目的:探讨老年男性2型糖尿病(T2DM)患者25-羟维生素D[25(OH)D]、甲状旁腺素(PTH)、骨转换指标与肾小球滤过率(GFR)的相关性。方法:纳入病程10年以上非透析男性T2DM患者年龄60～86(69.8±5.7)岁的住院老年患者206例(老年组)，同时纳入年龄40～59(50.1±5.3)岁的中年患者220例(中年组)，共426例。根据CKD-EPI公式估算肾小球滤过率(eGFR)分为CKD1期、CKD2期、CKD3期和CKD4/5期4组。电化学发光免疫法检测各组25(OH)D、PTH、Ⅰ型原胶原N-端前肽(P1NP)、Ⅰ型胶原交联C端肽(β-CTX)水平。结果:426例患者中位25(OH)D水平为17.10 μg/L(11.30～21.60)，维生素D缺乏292例(68.5%)。老年组中位25(OH)D水平低于中年组(15.10 μg/L和17.15 μg/L，n Z＝－2.165，n P＝0.030)，两组维生素D缺乏比例差异无统计学意义(68.4%和68.6%，n χ2＝0.002，n P＝0.966)。随eGFR下降，老年维生素D缺乏比例逐渐增高。老年组CKD3期25(OH)D水平分别较CKD1期和CKD2期两组下降(10.85 μg/L和16.80 μg/L，n Z＝－2.808，n P＝0.005；10.85 μg/L和15.60 μg/L，n Z＝－2.099，n P＝0.044)，CKD4/5期较CKD3期进一步下降(6.65 μg/L和10.85 μg/L，n Z＝－1.956，n P＝0.048)；中年患者CKD4/5组期显著下降。患者PTH、β-CTX水平与25(OH)D水平呈负相关(n r＝－0.348、－0.263，均n P<0.001)，其负相关趋势受eGFR影响。n 结论:老年非透析男性T2DM患者PTH和骨转换指标β-CTX与25(OH)D呈负相关，且受eGFR影响。“,”Objective:To investigate the correlation of 25-hydroxyvitamin D [25(OH)D], parathyroid hormone(PTH)and bone turnover markers with the glomerular filtration rate(GFR)in elderly male patients with type 2 diabetes mellitus.Methods:The study included a total of 426 non-dialyzed male T2DM patients with a disease course of more than 10 years, of whom 206 aged 60-86 years(the elderly group, 69.8±5.7 years old)and 220 aged 40-59 years(the middle-aged group, 50.1±5.3 years old). According to the estimated GFR(eGFR)calculated using the CKD-EPI formula, patients in each group were divided into four subgroups: Group 1(at CKD1 stage), Group 2(at CKD2 stage), Group 3(at CKD3 stage)and Group 4(at CKD4/5 stage). Levels of 25(OH)D, parathyroid hormone(PTH), procollagen type 1 N-terminal propeptide(P1NP), and C-terminal telopeptide of type Ⅰ collagen(β-CTX)in each group were measured.Results:The median level of 25(OH)D was 17.10(11.30-21.60) μg/L in 426 patients, of whom 292(68.5%)showed vitamin D deficiency.The level of 25(OH)D decreased significantly in the elderly group compared with the middle-aged group(15.10 μg/L n vs. 17.15 μg/L, n Z=-2.165, n P=0.030), while the proportions of patients with vitamin D deficiency were similar in the two groups(68.4% n vs. 68.6%, n χ2=0.002, n P=0.966). With decreasing eGFR, the proportion of patients with vitamin D deficiency gradually increased in the elderly.In the elderly cases, compared with the Group 1 and Group 2, the level of 25(OH)D in Group 3 dropped significantly (10.85 μg/L n vs. 16.80 μg/L, n Z=-2.808, n P=0.005; 10.85 μg/L n vs. 15.60 μg/L, n Z=-2.099, n P=0.044), and Group 4 showed an even more pronounced decrease than Group 3(6.65 μg/L n vs. 10.85 μg/L, n Z=-1.956, n P=0.048). The level of 25(OH)D decreased significantly in the middle-aged patients at the CKD4/5 stage.The levels of PTH and β-CTX were negatively correlated with the 25(OH)D level( n r=-0.348 and -0.263, n P<0.001), and the level of negative correlation was affected by eGFR.n Conclusions:In non-dialysis elderly male patients with T2DM, PTH and bone turnover marker β-CTX levels are negatively correlated with the 25(OH)D level, and the negative correlations are affected by eGFR.