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Paraoxonase 1 and oxidative stress in paediatric non-alcoholic steatohepatitis

Sonal Desai1, Susan S Baker, Wensheng Liu

  • 1Women and Children's Hospital of Buffalo, Department of Pediatrics, the State University of New York, Buffalo, NY, USA.

Liver International : Official Journal of the International Association for the Study of the Liver
|September 14, 2013
PubMed

Insights

Children with non-alcoholic steatohepatitis (NASH) show increased liver expression of catalase and paraoxonase 1 (PON1). These findings suggest potential protective roles for these antioxidants in NASH.

Area of Science:

  • Pediatric Hepatology
  • Oxidative Stress Research
  • Biomarker Discovery

Background:

  • Non-alcoholic steatohepatitis (NASH) in children is a growing health issue.
  • Oxidative stress plays a key role in NASH development.
  • Antioxidant enzymes are crucial for liver protection.

Purpose of the Study:

  • To investigate the expression of antioxidant enzymes in pediatric NASH.
  • To understand the role of these enzymes in NASH pathophysiology.
  • To identify potential therapeutic targets for NASH.

Main Methods:

  • Assessed mRNA expression of catalase, GPX1, GSR, PON1, and ROS-related genes using microarrays and qPCR.
  • Quantified PON1 protein levels in liver and serum via Western blot.
  • Measured serum enzymatic activities of GPX, GSR, and PON1.

Main Results:

  • NASH livers showed higher mRNA expression of catalase and PON1, but not GPX1 or GSR.
  • PON1 mRNA and protein were elevated in NASH livers.
  • No significant differences in serum GPX or GSR activity were found between NASH patients and controls.

Conclusions:

  • Elevated catalase and PON1 expression in NASH livers suggests a protective function.
  • These antioxidant enzymes may represent important therapeutic targets for NASH interventions.
  • Further research into these enzymes could lead to new treatments for pediatric NASH.
Abstract

Keywords:
AntioxidantNAFLDROScatalaseglutathione peroxidase

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