肝病患者外周血CD28+T细胞亚群变化

T细胞的特异性激活需要特异性T细胞受体(TCR)/CD3复合物信号,同时还需要共刺激信号.现已证实,在CD40-CD40-L和B7-CD28/CTLA-4(CD152)二条共刺激途径中,CD28,CTLA-4和ICOS与其配体B7家族分子(B7.1/CD80和B7.2/CD86)结合后所产生的共刺激信号(costimulatory signal)在T细胞活化过程中起重要作用[1].迄今,国内外开展有关肝移植排异[2]、原发性胆汁性肝硬变和原发性硬化性胆管炎等自身免疫疾病[3]、血吸虫等寄生虫感染[4]、HCV病毒感染[5,6]、肿瘤[7]、重症肝炎[8 ]中肝损伤T细胞的特异性激活共刺激研究,但乙肝病毒感染所致的肝损伤T细胞的特异性激活共刺激研究不多[9].鉴此,我们采用流式细胞分析仪,检测130例肝病患者外周血单个核细胞(Peripheral blood mononuclear cell,PBMC)中CD4+,CD8+和CD28+T细胞变化,兹报告如下.     

老年原发性非小细胞肺癌患者外周血T细胞膜型和可溶性CD28的表达

目的 检测老年原发性非小细胞肺癌(NSCLC)患者外周血T细胞膜型CD28(mCD28)及血清中可溶性CD28(sCD28)的表达,探讨该分子增龄性改变与老年人肺癌发生发展之间的联系.方法 应用四色免疫荧光标记流式细胞术和酶联免疫吸附法对63例老年人NSCLC(老年肺癌组)外周血的mCD28和sCD28进行检测,将其结果 与老年肺良性病变组(老年非癌组35例)、老年健康组30例、青年健康组30例、青年肺良性病变组(青年非癌组20例)及青年肺癌组(20例)进行对比分析,并研究其与老年人肺癌临床病理特征之间的关系. 结果 老年肺癌组外周血mCD28的表达量[(19.27±6.93)%]显著低于其余各组(F=184.25,P<0.01).其血清sCD28含量[(72.00±6.85)μg/L]则显著高于其余各组(F=365.40,P<0.01);老年健康组外周血mCD28的表达量((46.09±7.34)%]明显低于青年健康组和青年非癌组,其血清sCD28的含量[(35.84±5.02)μg/L]则明显高于青年健康组和青年非癌组;老年非癌组[(42.84±5.82)%、(39.38±6.02)μg/L]与老年健康组比较,两者表达差异均无统计学意义;Logistic回归分析显示,增龄、mCD28表达下调、sCD28含量增加均与肺癌的发生有统计学关联(OR值分别为2.432、0.876,1.113);老年肺癌组Ⅲ～Ⅳ期mCD28和sCD28的表达[(16.51±5.64)%、(75.03±5.98)μg/L]与Ⅰ～Ⅱ期表达[(24.41±8.24)%、(66.73±7.52)μg/L]比较,差异均有统计学意义(t值分别为4.497、4.794,均为P<0.01),而不同病理类型之间比较,差异均无统计学意义(F值分别0.609、0.302,均为P0.05). 结论 呈增龄性下调的mCD28和增龄性上调的sCD28,在老年人原发性肺癌的形成和进展过程中可能起重要作用.     

