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Paraoxonase genes and disease.

R A Hegele1

  • 1John P Robarts Research Institute, Department of Medicine, University of Western Ontario, London, Canada. robert.hegele@rri.on.ca

Annals of Medicine
|August 12, 1999
PubMed
Summary

The paraoxonase gene family (PON1, PON2, PON3) has emerging roles in human health. Research is exploring their links to atherosclerosis, lipoprotein metabolism, and glucose regulation, with potential therapeutic implications.

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Area of Science:

  • Human Genetics
  • Biochemistry
  • Molecular Biology

Background:

  • The paraoxonase gene family, comprising PON1, PON2, and PON3, is located on chromosome 7q21.3-22.1.
  • Limited understanding of the physiological and pathological roles of paraoxonase gene products until recently.
  • Emerging biochemical and genetic data are illuminating their functions.

Purpose of the Study:

  • To review and synthesize current knowledge on the paraoxonase gene family.
  • To highlight the known functions of PON1 and the suggested roles of PON2 and PON3.
  • To discuss the implications for human physiology, pathology, and potential therapeutic interventions.

Main Methods:

  • Literature review of biochemical and genetic studies.
  • Analysis of gene expression patterns (e.g., PON1 in liver, PON2 ubiquitously).
  • Examination of associations between genetic variations and quantitative phenotypes.

Main Results:

  • PON1 (serum paraoxonase) hydrolyzes organophosphates and associates with atherosclerosis and lipoprotein metabolism.
  • PON2 mRNA is widely expressed, with genetic variations linked to lipoproteins, glucose, birthweight, and atherosclerosis.
  • The role of PON3 remains poorly understood.

Conclusions:

  • Further research is needed to fully elucidate the roles of PON2 and PON3.
  • Clinical testing for paraoxonase gene variations may be warranted.
  • Paraoxonase gene products could be targets for therapeutic interventions.

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