Cited by 55Aldose Reductase and TaurineRetinal Diseases and TreatmentsSirtuins and Resveratrol in Medicine

Diabetes-Induced Changes in Retinal NAD-Redox Status

Obrosova, Irina G., Stevens, Martin J., Lang, Hans-Jochen·2001·Pharmacology

Abstract

Diabetes-induced changes in retinal metabolism and function have been linked to increased aldose reductase activity, hypoxia or ‘pseudohypoxia’ (increase in NADH/NAD+ attributed to increased sorbitol dehydrogenase activity). To address this controversy, we evaluated the effects of two vasoactive compounds, α 1-adrenoceptor antagonist prazosin and antioxidant DL-α-lipoic acid, as well as sorbitol dehydrogenase inhibitor (SDI-157) and aldose reductase inhibitor (sorbinil) on retinal free mitochondrial and cytosolic NAD+/NADH ratios in streptozotocin-diabetic rats. Diabetes-induced decrease in mitochondrial and cytosolic NAD+/NADH ratios was completely or partially corrected by prazosin and DL-α-lipoic acid (despite the fact that prazosin did not affect and DL-α-lipoic acid even further increased sorbitol pathway activity) as well as by sorbinil, whereas SDI-157 was totally ineffective. Hypoxia-like metabolic changes in the diabetic retina originate from aldose reductase, but not sorbitol dehydrogenase activity.

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Crossref · 10.1159/000056091

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Authors
Obrosova, I. G., Stevens, M. J., & Lang, H.-J.
Affiliations
University of Michigan (US)
Venue
Pharmacology
Publisher
S. Karger AG
Published
2001
Volume
62
Issue
3
Pages
172-180
ISSN
  • 0031-7012 (ISSN-L)
  • 1423-0313
OpenAlex
W2070167786
Cited by
55
References
71
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2021: 4 · 2020: 2 · 2019: 2 · 2016: 2 · 2015: 1 · 2014: 2 · 2013: 2 · 2012: 4
FWCI
0.91
Type
journal article
Language
en
Open access
closed
Locations
  • Pharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01 DK 52391)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Aldose Reductase and Taurine
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
Keywords
diabetic retinopathy, NAD+/NADH ratio, aldose reductase, sorbitol dehydrogenase, polyol pathway, prazosin, alpha1-adrenoceptor antagonists, DL-alpha-lipoic acid, sorbinil, mitochondrial metabolism, streptozotocin-induced diabetes, pseudohypoxia
MeSH terms
Adrenergic alpha-Antagonists, Ammonia, Animals, Antioxidants, Cell Fractionation, Diabetes Mellitus, Experimental, Enzyme Inhibitors, Fructose, Glucose, Imidazoles, Ketoglutaric Acids, Thioctic Acid, Male, Mitochondria, NAD, Oxidation-Reduction, Piperazines, Prazosin, Pyrimidines, Retina, Sorbitol, Rats, Sprague-Dawley, Glutamic Acid, Pyruvic Acid, Lactic Acid, Imidazolidines, Rats

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