老年原发性非小细胞肺癌患者外周血T细胞膜型和可溶性CD28的表达

Objective To explore the expression of membrane form of CD28 (mCD28) on T lymphoeytes and the serum level of soluble CD28 (sCD28) in elderly patients with primary non-small cell lung cancer (NSCLC) in order to investigate the relationship between age-related changes of CD28 and the development of NSCLC in elderly patients. Methods 63 elderly patients with NSCLC, 35 elderly patients with lung benign lesion, 30 elderly healthy donors, 30 young healthy donors, 20 young patients with lung benign lesion and 20 young patients with NSCLC were enrolled in this study. The mCD28 on T cells and the serum level of sCD28 were measured by four-color flow eytometric assay and enzyme linked immunosorbent respectively, and the relationship between CD28 and clinical characteristics of NSCLC was analysed Results The expression of mCD28 was decreased and the serum level of sCD28 was increased in elderly patients with NSCLC compared with the other groups (F= 184.25, P<0. 01 ; F= 365.40, P<0.01). The expression of mCD28 was significantly lower and the level of sCD28 was significantly higher in elderly healthy donors than those in young healthy donors and young patients with lung benign lesion (P<0. 05). There were no significantly statistical differences in expression of mCD28 and level of sCD28 between elderly healthy donors and elderly patients with lung benign lesion [(42.84±5.82)% vs. (46.09±-7.34)%, (39.38±6.02)μg/L vs. (35.84±5.02)μg/L, P>0. 05]. Logistic regression analysis showed that aging (OR=2. 432), down-regulation of mCD28 expression (OR=0. 876) and up-regulation of sCD28 level (OR= 1. 113) were the risk factors for lung cancer. In the elderly patients with NSCLC, there were significant differences in mCD28 expression and sCD28 level between stages Ⅲ-Ⅳ and stages Ⅰ-Ⅱ [(16. 51± 5.64)% vs. (24.41±8.24)%, (75.03±5.98) μg/L vs. (66.73±7.52)μg/L; t=4.497,4.794, both P <0. 01]. However, there were no significantly statistical differences among different pathological types (F=0. 609, 0. 302, both P > 0. 05). Conclusions The down-regulation of mCD28 expression and up-regulation of sCD28 level with advancing age play an important role in the oncogenesis and development of primary non-small cell lung cancer in the elderly patients.     

老年原发性非小细胞肺癌患者外周血T细胞膜型和可溶性CD28的表达

Objective To explore the expression of membrane form of CD28 (mCD28) on T lymphoeytes and the serum level of soluble CD28 (sCD28) in elderly patients with primary non-small cell lung cancer (NSCLC) in order to investigate the relationship between age-related changes of CD28 and the development of NSCLC in elderly patients. Methods 63 elderly patients with NSCLC, 35 elderly patients with lung benign lesion, 30 elderly healthy donors, 30 young healthy donors, 20 young patients with lung benign lesion and 20 young patients with NSCLC were enrolled in this study. The mCD28 on T cells and the serum level of sCD28 were measured by four-color flow eytometric assay and enzyme linked immunosorbent respectively, and the relationship between CD28 and clinical characteristics of NSCLC was analysed Results The expression of mCD28 was decreased and the serum level of sCD28 was increased in elderly patients with NSCLC compared with the other groups (F= 184.25, P<0. 01 ; F= 365.40, P<0.01). The expression of mCD28 was significantly lower and the level of sCD28 was significantly higher in elderly healthy donors than those in young healthy donors and young patients with lung benign lesion (P<0. 05). There were no significantly statistical differences in expression of mCD28 and level of sCD28 between elderly healthy donors and elderly patients with lung benign lesion [(42.84±5.82)% vs. (46.09±-7.34)%, (39.38±6.02)μg/L vs. (35.84±5.02)μg/L, P>0. 05]. Logistic regression analysis showed that aging (OR=2. 432), down-regulation of mCD28 expression (OR=0. 876) and up-regulation of sCD28 level (OR= 1. 113) were the risk factors for lung cancer. In the elderly patients with NSCLC, there were significant differences in mCD28 expression and sCD28 level between stages Ⅲ-Ⅳ and stages Ⅰ-Ⅱ [(16. 51± 5.64)% vs. (24.41±8.24)%, (75.03±5.98) μg/L vs. (66.73±7.52)μg/L; t=4.497,4.794, both P <0. 01]. However, there were no significantly statistical differences among different pathological types (F=0. 609, 0. 302, both P > 0. 05). Conclusions The down-regulation of mCD28 expression and up-regulation of sCD28 level with advancing age play an important role in the oncogenesis and development of primary non-small cell lung cancer in the elderly patients.     

