慢性乙型肝炎患者治疗前后血清sFas和sFasL的变化及其临床意义

目的探讨各类慢性乙型肝炎(CHB)治疗前后血清可溶性Fas(sFas)和sFas配体(sFasL)的水平变化及其意义.方法用酶联免疫吸附试验(ELISA)检测118例各种类型CHB患者经前列腺素E1等药物治疗前后血清sFas、sFasL的水平,并与30名健康献血者比较.结果 118例各种类型CHB患者的sFas明显高于正常对照组(P＜0.01、0.01、0.01、0.05),且重型肝炎(FH)＞CHB重度＞CHB中度＞CHB轻度(P均＜0.01),sFas的升高与总胆红素(TBil)呈显著性正相关(r=0.605,P＜0.01);FH和CHB重度的sFasL明显高于正常对照组(P均＜0.01).恢复期各组sFas和sFasL均比治疗前明显降低(P均＜0.01).结论血清sFas、sFasL的水平与CHB病情密切相关,监测二者变化有助于判断病情和观察疗效.     

急性心肌梗死患者经皮冠状动脉介入治疗前后血清可溶性Fas、可溶性Fas配体和内皮素-1检测的临床意义

目的 探讨急性心肌梗死患者经皮冠状动脉介入(PCI)治疗前后血清可溶性Fas(sFas)、可溶性Fas配体(sFasL)和内皮素-1(ET-1)水平的变化及意义.方法 应用放射免疫法和酶联免疫法对40例急性心肌梗死患者(急性心肌梗死组)进行了PCI治疗前后血清sFas、sFasL和ET-1的检测,并与40名正常健康人(正常对照组)作比较.结果 在PCI治疗前,急性心肌梗死组血清sFas、sFasL和ET-1水平均高于正常对照组(P均＜0.01),治疗后2周,与正常对照组比较差异均无统计学意义(P均＞0.05),血浆sFas水平与sFasL水平呈正相关(r=0.5398,P＜0.01);血浆sFas水平与ET-1水平呈正相关(r=0.5282,P＜0.01);血浆sFasL水平与ET-1水平也呈正相关(r=0.5484,P＜0.01).结论 检测急性心肌梗死患者血清sFas、sFasL和ET-1水平的变化对了解病情、观察预后均有重要的临床价值.     

急性心肌梗死患者经皮冠状动脉介入治疗前后血清可溶性Fas、可溶性Fas配体和内皮素-1检测的临床意义

目的 探讨急性心肌梗死患者经皮冠状动脉介入(PCI)治疗前后血清可溶性Fas(sFas)、可溶性Fas配体(sFasL)和内皮素-1(ET-1)水平的变化及意义.方法 应用放射免疫法和酶联免疫法对40例急性心肌梗死患者(急性心肌梗死组)进行了PCI治疗前后血清sFas、sFasL和ET-1的检测,并与40名正常健康人(正常对照组)作比较.结果 在PCI治疗前,急性心肌梗死组血清sFas、sFasL和ET-1水平均高于正常对照组(P均＜0.01),治疗后2周,与正常对照组比较差异均无统计学意义(P均＞0.05),血浆sFas水平与sFasL水平呈正相关(r=0.5398,P＜0.01);血浆sFas水平与ET-1水平呈正相关(r=0.5282,P＜0.01);血浆sFasL水平与ET-1水平也呈正相关(r=0.5484,P＜0.01).结论 检测急性心肌梗死患者血清sFas、sFasL和ET-1水平的变化对了解病情、观察预后均有重要的临床价值.     

