慢性心力衰竭患者的血清可溶性Fas配体和可溶性Fas受体

目的 分析血清可溶性Fas配体(sFasL)和可溶性Fas受体(sEas)与慢性心力衰竭(CHF)的相关性。方法采用酶联免疫吸附双抗体夹心法检测33例CHF患者(CHF组,心功能Ⅱ-Ⅳ级,NYHA)血清sFasL和sFas浓度,并与18例心功能Ⅰ级(NYHA)组比较。结果 CHF与心功能Ⅰ级间sFasL浓度无显著统计学差异[231.50±84.50(心功能Ⅱ级216.50±96.00,Ⅲ级226.80±85.70,Ⅳ级244.00±73.00)vs217.50±89.00pg/mL,P>0.05]。而CHF组血清sFas浓度显著高于心功能Ⅰ级组[1353.30±507.71(心功能Ⅱ级1154.85±371.20,Ⅲ级1412.88±493.62,Ⅳ级1875.67±806.10)vs983.11±461.26pg/mL,P<0.05]。结论 血清sFasL与CHF无相关性。而血清sFas与CHF存在显著相关性。且sFas浓度增高的程度与CHF的严重程度相平行,sFas浓度增高可能在CHF发病机制中起重要作用。     

原发性胆汁肝硬化患者血清可溶性Fas、FasL水平变化及意义

采用双抗体夹心酶联免疫吸附法法检测20例原发性胆汁性肝硬化患者(PBC组)和24例正常体检者(对照组)血清可溶性Fas、FasL、(sFas、sFasL)水平.结果与对照组比较,PBC组血清sFas水平明显升高(P＜0.05),sFasL水平无明显差异(P＞0.05).提示检测血清sFas水平有助于PBC的诊断.     

老年肺癌患者血清可溶性Fas水平表达及其意义

目的探讨可溶性Fas(sFas)在老年肺癌及良性病变患者中的表达及其临床意义.方法用双抗体夹心ELISA法检测51例老年肺癌,15例结核和10例炎性假瘤患者血清中的sFas表达水平,并比较20例肺癌患者术前,术后;15例化疗前,化疗后sFas的变化.结果老年肺癌患者血清sFas水平(17.32±3.46)ng*ml-1明显高于良性病变及正常人(P＜0.01),随着临床分级的上升,sFas水平升高明显;sFas与年龄,性别,肿瘤大小及组织学分型无明显相关(P＞0.05).肺癌患者术后血清sFas水平较术前明显下降(P＜0.05);化疗后sFas水平较化疗前明显下降(P＜0.05)结论sFas可作为一种新的肿瘤检测指标,与肺癌的发生、发展及其预后密切相关.     

狼疮肾炎患者血清sFas和sFasL的变化

目的　研究狼疮肾炎患者血清sFas和sFasL的变化及意义。方法　采用双抗体夹心酶联免疫吸附法 (ELISA)检测正常对照 18例和狼疮肾炎患者 45例血清sFas和sFasL水平。结果　狼疮肾炎患者sFas和sFasL水平分别为 (14± 7) μg/L和 (0 0 7± 0 0 4) μg/L ,与正常对照组 (2 9±1 2 ) μg/L和 (0 0 5± 0 0 1) μg/L相比 ,差异有高度显著性意义 (P <0 0 1)。活动期sFas水平较缓解期明显增高 ,分别是 (17± 7) μg/L和 (9± 4) μg/L ,P <0 0 1;但sFasL活动期与缓解期差异无显著意义。狼疮肾炎血清sFas水平在白细胞减少、贫血、大量蛋白尿、肾功能减退、补体降低、ANA和抗RNP Ab阳性时升高 ;而sFasL仅在肾功能异常时减低 ,与其他指标没有明显相关性。结论　sFas及sFasL参与了狼疮肾炎的发生 ,sFas可作为狼疮肾炎的活动性实验室指标。     

