wound healing.

    Main Methods:

    • Serum samples collected pre-operatively and postoperatively from 72 patients undergoing elective surgery.
    • Analysis of fibronectin, IgG, IgM, C3, and C4 levels at various postoperative intervals.
    • Comparison of levels between patients with and without complications, and those with malignant disease.

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    Main Results:

    • Fibronectin levels significantly decreased immediately post-operation, not returning to pre-operative levels within 120 hours.
    • Significant reductions observed in C3, C4, and IgG levels; IgM levels remained unchanged.
    • Postoperative fibronectin levels, though reduced, remained above concentrations essential for in vitro macrophage and monocyte binding.

    Conclusions:

    • Postoperative reduction in circulating fibronectin is likely due to sequestration at the injury site.
    • This reduction may not compromise host resistance against septic complications.
    • Sequestered fibronectin at injury sites could be vital for normal wound healing via cell-matrix interactions.