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Serum Amyloid A (SAA) induces transcription affecting inflammation.

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Serum amyloid A - a review.

George H Sack1

  • 1Departments of Biological Chemistry and Medicine, The Johns Hopkins University School of Medicine, 725 N. Wolfe Street, Physiology 615, Baltimore, MD, 21205, USA. gsack@jhmi.edu.

Molecular Medicine (Cambridge, Mass.)
|September 1, 2018
PubMed
Summary
This summary is machine-generated.

Serum amyloid A (SAA) proteins, key in the acute phase response, are now understood to have vital roles in lipid transport, inflammation, and immunity. Further research into SAA interactions may improve disease treatment and prevention.

Keywords:
SAASerum amyloid Aacute phase response (APR)amyloidosisapolipoproteinarthritisatherosclerosiscytokineinflammationlipopolysaccharide (LPS)livermyeloid-derived suppressor cells (MDSC)

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Area of Science:

  • Biochemistry
  • Immunology
  • Molecular Biology

Background:

  • Serum amyloid A (SAA) proteins are evolutionarily conserved, small proteins with dynamic synthesis patterns.
  • SAA levels increase dramatically during the acute phase response and can form amyloid fibrils in secondary amyloidosis.
  • Despite their known characteristics, the precise physiological roles of SAA proteins have remained largely undefined.

Purpose of the Study:

  • To consolidate existing research to provide a coordinated perspective on SAA protein functions.
  • To explore the multifaceted roles of SAA proteins beyond their association with the acute phase response.
  • To highlight the potential of SAA protein research in understanding disease pathophysiology and developing therapeutic strategies.

Main Methods:

  • Review and synthesis of existing literature on SAA protein structure, function, and interactions.
  • Analysis of SAA protein properties, including lipophilicity and cytokine-like activity.
  • Examination of cellular and molecular interactions involving SAA proteins.

Main Results:

  • SAA proteins exhibit significant lipophilicity, linking them to lipid transport, metabolism, and atherosclerosis.
  • SAA proteins function as cytokine-like molecules involved in cell communication and inflammatory pathways.
  • SAA proteins play a critical role in the control and propagation of the acute phase response.

Conclusions:

  • SAA proteins are integral to the acute phase response, inflammation, and immune regulation.
  • Understanding SAA's diverse interactions offers new avenues for disease pathophysiology insights.
  • Further investigation into SAA proteins may lead to improved disease treatment and prevention strategies.