慢性乙型肝炎患者血清sFas和sFasL的水平及临床意义

目的:探讨可溶性Fas(sFas)和可溶性FasL(sFasL)在慢性乙型肝炎患者血清中水平的高低及临床意义。方法:采用ELISA双抗体夹心法检测97例慢性乙型肝炎患者血清中sFas和sFasL的水平,并以30名健康献血员作为对照。结果:慢性重型肝炎、肝炎肝硬化、慢性活动性肝炎患者血清中sFas和sFasL的水平,与正常对照组之间存在显著差异(P<0.01),随着病情加重,sFas和sFasL的水平逐渐升高,以重型肝炎升高更为显著;但sFas/sFasL比值呈明显下降趋势。结论:慢性乙型肝炎患者血清中sFas、sFasL水平与病情严重程度密切相关,临床测定慢性乙型肝炎患者血清sFas和sFasL水平,时病情判断及预测转归有一定的参考价值。     

sFas与sFasL在自身免疫疾病中的意义

目的　研究sFas与sFasL在系统性红斑狼疮 (SLE)等自身免疫疾病中的意义及抗单链DNA(ssDNA)抗体与sFas和sFasL介导凋亡的相关性。方法　采用夹心ELISA方法检测 31例SLE病人 ,32例类风湿关节炎 (RA)病人 ,2 0例 1型糖尿病 (IDDM )病人及 5例多发性硬化病 (MS)病人血清中sFas与sFasL含量及抗ssDNA抗体水平。结果　在SLE、RA、IDDM及MS患者血清中的sFas含量 (pg/ml)分别为 2 881± 16 5 3 ,988± 6 96 ,135 2± 413 ,15 40± 5 6 6 ,明显高于正常对照 (P <0 0 0 2 ) ,SLE病人sFas含量高于RA ,MS ,IDDM病人。SLE、RA患者血清sFasL含量 (pg/ml)分别为5 35± 431、12 38± 1184,明显高于正常对照 (P <0 0 2 ) ,MS、IDDM患者血清sFasL含量 (pg/ml)分别为 2 5 1± 140 ,2 11± 73 ,低于正常对照 (P >0 0 5 )。在SLE、RA病人中 ,高浓度sFasL者伴有高浓度sFas。在SLE病人中 ,所有抗ssDNA抗体阳性者均伴有高浓度sFas,所有抗sFas阴性者 ,ssDNA抗体也为阴性。结论　在SLE等疾病中sFas水平明显高于正常人 ,可作为疾病进展与治疗效果的判断指标。抗ssDNA抗体与sFas具有关联性。sFas与sFasL在疾病中的相互作用及动态变化有待进一步研究     

sFas,sFasL在乳腺癌中的表达及临床意义

目的探讨乳腺癌患者血清可溶性Fas(sFas)、可溶性FasL(sFasL)水平的变化及临床意义。方法采用ELISA法检测85例乳腺癌患者,24例乳腺良性病变者,30例为非乳腺疾病患者血清中sFas、sFasL的含量,分析两者与乳腺癌临床病理参数相关性及临床治疗对他们的影响。利用免疫组化S-P法检测85例乳腺癌及30例正常乳腺组织sFas和sFasL表达。结果乳腺癌患者血清sFas、sFasl水平高于两对照组,Ⅲ Ⅳ期高于Ⅰ Ⅱ期,治疗后低于治疗前(均P<0.05),sFas、sFasL与其他临床病理参数无显著相关性,两对照组血清sFas、sFasL水平无显著性差异(P>0.05)。正常乳腺上皮、原位癌、浸润性癌中表达阳性率分别为40.0%,52.9%,69.2%;0.0%,100.0%,100.0%。结论sFas、sFasL可能与乳腺癌的免疫逃逸有关,可作为乳腺癌新的肿瘤标志物。     

血清sFas、sFasL水平与特发性血小板减少性紫癜的关系

采用酶联免疫夹心法(ELISA)检测了25例特发性血小板减少性紫癜(ITP)患者血清中sFas、sFasL的水平.结果显示ITP患者血清sFas含量为16.51±6.86μg/L,sFasL含量为0.48±0.33μg/L,均显著高于正常对照(分别为P<0.001和P<0.01);18例ITP患者血清sFas水平升高,其中有9例同时有sFasL水平升高,但是血清sFas水平升高组的血小板计数与sFas正常组无显著差异.提示sFas和sFasL的异常参与了ITP的免疫病理过程.     

