Association between uric acid and referable diabetic retinopathy in patients with type 2 diabetes

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Association between uric acid and referable diabetic retinopathy in patients with type 2 diabetes

Plasmatic uric acid (UA) has been inconsistently associated with diabetic retinopathy (DR). Specific sight-threatening stages of DR have not been studied for their association with UA. Cross-sectional, comparative study. Between 2014 and 2018 we recruited 210 Mexican individuals > 18 years-old with type 2 diabetes (T2D). Clinical, ophthalmological and biochemical assessment was performed with standardized funduscopic examination. Certified readers classified DR stages. The association between DR and UA was assessed by multiple logistic regression analysis, calculating odds ratios (OR) and 95% CI, after adjustment for covariates. Two hundred and ten patients were included, 41 (19.5%) had referable DR. Subjects with referable (severe or worse) DR had longer diabetes duration, 22 (15–28) vs 15 (8–20) years (P < 0.01); higher levels of UA, 6.5 (5.8–8.1) vs 5.4 (4.5–6.6) mg/dL (P < 0.01); higher systolic blood pressure, 130 (120–140) vs 120 (110–130) mmHg (P < 0.01) ; higher diastolic blood pressure, 78.4 ± 9.7 vs 75.4 ± 9.2 mmHg (P = 0.03); and lower glomerular filtration rate, 54.1 (41.5–69.6) vs 87.3 (66.8–108.3) mL/min/1.73m2 (P < 0.01) compared with those without referable DR. With multiple logistic regression, after adjustment, per each unit of change (mg/dL) in UA the probability of having referable DR increased 45% (OR = 1.45, 95% CI 1.12–1.87, P < 0.01). When UA was evaluated as dichotomous variable, those with levels ≥ 7.8 mg/dL had almost two times (OR = 2.81, 95% CI 1.00–7.9., P = 0.049) the probability of having referable DR compared with those with levels < 7.8 mg/dL. UA may contribute to the microvascular damage in retinal vessels and therefore hyperuricemia could be a therapeutic target to prevent DR progression. © The Author(s) 2024.

Authors : Rivera-De-la-Parra D.; Hernández-Jiménez S.; Almeda-Valdés P.; Aguilar-Salinas C.A.; Graue-Hernández E.O.; Pérez-Peralta L.; Jiménez-Corona A.; Arcila-Martínez D.; Del Valle-Ramírez H.; Flores-García A.; García-Ulloa A.C.; Granados-Arcos M.; Hernández-Jasso A.; Hernández-Juárez D.; Infanzón-Talango H.; Landa-Anell V.; Lechuga-Fonseca C.; Melgarejo-Hernández M.A.; Palacios-Vargas A.; Rojas-Torres F.; Sainos-Muñoz S.; Velázquez-Jurado H.; Villegas-Narváez A.; Urbina-Arronte L.E.; Gómez-Pérez F.J.; Kershenobich-Stalnikowitz D.

Source : Nature Research