Skin autofluorescence, renal insufficiency and retinopathy in patients with type 2 diabetes
Journal of Diabetes and its Complications(2017)
摘要
Objectives
Advanced glycation end-products (AGEs) are involved in diabetic retinopathy (DR). Their accumulation in tissues can be analyzed by measuring the skin autofluorescence (sAF). We hypothesized that renal insufficiency, another cause of high sAF, may disturb the relation between sAF and DR.
Research Design and Methods
We measured sAF with an AGE-Reader in 444 patients with type 2 diabetes (T2D), and we analyzed their retinal status. The associations of sAF with DR, and interaction with renal insufficiency were estimated by multivariate logistic regression analysis.
Results
Mean age was 62years (standard deviation (SD) 10years), diabetes duration 13 (9) years and mean HbA1C 8.9% (1.8). The prevalence of DR was 21.4% and increased with age, diabetes duration, arterial hypertension, renal parameters (serum creatinine and albumin excretion rates), and sAF. The prevalence of macular edema (ME) was 8.6% and increased with the duration of diabetes, but not with sAF (p=0.11). There was a significant interaction between renal insufficiency and sAF for the relation with DR or ME (p=0.02). For the 83% patients without renal insufficiency (estimated GFR>60mL/min/1.73m2), sAF was related to DR or ME after multivariate adjustment: OR 1.87 (1.09–3.19). The 17% patients with renal insufficiency had the highest rates of DR or ME (38.6%) and the highest sAF, unrelated to each other.
Conclusions
In T2D patients with renal insufficiency, the high sAF does not relate to retinopathy, which should be systematically searched due to its high frequency. For other patients, a high sAF argues for DR screening.
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关键词
skin autofluorescence,type 2 diabetes,retinopathy,nephropathy
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