胃癌患者血清可溶性FasL的变化及意义

应用双抗体夹心酶联免疫吸附法(ELISA)检测45例胃癌患者血清中可溶性FasL(sFasL)水平,并取30例健康献血员为对照。结果显示,胃癌患者术前血清sFasL为(15.24±1.25)μg/L,30例健康献血员sFasL病理为(4.21±1.13)μg/L。两组比较P<0.01。胃癌患者术前血清sFasL含量[(15.24±1.25)μg/L]显著高于术后(5.36±1.19)μg/L],P <0.01,且分期越高、分化程度越低、有淋巴结转移、肿瘤直径>3cm者,术前血清sFasL越高。提示胃癌患者血清中含有sFasL,且sFasL在胃癌免疫逃逸、反击机制中起重要作用;术前胃癌血清中sFasL水平可作为术后随访和判断预后的一个重要指标。     

慢性乙型肝炎患者肝组织Fas表达与血清可溶性Fas水平的关系

目的探讨患者肝组织中Fas的表达与血清可溶性Fas水平的关系。方法用免疫组化方法检测60例慢性乙型肝炎患者肝组织Fas的表达,同时用酶联免疫吸附试验检测血清可溶性Fas。结果重度慢性乙型肝炎患者血清中sFas水平>中度>轻度,各组间差异有显著意义(P<0.01);慢性乙型肝炎患者肝组织Fas表达的程度和血清sFas水平与肝组织病变的活动性一致。结论 1.肝组织炎症程度与肝组织Fas抗原的表达有关;2.Fas介导的肝细胞凋亡在慢性乙型肝炎的发病机制中起重要作用,抑制肝细胞Fas表达有助于减轻肝细胞损伤程度。     

糖尿病对急性心肌梗死患者细胞凋亡因子和炎性因子的影响

目的了解糖尿病（DM）对急性心肌梗死（AMI）患者Fas受体细胞凋亡途径和炎症反应的影响。方法70例急性ST段抬高心肌梗死患者,根据是否合并DM分为非糖尿病（NDM）组（36例）和DM组（34例）。应用ELISA方法测定两组患者血清sFas、sFasL和TNF-α、IL-6的含量。结果AMI合并DM组直接PCI后血清sFas和sFasL浓度明显高于NDM组（4.18±0.86vs3.30±0.82μg/L,6.15±1.56vs4.34±1.37μg/L;P〈0.01）。前者血清TNF-α、IL-6的浓度也高于后者（32.78±6.16vs20.54±9.17ng/L,75.28±19.60vs54.35±14.74ng/L;t=2.476,2.598;P〈0.05）。心功能killip3、4级患者血清sFas、sFasL、TNF-α和IL-6的浓度均高于killip2、1级患者（F=4.52,P〈0.05）。结论糖尿病可能通过促进Fas/FasL系统的激活加速AMI时细胞凋亡的发生,同时加剧机体炎症反应,这可能是合并DM的AMI患者病情较重和预后不良的原因之一。     

