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中华肾病研究电子杂志 ›› 2024, Vol. 13 ›› Issue (05) : 268 -272. doi: 10.3877/cma.j.issn.2095-3216.2024.05.005

论著

老年人血清铁与C 反应蛋白的比值及25-羟基维生素D3 与肾功能受损的关系研究
刘思含1, 张静2,()   
  1. 1.100069 北京,丰台妇幼保健院
    2.100853 北京,中国人民解放军总医院第一医学中心肿瘤内科
  • 收稿日期:2023-11-21 出版日期:2024-10-28
  • 通信作者: 张静

Relationship of 25-hydroxyvitamin D3 and the ratio of serum iron to C-reactive protein with renal function impairment in the elderly

Sihan Liu1, Jing Zhang2,()   

  1. 1.Maternal and Child Health Hospital,Beijing 100069
    2.Department of Oncology, First Medical Center of Chinese PLA General Hospital, Beijing 100853; China
  • Received:2023-11-21 Published:2024-10-28
  • Corresponding author: Jing Zhang
引用本文:

刘思含, 张静. 老年人血清铁与C 反应蛋白的比值及25-羟基维生素D3 与肾功能受损的关系研究[J]. 中华肾病研究电子杂志, 2024, 13(05): 268-272.

Sihan Liu, Jing Zhang. Relationship of 25-hydroxyvitamin D3 and the ratio of serum iron to C-reactive protein with renal function impairment in the elderly[J]. Chinese Journal of Kidney Disease Investigation(Electronic Edition), 2024, 13(05): 268-272.

目的

探讨血清铁与C 反应蛋白比值联合25-羟基维生素D3 与老年人肾功能受损的关系。

方法

采用横断面研究设计,选取2017 至2022 年于我院健康体检的6 512 例老年人群,根据肾小球滤过率分为肾功能正常组和肾功能受损组[GFR <60 ml/(min·1.73 m2)]。 采用限制性立方样条和多因素Logistic 模型方法分析血清铁与C 反应蛋白比值、25-羟基维生素D3 与肾功能受损的相关性,接受者操作特性曲线评估其临床诊断价值。

结果

6 512 例老年人年龄(65.52 ±5.24)岁,男性占比64.3%,肾功能受损率42.5%。 调整年龄、性别、身体质量指数、舒张压、总胆固醇、空腹血糖、同型半胱氨酸、叶酸等因素后,多因素Logistic 回归分析结果显示,25-羟基维生素D3 水平与肾功能受损的患病率呈负相关(P <0.05),而血清铁与C 反应蛋白比值与肾功能受损的患病率亦呈负相关,后者在老年男性更为显著(P <0.05)。 此外,血清铁与C 反应蛋白比值联合25-羟基维生素D3 诊断肾功能受损的曲线下面积为0.8295。

结论

老年人的血清铁与C 反应蛋白比值和25-羟维生素D3,与肾功能受损的患病率呈负相关。

Objective

To investigate the relationship of 25-hydroxyvitamin D3 and the ratio of serum iron to C-reactive protein with renal function impairment in the elderly.

Methods

A cross-sectional study design was conducted,and 6512 people who underwent health examinations from 2017 to 2022 in our hospital were enrolled. Based on their glomerular filtration rate,the subjects were divided into the normal renal group and the abnormal renal function group (GFR <60 ml/min/1.73 m2). Restricted cubic splines and multivariate logistic model were used to analyze the relationship of 25-hydroxyvitamin D3 and the ratio of serum iron to C-reactive protein with the renal function impairment in the elderly. The recipient operating characteristic curve and decision curve analysis methods were used to evaluate their clinical diagnostic value.

Results

The average age of the 6512 elderly people was 65.52 ±5.24 years old,and the rate of renal function impairment was 42.5%,with the male accounting for 64.3% of the total. After adjusting for age,gender,body mass index,diastolic blood pressure,total cholesterol,fasting blood glucose,homocysteine,folic acid,and other factors,the results of multivariate logistic regression analysis showed that 25-hydroxyvitamin D3 level was negatively correlated with the prevalence of renal function impairment (P <0.05),and so was the ratio of serum iron to C-reactive protein,with the latter being more significant in the male (P <0.05). In addition,the area under the curve of 25-hydroxyvitamin D3 plus the ratio of serum iron to C-reactive protein was 0. 8295 for diagnosis of the renal function impairment.

Conclusion

25-hydroxyvitamin D3 and the ratio of serum iron to C-reactive protein were inversely correlated with the prevalence of renal function impairment in the elderly.

表1 老年人群不同肾功能的临床特征
项目 肾功能正常(3745例) 肾功能受损(2767例) t//Z/χ2 P
年龄(岁) 65.06±5.05 66.16±5.43 -8.3918 <0.001
BMI(kg/m2 25.70±3.04 25.26±3.23 5.6655 <0.001
腰围(cm) 92.41±9.20 88.67±10.00 15.6296 <0.001
收缩压(mmHg) 129.50±18.56 131.18±19.66 -3.5026 <0.001
舒张压(mmHg) 82.63±11.44 81.95±11.89 2.3031 0.021
空腹血糖(mmol/L) 6.01±1.42 6.05±1.68 -0.9818 0.326
C-反应蛋白(mg/L) 0.09(0.04~0.17) 0.10(0.05~0.19) 4764036 0.670
血红蛋白(g/L) 145.62±13.86 135.12±12.43 31.4741 <0.001
叶酸(mmol/L) 9.79±4.80 11.22±4.80 -11.9351 <0.001
同型半胱氨酸(μmol/L) 14.80±7.35 11.62±4.87 19.7937 <0.001
总胆固醇(mmol/L) 4.48±1.00 4.75±1.02 -10.5513 <0.001
低密度脂蛋白胆固醇(mmol/L) 3.00±0.96 3.18±0.98 -7.4749 <0.001
甘油三酯(mmol/L) 1.64±1.05 1.57±0.97 2.6115 0.009
高密度脂蛋白胆固醇(mmol/L) 1.23±0.32 1.35±0.36 -14.6623 <0.001
尿酸(μmol/L) 364.07±78.20 298.29±67.87 35.4645 <0.001
肌酐(μmol/L) 81.25±21.51 55.76±7.00 60.0444 <0.001
25-羟基维生素D3(ng/ml) 22.99±7.10 20.74±6.64 12.9639 <0.001
血清铁-C反应蛋白比值 2201.88(955.86~5336.88) 1408.00(652.78~3327.50) 6026035 <0.001
血清铁(μmol/L) 20.54±6.24 18.80±5.38 11.639 <0.001
中性粒细胞百分比 0.58±0.08 0.57±0.09 7.574 <0.001
单核细胞百分比 0.07±0.02 0.06±0.01 10.336 <0.001
淋巴细胞百分比 0.31±0.08 0.34±0.08 12.043 <0.001
白细胞计数(×109/L) 5.94±1.52 5.60±1.53 9.017 <0.001
性别[例(%)] 2176.0859 <0.001
3299(88.09) 887(32.06)
446(11.91) 1880(67.94)
图1 老年人群血清铁与C 反应蛋白比值、25-羟基维生素D3 与肾功能受损的关联
表2 血清铁与C 反应蛋白比值、25-羟基维生素D3 与肾功能受损的相关性分析
图2 血清铁与C 反应蛋白比值联合25-羟基维生素D3 诊断肾功能受损的诊断 注:ROC 曲线,图中ROC 曲线阴影为Bootstrap 重复抽样500 次计算的置信区间
表3 血清铁与C 反应蛋白比值联合25-羟基维生素D3诊断肾功能受损的ROC 分析
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