卡介菌多糖核酸对哮喘患者外周血辅助性T细胞亚群以及气道炎症的影响

目的 探讨卡介菌多糖核酸(BCG-PSN)对哮喘患者外周血辅助性T细胞亚群及气道炎症的影响.方法 26例慢性持续期中度哮喘患者,分为单药组(氟替卡松和沙美特罗)13例、联合组(氟替卡松和沙美特罗+BCG-PSN)13例.观察治疗前、用药1.5个月和3个月后外周血辅助性T细胞亚群(Th1、Th2、Th3)及其血清细胞因子、IgE含量、诱导痰炎症细胞和临床疗效的变化.结果 (1)哮喘患者治疗1.5个月时2组比较:联合组与单药组Th1/Th2[(1.20±0.57)与(0.79±0.39),t=2.129,P＜0.05]、哮喘控制测试(ACT)[(18.31±1.75)与(15.54±2.40),t=3.359,P＜0.01]比较差异有统计学意义.治疗3个月时2组比较:联合组较单药组Th1/Th2[(1.73±0.74)与(1.16±0.48),t=2.327,P＜0.05]、ACT[(22.46±1.13)分与(20.23±2.59)分,t=2.851,P＜0.01]明显升高;呼气峰流速(PEF)日内变异率3个月时联合组较单药组明显降低[(9.88±2.18)%与(12.05±2.74)%,t=2.235,P＜0.05],差异亦有统计学意义.(2)外周血辅助性T细胞亚群及其血清细胞因子、IgE含量、诱导痰炎症细胞,2组间差异均无统计学意义(P均＞0.05);2组Th3细胞与IgE水平之间均无明显相关性.结论 BCG-PSN联合氟替卡松和沙美特罗能进一步纠正Th1/Th2失衡,减轻哮喘临床症状和气道高反应性,随治疗时间延长,疗效进一步提高,对哮喘患者外周血Th3细胞无显著影响.

Abstract：

Objective To explore the effect of BCG-polysaccharide nucleic acid(BCG-PSN) on the numbers of Th3,Th2 and Th1 cells in peripheral blood mononuclear cell(PBMC) and airway inflammation status in patients with asthma.Methods Twenty-six patients with moderate persistent asthma were enrolled into the study and randomly divided into simple medication group(n=13,accepted Fluticasone/salmeterol alone) and combined medication group(n=13,accepted Fluticasone/salmeterol+BCG-PSN together).The numbers of Th3,Th1 and Th2 cells in PBMC, the serum levels of TGF-β,IFN-γ,IL-4 and IgE and the clinical effect and airway inflammation status were observed at three time points: before,1.5 months after and 3 months after treatment. Results (1)At 1.5 months after treatment,the Th1/Th2 number was significantly higher in the combined medication group than the simple medication group(1.20±0.57 vs 0.79±0.39,t= 2.129,P＜0.05),and the asthma control test scale(ACT) showed similar difference(18.31±1.75 vs.15.54±2.40,t=3.359,P＜0.01) between the two groups.(2)At 3 months after treatment,the Th1/Th2 number was significantly higher in the combined medication group than the simple medication group(1.73±0.74 vs1.16±0.48,t=2.327,P＜0.05),and the ACT also showed the same kind of difference(22.46±1.13 vs.20.23±2.59,t=2.851,P＜0.01) between the two groups.In addition,at this time point the PEF variability was significant lower in the combined medication group than the simple medication group([9.88±2.18]% vs.[12.05±2.74]%,t=2.235,P＜0.05).(3)We found no significant differences in the comparisons of the numbers of T helper cell subsets in PBMC ,the serum levels of cytokines and IgE,the numbers of inflammatory cells in induced sputum between the two groups(Ps＞0.05).(4)No correlation were found between Th3 cell numbers in PBMC and the serum levels of IgE in the two groups.Conclusion The combined use of Fluticasone/salmeterol and BCG-PSN can further correct the imbalance of Th1/Th2 cells,alleviate clinical symptom of asthma and airway hyper-responsiveness.The therapeutic efficacy improves along with the therapy period,better in the combined medication group than the simple medication group.BCG-PSN has no significant effects on the numbers of Th3 in PBMC in patients with asthma.     

凋亡抑制蛋白Livin在食管癌表达的实验研究

Objective To detect the expression of apoptotic inhibitor protein Livin in different esophageal epithelial lesions and to analyze the relation between the expression of Livin with pathologic characteristics. Methods The expressions of Livin mRNA and Livin protein were detected by real- time fluorescence quantitative PCR and western blot in 40 patients with different esophageal epithelial lesions including normal, atypical hyperplasia, carcino-ma in stiu and invasive carcinoma. Results The expressions of Livin mRNA were progressively increased from nor-mal to invasive carcinoma( 1.00 ± 0. 00,2.26 ± 0.79,7.24 ± 1.06,12.21 ± 2.47 ). There was statistical signifi-cance in Livin mRNA expression among carcinoma in stiu and invasive carcinoma and normal tissues ( P < 0.05 ). Conclusion The expression of Livin is significantly related to the progression of esophageal cancer,which may be a new target for diagnosis and gene treatment of esophageal carcinoma.     

