Diabetic medicine : a journal of the British Diabetic Association · 2014
Vitamin D deficiency increases the risk of retinopathy in Chinese patients with type 2 diabetes.
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He R, Shen J, Liu F, Zeng H, Li L, Yu H, Lu H, Lu F, Wu Q, Jia W
Аннотация
AIMS: To investigate the relationship between vitamin D deficiency and diabetic retinopathy.
METHODS: In total, 1520 patients with Type 2 diabetes were recruited and divided into three groups according to their fundus oculi results: no diabetic retinopathy (n = 625, 41.12%); non-sight-threatening diabetic retinopathy (n = 562, 36.97%); and sight-threatening diabetic retinopathy (n = 333, 21.91%). Vitamin D deficiency was defined as a serum circulating 25-hydroxyvitamin D level < 20 ng/ml. Clinical characteristics and biochemical parameters were detected and compared.
RESULTS: The patients with sight-threatening diabetic retinopathy had significantly lower serum 25-hydroxyvitamin D concentrations and higher prevalence of vitamin D deficiency than other two groups (all P < 0.05). In addition, there was a downward trend in average 25-hydroxyvitamin D level with the increased stages of diabetic retinopathy (P < 0.01). The prevalence of diabetic retinopathy and sight-threatening diabetic retinopathy in patients with vitamin D deficiency was also higher than in those without vitamin D deficiency (both P < 0.01). After adjusting for all potential confounders, vitamin D deficiency was still associated with increased risk of diabetic retinopathy (odds ratio 1.93) and sight-threatening diabetic retinopathy (odds ratio 2.42) (both P < 0.01). Logistical regression analysis further revealed that vitamin D deficiency was an independent risk factor for diabetic retinopathy (β = 0.66) and sight-threatening diabetic retinopathy (β = 0.93) (both P < 0.01). ROC analysis indicated that a serum 25-hydroxyvitamin D level < 15.57 ng/ml suggested the occurrence of sight-threatening diabetic retinopathy (odds ratio 2.38, P < 0.01).
CONCLUSIONS: Vitamin D deficiency is an independent risk factor for diabetic retinopathy and sight-threatening diabetic retinopathy. The prevalence of sight-threatening diabetic retinopathy doubles when the serum 25-hydroxyvitamin D level is < 15.57 ng/ml.
METHODS: In total, 1520 patients with Type 2 diabetes were recruited and divided into three groups according to their fundus oculi results: no diabetic retinopathy (n = 625, 41.12%); non-sight-threatening diabetic retinopathy (n = 562, 36.97%); and sight-threatening diabetic retinopathy (n = 333, 21.91%). Vitamin D deficiency was defined as a serum circulating 25-hydroxyvitamin D level < 20 ng/ml. Clinical characteristics and biochemical parameters were detected and compared.
RESULTS: The patients with sight-threatening diabetic retinopathy had significantly lower serum 25-hydroxyvitamin D concentrations and higher prevalence of vitamin D deficiency than other two groups (all P < 0.05). In addition, there was a downward trend in average 25-hydroxyvitamin D level with the increased stages of diabetic retinopathy (P < 0.01). The prevalence of diabetic retinopathy and sight-threatening diabetic retinopathy in patients with vitamin D deficiency was also higher than in those without vitamin D deficiency (both P < 0.01). After adjusting for all potential confounders, vitamin D deficiency was still associated with increased risk of diabetic retinopathy (odds ratio 1.93) and sight-threatening diabetic retinopathy (odds ratio 2.42) (both P < 0.01). Logistical regression analysis further revealed that vitamin D deficiency was an independent risk factor for diabetic retinopathy (β = 0.66) and sight-threatening diabetic retinopathy (β = 0.93) (both P < 0.01). ROC analysis indicated that a serum 25-hydroxyvitamin D level < 15.57 ng/ml suggested the occurrence of sight-threatening diabetic retinopathy (odds ratio 2.38, P < 0.01).
CONCLUSIONS: Vitamin D deficiency is an independent risk factor for diabetic retinopathy and sight-threatening diabetic retinopathy. The prevalence of sight-threatening diabetic retinopathy doubles when the serum 25-hydroxyvitamin D level is < 15.57 ng/ml.