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Glutathione:glutathione sulfide redox imbalance in early impaired fasting glucose


Jelinek, HF and Al-Aubaidy, HA and Maschirow, L and Meidinger, S and Jamil, DA and Butkowski, E, Glutathione:glutathione sulfide redox imbalance in early impaired fasting glucose, Cardiology and Angiology, 2, (4) pp. 223-229. ISSN 2347-520X (2014) [Refereed Article]


Copyright Statement

Copyright 2014 Jelinek et al.; This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

DOI: doi:10.9734/CA/2014/11389#sthash.p4YJ68a6.dpuf


Aim: The current study aims to examine the balance between glutathione and glutathione sulfide and how this was disturbed in patients with impaired fasting glucose (IFG) level. The study also included 8-hydroxy-2-deoxyguanosine to provide a more comprehensive picture of the overall redox state.

Methodology: A cross-sectional analysis of ninety medication free participants without reported history of cardiovascular disease and/or diabetes mellitus was undertaken with data collected from the Diabetes Complications Research Initiative database at Charles Sturt University. Fasting blood glucose, HbA1c and cholesterol as standard markers for diabetes mellitus and associated complications were measured in addition to the emerging biomarkers glutathione (GSH), glutathione disulfide (GSSG), and urinary 8-hydroxy-2-deoxyguanosine (8OHdG).

Results: The IFG group had a mean blood glucose level above 6.1mmol/L being significantly higher compared to control (P<0.001). Traditional clinical markers were all within the normal range for both groups. However the GSH/GSSG ratio (8.535.4 vs 6.622.2, P=.04) was significantly lower in the IFG group. GSH and 8OHdG, being markers for oxidative stress, were not significantly different between the two groups.

Conclusion: The free radical related changes in metabolic redox pathways are linked to oxidative stress and related pathologies but may not be associated with disease progression, providing an explanation why conflicting results are presented in the literature concerning any individual biomarkers and risk of diabetes. Our study included individuals with no medication use and mild hyperglycemia (impaired fasting glucose) and indicates a pro-oxidant response to mild-moderate hyperglycemia with a moderate rise in oxidative DNA damage.

Item Details

Item Type:Refereed Article
Keywords:impaired fasting glucose, oxidative stress, antioxidants, reduced/oxidised glutathione ratio
Research Division:Biomedical and Clinical Sciences
Research Group:Medical biochemistry and metabolomics
Research Field:Medical biochemistry - carbohydrates
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Al-Aubaidy, HA (Dr Hayder Al-Aubaidy)
ID Code:95730
Year Published:2014
Deposited By:Medicine
Deposited On:2014-10-08
Last Modified:2015-04-20
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