HuR与环氧化酶-2在卵巢上皮性癌表达及相关性研究

Objective To detect the expressions of HuR and COX-2 in epithelial ovarian carcinoma,and investigate the correlation of HuR and COX-2 expression. In addition, we attempt to seek the pathway to prevent the occurrence and development of epithelial ovarian cancer by combined analysis of various clinicopathologic characteristics. Methods The expressions of HuR and COX-2 in 68 epithelial ovarian carcinoma, 10 borderline ovarian tumors and 5 normal ovarian tissues were examined by S-P immunohistochemical method. The relationship of HuR and COX-2 expressions with clinicopathologic parameterwere evaluated by correlation analysis. Results(1) The expression of HuR in epithelial ovarian cancer tissue (76. 47% ,52/68) was significantly higher than that in borderline epithelial ovarian tumor tissues (30. 00% ,3/10) and normal ovarian tissues (0, x2 = 18. 873, Ps ＜ 0. 05), but there were no significant differences betweenthe expressions of HuR in borderline epithelial ovarian tumor and normal ovarian tissue(P ＞ 0. 05).(2) The positive expression rate of cytoplasmic HuR in epithelial ovarian carcinoma and borderline epithelial ovarian tumor were 45.60% (31/68) and 10. 00% (1/10) respectively,but normal ovarian tissues showed no staining of HuR. We found no significant differences between the expression of cytoplasmic HuR in epithelial ovarian carcinoma and borderline epithelial ovarian tumor or normal ovarian tissue(x2 = 7. 999 ,P =0. 018).(3) The positive expression rate of cytoplasmic HuR in epithelial ovarian carcinoma of FIGO stage Ⅲ - Ⅳ was significantly higher than that of stage Ⅰ - Ⅱ(56. 09% vs. 29. 63%, x2 = 4. 598, P = 0. 032). The positive expression rates of cytoplasmic HuR in epithelial ovarian carcinoma of histological grade 1,2,3 were 10. 00%,46. 67% ,57. 14% respectively, which showed significant difference in the comparison among the three groups (x2 =6. 627 ,P =0. 036). (4) The positive expression rates of COX-2 in epithelial ovarian cancer (67. 64%)and borderline epithelial ovarian tumor tissues (60. 00%) were significantly higher than that in normal ovarian tissues (0, Ps ＜ 0. 05), but we found no significant difference in the comparison between the expression of malignant and borderline ovarian tumors. Statistical analysis showed that the positive expression rate of COX-2 in epithelial ovarian carcinoma was correlated with FIGO stage and lymph node metastasis. (5)There was a significantly positive correlation between cytoplasmic HuR and COX-2 expressions in epithelial ovarian carcinoma. Conclusion The expressions of HuR and COX-2 increased in the epithelial ovarian carcinoma, and the cytoplasmic expression of HuR was significantly correlated with the expression of COX-2. These results suggested that increased cytoplasmic expression of HuR and COX-2 expression might play important roles in the initiation and development of epithelial ovarian carcinoma.     

CIK逆转K562/ADR细胞多药耐药作用及其机制探讨

目的 研究细胞因子诱导的杀伤细胞(CIK)体外逆转阿霉素(ADR)耐药细胞株K562/ADR细胞多药耐药(MDR)的作用,并探讨其机制.方法 健康人外周血单个核细胞经细胞因子体外诱导获得CIK,检测其表型和培养上清液细胞因子含量.实验组为CIK作用于K562/ADR细胞48 h后加入ADR;对照1组为CIK作用于K562/ADR细胞48 h,对照2组为ADR作用K562/ADR细胞48 h.采用MTT法检测各组细胞杀伤活性,用流式细胞术检测细胞膜P-糖蛋白(P-gp)含量、细胞内ADR浓度等.结果 实验组对K562/ADR细胞杀伤活性高于对照1组(P＜0.05);且随效靶比增大,杀伤活性增大(P＜0.05);随所加入的ADR浓度增大,杀伤活性无明显变化(P＞0.05).实验组和对照1组的P-gp含量均下降(P＞0.05).实验组细胞内ADR浓度高于仅经ADR作用的对照组2组(P＜0.05),但细胞内ADR浓度与加入的ADR浓度无明显关系(P＞0.05).结论 通过CIK与ADR对K562/ADR细胞的先后作用,降低了其细胞内P-gp的表达,提高了K562/ADR细胞内ADR浓度,增强了ADR对耐药细胞的杀伤活性.为应用生物活性细胞逆转MDR提供理论依据.

