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Oxidative metabolism.

M F Beal1

  • 1Department of Neurology and Neuroscience, Weill Medical College of Cornell University and New York Presbyterian Hospital, 525 East 68th Street, Room F610, New York, New York 10021, USA. fbeal@mail.med.cornell.edu

Annals of the New York Academy of Sciences
|February 24, 2001
PubMed
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Retraction.

Proceedings of the National Academy of Sciences of the United States of America·2006

Alzheimer's disease shows metabolic defects and oxidative damage, particularly in cytochrome oxidase and alpha-ketoglutarate dehydrogenase. Improving brain metabolism or reducing oxidative stress may offer therapeutic benefits for Alzheimer's patients.

Area of Science:

  • Neuroscience
  • Biochemistry
  • Pathology

Background:

  • Alzheimer's disease (AD) is characterized by significant metabolic dysfunction and oxidative damage.
  • Evidence indicates reduced activity of key enzymes like cytochrome oxidase and alpha-ketoglutarate dehydrogenase in AD.
  • These biochemical alterations suggest a central role for metabolic and oxidative pathways in AD pathogenesis.

Purpose of the Study:

  • To review the evidence linking metabolic defects and oxidative damage in Alzheimer's disease.
  • To explore the potential of targeting metabolic pathways and oxidative stress for therapeutic interventions in AD.

Main Methods:

  • Review of existing literature on Alzheimer's disease, focusing on metabolic and oxidative stress markers.
  • Analysis of studies utilizing cybrid cell lines to investigate mitochondrial function in AD.

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  • Examination of evidence for enzymatic defects, specifically cytochrome oxidase and alpha-ketoglutarate dehydrogenase.

    • Main Results:

    • Cybrid cell line studies consistently show reduced cytochrome oxidase activity in AD models.
    • Substantial evidence points to a defect in alpha-ketoglutarate dehydrogenase, a critical enzyme in the Krebs cycle.
    • Both metabolic impairment and oxidative damage are strongly implicated in the progression of Alzheimer's disease.

    Conclusions:

    • The confluence of metabolic defects and oxidative damage presents a compelling target for Alzheimer's disease therapy.
    • Therapeutic strategies aimed at enhancing brain energy metabolism or mitigating oxidative stress warrant further investigation for AD treatment.
    • Interventions targeting mitochondrial dysfunction and related pathways may offer a novel approach to managing Alzheimer's disease.