【摘要】 目的 以99mTc-DTPA肾动态显像法肾小球滤过率（glomerular filtration rate，GFR）测定为标准，将血清胱抑素C（cystatin C， CysC）检测与其比较，探讨CysC测定在2型糖尿病肾病（type 2 diabetic nephropathy，T2DN）诊断中的意义。 方法 2010年6月—2011年1月76例2型糖尿病（type 2 diabetes mellitus，T2DM）患者按24 h尿微量白蛋白（microalbuminuria，m-Alb）分为两组:正常蛋白尿组（31例）和微量蛋白尿组（45例），同时测定GFR、CysC、血清肌酐（serum creatinine， Scr）和糖化血红蛋白（hemoglobin A1c， HbA1c），并设正常自愿者38名作为对照组，进行统计学分析。 结果 对照组、T2DM正常蛋白尿组及T2DM微量蛋白尿组CysC水平分别为（1.1±0.6）、（1.6±0.7）、（1.0±0.3） mg/L，各组差异均有统计学意义（Plt;0.05）；HbA1c水平分别为（5.4±0.6）%、（7.1±2.7）%、（7.9±3.1）%、两组T2DM患者与对照组比较，差异均有统计学意义（Plt;0.05）；GFR水平分别为（80.9±23.0）、（74.2±26.1）、（79.3±19.7） mL/（min•1.73 m2），各组差异无统计学意义（Pgt;0.05）；Scr水平分别为（87.7±23.8）、（93.7±38.4）、（81.5±11.4） μmol/L，组间差异无统计学意义（Pgt;0.05）。CysC、Scr和GFR之间呈负相关（r=-0.694，-0.692；Plt;0.001）；CysC和Scr之间呈正相关（r=0.903，Plt;0.001）。 结论 CysC可作为早期T2DN的检测指标，具有较高的敏感性，但对于轻度到中度GFR降低的诊断准确性并不优于Scr。【Abstract】 Objective To demonstrate the clinical value of serum cystatin-C (CysC) in the assessment of renal function in type-2 diabetic nephropathy (T2DN) by comparing it with the glomerular filtration rate (GFR) measured by 99mTc-DTPA method. Methods From June 2010 to January 2011, 76 patients with type 2 diabetes mellitus (T2DM) were classified into two groups according to their 24 h microalbuminuria (m-Alb) level: the normal albuminuric group (n=31) and the microalbuminuric group (n=45). GFR, Serum creatinine (Scr), CysC, and hemoglobin A1c (HbA1c) were measured. Thirty-eight healthy subjects were recruited as the control group, and statistical analysis was carried out. Results The CysC levels in the control group, the normal albuminuric group and the microalbuminuria group were respectively (1.1±0.6), (1.6±0.7) and (1.0±0.3) mg/L, with a significant difference among the three groups (Plt;0.05). HbA1c level in the three groups were respectively (7.1±2.7)%, (7.9±3.1)% and (5.4±0.6)%, with a significant difference between the two diabetic groups and the control group (Plt;0.05). Scr levels in the three groups were respectively (87.7±23.8), (93.7±38.4), (81.5±11.4) μmol/L; GFR levels in the three groups were respectively (80.9±23.0), (74.2±26.1), (79.3±19.7) mL/(min•1.73 m2); among the three groups the differences of both Scr and GFR were not significant. Both CysC and Scr were negatively correlated with GFR (r=-0.694,-0.692;Plt;0.001), and CysC was positively correlated with Scr (r=0.903, Plt;0.001). Conclusion Increased CysC may be an early indicator of incipient diabetic nephropathy, but the diagnostic accuracy of CysC is not superior to that of Scr in distinguishing between mildly and moderately reduced GFR.