Abstract：

Objective To investigate the effects and mechanism of cytokine-induced killer(CIK) cells in reversing multidrug resistance(MDR) and increasing intracellular concentration of adriamycin(ADR)in the K562/ADR cells. Methods Peripheral mononuclear cells (MNCs) were isolated from healthy donors and cultured with combined cytokines to generate CIK. The changes of cell phenotype and cytokines secretion of CIK were determined. K562/ADR cells were divided into three groups: ADR in combination CIK (group Ⅰ ), CIK alone (group Ⅱ ) and ADR alone (groupⅢ) . The viability and proliferation of K562/ADR cells were assayed by MTT assay, the intracellular concentration of ADR and the expression of P-glycoproteins (P-gp) in K562/ADR cells by FCM. Results The cytotoxicity of ADR in group Ⅰ was higher than that in group Ⅱ ( P ＜0.05 ). The cytotoxicity was increased with the E/T ratio increasing( P ＜0.05 ) but had no relation with the concentration of ADR in group Ⅰ (P＞0.05). The expression of P-gp was declined in group Ⅰ and group Ⅱ (P ＞0.05 ). The intracellular concentration of ADR in group Ⅰ was higher than that in group Ⅱ ( P ＜ 0.05 ), and had no relation with the ADR concentration ( P ＞ 0.05 ). Conclusion Pre-treatment with CIK can increase the cytotoxicity and the intracellular concentration of ADR and decrease the expression of P-gp in K562/ADR cells in the ADR and CIK combination group. Acute leukemia patients would be most likely to benefit from the combination of chemotherapy and CIK therapy.     

基质金属蛋白酶-2在胰腺癌组织中的表达及其临床意义

Objective To investigate the expression of matrix metalloproteinase-2 (MMP-2)in pancreatic carcinoma and the relationship between MMP-2 with tumour clinicopatholngical features. Methods The expression of MMP-2 was detected by S-P immunohistochemistry in 36 cases with pancreatic carcinoma and 14 normal pancreat-ic tissues. Results The positive expression rate of MMP-2 was 66.7% (24/36) in pancreatic carcinoma tissue and 14.3% (2/14) in normal pancreatic tissues (χ2 = 3. 587, P < 0.01 ) ;The expression rate of MMP-2 in pancreatic carcinoma tissue with positive-node was 86.7% ( 13/15 ) ,which was higher than that with negative-node,which was 52.4% ( 11/21 ) ( P < 0.05 ) ; As to TNM staging in pancreatic carcinoma, the expression rate of MMP-2 was 41.2% (7/17) with Ⅰ,Ⅱ staging and 89.5% (17/19) with Ⅲ,Ⅳ staging(χ2=9.418,P <0. 01 ) ;The expression rate of MMP-2 was 50.0% (5/10) ,66.7% (10/15) and 72.8% (8/11) in highly,moderately and poorly differentiated pancreatic carcinoma(P > 0.05 ). Conclusions The expression of MMP-2 is strengthened significantly in pancreatic carcinoma tissue and involved in turnout invasion and metastasis features; MMP-2 might be regarded as one more marker for the invasive properties of pancreatic carcinoma.     

脓毒症患者自然调节性T细胞及可溶性CD25水平研究

目的 通过前瞻性研究探讨脓毒症患者外周血自然调节性T细胞(Treg)百分比和血浆可溶性CD25分子(IL-2sRa)水平的变化及其临床价值.方法 将2009年2月至2010年2月上海交通大学附属瑞金医院重症医学科所收治的符合ACCP/SCCM于1997年提出的SIRS与脓毒症诊断标准的37例脓毒症患者与15例非感染SIRS患者,以及上海交通大学附属瑞金医院体检中心24例排除感染及免疫系统基础疾病患者,根据诊断标准分为脓毒症组、非感染SIRS组与正常对照组.其中脓毒症组男性26例,女性11例,年龄(61.67±11.87)岁;非感染SIRS组男性8例,女性7例,年龄(67.06±12.57)岁;正常对照组男14例,女10例,年龄(56.54±6.37)岁.脓毒症组肺部感染28例,腹腔感染6例,其他4例;非感染SIRS组为择期清洁手术后24 h内无感染征象者.所有入选对象均排除免疫系统基础疾病和(或)近期(30 d内)曾使用或正在使用强效免疫抑制剂患者.流式细胞分析术检测三组外周血Treg细胞百分比,ELISA检测血浆IL-2sRa,IL-4,IFN-γ水平.所得数据采用方差分析及非参数检验的Kruskal-Wallis H方法.结果 ①Treg细胞在脓毒症组、SIRS组和正常对照组占外周血CD4+CD25+T细胞的比例分别为:(66.82±21.79)%,(51.79±21.79)%、(56.45±10.68)%,脓毒症组Treg细胞显著高于SIRS组和正常对照组(P=0.001).②与SIRS组(381.664±189.83)和对照组(164.132±56.37)相比,脓毒症组可溶性CD25分子(IL-2sRa)水平(425.619±270.12)显著增高(P=0.000).③IL-2sRa浓度与Treg细胞占CD4+CD25+T细胞的比例相关分析示:Spearman相关系数=0.390,P=0.003(P＜0.05),两者存在正相关关系.结论 Treg细胞在脓毒症患者外周血的表达水平特征性增高.而外周血IL-2sRa水平可以反映Treg细胞表达水平,也有助于简化判断脓毒症的免疫状态的方法.

