脑梗死患者血清细胞间黏附分子-1和凝血因子Ⅶ的水平研究及临床意义

目的探讨脑梗死患者血清细胞间黏附分子-1(sICAM-1)与血浆凝血因子Ⅶ(coagu lation factorⅦ,FⅦ)的变化及其临床意义。方法本院收治急性脑梗死患者34例,测定其血清sICAM-1水平及血浆活化的FⅦ(FⅦa)、FⅦ抗原(FⅦAg)、FⅦ活性(FⅦc)水平;另取同期脑动脉供血不足患者28例、健康体检者30名进行对照。结果脑梗死患者的血清sICAM-1水平显著高于脑供血不足患者和对照组,差异有统计学意义(P<0.01);小梗死灶的患者血清sICAM-1水平显著低于大、中梗死灶患者,差异有统计学意义(P<0.05)。脑梗死患者的血浆FⅦc、FⅦAg及FⅦa水平显著高于对照组,差异有统计学意义(P<0.01)。结论血清sICAM-1、FⅦc、FⅦAg、FⅦa水平升高与脑梗死的发生、发展及梗死程度有关,可作为脑梗死的辅助诊断指标。     

肝癌患者外周血清生存素检测的临床意义

目的建立血清生存素的测定方法,初步评价其在肝癌诊断中的价值.方法建立人血清生存素的双抗体夹心酶联免疫吸附试验(ELISA),对方法的精密度和线性范围等进行评价.用此方法检测80例肝癌患者和80名健康成人血清生存素蛋白,分析其与血清甲胎蛋白(AFP)之间的关系.结果以生存素单克隆抗体和抗血清建立了血清生存素的双抗体夹心ELISA测定方法.方法的批内变异系数(CV)为10.33%,批间CV为11.71%;稀释试验显示方法的线性范围为生存素蛋白原液～132稀释液;对照组吸光度(A)值0.002～0.115(0.047±0.032);以-x+3s作为方法的cut off值(0.143).80例肝癌患者血清生存素蛋白测定A值0.031～1.415,其中A值＞cut off值的有50例(62.5%).肝癌组血清AFP测定有58例阳性,阳性率为72.5%.血清生存素和AFP联合检测对肝癌的检出率为90%,二项结果不一致的有36例(45.0%).结论外周血生存素蛋白含量在肝癌患者中显著升高,提示该基因参与了肝癌的发生过程;生存素测定结果与AFP无关,提示其可能成为肝癌的辅助诊断指标.     

脓毒血症并发急性肾损伤早期诊断标志物的研究

Objective To investigate the accuracy of NGAL in prediction of acute kidney injury (AKI) complicated by sepsis. Methods Blood and urine samples were collected at different time points in 74 sepsis patients, and 17 AKI patients were got from them.Cysteine Cys C levels were detected with Latex enhanced turbidimetric immunoassay (LETIA). Urine NGAL and Scr levels were detected with solid-phase sandwich enzyme-linked immunosorbent assay and creatinine enzymatic assay respectively. At the same time, 57 non-AKI patients were set as controls. Dynamic changes of urine NGAL and Scr were observed in sepsis patients in test and control group. ROC curve was used to evaluate the performance of AKI diagnosis by urinary NGAL.Results The Scr base line was (59. 38 ±16. 72) μmol/L.The median time of diagnose of AKI was 24 (12, 48) h past-sepsis diagnosis, while the Scr was(100. 35± 28. 26) μmol/L. Of the group, 17 cases of sepsis were diagnosed with AKI, accounting for 23% (17/74) prevalence. In sepsis group, base line value[(0. 61 ± 0. 15) mg/L] of serum Cys C was not upregulated at 2, 4 and 6 h, which was (0. 63 ± 0. 14) mg/L, (0. 68 ± 0. 16) mg/L and (0.65±0. 14) mg/L respectively. As to 8 h [(0. 85 ± 0. 22) mg/L], a slight upregulation was found with no significant difference (t = 1.63, P ＞ 0. 05).A trend of gradual increase of serum Cys C levels was found in sepsis AKI group at 12, 18, 24, 36, 48 and 72 h. A significant difference was found compared with base line (t = 2. 81, 2.98, 3.05, 3.11, 3. 38,3. 17,P ＜0.01). NGAL level[(96.21 ±45.32) μg/L] was significantly higher than base line value [(4. 98 ± 1.65) μg/L]. Subsequently, in each time point from the 2 h to 48 h, a trend of gradual increase in urinary NGAL levels was showed. The differences were significant compared with the baseline values (t =2. 74,2. 83,2. 91,3.04,3.15,3.22,3. 31,3.45,3.57 ,P ＜0. 01). Urinary NGAL levels of sepsis AKI group were significantly higher than those in non-AKI group at different time points with significant difference (t =2. 69,2. 73,2. 84,2. 96,3.02,3. 13,3.29,3.43,3.54,3.22,P ＜0. 01). ROC curve was selected to analyze diagnostic performance of urinary NGAL levels in AKI patients 2 h post-sepsis. Area under ROC curve was obtained as 0. 935, 95% confidence interval was 0. 683-0. 971. When cut-off value of urinary NGAL for patients 2 h post-sepsis was 50 μg/L, the sensitivity, specificity and accuracy were 94. 4%, 87. 5% and 96. 8% in AKI diagnosis respectively. Conclusions The occurrence of AKi can be accurately predicted by urinary NGAL levels 2 h post-sepsis , and its AKI diagnosis time is earlier than that of Scr. Urine NGAL can be used as early marker of AKI complicated by sepsis.     