老年原发性非小细胞肺癌患者外周血T细胞膜型和可溶性CD28的表达

Objective To explore the expression of membrane form of CD28 (mCD28) on T lymphoeytes and the serum level of soluble CD28 (sCD28) in elderly patients with primary non-small cell lung cancer (NSCLC) in order to investigate the relationship between age-related changes of CD28 and the development of NSCLC in elderly patients. Methods 63 elderly patients with NSCLC, 35 elderly patients with lung benign lesion, 30 elderly healthy donors, 30 young healthy donors, 20 young patients with lung benign lesion and 20 young patients with NSCLC were enrolled in this study. The mCD28 on T cells and the serum level of sCD28 were measured by four-color flow eytometric assay and enzyme linked immunosorbent respectively, and the relationship between CD28 and clinical characteristics of NSCLC was analysed Results The expression of mCD28 was decreased and the serum level of sCD28 was increased in elderly patients with NSCLC compared with the other groups (F= 184.25, P<0. 01 ; F= 365.40, P<0.01). The expression of mCD28 was significantly lower and the level of sCD28 was significantly higher in elderly healthy donors than those in young healthy donors and young patients with lung benign lesion (P<0. 05). There were no significantly statistical differences in expression of mCD28 and level of sCD28 between elderly healthy donors and elderly patients with lung benign lesion [(42.84±5.82)% vs. (46.09±-7.34)%, (39.38±6.02)μg/L vs. (35.84±5.02)μg/L, P>0. 05]. Logistic regression analysis showed that aging (OR=2. 432), down-regulation of mCD28 expression (OR=0. 876) and up-regulation of sCD28 level (OR= 1. 113) were the risk factors for lung cancer. In the elderly patients with NSCLC, there were significant differences in mCD28 expression and sCD28 level between stages Ⅲ-Ⅳ and stages Ⅰ-Ⅱ [(16. 51± 5.64)% vs. (24.41±8.24)%, (75.03±5.98) μg/L vs. (66.73±7.52)μg/L; t=4.497,4.794, both P <0. 01]. However, there were no significantly statistical differences among different pathological types (F=0. 609, 0. 302, both P > 0. 05). Conclusions The down-regulation of mCD28 expression and up-regulation of sCD28 level with advancing age play an important role in the oncogenesis and development of primary non-small cell lung cancer in the elderly patients.     

老年原发性非小细胞肺癌患者外周血T细胞膜型和可溶性CD28的表达

Objective To explore the expression of membrane form of CD28 (mCD28) on T lymphoeytes and the serum level of soluble CD28 (sCD28) in elderly patients with primary non-small cell lung cancer (NSCLC) in order to investigate the relationship between age-related changes of CD28 and the development of NSCLC in elderly patients. Methods 63 elderly patients with NSCLC, 35 elderly patients with lung benign lesion, 30 elderly healthy donors, 30 young healthy donors, 20 young patients with lung benign lesion and 20 young patients with NSCLC were enrolled in this study. The mCD28 on T cells and the serum level of sCD28 were measured by four-color flow eytometric assay and enzyme linked immunosorbent respectively, and the relationship between CD28 and clinical characteristics of NSCLC was analysed Results The expression of mCD28 was decreased and the serum level of sCD28 was increased in elderly patients with NSCLC compared with the other groups (F= 184.25, P<0. 01 ; F= 365.40, P<0.01). The expression of mCD28 was significantly lower and the level of sCD28 was significantly higher in elderly healthy donors than those in young healthy donors and young patients with lung benign lesion (P<0. 05). There were no significantly statistical differences in expression of mCD28 and level of sCD28 between elderly healthy donors and elderly patients with lung benign lesion [(42.84±5.82)% vs. (46.09±-7.34)%, (39.38±6.02)μg/L vs. (35.84±5.02)μg/L, P>0. 05]. Logistic regression analysis showed that aging (OR=2. 432), down-regulation of mCD28 expression (OR=0. 876) and up-regulation of sCD28 level (OR= 1. 113) were the risk factors for lung cancer. In the elderly patients with NSCLC, there were significant differences in mCD28 expression and sCD28 level between stages Ⅲ-Ⅳ and stages Ⅰ-Ⅱ [(16. 51± 5.64)% vs. (24.41±8.24)%, (75.03±5.98) μg/L vs. (66.73±7.52)μg/L; t=4.497,4.794, both P <0. 01]. However, there were no significantly statistical differences among different pathological types (F=0. 609, 0. 302, both P > 0. 05). Conclusions The down-regulation of mCD28 expression and up-regulation of sCD28 level with advancing age play an important role in the oncogenesis and development of primary non-small cell lung cancer in the elderly patients.     

