Catalase/superoxide dismutase (SOD) and catalase/paraoxonase (PON) ratios may implicate poor glycemic control
Küçük Resim Yok
Tarih
2001
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Background. Previous studies suggest that elevated oxidative stress implicates poor glycemic control resulting in the development of diabetic complications. By evaluating the relationship between paraoxonase (PON) and antioxidant enzyme activities and glycemic control in diabetic patients with and without complications, we investigated whether there is a role of PON and/or antioxidant status in glycemic control. Methods. A total of 107 patients with type 2 diabetes mellitus (DM) was included in the study. Seventy-five patients had complications including microangiopathy, proliferative retinopathy, and/or nephropathy while 32 had no complications. The control group consisted of 29 age- and sex-matched healthy persons. Serum superoxide dismutase (SOD) and catalase activities were measured according to Sun and Goth, respectively. Basal and salt-stimulated paraoxonase activities and arylesterase activity were determined using the method of Eckerson et al. Results. There was an increase in the catalase activity and a decrease in the basal and salt-stimulated PON activity of patients when compared with controls, while no significant difference was observed in SOD activity. PON phenotypes had no effect on any parameter in patient and control groups. The ratio of catalase/SOD was 2.44 +/- 7.10 and 0.17 +/- 0.09 in diabetics and controls, respectively (p = 0.004); this was associated with an elevation in HbA1c levels. On the other hand, catalase/PON ratio was also enhanced in diabetic patients (2.8 +/- 5.2), showing a relationship with HbA1c levels compared to controls (0.29 +/- 0.3, p = 0.000). Conclusions. The data of this study reveal that enhanced catalase/SOD acid catalase /PON ratios that are correlated with HbA1c levels are observed in diabetic patients; thus, these ratios may be used as markers of poor glycemic control and as risk factors in the development of diabetic complications. (C) 2001 IMSS. Published by Elsevier Science Inc.
Açıklama
Anahtar Kelimeler
type 2 diabetes mellitus, catalase, superoxide dismutase, paraoxonase
Kaynak
Archives of Medical Research
WoS Q Değeri
Q4
Scopus Q Değeri
Q1
Cilt
32
Sayı
4
