目的:探讨分泌型卷曲相关蛋白5（SFRP5）、25羟维生素D[25（OH）D]、视黄醇结合蛋白4（RBP4）与老年2型糖尿病（T2DM）患者病情程度的关联性及对疗效评估的价值。方法:选取2018年1月至2019年10月江苏省无锡市太湖医院诊治的老年T2DM患者113例作为研究组，另选取同期健康体检者113例作为对照组。比较两组血清RBP4、SFRP5、25（OH）D水平，比较不同病情程度T2DM患者、有无血管并发症T2DM患者血清RBP4、SFRP5、25（OH）D水平，采用Spearman相关分析各指标与病情程度的关联性，采用Pearson相关分析各指标与胰岛素抵抗指数（HOMA-IR）的关联性，采用受试者工作特征（ROC）曲线及曲线下面积（AUC）分析SFRP5、25（OH）D、RBP4及三者联合检测预测T2DM患者血管病变的价值。结果:研究组RBP4、HOMA-IR水平高于对照组[（22.96 ± 2.26） μg/L比（11.28 ± 1.69） μg/L、3.83 ± 0.70比1.65 ± 0.59]，SFRP5、25（OH）D低于对照组[（9.28 ± 3.14） μg/L比（14.65 ± 3.38） μg/L、（32.65 ± 5.12）nmol/L比（51.29 ± 6.33） nmol/L]，差异均有统计学意义（n P<0.05）。T2DM重度组RBP4水平高于轻度组[（26.91 ± 2.51） μg/L比（19.35 ± 2.23） μg/L]，SFRP5、25（OH）D水平低于轻度组[（7.13 ± 2.98） μg/L比（11.25 ± 3.30） μg/L、（27.97 ± 4.56）nmol/L比（36.93 ± 5.50）nmol/L]，差异均有统计学意义（n P<0.05）。大血管病变患者SFRP5、25（OH）D水平最低，其次为微血管病变患者、无血管病变患者；大血管病变患者RBP4最高，其次为微血管病变患者、无血管病变患者，组间比较差异均有统计学意义（n P<0.05）。RBP4与病情程度、HOMA-IR呈正相关（n P<0.05），25（OH）D、SFRP5与病情程度、HOMA-IR呈负相关（n P21.45 μg/L ，灵敏度为57.69%，特异度为94.29%，SFRP5联合25（OH）D、RBP4预测血管病变的AUC为0.847，灵敏度为70.51%，特异度为85.71%。n 结论:在重度及伴有血管并发症老年T2DM患者中，血清SFRP5水平升高、25（OH）D、RBP4水平降低，并与患者病情程度、胰岛素抵抗显著相关，三者联合检测可预测发生血管病变的风险。“,”Objective:To investigate the correlation between the secreted frizzled related protein 5 (SFRP5), 25-hydroxy vitamin D [25(OH)D], retinol binding protein 4 (RBP4) and the degree of illness in elderly patients with type 2 diabetes mellitus (T2DM) and the evaluation value of curative effect.Methods:One hundred and thirteen elderly patients with T2DM who treatment in Taihu Hospital of Wuxi City from January 2018 to October 2019 were selected as the study group, and 113 healthy patients during the same period were selected as the control group. The serum levels of RBP4, SFRP5, and 25(OH)D were compared between the two groups, patients with different disease levels, and patients with or without vascular complications. Spearman was used to analyze the correlation between each index and the degree of illness, and Pearson was used to analyze the correlation between each index and the insulin resistance index (HOMA-IR). The receiver operating characteristic (ROC) curve and area under ROC (AUC) were used to analyze the value of SFRP5, 25(OH)D, RBP4 and the combination of the three to predict vascular disease in T2DM patients.Results:The levels of RBP4 , HOMA-IR in study group were higher than those in control group: (22.96 ± 2.26) μg/L vs.(11.28 ± 1.69) μg/L, 3.83 ± 0.70 vs.1.65 ± 0.59, the levels of SFRP5, 25(OH)D in study group were lower than those in control group: (9.28 ± 3.14) μg/L vs. (14.65 ± 3.38) μg/L, (32.65 ± 5.12) nmol/L vs. (51.29 ± 6.33) nmol/L, and the differences were statistically significant ( n P<0.05). The level of RBP4 in severe group was higher than that in mild group:(26.91 ± 2.51) μg/L vs. (19.35 ± 2.23) μg/L, the levels of SFRP5, 25(OH)D in severe group were lower than those in mild group: (7.13 ± 2.98) μg/L vs. (11.25 ± 3.30) μg/L, (27.97 ± 4.56) nmol/L vs. (36.93 ± 5.50) nmol/L, and the differences were statistically significant (n P<0.05). The levels of SFRP5, 25(OH)D in patients with macrovascular disease were the lowest, followed by those with microvascular and those without vascular disease; the level of RBP4 in patients with macrovascular disease was the lowest, followed by those with microvascular and those without vascular disease, and the differences were statistically significant (n P<0.05). There was a positive correlation between RBP4 and the degree of illness and HOMA-IR (n P<0.05), and there was a negative correlation between 25(OH)D and SFRP5 and the degree of illness and HOMA-IR (n P<0.05). The AUC of SFRP5 for predicting vascular disease was 0.721, and the cut-off value was ≤11.14 μg/L , with a sensitivity of 78.21%, and a specificity of 60.00%.The AUC of 25(OH)D for predicting vascular disease was 0.786, and the cut-off value was ≤ 36.56 nmol/L, with a sensitivity of 87.18%, and a specificity of 65.71%. The AUC of RBP4 for predicting vascular disease was 0.816, and the cut-off value was greater than 21.45 μg/L , with a sensitivity of 57.69% and a specificity of 94.29%. The AUC of SFRP5 + 25(OH)D + RBP4 for predicting vascular disease was 0.847, with a sensitivity of 70.51% and a specificity of 85.71% (n P<0.05).n Conclusions:In severe T2DM elderly patients with vascular complications, the levels of blood SFRP5, 25(OH)D and RBP4 are increased and significantly related to the patient′s condition and insulin resistance, and they can predict the occurrence of vascular disease.