Overexpression of glyoxalase-I reduces hyperglycemiainduced levels of advanced glycation end products and oxidative stress in diabetic rats

Olaf Brouwers, Petra M. Niessen, Isabel Ferreira, Toshio Miyata, Peter G. Scheffer, Tom Teerlink, Patrick Schrauwen, Michael Brownlee, Coen D. Stehouwer, Casper G. Schalkwijk

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Abstract

The reactive advanced glycation end product (AGE) precursor methylglyoxal (MGO) and MGO-derived AGEs are associated with diabetic vascular complications and also with an increase in oxidative stress. Glyoxalase-I (GLO-I) transgenic rats were used to explore whether overexpression of this MGO detoxifying enzyme reduces levels of AGEs and oxidative stress in a rat model of diabetes. Rats were made diabetic with streptozotocin, and after 12 weeks, plasma and multiple tissues were isolated for analysis of AGEs, carbonyl stress, and oxidative stress. GLO-I activity was significantly elevated in multiple tissues of all transgenic rats compared with wild-type (WT) littermates. Streptozotocin treatment resulted in a 5-fold increase in blood glucose concentrations irrespective of GLO-I overexpression. Levels of MGO, glyoxal, 3-deoxyglucosone, AGEs, and oxidative stress markers nitrotyrosine, malondialdehyde, and F2-isoprostane were elevated in the diabetic WT rats. In diabetic GLO-I rats, glyoxal and MGO composite scores were significantly decreased by 81%, and plasma AGEs and oxidative stress markers scores were significantly decreased by ∼50%. Hyperglycemia induced a decrease in protein levels of the mitochondrial oxidative phosphorylation complex in the gastrocnemius muscle, which was accompanied by an increase in the lipid peroxidation product 4-hydroxy-2-nonenal, and this was counteracted by GLO-I overexpression. This study shows for the first time in an in vivo model of diabetes that GLO-I overexpression reduces hyperglycemia-induced levels of carbonyl stress, AGEs, and oxidative stress. The reduction of oxidative stress by GLO-I overexpression directly demonstrates the link between glycation and oxidative stress.

Original languageEnglish (US)
Pages (from-to)1374-1380
Number of pages7
JournalJournal of Biological Chemistry
Volume286
Issue number2
DOIs
StatePublished - Jan 14 2011

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Lactoylglutathione Lyase
Advanced Glycosylation End Products
Oxidative stress
Rats
Pyruvaldehyde
Oxidative Stress
Glyoxal
Transgenic Rats
Streptozocin
Medical problems
Hyperglycemia
F2-Isoprostanes
Tissue
Plasmas
Diabetic Angiopathies
Mitochondrial Proteins
Oxidative Phosphorylation
Malondialdehyde
Lipid Peroxidation
Muscle

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Cite this

Brouwers, O., Niessen, P. M., Ferreira, I., Miyata, T., Scheffer, P. G., Teerlink, T., ... Schalkwijk, C. G. (2011). Overexpression of glyoxalase-I reduces hyperglycemiainduced levels of advanced glycation end products and oxidative stress in diabetic rats. Journal of Biological Chemistry, 286(2), 1374-1380. https://doi.org/10.1074/jbc.M110.144097

Overexpression of glyoxalase-I reduces hyperglycemiainduced levels of advanced glycation end products and oxidative stress in diabetic rats. / Brouwers, Olaf; Niessen, Petra M.; Ferreira, Isabel; Miyata, Toshio; Scheffer, Peter G.; Teerlink, Tom; Schrauwen, Patrick; Brownlee, Michael; Stehouwer, Coen D.; Schalkwijk, Casper G.

In: Journal of Biological Chemistry, Vol. 286, No. 2, 14.01.2011, p. 1374-1380.

Research output: Contribution to journalArticle

Brouwers, O, Niessen, PM, Ferreira, I, Miyata, T, Scheffer, PG, Teerlink, T, Schrauwen, P, Brownlee, M, Stehouwer, CD & Schalkwijk, CG 2011, 'Overexpression of glyoxalase-I reduces hyperglycemiainduced levels of advanced glycation end products and oxidative stress in diabetic rats', Journal of Biological Chemistry, vol. 286, no. 2, pp. 1374-1380. https://doi.org/10.1074/jbc.M110.144097
Brouwers, Olaf ; Niessen, Petra M. ; Ferreira, Isabel ; Miyata, Toshio ; Scheffer, Peter G. ; Teerlink, Tom ; Schrauwen, Patrick ; Brownlee, Michael ; Stehouwer, Coen D. ; Schalkwijk, Casper G. / Overexpression of glyoxalase-I reduces hyperglycemiainduced levels of advanced glycation end products and oxidative stress in diabetic rats. In: Journal of Biological Chemistry. 2011 ; Vol. 286, No. 2. pp. 1374-1380.
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