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Erythrocyte glutathione transferase activity: a possible early biomarker for blood toxicity in uremic diabetic patients

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Abstract

Erythrocyte glutathione transferase (e-GST) displays increased activity in patients with renal damage and positive correlation with homocysteine (Hcy) in patients under maintenance hemodialysis. Here, we determined e-GST, Hcy, and erythrocyte catalase (e-CAT) in 328 patients affected by type 2 diabetes mellitus (T2DM), 61 diabetic non-nephropathic patients and 267 affected by diabetes and by chronic kidney disease (CKD) under conservative therapy subdivided into four stages according to K-DOQI lines. e-GST activity was significantly higher in all T2DM patients compared to the control group (7.90 ± 0.26 vs. 5.6 ± 0.4 U/gHb), and we observed an enhanced activity in all subgroups of CKD diabetic patients. No significant correlation or increase has been found for e-CAT in all patients tested. Mean Hcy in diabetic patients is higher than that in healthy subjects (33.42 ± 1.23 vs. 13.6 ± 0.8 μM), and Hcy increases in relation to the CKD stage. As expected, a significant correlation was found between e-GST and Hcy levels. These findings suggest that e-GST hyperactivity is not caused directly by diabetes but by its consequent renal damage. e-GST, as well as Hcy, may represent an early biomarker of renal failure.

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Acknowledgments

We thank Dr. Olga Durante, Dr. Elisabetta Catena and Dr. Maria Paola Canale for technical assistance. Present study is partially supported by a Grant of Fondazione Roma—Terzo Settore assigned to Prof. G. Ricci.

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The authors declare no conflict of interest.

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Correspondence to Nicola Di Daniele.

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Communicated by Massimo Federici.

Annalisa Noce, Raffaele Fabrini and Mariarita Dessì have contributed equally to this work.

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Noce, A., Fabrini, R., Dessì, M. et al. Erythrocyte glutathione transferase activity: a possible early biomarker for blood toxicity in uremic diabetic patients. Acta Diabetol 51, 219–224 (2014). https://doi.org/10.1007/s00592-013-0497-3

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  • DOI: https://doi.org/10.1007/s00592-013-0497-3

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