阿托伐他汀对急性脑出血患者血清可溶性Fas和可溶性Fas配体的影响观察

目的 观察阿托伐他汀对急性脑出血患者血清可溶性Fas（sFas）和可溶性Fas配体（sFasL）蛋白的影响,探讨阿托伐他汀对急性脑出血脑保护作用.方法 30例脑出血患者随机分成试验组及对照组.试验组患者在待病情稳定后,加用阿托伐他汀（立普妥）20 mg鼻饲或口服,每日1次治疗.所有患者起病第1、2、3、4、5、6、7天分别抽取空腹外周静脉血,酶联免疫吸附（ELISA）法测定血清sFas和sFasL蛋白水平.结果 对照组血清sFas浓度入院后逐渐增高,于第5天达高峰后逐渐回落,仍明显高于试验组血清sFas浓度（P＜0.01）;对照组血清sFasL浓度入院后逐渐增高,于第4天达高峰后逐渐回落,和试验组血清sFasL相比,血浆浓度相差显著（P＜0.01）.结论 阿托伐他汀能够降低急性脑出血患者血清sFas和sFasL蛋白水平.     

肾移植受者血清sFas和sFasL变化及在早期急性排异反应预测中的应用

背景:细胞凋亡在移植免疫和移植物功能丧失发生过程中起十分重要的作用,其中Fas/FasL系统被认为是细胞凋亡参与肾移植的急性排异反应过程的主要途径之一。目的:分析肾移植受者术后血清sFas和sFasL水平变化及其在预测早期急性排异反应中的应用价值。方法:肾移植受者80例分为肾功能稳定组(49例)、急性排斥反应组(23例)和环孢素A中毒组(8例)。另选择性别、年龄与肾移植受者相匹配的健康体检者50例为对照组。肾移植受者术后均常规使用环孢素A+硫唑嘌呤+泼尼松三联免疫抑制治疗。发生急性排斥反应时给予每日甲基强的松龙6～8mg/kg冲击治疗,3d为1个疗程。采用ELISA法检测患者手术前后的血清sFas和sFasL水平。结果与结论:肾移植组患者手术前的血清sFas和sFasL水平均明显高于对照组(P<0.05)。急性排斥反应组血清sFas、sFasL水平高于相同时间段肾功能稳定组(P<0.05)。环孢素A中毒的肾移植患者术后各时间点血清sFas、sFasL水平变化与肾功能稳定组基本相同,差异无显著性意义。提示动态监测血清sFas、sFasL水平可能对早期诊断及鉴别诊断肾移植急性排斥反应具有重要参考价值。     

同种异体肾移植排斥患者血清sFas和sFasL水平的临床观察

目的观察肾同种移植急性排斥患者血清可溶性Fas(sFas)和sFas配体(sFasL)的水平及临床意义.方法采用酶联免疫吸附试验(ELISA)分别对健康对照组及实验组透析前后sFas、sFasL进行检测.结果对照组sFas为(256.8±72.0)ng/L,sFasL为(227.9±65.9)ng/L;实验组透析前后sFas分别为(1 225.7±467.6)ng/L、(1 225.8±464.0)ng/L,sFasL分别为(227.9±147.2)ng/L、(226.9±109.6)ng/L.实验组与对照组的sFas比较差异有显著性(P＜0.01),而sFasL比较差异无显著性(P＞0.05).结论 sFas在排异的病理反应过程中参与了细胞凋亡的抑制,透析并不能改善Fas-FasL介导的细胞凋亡.     

同种异体肾移植排斥患者血清sFas和sFasL水平的临床观察

目的　观察肾同种移植急性排斥患者血清可溶性Fas(sFas)和sFas配体(sFasL)的水平及临床意义。 方法　采用酶联免疫吸附试验(ELISA)分别对健康对照组及实验组透析前后sFas、sFasL进行检测。结果　对 照组sFas为(256.8±72.0)ng/L,sFasL为(227.9±65.9)ng/L;实验组透析前后sFas分别为(1225.7±467.6) ng/L、(1225.8±464.0)ng/L,sFasL分别为(227.9±147.2)ng/L、(226.9±109.6)ng/L。实验组与对照组的 sFas比较差异有显著性(P<0.01),而sFasL比较差异无显著性(P>0.05)。结论　sFas在排异的病理反应过 程中参与了细胞凋亡的抑制,透析并不能改善Fas FasL介导的细胞凋亡。     