【摘要】 目的 评价尿蛋白与尿肌酐比值检测在子痫患者中的诊断意义。 方法 回顾分析 35例子痫患者的临床资料。患者年龄20~34岁,平均年龄(2681±639)岁;孕周22~34周,平均孕周(2902±419)周。平均血压(15620±1235 )mm Hg(1 mm Hg=0133 kPa)。均检测24 h尿蛋白及点时尿检测尿蛋白与尿肌酐比值,采用线形回归分析尿蛋白与尿肌酐比值与24 h尿蛋白结果相关性。结果 35例患者24 h尿蛋白水平(351±116) g/24 h,〖JP〗直线回归分析显示尿蛋白与尿肌酐比值与24 h尿蛋白水平呈正相关(R=0897,Plt;001)。结论 尿蛋白与尿肌酐比值可能是一个重要的用于子痫患者尿蛋白筛查的指标。【Abstract】 Objective To investigate the diagnostic significance of urinary spot protein:creatinine ratio in Eclampsia.Method Thirtfive pregnant patients suffering from eclampsia with average age of (2681±639) years old were enrolled in this study.All patients were examined both urinary protein over 24 hours and urinary spot protein:creatinine ratio. The correlation between urinary protein over 24 hours to urinary spot protein:creatinine ratio with linear regression were analyzed. Result The rinary protein of 35 patients over 24 hours were (351±116) g/24 h,meanwhile the urinary spot protein:creatinine ratio were (0345±017) g/mmol. With linear regression, urinary spot protein:creatinine ratio had a positive correlation with the data of urinary protein over 24 hours (R=0897,Plt;001). Conclusion The spot protein:creatinine ratio is a reasonable test for detecting proteinuria in eclampsia pregnancy.
摘要:目的:了解血肌酐清除率受损是否与冠心病患病率存在联系。方法:纳入2006年7月至2008年2月期间经冠状动脉造影证实的冠心病患者及年龄、性别匹配的对照组,按血肌酐清除率值将患者分为正常［≥90 mg/（mL·173 m2)］,轻度受损［≥60 mg/（mL·1.73 m2）,lt;90 mg/（mL·1.73 m2)］和明显受损［lt;60 mg/（mL·1.73 m2)］。比较冠心病组与对照组各组人群的比例有无差异。结果:研究期间共纳入冠心病组和对照组患者各116例。在冠心病组中,血肌酐清除率正常患者82例、轻度受损29例、重度受损5例,对照组中,正常患者98例、轻度受损13例、重度受损5例,〖JP3〗两组比较分布有统计学差异(χ2值7.517,P=0.023)。与对照组比较,冠心病组的血清肌酐值无明显差异（Pgt;005)，〖JP〗冠心病组（103.29±51.08） μmol/L,对照组（102.67±41.21）μmol/L。结论:血肌酐清除率降低是冠心病的危险因素。Abstract: Objective: To disclose the relation of the estimated glomerular filtration rate (eGFR) and coronary artery disease. Methods：We analyzed eGFR in the patients with coronary artery disease confirmed by coronary angiography and the control, and compared the proportion of patients with reduced renal function in the different groups. Results: A total 116 cases were included in each group. Among these patients, normal renal function, mildly and severe reduced renal function was documented in 82, 29 and 5 in coronary artery disease group, and in 98, 13 and 5 in the control group, respectively. In comparison to the control, more patients with reduced eGFR were found in coronary artery disease group (χ2 value 7.517,P=0.023), although no significant difference was observed between both groups（Pgt;0.05). Conclusion: Reduced eGFR, even if mildly, could be regarded as the risk factor of coronary artery disease.
ObjectiveTo evaluate the screening performance of commonly used renal function indicators for chronic kidney disease (CKD) in subjects of different ages, so as to explore the appropriate screening regimen for Chinese population.MethodsA total of 2 131 adult subjects in Sichuan Orthopaedic Hospital or Mianyang Central Hospital from May 2016 to October 2017 were selected. They were divided into three groups according to age: group A (18–39 years, n=278), group B (40–64 years, n=1 167), and group C (≥65 years, n=686). Serum levels of creatinine (SCr), urea, and cystatin C [CysC; to calculate estimated glomerular filtration rate (eGFR) based on this index], as well as urine levels of albumin, total protein and creatinine were measured, and urine albumin to creatinine ratio (ACR) and urine protein to creatinine ratio (PCR) were calculated respectively. CKD was diagnosed according to the Kidney Disease: Improving Global Outcomes (KDIGO) Guideline (2012 Edition). The receiver-operating characteristic (ROC) curve analysis was finally performed to investigate the diagnostic performance of each indicator for CKD.ResultsThe prevalences of CKD in group A, B, and C were 10.8% (30/278), 16.4% (191/1 167), and 45.8% (314/686), respectively, and the difference among these groups was statistically significant (χ2=233.525, P<0.001). In addition, the levels of the six renal function indicators between CKD and non-CKD subjects also had statistically significant differences in different age groups (P<0 05="" otherwise="" roc="" curve="" analysis="" revealed="" that="" the="" diagnostic="" values="" of="" these="" indicators="" were:="" acr="" or="" pcr=""> eGFR or CysC > serum urea or SCr (AllP<0 05="" except="" that="" egfr="" cysc="" serum="" urea="" and="" scr="" in="" group="" a="" assessed="" the="" similar="" diagnostic="" performance="" among="" the="" three="" indicators="" recommended="" by="" kdigo="" guideline="" the="" diagnostic="" performances="" of="" acr="" and="" pcr="" in="" different="" age="" groups="" were:="" group="" b="" 0="" 915="" 0="" 914=""> group A (0.885, 0.890) > group C (0.841, 0.846), while the diagnostic performance of eGFR was group C (0.807) > group B (0.728) > group A (0.696). The best boundary values of ACR and PCR were lower while the value of eGFR was higher than the corresponding KDIGO recommended medical decision levels.ConclusionsACR is the first choice for screening CKD when the renal function index creatinine is normal. Moreover, eGFR can further improve the diagnostic value, especially in subjects over 65 years old.