Abstract：

Objective To explore the CD4 + CD25 + Foxp3 + regulatory T cell percentage and plasma levels of soluble CD25 molecules in peripheral blood of septic patients and their clinical value through prospective study. Method A total of 37 septic patients and 15 non-infectious SIRS patients, who conformed to the criteria of SIRS and sepsis which proposed by American College of Chest Physicians/Society of Critical Care Medicine Consensus Conference ( ACCP/SCCM ) in 1997, were collected in ICU of Ruijin Hospital ( Shanghai Jiaotong University) from February 2009 to February 2010. Twenty-four health people were from Medical Center of Ruijin Hospital, who were excluded infection and (or) autoimmune diseases. There were 26 male and 11 female in sepsis group, average age ( 61.67 ± 11.87 ) years old; 8 male and 7 female in SIRS group, average age (67.06 ± 12.57)years old; 14 male and 10 female in health control, average age (56.54 ± 6.37 )years old. All selected patrents were excluded the autoimmune diseases and (or) patients within recent (30 days) had used or now used immunosuppressive agents. We therefore measured the Treg cell percentage in peripheral blood by Flow Cytometry and the plasma levels of IL-2sRa, IL-4, IFN-γ by ELISA. The data were analyzed by analysis of variance or nonparametric Kruskal-Wallis H test. Results ① The percentage of CD4 + CD25 + Foxp3 + regulatory T cells among septic patients, SIRS patients, and control group was: ( 66.82 ± 21.79 ) %, ( 51.79 ± 21.79 ) %, ( 56.45 ± 10. 68 ) %, respectively. septic patients showed the highest percentages of CD4 + CD25 + Foxp3 + regulatory T cell among CD4 + CD25 + T cells(P ＜ 0.05 ). ② The plasma levels of soluble CD25 in septic patients (425. 619 ± 270.12 ) were significantly higher than SIRS patients (381. 664 ± 189.83) and the control group ( 164. 1 32 ± 56.37 ) ( P ＜ 0.05 ). ③ The correlation analysis between the concentration of soluble CD25 molecules in plasma and the ratio of CD4 + CD25 + Foxp3 + regulatory T cells to CD4 + CD25 + T cells showed Spearman correlation coefficient =0.390, P = 0.003 ( P ＜ 0.05 ). Conclusion: the expression of natural regulatory T cells characteristically increased in septic patients. And the levels of soluble CD25 in peripheral blood were related to the percentages of natural regulatory T cells, which simplified the assessment of the immune status in Septic patients.     

脓毒症患者辅助性T细胞17和CD4+CD25+调节性T细胞表达及血必净注射液的干预作用

目的 观察脓毒症患者外周血辅助性T细胞17(Th17)及CD4+CD25+调节性T细胞(Treg)的水平,并探讨其意义及血必净注射液的干预作用.方法 ①将64例重症监护病房(ICU)脓毒症患者按疾病严重程度分为脓毒症组(26例)、严重脓毒症组(21例)、脓毒性休克组(17例),同时选取18例健康体检者作为对照组.观察不同严重程度脓毒症患者外周血Th17和CD4+CD25+Treg的表达及其与病情严重程度的关系.②按随机原则将64例患者分为常规治疗组(25例,给予常规集束化治疗)和血必净治疗组(39例,在常规治疗基础上加用血必净注射液50 ml静脉滴注,每日2次),两组均以7 d为1个疗程.入ICU当日和治疗7 d用流式细胞术检测外周血Th17及CD4+CD25+Treg表达,观察血必净注射液的干预作用.结果 ①健康对照组Th17表达率为(0.84±0.29)%,CD4+CD25+Treg表达率为(0.43±0.20)%;脓毒症患者细胞表达均较健康对照组明显升高(均P<0.05),其中Th17表达以严重脓毒症组最高[(3.18±0.84)%],CD4+CD25+Treg 表达以脓毒性休克组最高[(3.28±0.76)%].脓毒症患者CD4+CD25+Treg与急性生理学与慢性健康状况评分系统Ⅰ(APACHE Ⅰ)评分和血乳酸均呈正相关(r1=0.519,r2=0.451,均P=0.01).②与常规治疗组比较,血必净注射液能更有效降低脓毒症患者Th17和CD4+CD25+Treg的异常表达[Th17:(1.72±0.69)%比(2.35±0.81)%,CD4+CD25+Treg:(1.78±1.00)%比(2.30±0.85)%,均P<0.05],纠正免疫平衡紊乱,缩短住ICU时间[(4.7±2.6)d比(7.5±4.3)d,P=0.0023,使脓毒症患者28 d病死率有降低趋势(20.5%比28.0%,P>0.05).结论 脓毒症患者外周血Th17和CD4+CD25+Treg表达增加,且与病情严重程度呈正相关,提示Th17和CD4+CD25+Treg在脓毒症发生发展的免疫机制中可能起着重要作用.血必净注射液能有效降低脓毒症患者Th17和CD4+CD25+Treg的异常表达,有降低脓毒症患者病死率的趋势.

