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Masahiko Yamamoto, Kazuya Fujihara, Masahiro Ishizawa, Taeko Osawa, Masanori Kaneko, Hajime Ishiguro, Yasuhiro Matsubayashi, Hiroyasu Seida, Nauta Yamanaka, Shiro Tanaka, Satoru Kodama, Hiruma Hasebe, Hirohito Sone; Overt Proteinuria, Moderately Reduced eGFR and Their Combination Are Predictive of Severe Diabetic Retinopathy or Diabetic Macular Edema in Diabetes. Invest. Ophthalmol. Vis. Sci. 2019;60(7):2685-2689. doi: 10.1167/iovs.19-26749.
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Since the combined effects of proteinuria and a moderately decreased eGFR on incident severe eye complications in patients with diabetes are still largely unknown, these associations were determined in a large historical cohort of Japanese patients with diabetes mellitus.
We evaluated the effects of overt proteinuria (OP) (dipstick 1+ and over) and/or moderately reduced estimated glomerular filtration rate (eGFR) (MG) (baseline eGFR 30.0–54.9 mL/min/1.73 m2) on the incidence of treatment-required diabetic eye diseases (TRDED). We divided 7709 patients into four groups according to the presence or absence of OP and MG: no OP without MG (NP[MG−]), OP without MG (OP[MG−]), no OP with MG (NP[MG+]), and OP with MG (OP[MG+]). Multivariate Cox analyses were performed to calculate hazard ratios (HRs) with 95% confidence intervals for combinations of the presence and/or absence of OP and MG on the risk of developing TRDED.
During the median follow-up period of 5.6 years, 168 patients developed TRDED. HRs for OP and MG for incident TRDED were 1.91 (95% confidence interval, 1.27–2.87) and 1.90 (1.11–3.23), respectively. HRs for incident TRDED were 1.73 (1.11–2.69) and 5.57 (2.40–12.94) for OP(MG−) and OP(MG+), respectively, in comparison with NP(MG−).
In Japanese patients with diabetes, OP and MG were separately as well as additionally associated with higher risks of TRDED. Results indicate the necessity of the simultaneous assessment of proteinuria and eGFR for appropriate evaluation of risks of severe eye complications in patients with diabetes.
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