ObjectiveTo analyze the thyroid hormone levels in patients with acute type A aortic dissection (ATAAD) and assess its clinical significance.MethodsWe included 88 patients with ATAAD who underwent surgical treatment in Beijing Anzhen Hospital between January 2018 and August 2018. Meanwhile, we extracted 187 blood samples of healthy people from our laboratory (Beijing Lab for Cardiovascular Precision Medicine, Beijing, China) as control group. Examining preoperative thyroid hormone levels and perioperative serum creatine for patients and examining thyroid hormone levels for healthy people. Based on difference in thyroid hormone levels between patients and healthy people, we divide patients into abnormal thyroid hormone groups and control groups, analyzing the relationship between thyroid hormone levels and variance of postoperative serum creatinine.ResultsPatients with ATAAD have lower total triiodothyronine (TT3), thyrotropin (TSH), free triiodothyronine (FT3) and higher free thyroxine (FT4) levels than healthy people (respectively, P<0.001, P<0.001, P<0.001 and P<0.001). What’s more, patients with ATAAD who had low TT3 before operation had higher elevation of postoperative serum creatinine and rate of acute kidney injury(P=0.019).CONCLUSIONSPatients with ATAAD have different thyroid hormone levels than healthy people, preoperative TT3 is associated with elevation of postoperative serum creatinine and occurrence of acute kidney injury. Thyroid function measurement should be a routine preoperative examination in patients with ATAAD.
ObjectiveTo evaluate the value of blood urea nitrogen to creatinine ratio (UCR) in predicting the condition and prognosis of severe pneumonia patients.MethodsA total of 408 patients with severe pneumonia hospitalized in the intensive care unit (ICU) of Fangcun branch of Guangdong Provincial Hospital of traditional Chinese medicine from January 1, 2017 to August 1, 2020 were retrospectively collected. The patients were divided into a survival group (320 cases) and a death group (88 cases) according to the outcome of hospitalization. This study analyzed the relationship between UCR level and general information, condition, and treatment needs of severe pneumonia patients; and compared UCR, the value of neutrophil to lymphocyte ratio, the levels of hematocrit, C-reactive protein, procalcitonin and D-dimer, and the scores of Acute Physiology and Chronic Health EvaluationⅡ and Pneumonia Severity Index between the survival group and the death group. Receiver operating characteristic (ROC) curve was used to analyze the prognostic value of the above indicators. Logistic regression was used to analyze the risk factors of death of severe pneumonia.ResultsThe age of the patients died of severe pneumonia was higher than that of the survival patients (P<0.05); The mortality rate of severe hospital acquired pneumonia was higher than that of severe community acquired pneumonia (P<0.05); The level of UCR was higher in the patients over 70 years old (P<0.05); UCR level of the severe pneumonia patients with acute exacerbation of chronic obstructive pulmonary disease or multiple organ dysfunction syndrome during hospitalization was higher (P<0.05); The UCR level was higher in the patients with severe pneumonia whose ICU stay was more than 10 days (P<0.05); The UCR level of the severe pneumonia patients with mechanical ventilation longer than 180 hours was higher (P<0.05); UCR level of the severe pneumonia patients who died during hospitalization was higher than that of the survival group (P<0.05); The area under ROC curve of UCR for predicting death in the patients with severe pneumonia was 0.648 (95%CI 0.576 - 0.719), the cut-off value was 108.74, the sensitivity was 47.7%, and the specificity was 77.8% (P<0.05). PSI > level 3 (OR=4.297, 95%CI 2.777 - 6.651) and UCR > 108.74 (OR=0.545, 95%CI 0.332 - 0.896) were independent risk factors for death in the patients with severe pneumonia (P<0.05).ConclusionUCR has certain value in evaluating the condition and prognosis of severe pneumonia patients.