老年原发性非小细胞肺癌患者外周血T细胞膜型和可溶性CD28的表达

Objective To explore the expression of membrane form of CD28 (mCD28) on T lymphoeytes and the serum level of soluble CD28 (sCD28) in elderly patients with primary non-small cell lung cancer (NSCLC) in order to investigate the relationship between age-related changes of CD28 and the development of NSCLC in elderly patients. Methods 63 elderly patients with NSCLC, 35 elderly patients with lung benign lesion, 30 elderly healthy donors, 30 young healthy donors, 20 young patients with lung benign lesion and 20 young patients with NSCLC were enrolled in this study. The mCD28 on T cells and the serum level of sCD28 were measured by four-color flow eytometric assay and enzyme linked immunosorbent respectively, and the relationship between CD28 and clinical characteristics of NSCLC was analysed Results The expression of mCD28 was decreased and the serum level of sCD28 was increased in elderly patients with NSCLC compared with the other groups (F= 184.25, P<0. 01 ; F= 365.40, P<0.01). The expression of mCD28 was significantly lower and the level of sCD28 was significantly higher in elderly healthy donors than those in young healthy donors and young patients with lung benign lesion (P<0. 05). There were no significantly statistical differences in expression of mCD28 and level of sCD28 between elderly healthy donors and elderly patients with lung benign lesion [(42.84±5.82)% vs. (46.09±-7.34)%, (39.38±6.02)μg/L vs. (35.84±5.02)μg/L, P>0. 05]. Logistic regression analysis showed that aging (OR=2. 432), down-regulation of mCD28 expression (OR=0. 876) and up-regulation of sCD28 level (OR= 1. 113) were the risk factors for lung cancer. In the elderly patients with NSCLC, there were significant differences in mCD28 expression and sCD28 level between stages Ⅲ-Ⅳ and stages Ⅰ-Ⅱ [(16. 51± 5.64)% vs. (24.41±8.24)%, (75.03±5.98) μg/L vs. (66.73±7.52)μg/L; t=4.497,4.794, both P <0. 01]. However, there were no significantly statistical differences among different pathological types (F=0. 609, 0. 302, both P > 0. 05). Conclusions The down-regulation of mCD28 expression and up-regulation of sCD28 level with advancing age play an important role in the oncogenesis and development of primary non-small cell lung cancer in the elderly patients.     

老年原发性非小细胞肺癌患者外周血T细胞膜型和可溶性CD28的表达

Objective To explore the expression of membrane form of CD28 (mCD28) on T lymphoeytes and the serum level of soluble CD28 (sCD28) in elderly patients with primary non-small cell lung cancer (NSCLC) in order to investigate the relationship between age-related changes of CD28 and the development of NSCLC in elderly patients. Methods 63 elderly patients with NSCLC, 35 elderly patients with lung benign lesion, 30 elderly healthy donors, 30 young healthy donors, 20 young patients with lung benign lesion and 20 young patients with NSCLC were enrolled in this study. The mCD28 on T cells and the serum level of sCD28 were measured by four-color flow eytometric assay and enzyme linked immunosorbent respectively, and the relationship between CD28 and clinical characteristics of NSCLC was analysed Results The expression of mCD28 was decreased and the serum level of sCD28 was increased in elderly patients with NSCLC compared with the other groups (F= 184.25, P<0. 01 ; F= 365.40, P<0.01). The expression of mCD28 was significantly lower and the level of sCD28 was significantly higher in elderly healthy donors than those in young healthy donors and young patients with lung benign lesion (P<0. 05). There were no significantly statistical differences in expression of mCD28 and level of sCD28 between elderly healthy donors and elderly patients with lung benign lesion [(42.84±5.82)% vs. (46.09±-7.34)%, (39.38±6.02)μg/L vs. (35.84±5.02)μg/L, P>0. 05]. Logistic regression analysis showed that aging (OR=2. 432), down-regulation of mCD28 expression (OR=0. 876) and up-regulation of sCD28 level (OR= 1. 113) were the risk factors for lung cancer. In the elderly patients with NSCLC, there were significant differences in mCD28 expression and sCD28 level between stages Ⅲ-Ⅳ and stages Ⅰ-Ⅱ [(16. 51± 5.64)% vs. (24.41±8.24)%, (75.03±5.98) μg/L vs. (66.73±7.52)μg/L; t=4.497,4.794, both P <0. 01]. However, there were no significantly statistical differences among different pathological types (F=0. 609, 0. 302, both P > 0. 05). Conclusions The down-regulation of mCD28 expression and up-regulation of sCD28 level with advancing age play an important role in the oncogenesis and development of primary non-small cell lung cancer in the elderly patients.     