新生儿缺血缺氧性脑病发病机制新进展及护理体会

目的:探讨新生儿缺血缺氧性脑病(HIE)患儿血清可溶性Fas(sFas)和可溶性Fas配体(sFasL)的动态变化及其与颅脑CT改变程度的相关性.方法:将48例HIE新生儿按临床分度及颅脑CT分度分为轻、中、重度3组,应用双抗体夹心酶联免疫吸附法(ELISA)测定其血清sFas、sFasL含量.结果:HIE患儿急性期、恢复早期血清sFas、sFasL水平均明显高于对照组(P＜0 01),二者急性期均显著高于恢复早期(P＜0.01);轻、中、重度HIE患儿急性期血清sFas与sFasL水平均明显高于对照组(P＜0.05).结论:HIE患儿血清sFas、sFasL水平增高与其病程和病情密切相关,血清sFasL和sFas水平可作为判断HIE病情的实验室指标之一.     

恶性肿瘤化学治疗与血清可溶性Fas、FasL水平变化的研究

目的 探讨恶性肿瘤患者化疗前后血清中可溶性Fas、FasL水平变化及其临床意义。方法 采用双抗体夹心酶联免疫吸附试验（ELISA）法对33例恶性肿瘤患者化疗前后的sFas、sFasL水平进行测定,20例健康体检者作正常对照。结果 恶性肿瘤患者的sFas、sFasL水平显著高于正常对照组（P〈0．01）,且仅sFas与肿瘤临床分期相关（P〈0．01）。化学治疗后有效者sFas和sFasL水平均显著降低（P〈0．01）。结论 sFas和sFasL的水平变化对探讨肿瘤的发生发展、病情判断及指导化疗有一定价值。     

斑蝥酸钠维生素B6联合经皮肝动脉化疗栓塞对原发性肝癌患者血清sFasL/sFas的影响

目的对比分析原发性肝癌(primary liver carcinoma,PLC)、慢性乙型肝炎(chronic hepatitis B,CHB)患者及健康体检者血清可溶性Fas配体(soluble Fas ligend,sFasL)及sFas水平,并动态观察联合应用斑蝥酸钠维生素B6及经皮肝动脉化疗栓塞(transcatheter hepatic arterial chemoembolization,TACE)治疗前后PLC患者血清sFasL、sFas水平变化,探讨PLC早期诊断和预后判断的可靠指标。方法选择PLC患者40例(初发26例,复发14例),采用斑蝥酸钠维生素B6注射液联合TACE治疗,酶联免疫吸附试验检测治疗前、治疗后1、3、6个月血清sFasL/sFas水平,同步检测血清白蛋白(albumin,ALB)、丙氨酸转氨酶(alanine aminotransferase,ALT)、总胆红素(total bilirubin,TBIL)水平。另选CHB患者及健康体检者各20例作为对照组。结果 PLC患者血清sFasL、sFas水平显著高于CHB组及健康对照组,尤以复发PLC增高为著。PLC初发、PLC复发、CHB和健康对照组血清sFasL水平依次为(86.21±28.47)μg/L、(317.56±139.54)μg/L、(43.62±9.96)μg/L和(26.61±7.93)μg/L;sFas依次为(51.15±22.97)μg/L、(107.13±27.19)μg/L、(16.81±6.34)μg/L、(21.57±7.95)μg/L,PLC复发组血清sFasL和sFas水平显著高于其余各组(P<0.01);PLC初发组显著高于CHB和健康对照组(P<0.01或<0.05)。PLC治疗后1、3、6个月血清sFasL为(150.32±27.95)μg/L、(82.52±15.07)μg/L、(34.66±5.26)μg/L;sFas为(102.09±27.92)μg/L、(30.59±6.79)μg/L、(21.20±3.19)μg/L,治疗后1个月sFasL、sFas水平较治疗前显著升高(P<0.01);治疗后3个月sFas及治疗后6个月sFasL、sFas水平均较治疗前显著降低(P<0.05及P<0.01)。治疗前后血清ALB、ALT及TBIL水平无明显变化。结论血清sFasL、sFas水平为PLC发病及进展的重要标志;斑蝥酸钠维生素B6联合TACE治疗PLC可通过调节凋亡基因sFasL、sFas的表达促进肿瘤细胞凋亡,抑制肿瘤生长。     