Objective To investigate the risk factors for early in-hospital death in patients with acute Stanford type A aortic dissection and emergency surgical treatment. MethodsWe retrospectively analyzed the clinical data of 189 patients with acute Stanford type A aortic dissection who underwent surgery in the First Affiliated Hospital of Xinjiang Medical University between January 2017 and January 2020. There were 160 males and 29 females with an average age of 46.35±9.17 years. All patients underwent surgical treatment within 24 hours. The patients were divided into a survival group (n=160) and a death group (n=29) according to their outcome (survival or death) during hospitalization in our hospital. Perioperative clinical data were analyzed and compared between the two groups. Results The overall in-hospital mortality was 15.34% (29/189). There was a statistical difference between the two groups in white blood cell count, blood glucose, aspartate aminotransferase (AST), bilirubin, creatinine, operative method, operation time, aortic occlusion time, or cardiopulmonary bypass time (P<0.05). Multivariate regression identified white blood cell count [OR=1.142, 95%CI (1.008, 1.293)], bilirubin [OR=0.906, 95%CI (0.833, 0.985)], creatinine [OR=1.009, 95%CI (1.000, 1.017)], cardiopulmonary bypass time [OR=1.013, 95%CI (1.003, 1.024)] as postoperative risk factors for early in-hospital death in the patients undergoing acute Stanford type A aortic dissection surgery (P<0.05). Conclusion Our study demonstrated that white blood cell, bilirubin, creatinine and cardiopulmonary bypass time are independent risk factors for in-hospital death after acute Stanford type A aortic dissection surgery.
ObjectiveTo observe and evaluate the predictive value of serum cystatin C (Cys-C) on the risk of sight-threatening diabetic retinopathy (STDR). MethodsA non-randomized controlled cross-sectional clinical study. Ninety-two patients with type 2 diabetes mellitus (T2DM) who were admitted to Department of Ophthalmology of Beijing Tsinghua Changgung Hospital from January 2022 to October 2022 were included in the study. Among them, 50 were male, 42 cases were female, with the mean age of (58.24±12.49) years. The mean duration of T2DM was (13.18±8.35) years, of which 38 cases had a duration of ≥10 years. Twenty-nine cases complicated with hypertension, of which 16 cases had a duration of ≥10 years. Seventeen cases complicated with chronic kidney disease stage 2 and 23 cases were treated with lipid-lowering drugs. Hemoglobin Alc, serum Cys-C, serum lipids and renal function were tested, and urinary microalbumin/creatinine ratio (ACR) was calculated. According to the 2003 American Academy of Ophthalmology "Clinical Guidelines for Diabetic Retinopathy (DR)" and international clinical DR severity grading standards, the patients were divided into STDR and non-STDR groups, with 44 and 48 cases in each group, respectively. STDR was defined as severe non-proliferative DR, proliferative DR, and macular edema. Logistic regression was used to analyze the independent risk factors of STDR in T2DM patients. Receiver operating characteristic curve (ROC curve) was used to calculate and analyze the area under ROC curve (AUC) and the predictive value of serum Cys-C and ACR in predicting STDR in T2DM patients. ResultsSerum Cys-C levels in STDR and non-STDR groups were 1.10 (0.94, 1.28) and 0.91 (0.83, 1.02) mg/L, respectively, with ACR of 4.29 (1.05, 21.89) and 1.39 (0.77, 3.80) mg/mmol, respectively. Compared with non-STDR group, serum Cys-C and ACR in STDR group were higher, and the difference was statistically significant (Z=－3.984, －3.280; P＜0.05). Multivariate logistic regression analysis showed that serum Cys-C was an independent risk factor for STDR (odds ratio=1.337, 95% confidence interval 1.145-2.090, P=0.033), and the risk of STDR increased by 33.7% for every 0.1 mg/L increase in serum Cys-C. ROC analysis results showed that serum Cys-C＞1.065 mg/L combined with ACR＞5.84 mg/mmol predicted the AUC of STDR in T2DM patients was 0.661, with the specificity of 95.8%. ConclusionsThe high serum Cys-C level is an independent risk factor for STDR in T2DM patients. Serum Cys-C has high predictive value for the occurrence of STDR.