终末期肾脏病患者血清中铁调素的水平变化及其与铁代谢的关系

目的研究维持性血液透析(maintenance hemodialysis,MHD)患者、非透析终末期肾脏病(end-stage renal disease,ESRD)患者血清中铁调素的水平及与其铁代谢的关系。方法选择MHD患者30例、非透析ESRD患者30例及健康体检者30例。酶联免疫吸附法检测血清铁调素、总铁结合力(total iron binding capacity,TIBC),同时测定血清铁、铁蛋白(ferritin,Fer)、血清转铁蛋白(transferrin,TRF),比较组间差异。结果 MHD患者和非透析ESRD患者血清铁调素水平显著高于正常人群,差异有统计学意义(P<0.01);MHD患者血清铁调素水平高于非透析ESRD患者,差异有统计学意义(P<0.05)。相关分析显示,血清铁调素与血清肌酐、高敏C反应蛋白(high sensitivity C-reactiveprotein,hs-CRP)、全段甲状旁腺激素、Fer呈正相关(r分别为0.969、0.515、0.290、0.286,均P<0.01);与血红蛋白(hemoglobin,Hb)、红细胞计数(red blood cell,RBC)、估算肾小球滤过率(estimated glomerular filtration rate,eGFR)、血细胞比容、TRF、Fe、TIBC、白蛋白、总蛋白呈负相关(r分别为-0.543、-0.540、-0.534、-0.466、-0.362、0.360、-0.285、-0.248、-0.224,P<0.05)。多元逐步回归分析显示,非透析ESRD患者中RBC、Hb、hs-CRP、Fer、TRF、TIBC与铁调素水平密切相关;MHD患者中RBC、Hb、eGFR、Fer、TIBC与铁调素水平密切相关。在非透析ESRD患者中,血清铁调素的受试者工作特征曲线(receiver operating characteristic curve,ROC)曲线下面积为86.3%,其敏感性和特异性分别为76.7%和99.1%;在MHD患者中,血清铁调素的ROC曲线下面积为84.6%,其敏感性和特异性分别为73.0%和99.8%。结论 ESRD患者血清铁调素水平明显增加,铁调素参与铁代谢、红细胞生成的调控,可能为反映铁储备状态的一种新型血清标志物。

Relationship between serum hepcidin level and iron metabolism in patients with end-stage renal disease

Objective To investigate the relationship between serum hepcidin level and iron metabolism in end-stage renal disease(ESRD) patients with maintenance hemodialysis(MHD) and those without dialysis.Methods A total of 30 ESRD patients with MHD,30 ESRD patients without dialysis,and 30 healthy people as the controls were enrolled in this study.Serum hepcidin and total iron-binding capacity(TIBC) were measured by ELISA.Serum Fe,ferritin(FER) and transferrin(TRF) were measured by routine methods.Data were compared ...