Abstract：

Objective To study the level and significance of T helper 17(Th17)and CD4+CD25+regulatory T cells(Treg)in peripheral blood of patients with sepsis and to evaluate the effects of Xuebijing of Anhui Provincial Hospital were divided into three groups:sepsis group(n=26),severe sepsis group (n=21),and septic shock group(n=17).Eighteen healthy individuals served as controls.The comparison in the expression of Th17 and CD4+CD25+Treg within groups and the correlation between their levels and group(n=25,received routine bundle treatment)and Xuebijing treatment group(n=39,received bundle treatment+Xuebijing treatment).Patients in Xuebijing treated group were given 50 ml Xuebijing injection two times per day in addition to routine bundle treatment.Seven days constituted one course of treatment.The expressions of Th17 and CD4+CD25+Treg of 64 patients on the 1 day and 7 days after treatment were detected by flow cytometry.The effects of Xuebijing injection on the patients were evaluated.Results in control group,and they were lower than that of patients with sepsis(P<0.05).The expression rate of Th17 was higher in severe sepsis group [(3.18±0.84)%]than that of other two groups(P<0.05).Moreover,The expression rate of CD4+CD25+Treg was highest [(3.28±0.76)%]in septic shock group (P<0.05),and it was positive correlated with acute physiology and chronic health evaluation Ⅰ(APACHE routine group,our study indicated that Xuebijing injection could reduce the abnormal expression of Th17[(1.72±0.69)%vs.(2.35±0.81)%,P<0.05] and CD4+CD25+Treg[(1.78±1.00)% vs.(2.30±0.85)%,P<0.05] and decrease length of stay in ICU[(4.7±2.6)days vs.(7.5±4.3)days,P=0.002].It also lowered 28-day mortality of patients with sepsis,but the difference between two groups was not significant(20.5%vs.28.0%,P>0.05).Conclusion The expression of Th17 and CD4+CD25+Treg was increased in sepsis patients and was positively correlated with severity of sepsis,suggesting that they may play an important role in pathogenesis of sepsis.Xuebijing injection could decrease the abnormal expression of Th17 and CD4+CD25+Treg and tend to decrease the fatality rate of sepsis.     

MMP-2／MMP-9在乳腺癌组织中的表达及其与肿瘤浸润转移的关系

BACKGROUND: Matrix melloproteinases play a pivotal role in tumor invasion and metastasis, but little is known about the correlation between their expression and the prognosis of breast cancer.OBJECTIVE: To investigate the expression of matrix melloproteinases-2 and matrix melloproteinases-9 (MMP-2/MMP-9) and the distributive form of CollV (type IV collagen)in the tissues of breast carcinoma, and find out their relationship with tumor invasion and metastasis so as to disclose the mechanism of the tumor invasion and metastasis of breast carcinoma.SETTING and PARTICIPANTS: Eighty-two filed wax masses of samples from the removed breast carcinoma and 30 filed wax masses of samples from the control group were collected at random from the First Affiliated Hospital of Fujiatt Medical University.MAIN OUTCOME MEASURE: The expression of MMP-2, MMP-9 and the distributive form of CollV in the tissues of breast carcinoma and in the tissues without breast carcinoma, and the correlation of the results with clinieopathological tumor parameters.METHODS: Tissues were obtained from 82 patients with breast carcinoma and 30 without breast carcinoma. The expression of MMP-2, MMP-9 and the distributive form of ColIV were examined, and their correlation with clinicopathological tumor parameters was explored.RESULTS: ① The positive incidences of MMP-2 and MMP-9 expression in 82 cases of breast carcinoma were 52 % (43/82) and 54% (44/82) respectively, The distributive form of encapsulated CollV was 15% (12/82),and the distributive form of decomposed CollVwas 85% (70/82), which were different apparently from those of the control group, ② The expressions of MMP-2/MMP-9 were related to the distribution form of ColIV( P &;lt; 0.05).③The expression of MMP-9 was related with the metastasis of the axillary lymph node (X^2 =8, 1899, P &;lt; 0, 05), and the expressions of MMP-2 was not related with the metastasis of the axillary lymph node(X^2 = 3. 3590, P&;gt;0.05),CONCLUSION: MMP-2, MMP-9 play a pivotal role in tumor invasion and metastasis. The result is suggested that detection of MMP-2/MMP-9 helps to judge the malignant severity of breast carcinoma and its biological behavior.     

Expression and significance of β-catenin and peroxisome proliferator-activated receptor-γ in hepatocellular carcinoma

Objective To investigate the expression and significance of β-catenin and peroxisome prolifera-tot-activated receptor-γ,(PPARγ) in bepatocellular carcinoma. Methods Tissue microarrays were established to detect β-catenin and PPARγ expression in 49 cases of hepatocellular carcinoma,49 cases of adjacent nontumoral liv-er tissue and 6 cases of normal liver tissue. The relationships between PPARγ and β-catenin as well as between PPARγ and clinicopathological parameters were observed. Results The aberrant expression rate of β-catenin was 69.39%,48.98 % and 0 respectively (P=0.001). The positive expression rate of PPARγ was 51.02%,30.61% and 0 respectively (P=0.016). Clinicopathological analysis revealed that the increase of PPARγ expression was not associated with age,tumor size,serum alpha fetoprotein (AFP) levels,tumor embolus of portal vein or inferior vena cava,and HBsAg infection(χ2=0.214,3.201,0.046,3.201,P>0.05 for each),but correlated with differentiation grades(χ2=4.693,P<0.05). Aberrant expression of β-catenin was associated with PPARγ expression(χ2= 5.130,P<0.05). Conclusion Aberrant expression of β-catenin may involve in the liver carcinogenesis. The high expression of PPARγ in hepatocellular carcinoma is significantly correlated with the clinicopathological characteris-tics. Detection of PPARγ is valuable for diagnosing hepatocellular carcinoma,and evaluating malignancy extent and prognosis.     