慢性乙型重症肝炎及肝癌与血清可溶性Fas可溶性Fas配体 …

目的 探讨血清可溶性Ｆａｓ／可溶性Ｆａｓ配体水平与慢性乙型重症肝炎以及乙肝病毒相关性肝细胞癌变之间的关系。方法 用酶联免疫吸附双抗体夹心法检测２１例无症状乙肝病毒携带者,２０例慢性乙型重症肝炎及２２例乙肝病毒相关性肝细胞癌患者血清ｓＦａｓ、ｓＦａｓＬ水平。结果 与无症状乙肝病毒携带者比较,慢性乙肝重症肝炎患者血清ｓＦａｓ、ｓＦａｓＬ水平均增高,其差异有显著意义;乙肝病毒相关性肝细胞癌患者ｓＦａｓ水     

可溶性Fas及其配体在小儿病毒性心肌炎中临床意义研究

目的　探讨可溶性Fas及其配体在小儿病毒性心肌炎中的表达以及与细胞凋亡和免疫反应的关系 ,旨在为病毒性心肌炎的诊断和治疗提供新的线索和依据。方法　采用ELISA法测定了 4 4例病毒性心肌炎患儿和 2 0例健康儿童血清中sFas和sFasL的表达水平 ,并进行前瞻性对比研究。结果　病毒性心肌炎患儿血清sFas和sFasL表达水平较健康儿童明显增高 (P <0 .0 1)。病毒性心肌炎患儿血清sFas与sFasL表达水平呈正相关性 (r=0 .6 5 0 9,P <0 .0 1)。儿童血清sFas和sFasL表达水平无性别差异 (P >0 .0 5 )。结论　①血清sFas及sFasL表达增高与病毒性心肌炎疾病过程有关。②sFas表达增高可进一步证实病毒性心肌炎发病与免疫因素有关。③血清sFas表达增高可望作为T淋巴细胞激活的标志以及病毒性心肌炎诊断和治疗的重要依据。     

Serum soluble Fas (CD95) and Fas ligand profiles in chronic kidney failure

Apoptosis, or programmed cell death, is an active form of cell death that is initiated by a number of stimuli and is intricately regulated. Apoptosis in both excessive and reduced amounts has pathophysiologic implications. Accelerated programmed cell death has been observed in leukocytes among patients with chronic renal failure (CRF). This has been ascribed in part to the retention of uremic toxins. The Fas/Fas ligand (FasL) system is a key regulatory apoptotic pathway. Membrane-bound Fas is a cell-surface receptor that transduces apoptosis after interaction with membrane-bound or soluble FasL (sFasL). By contrast, soluble Fas (sFas) binds sFasL and inhibits its activity. In an attempt to examine the balance between these soluble factors in uremia, we measured soluble sFas and sFasL levels in the serum of healthy control subjects and patients with various degrees of CRF and examined the distribution of the various molecular mass fractions of these proteins in uremic serum. In brief, serum was obtained from 15 healthy volunteers, 17 patients with CRF, 11 patients undergoing maintenance hemodialysis (HD), and 7 patients undergoing peritoneal dialysis (PD). Serum sFas and sFasL were measured by enzyme-linked immunosorbent assay, and their molecular distribution was determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis followed by immunoblot. Compared with results in healthy control subjects, sFas levels were significantly higher in patients with CRF and in patients undergoing dialysis. There was a significant inverse correlation between sFas levels and creatinine clearance. Serum sFasL levels were not different among the four groups. However, the sFas-to-sFasL ratio was significantly lower in healthy control subjects as compared with patients with CRF and patients undergoing dialysis. Immunoblots and densitometric analyses of sFas and sFasL depicted a known 48-kd sFas, a known 27-kd sFasL, and a 60-kd sFas-sFasL protein aggregate signal. In conclusion, serum sFas levels are increased in patients with various degrees of CRF and may bind circulating sFasL, thereby minimizing mediation of cellular apoptosis.     