胃癌患者手术前后外周血CD28及T细胞亚群检测的临床意义

目的探讨胃癌患者手术前后外周血CD28和T淋巴细胞亚群的表达变化及其意义。方法采用流式细胞仪检测55例胃癌患者（胃癌组）手术前后外周血CD28和T淋巴细胞亚群变化,并与40例健康体检者（对照组）及41例胃良性肿瘤患者（良性组）比较。结果胃癌组术前CD3＋、CD4＋、CD4＋/CD8＋、CD8＋CD2＋8水平明显低于、CD8＋水平显著高于术后及对照组、良性组,（P〈0.05）;分期Ⅲ、Ⅳ患者CD3＋、CD4＋、CD4＋/CD8＋、CD8＋CD2＋8水平明显低于、CD8＋水平显著高于Ⅰ、Ⅱ期者（P〈0.05）;结论胃癌患者CD3＋、CD4＋、CD4＋/CD8＋、CD8＋CD2＋8表达水平低下,影响B7-CD28共刺激通路,使T细胞不能有效的清除肿瘤,手术切除肿瘤有助于改善患者的细胞免疫功能。     

老年原发性非小细胞肺癌患者外周血T细胞膜型和可溶性CD28的表达

Objective To explore the expression of membrane form of CD28 (mCD28) on T lymphoeytes and the serum level of soluble CD28 (sCD28) in elderly patients with primary non-small cell lung cancer (NSCLC) in order to investigate the relationship between age-related changes of CD28 and the development of NSCLC in elderly patients. Methods 63 elderly patients with NSCLC, 35 elderly patients with lung benign lesion, 30 elderly healthy donors, 30 young healthy donors, 20 young patients with lung benign lesion and 20 young patients with NSCLC were enrolled in this study. The mCD28 on T cells and the serum level of sCD28 were measured by four-color flow eytometric assay and enzyme linked immunosorbent respectively, and the relationship between CD28 and clinical characteristics of NSCLC was analysed Results The expression of mCD28 was decreased and the serum level of sCD28 was increased in elderly patients with NSCLC compared with the other groups (F= 184.25, P<0. 01 ; F= 365.40, P<0.01). The expression of mCD28 was significantly lower and the level of sCD28 was significantly higher in elderly healthy donors than those in young healthy donors and young patients with lung benign lesion (P<0. 05). There were no significantly statistical differences in expression of mCD28 and level of sCD28 between elderly healthy donors and elderly patients with lung benign lesion [(42.84±5.82)% vs. (46.09±-7.34)%, (39.38±6.02)μg/L vs. (35.84±5.02)μg/L, P>0. 05]. Logistic regression analysis showed that aging (OR=2. 432), down-regulation of mCD28 expression (OR=0. 876) and up-regulation of sCD28 level (OR= 1. 113) were the risk factors for lung cancer. In the elderly patients with NSCLC, there were significant differences in mCD28 expression and sCD28 level between stages Ⅲ-Ⅳ and stages Ⅰ-Ⅱ [(16. 51± 5.64)% vs. (24.41±8.24)%, (75.03±5.98) μg/L vs. (66.73±7.52)μg/L; t=4.497,4.794, both P <0. 01]. However, there were no significantly statistical differences among different pathological types (F=0. 609, 0. 302, both P > 0. 05). Conclusions The down-regulation of mCD28 expression and up-regulation of sCD28 level with advancing age play an important role in the oncogenesis and development of primary non-small cell lung cancer in the elderly patients.     