PLCE1和RFT2表达与食管鳞状细胞癌的相关性及对预后的影响

目的分析PLCE1和RFT2表达与食管鳞状细胞癌的相关性及对预后的影响。方法选取90例食管癌患者,采用免疫组化SP法检测食管鳞状细胞癌组织中和癌旁正常食管组织中PLCE1和RFT2的表达,分析PLCE1和RFT2在食管鳞状细胞组织及正常食管组织中的表达、PLCE1和RFT2的表达与临床病理特征的关系以及PLCE1和RFT2的表达相关性。结果PLCE1和RFT2在食管鳞状细胞组织及正常食管组织中的阳性率分别为86.67%、16.00%及80.00%、18.00%,差异有统计学意义(P0.05);PLCE1和RFT2表达与食管癌临床T分期、淋巴结转移及肿瘤最长径相关(P0.05);食管癌组织中的PLCE1与RFT2表达呈明显正相关(rs=6.544 8,P0.05)。结论 PLCE1和RFT2在食管鳞状细胞癌中呈高表达,且与肿瘤最长径、淋巴结转移及临床分期关系密切。     

地塞米松对系统性红斑狼疮患者外周血单个核细胞中细胞因子分泌及T细胞亚群表达的影响

目的 探讨地塞米松对系统性红斑狼疮(SLE)患者外周血单个核细胞(PBMCs)中白细胞介素(IL)-17、干扰素(IFN)-γ分泌水平和Th17、Tc17、Th1、Tc1等T细胞亚群表达的影响.方法 SLE患者和健康对照者的PBMCs分空白孔、佛波酯(PMA)/离子霉素(Ionomycin)孔、PMA/Ionomycin+地塞米松(DEX)孔行体外培养,运用四色流式细胞术检测PBMCs表达Th17、Tc17、Th1、Tc1等T细胞亚群的百分比,采用酶联免疫吸附法测定SLE患者和健康对照者血浆及PBMCs培养上清中IL-17、IFN-γ的表达水平.结果 SLE组患者血浆IL-17[138.98(84.82～187.04)ng/L]、IFN-γ[21.92(15.95～27.09)ng/L]含量均高于正常对照组[57.21(47.78～72.12)ng/L,13.43(7.04～17.37)ng/L].无PMA刺激条件下,SLE患者PBMCs培养上清中细胞因子水平、PBMCs中各T细胞亚群的百分比与正常对照组相比差异均无统计学意义(P均＞0.05);加入PMA刺激后,SLE患者PBMCs上清中IL-17的水平[(26.43±10.04)ng/L]和外周血Th17[(2.49±1.49)%]、Tc1[(44.89±16.43)%]细胞的比例均显著高于正常对照组[(18.06±5.42)ng/L,(1.47±0.73)%,(31.41±9.05)%)(P均＜0.05),SLE患者Th1、Tc17细胞百分比与正常对照组相比,差异均无统计学意义(P均＞0.05);地塞米松能明显抑制活化状态下的PBMCs分泌IL-17的水平[(16.72±6.09)ng/L](P＜0.01),且显著下调Th17(1. 34±0.76)%、Tc1(34.62±17.25)%细胞百分比(P均＜0.05),而地塞米松对IL-17的抑制作用更强.结论 SLE患者体内T细胞亚群及其相应细胞因子的表达水平存在明显异常,地塞米松能干扰SLE患者体内细胞因子网络失衡的免疫病理过程,且对IL-17有明显的抑制作用,为临床使用糖皮质激素治疗SLE提供新的理论依据和实验室基础.     

非小细胞肺癌患者癌组织免疫微环境中Th1、Th2、Th17的表达水平及意义

目的 探讨非小细胞肺癌(non small cell lung cancer,NSCLC)患者癌组织免疫微环境中辅助性T淋巴细胞(Th)1、Th2、Th17的表达水平及意义.方法 选取NSCLC 64例,比较治疗前癌组织与癌旁正常组织细胞因子干扰素-γ(IFN-γ)、白细胞介素(IL)-4、IL-17水平和Th1、Th...     

IL-37对变应性鼻炎患者相关细胞因子免疫调控研究

目的 探究白介素37(1L-37)在变应性鼻炎(AR)患者外周血单核细胞(PBMCs)的表达水平及对相关细胞因子的免疫调控分析.方法 选取120例AR患者作为研究组,另选择同期健康志愿者120例作为对照组,检测各组血清IL-37蛋白及mRNA表达,辅助性T细胞1(Th1)、Th2、Th17、CD4+CD25+调节性T细...     

