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Pathobiochemical mechanisms during the acute phase response.

K Kleesiek, H Greiling

    International Journal of Microcirculation, Clinical and Experimental
    |January 1, 1984
    PubMed
    Summary
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    The acute phase response involves local inflammation, systemic reactions, and increased acute phase proteins. Hepatocytes synthesize these proteins, modulated by hormones and inflammatory mediators, to regulate inflammation.

    Area of Science:

    • Biochemistry
    • Immunology
    • Cell Biology

    Background:

    • The acute phase response is a critical systemic reaction to inflammation.
    • It involves local inflammatory triggers and the release of humoral factors.
    • Key phenomena include increased glycoprotein synthesis and acute phase protein levels in plasma.

    Purpose of the Study:

    • To elucidate the sequential phenomena characterizing the acute phase response.
    • To identify the inflammatory mediators and signaling pathways involved.
    • To understand the hormonal and biochemical regulation of hepatic acute phase protein synthesis.

    Main Methods:

    • Review of inflammatory mediator release during phagocytosis (granulocytes, macrophages).
    • Analysis of potential signaling molecules reaching hepatocytes (e.g., leukocyte endogenous mediator, prostaglandins).

    Related Experiment Videos

  • Examination of hormonal modulation (insulin, cortisol, somatotropin) on hepatic synthesis.

    • Main Results:

    • Inflammatory mediators like lysosomal enzymes and prostaglandins are released during phagocytosis.
    • Leukocyte endogenous mediator (LEM) and possibly proteinase complexes are implicated in signaling.
    • Hormones significantly modulate hepatic acute phase protein synthesis.
    • Biochemical events include enhanced protein synthesis and glycosylation control in hepatocytes.

    Conclusions:

    • The acute phase response is a multi-step process involving inflammatory mediators and hormonal signals.
    • Hepatocytes play a central role in synthesizing acute phase proteins, which modulate inflammation.
    • Further research is needed to fully identify the signaling mechanisms involved.