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Antioxidants in Down syndrome

Ira T Lott1

  • 1Department of Pediatrics and Neurology, School of Medicine, University of California Irvine (UCI), Orange, CA 92868, USA. itlott@uci.edu

Biochimica Et Biophysica Acta
|December 31, 2011
PubMed

Insights

Down syndrome (DS) is linked to increased oxidative stress, impacting brain health and Alzheimer

Area of Science:

  • Neuroscience
  • Genetics
  • Biochemistry

Background:

  • Individuals with Down syndrome (DS) exhibit elevated oxidative stress across their lifespan.
  • Mouse models of DS display cellular oxidative stress, serving as platforms for antioxidant research.
  • Overexpressed genes on chromosome 21 are implicated in oxidative stress and neuronal apoptosis in DS.

Purpose of the Study:

  • To examine the biological role of oxidative stress in Down syndrome (DS).
  • To investigate the relationship between oxidative stress and developmental/aging abnormalities in DS.
  • To explore the connection between oxidative stress, neuropathology, and Alzheimer disease (AD) risk in DS.

Main Methods:

  • Review of existing literature on oxidative stress in Down syndrome.
  • Analysis of mouse models exhibiting DS-related phenotypes and oxidative stress.
  • Examination of genetic factors (chromosome 21) linked to oxidative stress and apoptosis.

Main Results:

  • Imbalance in free radical metabolism contributes to DS neuropathology and Alzheimer disease (AD) predisposition.
  • Mitochondria are identified as key targets of oxidative stress, potentially triggering AD in DS.
  • Biomarkers for oxidative stress are documented in both DS and the general AD population.

Conclusions:

  • Oxidative stress plays a significant role in the development and aging processes in Down syndrome.
  • Therapeutic interventions using standard antioxidants have yielded inconsistent results.
  • Further research is needed to understand and target oxidative stress pathways effectively in DS.

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