多器官功能障碍综合征患者血清sFas和sFasL浓度的变化

目的探讨多器官功能障碍综合征（multiple organ dysfunction syndrome，MODS）患者血清sFas和sFasL浓度在MODS诊断以及病情严重程度和预后判断中的临床意义以及与血清肿瘤坏死因子-α（TNF-α）水平的相关性。方法采用酶联免疫吸附法（ELISA）测定36例MODS患者血清sFas、sFasL和TNF-α浓度，以急性生理学与慢性健康状况评分系统Ⅲ（APACHEⅢ）评分和改良MODS评分评估病情严重程度，比较MODS组与对照组[包括非全身炎症反应综合征（SIRS）对照组和健康对照组]以及MODS组内死亡和存活患者之间血清sFas、sFasL浓度的差异，分析患者血清sFas、sFasL和TNF-α浓度与病情严重程度及血清sFas和sFasL与TNF-α浓度的相关性。结果MODS患者血清sFas、sFasL浓度均明显高于非SIRS对照组和健康对照组（P〈0．05或P〈0．01），且与病情严重度评分均呈正相关（P均〈0．01）。MODS患者中死亡组较存活组血清sFas、sFasL浓度明显升高（P均〈0．05）。MODS患者血清TNF-α浓度较非SIRS对照组和健康对照组明显增高，并与MODS组血清sFas、sFasL浓度呈高度正相关（P均〈0．01）。MODS患者血清sFas、sFasL浓度随器官衰竭个数增加而升高。结论血清sFas、sFasL可用于临床MODS辅助诊断和协助判断病情严重程度及预后。TNF-α可能促进了MODS中Fas／FasL系统表达上调。     

慢性肾衰竭患者血清sFas、sFasL水平变化及其与颈总动脉病变的相关性研究

目的探讨尿毒症心血管疾病（CVD）患者血清可溶性Fas、FasL（sFas、sFasL）水平与相关因子和颈总动脉血管内膜-中层厚度（IMT）的相关性。方法选择第二军医大学长征医院肾内科尿毒症血液透析（HD）伴CVD患者组103例，慢性肾病（CKD）[15〈GFR〈50ml／（min·1．73m^2）]伴CVD未透析患者组30例，正常对照组30例入选。采用酶联免疫双抗体夹心法（ELISA）测定血清sFas、sFasL、C反应蛋白（CRP）、白蛋白浓度。免疫组化观察桡动脉血管内皮细胞的FaS、FasL表达；采用荧光逆转录-聚合酶链式反应（RT—PCR）测定Fas、FasL mRNA的含量；彩色超声波测量颈总动脉血管内膜-中层厚度（IMT）。结果HD、CKD组血清中可溶性FasL显著高于正常对照组（P〈0．01），HD与CKD组水平差异无统计学意义，血清中可溶性Fas显著低于正常对照组（P〈0．01）。HD组血管壁Fas、FasL表达明显高于正常对照组。荧光RT-PCR Fas、FasL mRNA定量分析HD组较正常对照组高50．00％。63．49％（40／63）HD组患者IMT增厚。双变量线性相关分析发现，sFasL与CRP及IMT均呈明显的正相关r=0．58，r=0．64），P〈0．01：与白蛋白水平及肌酐清除率呈负相关（r=-0．53r=-0．62），P〈0．01；sFas则与之相反。结论血清sFasL水平及血管壁Fas、FasL高表达可能与动脉粥样硬化相关，其确切机制值得进一步研究。     