PETIA与PENIA测定IgE的分析灵敏度比较

血清免疫球蛋白E（immunoglobulinE,IgE）主要是用于过敏性疾病的诊断。目前临床常用的检测方法主要有颗粒增强免疫透射比浊法（parti—cleenhancedimmunoturbidimetricassay,PETIA）和免疫散射比浊法（particleenhancedimmunonephe—lometryassay,PENIA）。这2种方法是目前公认的最为理想的方法。过去人们大多认为用散射比浊法检测特定蛋白的分析灵敏度较高,而传统免疫透射比浊法的分析灵敏度较低。因此,我们分析了这2种方法检测IgE的灵敏度。     

脓毒血症并发急性肾损伤早期诊断标志物的研究

目的 探讨NGAL预测脓毒血症后AKI的准确性.方法 收集74例脓毒血症患者诊断后不同时间点的血、尿标本,对其中17例AKI患者,采用固相夹心酶联免疫吸附法检测尿NGAL水平,胶乳颗粒增强的免疫透射浊度法测定Cys C的值,肌氨酸氧化酶法测定Set水平.同期的57例非AKI患者作为研究的对照.观察两组患者毒血症诊断后尿NGAL和Scr的动态变化.运用ROC曲线评价尿NGAL诊断AKI的准确性.结果 Scr基线值为(59.38±16.72)μmoL/L,诊断AKI的中位时间为脓毒血症确诊后的24(12,48)h,Scr为(100.35±28.26)μmol/L.本组脓毒血症后发生AKI17例,发生率为23%(17/74).脓毒血症AKI组患者2、4、6 h血清Cys C水平分别为(0.63±0.14)mg/L、(0.68±0.16)mg/L、(0.65±0.14)mg/L,与基线值(0.61±0.15)mg/L比较未见上升;8 h时,其血清Cys C值小幅升高为(0.85±0.22)mgs/L,但差异无统计学意义(t=1.63,P＞0.05);12、18、24、36、48及72 h等各时间点的血清Cys C值呈逐渐升高的趋势,与基线值比较差异均有统计学意义(t=2.81、2.98、3.05、3.11、3.38、3.17,P＜0.01).AKI组脓毒血症后2 h尿NGAL为(96.21 ±45.32)μg/L,显著高于基线值的(4.98±1.65)μg/L.随后,在2 h至48 h等各时间点,患者尿NGAL水平呈逐渐升高的趋势,与基线值比较差异均有统计学意义(t=2.74、2.83、2.91、3.04、3.15、3.22、3.31、3.45、3.57,P＜0.01).AKI组脓毒血症后各时间点尿NGAL水平均显著高于同期的非AKI组,差异有统计学意义(t=2.69、2.73、2.84、2.96、3.02、3.13、3.29、3.43、3.54、3.22,P＜0.01).用ROC曲线分析脓毒血症后2 h尿NGAL水平在AKI诊断中的准确性,得到ROC曲线下面积为0.935,95%的可信区间为0.683～0.971.当脓毒血症后2 h尿NGAL的cut-off值为50μg/L时,其在AKI诊断中的敏感度和特异度及准确性分别为94.4%、87.5%和96.8%.结论 脓毒血症后2 h尿NGAL水平可以准确地预测AKI的发生,其诊断AKI的时间早于Cys C和Scr.尿NGAL可作为脓毒血症后AKI的早期诊断标志物.     

脑梗死患者血清细胞间黏附分子-1和凝血因子Ⅶ的水平研究及临床意义

目的探讨脑梗死患者血清细胞间黏附分子-1（sICAM-1）与血浆凝血因子Ⅶ（coagu lation factorⅦ,FⅦ）的变化及其临床意义。方法本院收治急性脑梗死患者34例,测定其血清sICAM-1水平及血浆活化的FⅦ（FⅦa）、FⅦ抗原（FⅦAg）、FⅦ活性（FⅦc）水平;另取同期脑动脉供血不足患者28例、健康体检者30名进行对照。结果脑梗死患者的血清sICAM-1水平显著高于脑供血不足患者和对照组,差异有统计学意义（P〈0.01）;小梗死灶的患者血清sICAM-1水平显著低于大、中梗死灶患者,差异有统计学意义（P〈0.05）。脑梗死患者的血浆FⅦc、FⅦAg及FⅦa水平显著高于对照组,差异有统计学意义（P〈0.01）。结论血清sICAM-1、FⅦc、FⅦAg、FⅦa水平升高与脑梗死的发生、发展及梗死程度有关,可作为脑梗死的辅助诊断指标。     

