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Related Experiment Videos

Polyol pathway and diabetic peripheral neuropathy.

Peter J Oates1

  • 1Department of Cardiovascular and Metabolic Diseases, Pfizer Global Research and Development, Groton, Connecticut 06340, USA.

International Review of Neurobiology
|August 30, 2002
PubMed
Summary

Metabolic flux through the polyol pathway, not sorbitol levels, drives diabetic peripheral neuropathy. Inhibiting this flux with potent inhibitors offers a promising treatment for this condition.

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Area of Science:

  • Biochemistry
  • Neuroscience
  • Metabolic pathways

Background:

  • Diabetic peripheral neuropathy is a complication linked to the polyol pathway.
  • Key enzymes include aldose reductase and sorbitol dehydrogenase.

Purpose of the Study:

  • To critically examine the polyol pathway's role in diabetic neuropathy pathogenesis.
  • To review enzymes, genes, inhibitors, and clinical data.
  • To propose a new metabolic model and future research directions.

Main Methods:

  • Review of enzyme structure, biochemistry, and gene information.
  • Analysis of polyol pathway inhibitors in experimental and clinical studies.
  • Development of a metabolic model for in vivo relationships.

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Main Results:

  • Metabolic flux through the polyol pathway is identified as the primary pathogenic factor.
  • Nerve sorbitol concentration is less critical than pathway flux.
  • Current data supports the hypothesis linking polyol pathway flux to neuropathy.

Conclusions:

  • Robust inhibition of polyol pathway flux is crucial for treating diabetic neuropathy.
  • Development of "super-potent" inhibitors is necessary for clinical benefit.
  • Further basic and clinical research is essential.