急性脑梗死患者外周血CD34+细胞水平的变化及临床意义

目的 测定急性脑梗死患者外周血CD34 +细胞水平,并探讨其临床意义. 方法 采用流式细胞仪测定发病72 h以内的急性期脑梗死患者(梗死组,45例)、有脑血管危险因素但无脑梗死发生的患者(高危组,27例)和健康体检者(对照组,20例)外周血CD34+细胞水平,分别记录梗死组患者神经功能缺损评分、梗死病灶体积以及颈动脉内中膜厚度. 结果 梗死组(0.034±0.012)％与高危组(0.047±0.009)％患者外周血CD34+细胞百分比均低于对照组(0.063±0.009)％,且梗死组低于高危组(均P＜0.05);梗死组轻度(0.047±0.009)％、中度(0.036±0.009)％、重度(0.022±0.007)％神经功能缺损评分患者外周血CD34+细胞百分比均较对照组降低(P＜0.05),重度组低于中度组,中度组低于轻度组(均P＜0.05);梗死组外周血CD34+细胞百分比均明显低于对照组(P＜0.05),其中大灶组低于中灶组,中灶组低于小灶组(均P＜0.05);(4)颈动脉内膜增厚组(0.043±0.010)％、颈动脉斑块组(0.036±0.010)％及颈动脉狭窄组(0.023±0.009)％,3组患者外周血CD34+细胞百分比均较对照组显著降低.其中颈动脉斑块及颈动脉狭窄组低于颈动脉斑块组,颈动脉斑块组低于颈动脉内膜增厚组(均P＜0.05). 结论 外周血CD34+细胞水平在脑缺血急性期明显降低,与脑梗死后神经功能缺损程度、梗死灶体积、颈动脉粥样硬化程度有关.     

急性脑梗死患者CD4+CD28-T淋巴细胞和肿瘤坏死因子-α变化的研究

目的探讨脑梗死患者外周血CD4 CD28-T淋巴细胞亚群和血清中肿瘤坏死因子(TNF)-α在脑梗死发病中的作用及两者的相关关系。方法2006年2月至9月,在中国医科大学附属盛京医院神经内科运用免疫荧光标记技术和流式细胞仪分析以及双抗体夹心酶联免疫吸附试验(ELISA)法,对30例急性脑梗死患者(观察组)和30名健康志愿者(对照组)外周血CD4 CD28-T淋巴细胞和血清中TNF-α质量浓度进行检测,并分析两者的相关性。结果急性脑梗死患者外周血中CD4 CD28-T淋巴细胞和血清中TNF-α的质量浓度均比对照组显著增高,且两者具有相关性(r=0.51,P<0.05)。结论急性脑梗死时,患者外周血中CD4 CD28-T淋巴细胞和血清中TNF-α的质量浓度均增高,两者相互作用,参与了急性脑梗死的异常炎性反应,在脑梗死发病中起重要作用。     

急性白血病患者调节性T细胞的检测及临床意义

目的:探讨急性白血病患者外周血中CD4+CD25+调节性T细胞(Treg)的变化及意义。方法:采用流式细胞技术及ELISA方法检测56例急性白血病患者外周血中CD4+CD25+ Treg、IL-10的变化,并与健康对照组进行比较。结果:急性白血病患者外周血中CD4+CD25+/CD4+CD25high Treg占(23.85±6.85)%及(5.21±1.20)%,明显高于健康对照组(P0.01);56例急性白血病患者血清中IL-10水平为(74.4±21.2)pg/ml,明显高于正常对照组(24.6±8.7)pg/ml(P0.01),与CD4+CD25+/CD4+CD25 high Treg存在正相关(r=0.253/r=0.511,P0.05)。结论:急性白血病患者外周血CD4+CD25+/CD4+CD25 high Treg水平明显升高,与急性白血病患者免疫逃逸密切相关。     