肝癌患者外周血清生存素检测的临床意义

目的建立血清生存素的测定方法,初步评价其在肝癌诊断中的价值。方法建立人血清生存素的双抗体夹心酶联免疫吸附试验(ELISA),对方法的精密度和线性范围等进行评价。用此方法检测80例肝癌患者和80名健康成人血清生存素蛋白,分析其与血清甲胎蛋白(AFP)之间的关系。结果以生存素单克隆抗体和抗血清建立了血清生存素的双抗体夹心ELISA测定方法。方法的批内变异系数(CV)为10.33%,批间CV为11.71%;稀释试验显示方法的线性范围为生存素蛋白原液～1∶32稀释液;对照组吸光度(A)值0.002～0.115(0.047±0.032);以x+3s作为方法的cutoff值(0.143)。80例肝癌患者血清生存素蛋白测定A值0.031～1.415,其中A值>cutoff值的有50例(62.5%)。肝癌组血清AFP测定有58例阳性,阳性率为72.5%。血清生存素和AFP联合检测对肝癌的检出率为90%,二项结果不一致的有36例(45.0%)。结论外周血生存素蛋白含量在肝癌患者中显著升高,提示该基因参与了肝癌的发生过程;生存素测定结果与AFP无关,提示其可能成为肝癌的辅助诊断指标。     

脓毒血症并发急性肾损伤早期诊断标志物的研究

Objective To investigate the accuracy of NGAL in prediction of acute kidney injury (AKI) complicated by sepsis. Methods Blood and urine samples were collected at different time points in 74 sepsis patients, and 17 AKI patients were got from them.Cysteine Cys C levels were detected with Latex enhanced turbidimetric immunoassay (LETIA). Urine NGAL and Scr levels were detected with solid-phase sandwich enzyme-linked immunosorbent assay and creatinine enzymatic assay respectively. At the same time, 57 non-AKI patients were set as controls. Dynamic changes of urine NGAL and Scr were observed in sepsis patients in test and control group. ROC curve was used to evaluate the performance of AKI diagnosis by urinary NGAL.Results The Scr base line was (59. 38 ±16. 72) μmol/L.The median time of diagnose of AKI was 24 (12, 48) h past-sepsis diagnosis, while the Scr was(100. 35± 28. 26) μmol/L. Of the group, 17 cases of sepsis were diagnosed with AKI, accounting for 23% (17/74) prevalence. In sepsis group, base line value[(0. 61 ± 0. 15) mg/L] of serum Cys C was not upregulated at 2, 4 and 6 h, which was (0. 63 ± 0. 14) mg/L, (0. 68 ± 0. 16) mg/L and (0.65±0. 14) mg/L respectively. As to 8 h [(0. 85 ± 0. 22) mg/L], a slight upregulation was found with no significant difference (t = 1.63, P ＞ 0. 05).A trend of gradual increase of serum Cys C levels was found in sepsis AKI group at 12, 18, 24, 36, 48 and 72 h. A significant difference was found compared with base line (t = 2. 81, 2.98, 3.05, 3.11, 3. 38,3. 17,P ＜0.01). NGAL level[(96.21 ±45.32) μg/L] was significantly higher than base line value [(4. 98 ± 1.65) μg/L]. Subsequently, in each time point from the 2 h to 48 h, a trend of gradual increase in urinary NGAL levels was showed. The differences were significant compared with the baseline values (t =2. 74,2. 83,2. 91,3.04,3.15,3.22,3. 31,3.45,3.57 ,P ＜0. 01). Urinary NGAL levels of sepsis AKI group were significantly higher than those in non-AKI group at different time points with significant difference (t =2. 69,2. 73,2. 84,2. 96,3.02,3. 13,3.29,3.43,3.54,3.22,P ＜0. 01). ROC curve was selected to analyze diagnostic performance of urinary NGAL levels in AKI patients 2 h post-sepsis. Area under ROC curve was obtained as 0. 935, 95% confidence interval was 0. 683-0. 971. When cut-off value of urinary NGAL for patients 2 h post-sepsis was 50 μg/L, the sensitivity, specificity and accuracy were 94. 4%, 87. 5% and 96. 8% in AKI diagnosis respectively. Conclusions The occurrence of AKi can be accurately predicted by urinary NGAL levels 2 h post-sepsis , and its AKI diagnosis time is earlier than that of Scr. Urine NGAL can be used as early marker of AKI complicated by sepsis.     

脑卒中患者血同型半胱氨酸、叶酸及维生素B12水平的分析

目的探讨血同型半胱氨酸（Hcy）水平与脑卒中发生的相关性,以及脑卒中患者血清叶酸、维生素B12（（V itB12）水平的变化。方法分别测定60例脑卒中患者（47例脑梗死、13例脑出血）及60名健康对照者的血Hcy水平并同时检测叶酸、V itB12以及血脂、血糖等。结果脑卒中组血Hcy水平显著高于对照组,而2组之间血糖及血脂水平无差异。脑梗死和脑出血患者血Hcy水平无差异。血清叶酸及V itB12水平与血Hcy呈负相关（r=-0.33,P〈0.01;r=-0.27,P〈0.05）。结论高血Hcy是脑卒中的独立危险因素,低水平的血清叶酸、V itB12可能是导致高Hcy血症的原因之一。