急性脑梗死患者血清sFas和sFasL水平的观察研究

目的 通过检测急性脑梗死(acute cerebral infarction,ACI)患者血清可溶性Fas(soluble Fas,sFas)和可溶性Fas配体(soluble Fasligand,sFasL)表达水平的变化,探讨sFas和sFasL与ACI病情变化的关系.方法 60例ACI患者(男性32例,女性28例)为研究组,30例健康体检者(男性12例,女性18例)为对照组.用酶联免疫吸附法检测两组血清sFas和sFasL水平,比较两组之间sFas和sFasL浓度的差异.结果 ACI组48 h、7 d和14 d时血清sFas水平分别为(6.27±1.48)ng/L、(4.99±1.15)ng/L和(3.74±0.58)ng/L,均显著高于对照组的(3.00±0.38)ng/L(F=7.29,P<0.01);ACI组48 h、7 d和14 d时血清sFasL水平分别为(4.40±1.32)ng/L、(3.19±0.94)ng/L和(1.91±0.45)ng/L,均显著高于对照组的(1.15±0.21)ng/L(F=8.60,P<0.01).大梗死组sFas和sFasL水平分别为(7.63±0.64)ng/L和(5.01±1.16)ng/L,显著高于小梗死组的(4.98±0.91)ng/L(t=12.12,P<0.01)和(3.58±0.87)ng/L(t=5.35,P<0.01).ACI患者血清sFas和sFasL水平呈正相关性(r=0.748,P=0.01).结论 血清sFas和sFasL水平高提示ACI患者梗死体积较大.     

Increased circulating levels of soluble Fas ligand are correlated with disease activity in patients with fibrosing lung diseases

OBJECTIVE: The Fas-Fas ligand (FasL) pathway is one of the important apoptosis-signalling molecule systems. We previously determined that this pathway may be involved in the pathogenesis of fibrosing lung diseases. In the present study, we evaluated the clinical significance of the levels of soluble forms of Fas (sFas) and FasL (sFasL) in serum from patients with fibrosing lung diseases. METHODOLOGY: We measured sFas, sFasL, KL-6 (a measure of alveolar type II cell damage), surfactant protein D (SP-D), and surfactant protein A (SP-A) levels in serum from 35 patients with idiopathic pulmonary fibrosis (IPF), 17 patients with interstitial pneumonia associated with collagen vascular diseases (CVD-IP), and 13 normal healthy controls using enzyme-linked immunosorbent assays (ELISA). RESULTS: The serum levels of sFasL were significantly increased in patients with active IPF and CVD-IP, compared with those with inactive disease and controls. There was no significant difference in sFasL levels between patients with inactive disease and controls. Serum sFasL levels were significantly correlated with lactate dehydrogenase and KL-6 levels in IPF. The decrease in sFasL levels following corticosteroid therapy was not correlated with the clinical course of IPF. There was no significant difference in serum sFas levels between IPF or CVD-IP patients and controls. CONCLUSIONS: Although further studies need to be performed on a large number of patients with histologically proven IPF or CVD-IP, it would seem that serum sFasL levels may reflect the activity of IPF and CVD-IP.     

Increased serum levels of soluble Fas in progressive B-CLL

Clinical progression of B-cell chronic lymphocytic leukemia (B-CLL) depends on survival and accumulation of leukemic cells, regulated in part by physical cell contact and soluble molecules. Here we have studied the Fas/FasL system in relation to clinical progression in B-CLL. Serum levels of soluble Fas (sFas) and FasL (sFasL) were determined by ELISA in 43 progressive and 40 non-progressive B-CLL patients and in 21 control individuals. Correlation between sFas serum levels and clinical progression, stage and survival were statistically analyzed. We found high levels of sFas in B-CLL sera correlated with disease progression (p<0.01). In addition, higher sFas levels were found in patients in stages II, III and IV in comparison to patients in stage 0 (p<0.05, p<0.01, p<0.03, respectively). Survival was significantly shorter for patients with > or =6 ng/ml sFas serum levels, although a multivariate analysis did not show sFas to be a significant independent prognostic factor. Fresh B-CLL cells showed only low levels of membrane expression, which were not correlated to sFas levels in serum. In vitro activation of B-CLL cells increased Fas expression, as reported earlier, and induced cells to release sFas into the supernatant. In conclusion, our results indicate that sFas in serum may be a useful parameter for the prediction of clinical progression in B-CLL.     