强直性脊柱炎患者外周血CD4+CD25+调节性T细胞的研究

目的 观察强直性脊柱炎(AS)患者外周血CD4+CD25调节性T细胞(Treg)的数量、功能及肿瘤坏死因子(TNF)-a 抑制剂治疗的影响.方法 活动性AS患者25例,10例给予etanercept治疗12周,健康对照21名,分离外周血单个核细胞(PBMC),流式细胞术检测CD4+CD25high T细胞比例;实时定量聚合酶链反应检测FOXP3 mRNA表达;免疫磁珠法去除CD25+细胞,可溶性噻唑盐(WST-1)法检测T细胞增殖.结果 活动性AS组CD4+CD25high T细胞比例与对照组差异尤统计学意义,但FOXP3 mRNA表达明显低于对照组(P＜0.01),并与C反应蛋白(CRP)呈负相关(P＜0.01).两组的CD4+CD25+细胞体外均能抑制T细胞增殖(P均＜0.01). Etanercept治疗明显增加CD4+CD25highT细胞比例和FOXP3 mRNA表达(P均＜0.01),与CRP降低呈负相关(P＜0.05;P＜0.01).结论 AS患者外周血表达FOXP3的CD4+CD25+Treg细胞异常,可能参与AS发生和发展;Etanercept治疗上调Treg细胞,可能是抗TNF-α治疗的一个机制.     

肺癌患者外周血CD_4~＋CD_（25）~＋CD_（127）-调节性T细胞水平变化及其临床意义

目的通过检测肺癌患者外周血CD4＋CD2＋5CD127-调节性T（CD4＋CD2＋5CD127-Treg）细胞及相关免疫细胞水平和血浆IL-10、IFN-γ水平,探讨肺癌患者的细胞免疫功能异常及其临床意义。方法采用流式细胞仪（FCM）和酶联免疫吸附（ELISA）法分别检测45例原发性肺癌患者、14例肺部良性病变患者和20例健康者外周血中CD4＋CD2＋5CD127-Treg细胞及相关免疫细胞水平和血浆IL-10、IFN-γ水平。结果与肺部良性病变患者和健康者比较,肺癌患者外周血CD4＋CD2＋5CD127-Treg细胞水平及CD4＋CD28-T细胞水平升高,CD4＋、CD8＋CD2＋8-T细胞、CD5＋6NK细胞水平及CD4＋/CD8＋值降低,血浆IL-10水平升高,IFN-γ水平降低。肺癌患者外周血CD4＋CD2＋5CD127-Treg细胞水平与血浆IL-10水平呈正相关,与血浆IFN-γ水平呈负相关。CD4＋CD2＋5CD127-Treg细胞、CD4＋CD28-T细胞、CD5＋6NK细胞水平及血浆IL-10、IFN-γ水平与临床分期有关。结论 CD4＋CD2＋5CD127-Treg细胞在肺癌发生、发展过程中可能起一定作用。     

CD4+CD25+调节性T细胞在系统性红斑狼疮患者外周血的表达

目的 检测系统性红斑狼疮(SLE)患者外周血单个核细胞(PBMC)中CD4+CD25high细胞占CD4+T细胞的比例及FoXP3基因mRNA表达,探讨其在SLE发病中的意义.方法 选择SLE患者77例,正常对照25名.流式细胞法分析CD4+CD25high细胞占CD4+T细胞的比例;实时定量聚合酶链反应(PCR)方法检测FOXP3 mRNA表达.结果 活动期SLE患者CD4+CD25high百分率下降,FOXP3基因表达下降;活动期SLE患者FOXP3基因表达与SLEDAI呈负相关,与红细胞沉降率、补体无相关.结论 CD4+CD25high百分率下降,FOXP3基因表达降低提示调节性T淋巴细胞的数量减低及功能下降在SLE的发病中可能起到重要作用.     