Soluble Fas and soluble Fas ligand levels in patients with acute hepatic failure

PURPOSE: The Fas ligand (FasL)/Fas system is an apoptosis induction system that plays an important role in homeostasis and biophylaxis. We measured tumor necrosis factor alpha (TNF-alpha), soluble FasL (sFasL), and soluble Fas (sFas) in patients with acute hepatic failure to determine the relation between such failure and apoptosis. MATERIALS AND METHODS: We assayed 21 blood samples from patients with acute hepatic failure and 8 from patients with sepsis but without acute hepatic failure. Serum TNF-alpha, sFas, and sFasL levels were determined by enzyme-linked immunosorbent assay. RESULTS: sFasL levels were significantly higher in the patients with acute hepatic failure than in the patients with sepsis (0.68 +/- 0.42 ng/mL vs. 0 ng/mL, P =.0001). No significant differences were observed in sFas levels between the two groups. A significant correlation was observed between TNF-alpha and sFas levels (r = 0.657, P =.0008); a negative correlation was observed between TNF-alpha and sFasL levels (r = 0.454, P =.038). CONCLUSIONS: Our results suggest that pathologic aggravation of acute hepatic failure are related to changes in the FasL/Fas system and that TNF-alpha and sFasL, in particular, may play hepatoprotective roles.     

卵泡液中游离Fas（sFas）、游离FasL（sFasL）以及LH的不同浓度对体外受精-胚胎移植中妊娠结局的影响

目的：分析体外受精（IVF）患者卵泡液中sFas和sFasL的浓度与妊娠的关系,以及与卵泡液中的促黄体素（LH）水平之间的相关性。方法：收集行IVF／ICSI患者的卵泡液,测定sFas、sFasL和LH浓度。结果：妊娠组排卵前卵泡液中的sFasL和LH水平显著高于未妊娠组（P分别为0．002和〈0．001）,两组中sFas水平没有明显差异。通过logistic回归分析,卵泡液中与妊娠有统计学相关的因素仅为LH,OR=4．117（P为0．001）。卵泡液中的LH和sFasL的水平呈明显正相关关系（P〈O．001）,LH与sFas之间无显著相关关系。结论：在IVF／ICSI治疗周期中,卵泡液中的sFasL蛋白和LH水平与妊娠结局有关,卵泡液中的LH水平可能通过调节卵泡局部的某些系统来调节卵泡中Fas-FasL系统介导的凋亡作用。     

Measurement of soluble Fas antigen and ligand in circulating serum and intra-abdominal or cerebrospinal fluid during gastrointestinal or cerebrovascular surgery

PURPOSE: Soluble Fas antigen (sFas) and ligand (sFasL), which are associated with apoptosis, have not been evaluated in gastrointestinal or cerebrovascular surgery. The aim of this study was to measure these substances in serum, intra-abdominal fluid, or cerebrospinal fluid, and to speculate a pathophysiologic role for Fas-FasL apoptosis in surgery. MATERIALS AND METHODS: Arterial blood and intraabdominal or cerebrospinal fluid were collected at intervals from 27 gastrointestinal surgical patients, 10 cerebrovascular surgical patients, and 10 spinal anesthesia patients. RESULTS: Serum sFas levels did not change during and after surgery. Intra-abdominal and cerebrospinal sFas levels were identical to and lower than those in serum. Serum sFasL levels did not change during surgery, but decreased after surgery. Intra-abdominal and cerebrospinal sFasL levels were higher than and identical to those in serum. In spinal anesthesia, cerebrospinal sFas and sFasL levels were lower than those in serum. CONCLUSIONS: Serum sFasL decreases after surgery, whereas intra-abdominal or cerebrospinal sFasL increases, although sFas in each site does not change, suggesting redistribution of activated lymphocytes into local surgical wounds and induction of apoptosis in this site.