目的 探讨血清胱抑素C（SCys-C）、同型半胱氨酸（Hcy）及尿微量白蛋白（UmAlb）在高血压患者肾损害早期评估中的应用价值。方法 选择2022年9月—2023年9月期间福建中医药大学附属第三人民医院接收的150例高血压患者作为观察组,另选择健康体检者150例为对照组,测定肾小球滤过率（GFR）、SCys-C、Hcy、UmAlb,比较不同血压程度及对照组的各指标水平,比较观察组各指标检测阳性率及诊断符合率,依据GFR值评估肾损害程度,比较不同肾损害程度患者的SCys-C、Hcy、UmAlb水平。结果 高血压2级、高血压3级患者SCys-C、Hcy、UmAlb水平高于高血压1级患者（t=5.255、10.976、21.578,P<0.05;t=7.378、18.012、23.708,P<0.05）及对照组患者（t=8.308、19.675、31.891,P<0.05;t=10.661、31.511、21.578,P<0.05）,高血压3级患者高于高血压2级患者（t=2.776、12.725、7.779,P<0.05）。观察组肾损害患者SCys-C、Hcy、UmAlb的阳性率79.41%、73.53%、83.82%高于无肾损害患者的阳性率6.10%、4.88%、6.10%（χ²=83.733、76.040、92.613,P<0.05）。观察组中重度肾损害、轻度肾损害患者的SCys-C、Hcy、UmAlb水平高于无损害患者（t=7.567、24.214、30.836,P<0.05;t=5.783、16.054、25.164,P<0.05）,中重度肾损害高于轻度肾损害患者（t=2.685、7.179、9.561,P<0.05）。结论 高血压分级越高患者的SCys-C、Hcy、UmAlb水平越高,各指标联合检测的阳性率高,而且SCys-C、Hcy、UmAlb水平越高,肾损害程度越严重。

Objective To explore the application value of serum cystatin C（SCys-C）,homocysteine（Hcy） and urinary microalbumin（UmAlb）in early assessment of renal damage in hypertensive patients．Methods A total of 150 hypertensive patients admitted to the Third People’s Hospital Affiliated to Fujian University of Traditional Chinese Medicine from September 2022 to September 2023 were selected as the observation group,and 150 healthy individuals were selected as the control group．Glomerular filtration rate（GFR）,serum cystatin C（SCys-C）,homocysteine（Hcy）,and UmAlb were measured,and the levels of various indicators in different blood pressure levels and the control group were compared．The positive rate and diagnostic accuracy of each indicator in the observation group were compared,and the degree of renal damage was evaluated based on GFR values．The levels of SCys-C,Hcy and UmAlb in patients with different degrees of renal damage were compared．Results The levels of SCys-C,Hcy and UmAlb in patients with grade 2 and grade 3 hypertension were significantly higher than those in patients with grade 1 hypertension（t=5.255,10.976,21.578,P<0.05;t=7.378,18.012,23.708,P<0.05）,as well as in the control group（t=8.308,19.675,31.891,P<0.05;t=10.661,31.511,21.578,P<0.05）,patients with grade 3 hypertension were significantly higher than those with grade 2 hypertension（t=2.776,12.725,7.779,P<0.05）．The positive rates of SCys-C,Hcy and UmAlb in patients with renal injury in the observation group were 79.41%,73.53% and 83.82%,which were significantly higher than the positive rates of 6.10%,4.88% and 6.10% in patients without renal injury（χ²=83.733,76.040,92.613,P<0.05）．The levels of SCys-C,Hcy and UmAlb in patients with severe and mild kidney damage in the observation group were significantly higher than those in patients without damage（t=7.567,24.214,30.836,P<0.05;t=5.783,16.054,25.164,P<0.05）,patients with moderate to severe kidney damage were significantly higher than those with mild kidney damage（t=2.685,7.179,9.561,P<0.05）．Conclusions The higher the grading of hypertension,the higher the levels of SCys-C,Hcy and UmAlb in patients,and the higher the positive rate of combined detection of various indicators．Moreover,the higher the levels of SCys-C,Hcy and UmAlb,the more severe the renal damage．

