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Related Experiment Videos

Serum amyloid P component induction by immunomodulators.

L A Hilgers1, M J de Reuver, A R Vaandrager

  • 1Laboratory of Microbiology, State University of Utrecht, The Netherlands.

Natural Immunity and Cell Growth Regulation
|January 1, 1988
PubMed
Summary

Synthetic adjuvants can modulate immune responses without increasing serum amyloid P component (SAP) levels. This suggests different pathways are involved, making SAP levels alone an unreliable screening method for adjuvant activity.

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Area of Science:

  • Immunology
  • Pharmacology

Background:

  • Immunoadjuvants enhance immune responses.
  • Serum amyloid P component (SAP) is a potential marker for adjuvant activity.

Purpose of the Study:

  • To investigate the relationship between immunoadjuvant capacity to enhance SAP levels and modulate humoral immune responses.
  • To determine if SAP levels can be used to screen for adjuvant activity.

Main Methods:

  • Testing synthetic adjuvants (dimethyldioctadecylammonium bromide, dextran sulphate, lipopolysaccharide) in different mouse strains.
  • Measuring SAP levels and humoral immune responses to sheep red blood cells.

Main Results:

  • Some mouse strains did not show enhanced SAP levels with certain adjuvants.

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  • These same mouse strains still exhibited normal immunomodulatory responses to the adjuvants.
  • Findings indicate distinct pathways for SAP enhancement and immune modulation.

    • Conclusions:

    • Increased SAP levels and immune response modulation by adjuvants occur through at least partially different biological pathways.
    • Measuring SAP levels alone is insufficient for screening potential immunoadjuvant drugs.