原发性胆汁性肝硬化患者外周血单个核细胞在体外对脂多糖刺激的反应

目的通过观察原发性胆汁性肝硬化(primary biliary cirrhosis,PBC)患者外周血单个核细胞(peripheral blood mononuclear cells,PBMCs)在体外自然状况及在脂多糖(lipopolysaccharide,LPS)刺激下分泌细胞因子的特点,探讨LPS和细胞因子在PBC发病机制中的作用。方法采集PBC、原发性干燥综合征(primary Sj gren sjsyndrome,pSS)患者及健康对照者的PBMCs,分别置于加或不加0.01mg/ml LPS的RPMI1640完全培养基中培养,ELISA法检测PB-MCs上清液中的细胞因子--白细胞介素(interleukin,IL)-1β、IL-2、IL-6、IL-10、肿瘤坏死因子α(tumor necrosisfactor-α,TNF-α)和干扰素γ(interferon-γ,IFN-γ)的水平。结果 (1)新鲜提取的PBMCs与液氮冻存复苏后的PBMCs,在体外对LPS刺激的反应具有明显差异。(2)在无LPS刺激培养的PBMCs上清液中,PBC患者的IL-2水平高于健康对照者,差异有统计学意义(P0.05)。(3)在LPS刺激培养的PBMCs上清液中,PBC患者的IL-1β、IL-2和TNF-α水平高于健康对照者,差异有统计学意义(P0.05)。(4)LPS刺激后,PBC患者PBMCs上清液的IL-1β升高幅度和IL-2降低幅度与健康对照者比较,差异有统计学意义(P0.05)。(5)PBC与pSS比较,无LPS刺激时各细胞因子水平差异无统计学意义;LPS刺激后PBC患者IL-6高于pSS患者,差异有统计学意义(P0.05)。(6)IFN-γ在PBC患者PBMCs上清液中几乎检测不到,将LPS浓度提高至0.1和1.0mg/ml仍未检测到IFN-γ。结论 PBC发病与细菌感染有关,LPS在PBC的发病中起一定作用;多种细胞因子与PBC发病有关,其中以Th1型细胞因子为主。     

病毒感染对慢性阻塞性肺疾病患者Th1/Th2偏移状态的影响

目的 探讨病毒感染与慢性阻塞性肺疾病(COPD)的关系,及病毒感染对COPD患者Th1/Th2偏移状态的影响.方法 应用间接ELISA法时81例COPD急性加重期患者、25例稳定期患者和22例正常对照者的血清进行呼吸道合胞病毒(RSV)、单纯疱疹病毒-1型(HSV-1)、副流感病毒(PIV)、腺病毒(ADV)、巨细胞病毒(CMV)的特异性抗体IgM进行检测.同时测定外周血单个核细胞上清液中细胞因子INF-γ和IL-4水平.结果 急性加重期组IgM阳性28例(34.57%),稳定期组和对照组lgM阳性率均为0,差异有统计学意义(X2=12.16,P<0.01).急性加重期组INF-γ和IL-4分别为(242±43)ng/L和(42±9)ng/L,稳定期组分别为(198±32)ng/L和(56±11)ng/L,对照组分别为(90±18)ng/L和(141±24)ng/L,差异有统计学意义(F分别为26.03和114.69,P均<0.01).急性加重期IgM阳性组INF-γ和IL4分别为(278±54)ng/L和(39±8)ng/L,阴性组分别为(185±33)ng/L和(61±13)ng/L,差异有统计学意义(t值分别为2.65和2.82,P均<0.01).结论 病毒感染是COPD急性加重期的重要诱因,COPD患者存在向Th1极化的调控,且病毒感染加强了COPD患者的Th1优势.     