肝病患者外周血中CD4+ CD25+ T细胞的变化与意义

为了探讨肝病发病机制中CD4＋ CD25＋ T细胞的作用,本文采用全血裂解的方法得到单个核细胞,用流式细胞仪检测慢乙肝、肝炎肝硬化、重型肝炎患者外周血中CD4＋ CD25＋ T细胞的变化.实验测得重型肝炎、慢乙肝、肝硬化患者外周血中CD4＋ CD25＋ T细胞分别为7.53%、7.39%和6.47%,高于正常对照组的4.06%（P＜0.01或0.05）;而重型肝炎、慢乙肝、肝硬化患者外周血中CD4＋ T细胞分别为30.44%、38.12%和39.63%,均低于正常对照组的45.07%（P＜0.01或0.05）.结果表明CD4＋ CD25＋ T和CD4＋ T细胞的变化可能与这些肝病的发生与发展有关.     

成人隐匿性自身免疫性糖尿病患者CD4+CD25+T细胞亚群的变化

目的探讨成人隐匿性自身免疫性糖尿病(LADA)患者外周血免疫调节性CD4 CD25 T细胞亚群的变化及其意义。方法以流式细胞仪检测32例LADA、16例T1DM、25例T2DM及27例正常对照外周血CD4 CD25 、CD3 CD8 T细胞。结果①LADA组外周血CD4 CD25 T细胞低于而CD3 CD8 T细胞高于T1DM组、T2DM组和正常对照组;②LADA患者CD3 CD8 T细胞比例与起病年龄、FC-P、2hC-P呈负相关。结论LADA患者免疫调节性CD4 CD25 T细胞减少,不能有效维持对胰岛自身抗原的耐受;细胞毒性CD3 CD8 T细胞增多从而破坏胰岛β细胞,导致自身免疫性糖尿病的发生和发展。     

急性冠状动脉综合征患者外周血CD4+T细胞及CD28null/CD28+亚型活化后Kv1.3钾通道的表达和意义

目的 研究急性冠状动脉综合征(ACS)患者外周血中CD4+T细胞及CD28null/CD28+亚型活化前后Kv1.3钾通道数目的 变化以及Kv1.3钾通道阻滞剂对CD4+T细胞活化表达的影响,探讨Kv1.3钾通道在不稳定斑块中的意义.方法 用免疫磁珠法分离出27例ACS患者外周血中的CD4+T细胞,其中12例进一步分出亚型CD4+CD28null和CD4+CD28+T细胞,采用全细胞膜片钳技术记录细胞活化前及经CD3抗体活化72 h后的Kv1.3钾电流.CD4+T细胞活化时分别加入终浓度为0.1、1、10 nmol/L特异性Kv1.3钾通道阻滞剂rMargatoxin(rMgTX),共同培养72 h后用反转录-PER法检测干扰素-γ、肿瘤坏死因子(TNF)-α及颗粒酶B mRNA的表达.结果 活化后CD4+、CD4+CD28null、CD4+CD28+T细胞的Kv1.3钾通道的峰电流均明显增加,细胞平均通道数分别增加约90%、60%、80%[活化前后每个细胞的通道数分别为(402±88)个比(752±275)个、(553±328)个比(874±400)个、(392±133)个比(716±251)个,均P<0.05].活化前CD4+CD28nullT细胞Kv1.3钾通道的平均数目比CD4+CD28+T细胞多约40%(P<0.05),活化后两者差异无统计学意义(P=0.102).不同浓度的rMgTX均下调CD4+T细胞活化后干扰素-γ、TNF-α、颗粒酶B mRNA的表达,各浓度组间干扰素-γ、TNF-α、颗粒酶B mRNA的表达差异均有统计学意义(均P<0.01),浓度越高,各mRNA表达越低.结论 ACS患者外周血CD4+T细胞及CD28null/CD28+亚型活化后Kv1.3钾通道表达增加,特异性Kv1.3通道阻滞剂rMgTX呈浓度依赖性地抑制CD4+T细胞活化时干扰素-γ、TNF-α及颗粒酶B mRNA的表达,提示CD4+T细胞特别是CD4+CD28nullT细胞的Kv1.3钾通道可作为预防动脉粥样斑块不稳定的潜在治疗靶点.