慢性HBV携带者肝组织Fas和Fas配体表达变化及其意义

目的：观察慢性HBV携带者（chronic asymptomatic HBV carrier,ASC）肝组织Fas和Fas配体（FasL）的表达和血清可溶性Fas（sFas）水平的变化。方法对120例ASC行肝穿刺,采用免疫组织化学法检测肝组织Fas和FasL表达,采用ELISA法检测血清sFas水平。结果120例ASC肝组织完全正常者仅占11%,轻度肝炎占59%,而中、重度肝炎占30%;表现正常的肝组织无Fas和FasL表达,轻度肝炎肝组织多无表达或仅限于界面炎症区的肝细胞及淋巴细胞阳性表达,而中、重度肝炎肝组织Fas和FasL多为阳性,Fas强阳性率分别达34.8%和69.2%,FasL强阳性率分别达30.4%和53.8%,均明显高于正常组和轻度炎症组（P〈0.05）,同时中、重度肝炎组间也存在显著性差异（P〈0.05）,其分布除界面炎症区外,肝小叶中也弥漫分布;肝组织表现正常的ASC血清sFas水平为（1.68±0.33） ng/L,而轻、中、重度肝炎患者则分别为（2.58±0.31）ng/L、（3.94±0.21）ng/L和（5.94±0.26）ng/L,均较正常组显著升高（F=218.01,P〈0.01）,各组间sFas水平也均具有统计学差异（P〈0.01）。结论 Fas和FasL介导的肝细胞凋亡在慢性HBV携带者肝组织病变中可能起到了重要作用。     

Influence of levothyroxine treatment on serum levels of soluble Fas (CD95) and Fas Ligand (CD95L) in chronic autoimmune hypothyroidism

Fas/FasL-mediated apoptosis results in the destruction of thyrocytes in chronic autoimmune hypothyroidism (CAIH). In this study, we examined the serum levels of soluble Fas (sFas) and soluble sFas ligand (sFasL) in euthyroid patients with chronic autoimmune hypothyroidism, who were taking levothyroxine (euthyroid, LT4-CAIH), to investigate the possible role of thyroid hormone therapy in down-regulation of apoptotic factors. Fifty euthyroid patients with CAIH on levothyroxine (median of duration 36 months, range 6-228 months) were compared with 75 age- and sex-matched healthy individuals. Serum levels of soluble Fas and soluble Fas Ligand, autoantibodies to thyroid peroxide and thyroglobulin were measured using ELISA. Serum levels of sFas were significantly higher in the euthyroid, LT4-CAIH group [median 9.12 ng/ml, interquartile range (7.86-10.72 ng/ml)] than in the controls [6.11 ng/ml (5.60-6.81 ng/ml)] (P < 0.0001). Compared with controls [80.33 pg/ml (68.22-103.70 pg/ml)], the euthyroid, LT4-CAIH group [125.71 pg/ml (106.11-149.48 pg/ml)] had significantly higher levels of sFasL (P < 0.0001). In a chronological study, there was no significant correlation between sFas, sFasL, and the duration of levothyroxine therapy. In conclusion, normalization of serum sFas and sFasL levels cannot be achieved during levothyroxine treatment in patients with CAIH. It appears that levothyroxine therapy has no important effect on down-regulation of apoptotic factors in CAIH. Thus, like thyroid autoantibodies, monitoring of serum levels of sFas/sFasL is not indicated during thyroid hormone therapy.     

Elevated serum-soluble fas ligand in Histiocytic necrotizing lymphadenitis

Recent studies have indicated that Fas and perforin-based mechanisms seem to induce apoptosis in histiocytic necrotizing lymphadenitis (HNL). In this study, we evaluated the serum levels of soluble Fas ligand (sFasL) in 30 HNL patients using paired sera. Elevations in sFasL levels were detected in 9 patients in the active stage. In the convalescent stage, the levels of sFasL decreased to an undetectable degree after 2 weeks. These findings indicate the possibility that sFasL plays an important role in the constitutional symptoms and pathogenesis of HNL and, furthermore, that it can act as a surrogate marker of the disease activity.