Cited by 304Antioxidant Activity and Oxidative StressParaoxonase enzyme and polymorphismsDiabetes, Cardiovascular Risks, and Lipoproteins

Relationships between plasma measures of oxidative stress and metabolic control in NIDDM

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Nourooz-Zadeh, J., Rahimi, A., Tajaddini-Sarmadi, J., Tritschler, H., Rosen, P., Halliwell, B., Betteridge, D. J.·1997·Diabetologia

Abstract

Diabetes mellitus may be associated with increased lipid peroxidation which may contribute to long-term tissue damage. To test this hypothesis, we measured hydroperoxides (ROOHs) as well as alpha-tocopherol in plasma from healthy subjects and individuals with non-insulin-dependent diabetes mellitus (NIDDM) (n = 41 and 87, respectively). ROOHs were analysed using the ferrous oxidation with xylenol orange version II (FOX2) assay in conjunction with a specific ROOH reductant, triphenylphosphine, alpha-Tocopherol was analysed by HPLC with fluorimetric detection. NIDDM patients had lower cholesterol standardised alpha-tocopherol levels as compared to control subjects (3.3 +/- 1.0 vs 5.1 +/- 2.3 (mumol/l)/(mmol/l); p < 0.0005, Mann-Whitney test): range (1.5-6.5 vs 1.9-13.0, respectively). Plasma ROOHs were substantially higher in the diabetic subjects compared to those of the control subjects (9.4 +/- 3.3 vs 4.1 +/- 2.2 mumol/l; p < 0.0005 Mann-Whitney test: range 2.7-16.8 vs 0.4-10.3, respectively). ROOH/cholesterol standardised alpha-tocopherol ratio was significantly higher in the diabetic patients compared to control subjects (3.2 +/- 1.6 vs 0.9 +/- 0.6; p < 0.0005, Mann-Whitney test: range 0.7-8.3 and 0.1-2.7, respectively). Plasma levels of ROOHs and alpha-tocopherol were similar in diabetic patients with or without complications as well as in smokers and non-smokers. The present study confirms previous findings from this laboratory that NIDDM is associated with increased oxidative stress as assessed by plasma ROOHs. Increased oxidative stress in diabetic patients appears to be related to the underlying metabolic abnormalities in diabetes, rather than to the complications of this disease. We therefore suggest that oxidative stress is an early stage in the disease pathology, which may contribute to the development of complications.

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  1. Wolff SP (1993) Diabetes and free radicals. In: Cheese- man KH, Slater TF (eds) Free radicals in medicine. Brit- ish Medical Bulletin, Vol 49. Churchill Livingstone Edinburgh London Madrid Mellbourne New York Tokyo, pp 642-652

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Authors
Nourooz-Zadeh, J., Rahimi, A., Tajaddini-Sarmadi, J., Tritschler, H., Rosen, P., Halliwell, B., & Betteridge, D. J.
Affiliations
  • University College London (GB)
  • Heinrich Heine University Düsseldorf (DE)
  • King's College London (GB)
Venue
Diabetologia
Published
1997-05-30
Volume
40
Issue
6
Pages
647-653
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W2071444458
Cited by
303
References
27
Citations by year
2025: 2 · 2024: 4 · 2023: 4 · 2022: 4 · 2021: 8 · 2020: 3 · 2019: 6 · 2018: 5 · 2017: 8 · 2016: 11 · 2015: 10 · 2014: 12 · 2013: 8 · 2012: 7
FWCI
10.64
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
British Heart Foundation
Topics
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Paraoxonase enzyme and polymorphisms
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
oxidative stress, type 2 diabetes, lipid peroxidation, hydroperoxides, alpha-tocopherol, plasma antioxidants, diabetes complications, metabolic control, smoking
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Blood Glucose, Cholesterol, Diabetes Mellitus, Type 2, Female, Glycated Hemoglobin, Humans, Lipid Peroxides, Male, Middle Aged, Reference Values, Regression Analysis, Triglycerides, Vitamin E, Oxidative Stress

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