目的 探讨血清胱抑素C（Cys-C）联合β₂-微球蛋白（β₂-MG）早期诊断糖尿病肾病的应用价值。方法 选择2021年4月—2023年4月医院接收的100例糖尿病患者为对象,根据其有无合并肾脏疾病,将其分为糖尿病组及糖尿病肾病组,各50例,同比例选取同期到我院体检的健康人群50名进行对照研究,检测比较其Cys-C及β₂-MG水平,对比其Cys-C阳性率、β2-MG阳性率及联合检测阳性率,并对比不同疾病分期糖尿病肾病患者的Cys-C、β₂-MG水平。结果 糖尿病肾病患者Cys-C、β₂-MG水平高于糖尿病患者与健康者（P<0.05）。糖尿病患者Cys-C、β₂-MG水平高于健康者（P<0.05）。糖尿病肾病患者Cys-C阳性率64.00%、β₂-MG阳性率72.00%、Cys-C+β₂-MG联合检测阳性率96.00%高于糖尿病6.00%、10.00%、12.00%及健康者0.00%、0.00%、0.00%（P<0.05）;糖尿病Cys-C+β₂-MG联合检测阳性率12.00%高于健康者0.00%（P<0.05）;糖尿病肾病中Cys-C+β₂-MG联合检测阳性率96.00%高于CysC 64.00%、β₂-MG 72.00%（P<0.05）。糖尿病肾病不同分期患者Cys-C、β₂-MG水平比较,Ⅳ期>Ⅲ期>Ⅰ~Ⅱ期（P<0.05）。结论 糖尿病肾病患者Cys-C、β₂-MG水平明显升高,Cys-C、β₂-MG联合诊断更具有优势,而且肾损害越严重,Cys-C、β₂-MG异常程度越高,作为临床诊治的参考依据的价值较高。

Objective To investigate the application value of serum cystatin C（Cys-C）combined with β₂-microglobulin（β₂-MG）in the early diagnosis of diabetic nephropathy．Methods A total of 100 diabetic patients admitted to our hospital from April 2021 to April 2023 were selected as subjects,and divided into diabetes group and diabetic nephropathy group according to whether they have renal diseases or not,with 50 cases in each group．Then,50 healthy people who came to our hospital for physical examination in the same period were selected for comparative study,and their Cys-C and β₂-MG levels were detected and compared,and their Cys-C positive rate,β₂-MG positive rate and combined detection positive rate were compared．Results The levels of Cys-C and β₂-MG in patients with diabetic nephropathy were higher than those in patients with diabetes and healthy controls（P<0.05）．The levels of Cys-C and β₂-MG in diabetic patients were higher than those in healthy controls（P<0.05）．The positive rates of Cys-C（64.00%）,β₂-MG（72.00%）and Cys-C+β₂-MG（96.00%）in patients with diabetic nephropathy were higher than those in patients with diabetes（6.00%,10.00%,12.00%）and healthy subjects（0.00%,0.00%,0.00%）（P<0.05）．The positive rate of combined detection of Cys-C and β₂-MG in diabetic patients（12.00%）was higher than that in healthy subjects（0.00%）（P<0.05）．The positive rate of Cys-C combined with β₂-MG in diabetic nephropathy was 96.00%,which was higher than that of Cys-C 64.00% and β₂-MG 72.00%（P<0.05）．The levels of Cys-C and β₂-MG in patients with stage Ⅳ diabetic nephropathy were higher than those in patients with stage Ⅲ and Ⅰ-Ⅱ diabetic nephropathy（P<0.05）．The levels of Cys-C and β₂-MG in stage Ⅲ patients were higher than those in stage Ⅰ-Ⅱ patients（P<0.05）．Conclusions The levels of Cys-C and β₂-MG are significantly increased in patients with diabetic nephropathy,and the combination of Cys-C and β₂-MG has more advantages．The greater serious renal damage,the greater abnormal degree of Cys-C and β₂-MG,which has a higher value as a reference for clinical diagnosis and treatment．