系统性红斑狼疮患者外周血Th17和CD4+CDhigh25Treg细胞及相关细胞因子的检测及意义

目的 探讨SLE患者外周血Th17及CD4+ CDhigh25Treg细胞及相关细胞因子IL-17、IL-21、TGF-β和IL-10的水平变化及意义.方法 选取2009-2010年河南省人民医院56例SLE患者(非活动期26例、活动期30例)及28名健康对照者.采用流式细胞术检测外周血单个核细胞中Th17及CD4+ CDhigh25 Treg细胞水平;采用QRT-PCR检测RORγt mRNA和Foxp3 mRNA的表达水平;采用ELISA检测血浆IL-17、IL-21、TGF-β和IL-10水平,并分析其与SLE的相关性.结果 SLE患者组外周血Th17细胞水平为(3.44±0.96)％,显著高于健康对照组的(2.42±0.52)％,差异有统计学意义(t=5.38,P=0.000).SLE患者组外周血CD4+CDhigh25Treg细胞水平为(1.32±0.57)％,显著低于健康对照组的(2.07±0.67)％,差异有统计学意义(t=3.28,P=0.034).SLE患者的RORγt mRNA表达水平为(0.219±0.063),高于健康对照组的(0.087±0.045),差异有统计学意义(t=6.41,P=0.000);而SLE患者的Foxp3+ mRNA表达水平为(0.063±0.045),低于健康对照组的(0.128±0.056),差异有统计学意义(t=5.28,P=0.000).SLE患者组IL-17、IL-21、IL-10水平分别为122.4(60.5～188.3)、167.2(128.7 ～871.4)、51.3(20.9 ～123.7)ng/L,高于健康对照组的27.1(18.1 ～86.2)、31.0(31.0～424.5)、33.5(16.4～54.1) ng/L,差异有统计学意义(Z值分别为3.83、4.54、1.87,P均＜0.05),TGF-β水平为31.0(31.0 ～168.6) ng/L,低于健康对照组的159.8(63.4～389.7)ng/L,差异有统计学意义(Z=4.87,P＜0.05).SLE患者血浆IL-17水平与Th17细胞水平、SLEDAI积分、抗dsDNA抗体水平呈显著正相关(r=0.621、0.581、0.512,P＜0.05),与补体C3水平呈负相关(r=-0.543,P＜0.05).CD4+ CDhigh25Treg细胞与SLEDAI积分呈负相关(r=- 0.423,P＜0.05),与补体C3水平呈正相关(r=0.511,P＜0.05).结论 SLE患者Th17细胞数量增高,CD4+ CDhigh25 Treg细胞数量减少,以及相关细胞因子的紊乱在SLE的发病机制中可能起到重要作用.     

外周血淋巴细胞亚群、细胞因子在未足月胎膜早破孕妇中水平变化及与绒毛膜羊膜炎发生的相关性研究

目的 探究外周血T淋巴细胞亚群、B淋巴细胞亚群及细胞因子在未足月胎膜早破(preterm premature rupture of membrane,PPROM)孕妇中水平变化及与绒毛膜羊膜炎发生的相关性.方法 选取2018年1月—2019年12月于本院就诊的PPROM孕妇50例作为研究组,以同期未发生胎膜早破孕妇5...     

肺癌患者治疗前后Th1／Th2细胞因子的免疫反应状态变化

目的 分析肺癌患者治疗前后Th1／Th2细胞因子的免疫反应状态变化,为肿瘤的免疫治疗提供依据。方法40例肺癌患者分别于治疗前、后用流式细胞仪分析外周血特异性细胞因子表达水平,同时用酶联免疫吸附试验（ELISA）检测血清中相应的细胞因子量。另设20例体检健康人作为对照。结果肺癌患者治疗前Th1型细胞因子干扰素-1（IFN-1）、白细胞介素-2（IL-2）、白细胞介素-12（IL-12）表达水平较正常对照组显著降低,Th2型细胞因子白细胞介素4（IL4）、白细胞介素-10（IL-10）和肿瘤坏死因子-α（TNF-α）表达水平较正常对照组升高,差异有统计学意义（均P〈0．05）。治疗后上述细胞因子均有不同程度的变化,对治疗反应良好患者其细胞因子表达水平表达水平变化越显著。结论肺癌患者体内Th2型细胞因子模式占优势状态,可能与肺癌患者免疫功能受损有关,可作为评估肺癌患者预后的一项指标。XUa中国学习动力网     

PRR11和SKA2在食管鳞癌中的表达及与临床预后的关系

目的:观察脯氨酸蛋白11(proline-richprotein11,PRR11)和动粒相关蛋白2(spindleand kinetochore associated 2,SKA2)在食管鳞癌组织中的表达,并分析与食管鳞癌临床病理参数、预后间的关系。方法:采用免疫组织化学方法检测PRR11和SKA2在100例食管鳞癌组织及其癌旁正常组织标本中的表达,统计学分析二者与食管鳞癌临床病理参数、预后间的关系。结果:PRR11在食管鳞癌组织和癌旁正常组织中阳性表达率分别为60.00%(60/100)和17.00%(17/100),SKA2在食管鳞癌组织和癌旁正常组织中阳性表达率分别为70.00%(70/100)和37.00%(37/100),食管鳞癌组织中PRR11和SKA2阳性表达率明显高于癌旁组织,差异有统计学意义(P<0.001);PRR11和SKA2蛋白在不同TNM分期、组织分化程度及淋巴结是否转移中的表达差异均有统计学意义(P<0.05);在不同性别、年龄、肿瘤直径、不同肌层浸润、脉管浸润中表达差异无统计学意义(P>0.05);Spearman相关分析结果显示PRR11和SKA2蛋白在食管鳞癌组织中呈明显正相关(r=0.725,P<0.001);患者的无进展生存期(progression-freesur v ival,PFS)和总生存期(overallsur vival,OS)在PRR11和SKA2阳性表达与阴性表达之间差异均具有统计学意义(P<0.05);Cox多因素回归分析结果显示TNM分期、组织分化程度、淋巴结转移、PRR11和SKA2表达是影响食管鳞癌预后的风险因素(均P<0.05)。结论:PRR11和SKA2过表达可促进食管鳞癌的发生发展,降低食管鳞癌患者的生存期,联合监测PRR11和SKA2的表达对食管鳞癌预后的判断具有一定的临床价值。