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Glutaredoxin mediated redox effects of coenzyme Q10 treatment in type 1 and type 2 diabetes patients
The possible beneficial effects of coenzyme Q10 (CoQ10) supplementation on disease progression and oxidant status in diabetes remains debated. In the present study, patients with type 1 and type 2 diabetes were treated with oral CoQ10, 100 mg twice daily for 12 weeks. We assessed total antioxidant c...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4737908/ https://www.ncbi.nlm.nih.gov/pubmed/26966682 http://dx.doi.org/10.1016/j.bbacli.2015.06.001 |
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author | Montano, Sergio J. Grünler, Jacob Nair, Deepika Tekle, Michael Fernandes, Aristi P. Hua, Xiang Holmgren, Arne Brismar, Kerstin Ungerstedt, Johanna S. |
author_facet | Montano, Sergio J. Grünler, Jacob Nair, Deepika Tekle, Michael Fernandes, Aristi P. Hua, Xiang Holmgren, Arne Brismar, Kerstin Ungerstedt, Johanna S. |
author_sort | Montano, Sergio J. |
collection | PubMed |
description | The possible beneficial effects of coenzyme Q10 (CoQ10) supplementation on disease progression and oxidant status in diabetes remains debated. In the present study, patients with type 1 and type 2 diabetes were treated with oral CoQ10, 100 mg twice daily for 12 weeks. We assessed total antioxidant capacity, intra- and extracellular levels of the redox regulating protein glutaredoxin 1 (Grx1), CoQ10, oxidized LDL-cholesterol, lipid profile and HbA1c. We have previously shown that extracellular Grx1 is increased in patients with type 2 diabetes compared to healthy subjects. In the present study, CoQ10 treatment significantly decreased serum Grx1 activity as well as total antioxidant capacity independent of type of diabetes, indicating an improvement to a less oxidized extracellular environment. The effect on serum Grx1 activity was more prominent in patients not on statin treatment. Conversely, intracellular Grx1 activity as well as mRNA levels increased independent of statin treatment. There was a significant improvement in oxidized LDL-cholesterol and lipid profile, with a tendency to improved metabolic control (HbA1c). Additionally, we describe for the first time that CoQ10 is a direct substrate for glutathione, and that Grx1 catalyzes this reaction, thus presenting a novel mechanism for CoQ10 reduction which could explain our findings of an increased intracellular Grx1. In conclusion, 12 weeks CoQ10 treatment significantly improved the extracellular redox balance and lipid profile, indicating that prolonged treatment may have beneficial effects also on clinical outcome in diabetes. |
format | Online Article Text |
id | pubmed-4737908 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-47379082016-03-10 Glutaredoxin mediated redox effects of coenzyme Q10 treatment in type 1 and type 2 diabetes patients Montano, Sergio J. Grünler, Jacob Nair, Deepika Tekle, Michael Fernandes, Aristi P. Hua, Xiang Holmgren, Arne Brismar, Kerstin Ungerstedt, Johanna S. BBA Clin Regular Article The possible beneficial effects of coenzyme Q10 (CoQ10) supplementation on disease progression and oxidant status in diabetes remains debated. In the present study, patients with type 1 and type 2 diabetes were treated with oral CoQ10, 100 mg twice daily for 12 weeks. We assessed total antioxidant capacity, intra- and extracellular levels of the redox regulating protein glutaredoxin 1 (Grx1), CoQ10, oxidized LDL-cholesterol, lipid profile and HbA1c. We have previously shown that extracellular Grx1 is increased in patients with type 2 diabetes compared to healthy subjects. In the present study, CoQ10 treatment significantly decreased serum Grx1 activity as well as total antioxidant capacity independent of type of diabetes, indicating an improvement to a less oxidized extracellular environment. The effect on serum Grx1 activity was more prominent in patients not on statin treatment. Conversely, intracellular Grx1 activity as well as mRNA levels increased independent of statin treatment. There was a significant improvement in oxidized LDL-cholesterol and lipid profile, with a tendency to improved metabolic control (HbA1c). Additionally, we describe for the first time that CoQ10 is a direct substrate for glutathione, and that Grx1 catalyzes this reaction, thus presenting a novel mechanism for CoQ10 reduction which could explain our findings of an increased intracellular Grx1. In conclusion, 12 weeks CoQ10 treatment significantly improved the extracellular redox balance and lipid profile, indicating that prolonged treatment may have beneficial effects also on clinical outcome in diabetes. Elsevier 2015-06-10 /pmc/articles/PMC4737908/ /pubmed/26966682 http://dx.doi.org/10.1016/j.bbacli.2015.06.001 Text en © 2015 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Regular Article Montano, Sergio J. Grünler, Jacob Nair, Deepika Tekle, Michael Fernandes, Aristi P. Hua, Xiang Holmgren, Arne Brismar, Kerstin Ungerstedt, Johanna S. Glutaredoxin mediated redox effects of coenzyme Q10 treatment in type 1 and type 2 diabetes patients |
title | Glutaredoxin mediated redox effects of coenzyme Q10 treatment in type
1 and type 2 diabetes patients |
title_full | Glutaredoxin mediated redox effects of coenzyme Q10 treatment in type
1 and type 2 diabetes patients |
title_fullStr | Glutaredoxin mediated redox effects of coenzyme Q10 treatment in type
1 and type 2 diabetes patients |
title_full_unstemmed | Glutaredoxin mediated redox effects of coenzyme Q10 treatment in type
1 and type 2 diabetes patients |
title_short | Glutaredoxin mediated redox effects of coenzyme Q10 treatment in type
1 and type 2 diabetes patients |
title_sort | glutaredoxin mediated redox effects of coenzyme q10 treatment in type
1 and type 2 diabetes patients |
topic | Regular Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4737908/ https://www.ncbi.nlm.nih.gov/pubmed/26966682 http://dx.doi.org/10.1016/j.bbacli.2015.06.001 |
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