Dec 11, 2007

Increased serum advanced glycation end products are associated with impairment in HDL antioxidative capacity in diabetic nephropathy

Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association
Huali ZhouYing Wong


Advanced glycation end products (AGEs) play an important role in the pathogenesis of diabetic complications. Recent data suggest that AGEs may also interfere with the function of HDL and the reverse cholesterol transport pathway. We have investigated whether serum AGE level is associated with impairment in the antioxidative capacity of HDL and in the ability of serum to induce cholesterol efflux in type 2 diabetic patients with and without nephropathy. A total of 167 controls and 264 diabetic patients was recruited. The ability of serum to induce cellular cholesterol efflux and the capacity of HDL to inhibit LDL oxidation ex vivo was determined. Serum AGEs were assayed by competitive ELISA using a polyclonal rabbit antisera raised against AGE-RNase. Diabetic subjects were subdivided into three groups (normoalbuminuria, microalbuminuria and proteinuria). Serum AGEs were significantly increased in diabetic patients with microalbuminuria or proteinuria (P < 0.001). Cholesterol efflux was significantly decreased in all three groups of diabetic patients compared to controls (P < 0.001) whereas the antioxidative capacity of HDL was significantly impaired in patients with microalbuminuria or proteinuria (P < 0.01). No relationship bet...Continue Reading

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Mentioned in this Paper

Diabetes Mellitus, Non-Insulin-Dependent
Pathogenic Aspects
Diabetic Nephropathy
Log-Linear Models
Antioxidant Effect
Paraoxonase 1
Immune Sera

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