CD4+CD25highT细胞在小细胞肺癌患者外周血中的表达及意义

目的探讨CD4+CD25high调节(抑制)性T细胞在小细胞肺癌患者外周血中的表达情况及其意义.方法应用流式细胞技术检测40例初诊小细胞肺癌患者,18例CE及CAP方案交替化疗后完全缓解的小细胞肺癌患者外周血中的CD4+CDhighT细胞,计算它们占CD4+T细胞的比率.结果初诊小细胞肺癌患者CD4+CD25highT细胞占CD4+T细胞的比率(6.69±2.32)%,高于健康对照组(4.13±1.25)%(P＜0.01);经化疗后完全缓解的小细胞肺癌患者外周血CD4+CD25highT细胞占CD4+T细胞的比率与初诊时相比无明显变化.结论小细胞肺癌患者外周血中CD4+CD25high调节T细胞占CD4+T细胞的比率增高,它们对小细胞肺癌患者具有免疫抑制作用.     

消化道恶性肿瘤患者外周血CD4＋CD25^high调节性T细胞分析——附117例检测报告

目的:探讨消化道恶性肿瘤患者外周血CD4+CD25high 调节性T细胞(regulatory T cell,Treg)占CD4+T细胞的比例及其临床意义.方法:采用流式细胞术检测117例消化道恶性肿瘤患者(消化道恶性肿瘤组)与15名健康体检者(对照组)的外周血CD4+CD25highTreg水平,并进行比较.结果:消化道恶性肿瘤组外周血CD4+CD25highTreg占CD4+T细胞的百分率为(4.4±1.6)%,明显高于对照组的(2.0±1.0)%(P＜0.05);Ⅳ期消化道恶性肿瘤外周血CD4+CD25hgh Treg占CD4+T细胞的百分率为(5.5±1.4)%,明显高于Ⅰ～Ⅲ期消化道恶性肿瘤的(3.8±1.4)%(P＜0.05).结论:消化道恶性肿瘤患者外周血CD4+CD25high曲Treg细胞比例明显升高,可作为检测这类患者免疫状态的指标.     

不同治疗方法对非小细胞肺癌外周血CD4+CD25+T细胞的影响

目的 探讨不同治疗方法对非小细胞肺癌外周血CD4+CD25+T细胞的影响.方法 50例非小细胞肺癌随机分为联合治疗组和单纯化疗组各25例,联合治疗组给予化疗同时,联合香菇多糖治疗;单纯化疗组只给予化疗.检测治疗前和治疗8 d后外周血CD4+CD25+T细胞水平.以健康人30例作为对照组.结果 ①肺腺癌患者外周血CD4+CD25+T细胞水平显著高于其他类型肺癌(P＜0.05);Ⅲ+Ⅳ期水平显著高于Ⅰ+Ⅱ期(P＜0.05);但CD4+ CD25+T细胞比值升高与年龄性别无关(P＞0.05).②肺癌患者治疗前外周血CD4+CD25+T细胞水平显著高于健康对照组(P＜0.05).③治疗前联合治疗组与单纯化疗组外周血CD4+CD25+T细胞水平差异无统计学显著性意义(P＞0.05);治疗后单纯化疗组外周血CD4+ CD25+T细胞水平显著高于联合治疗组(P＜0.05);联合治疗组治疗前外周血CD4+ CD25+T细胞水平显著高于治疗后(P＜0.05);单纯化疗组治疗前外周血CD4+CD25+T细胞水平显著高于治疗后(P＜0.05).结论 肺癌患者外周血CD4+CD25+T细胞水平较健康人明显升高;化疗联合生物治疗较单纯化疗外周血CD4+CD25+T细胞水平降低更明显,更利于提高机体免疫力.     

恶性肿瘤患者伽玛刀治疗前后CD4^＋CD25^＋Treg细胞的变化

目的探讨恶性肿1瘤患者接受伽玛刀治疗前后其外周血CD4+CD25+调节性T细胞(Treg)比例变化。方法我们通过流式细胞仪检测恶性肿瘤患者伽玛刀术前及术后7~10天,外周血CD4+CD25+调节性T细胞的比例变化。结果恶性肿瘤患者伽玛刀术前及术后7~10天,外周血CD4+CD25+调节性T细胞的比例分别为28.55±5.2%,28.35±4.18%,没有明显差异。结论伽玛刀术后7~10天,恶性肿瘤患者外周血CD4+CD25+调节性T细胞的比例没有明显变化,提示伽玛刀对肿瘤治疗早期患者细胞免疫功能没有明显改变。     

外周血中CD4~+CD25~+与CD8~+CD28~-调节性T细胞与Graves病的关系研究

目的分析Graves病(GD)患者外周血中CD4+CD25+和CD8+CD28-调节性T(Tr)细胞的变化。方法选择该院内分泌科门诊或住院部43例GD患者为研究对象,其中内分泌科门诊确诊的19例GD患者为试验初发组。接受治疗且甲状腺功能恢复正常的24例GD患者为治疗缓解组;选择同期健康体检者20例为健康对照组。采用流式细胞术检测3组外周血中CD4+CD25+和CD8+CD28-Tr细胞水平。结果试验初发组外周血CD4+CD25+Tr细胞水平为(4.56±4.14)%,明显低于健康对照组的(8.84±4.45)%,差异有统计学意义(P0.05),CD8+CD28-Tr细胞水平为(14.95±5.38)%,与健康对照组的(10.65±6.37)%比较,差异无统计学意义(P0.05)。治疗缓解组外周血中CD4+CD25+Tr细胞水平为(6.99±6.35)%,与健康对照组比较,差异无统计学意义(P0.05),但其CD8+CD28-Tr细胞水平为(20.48±6.07)%,高于健康对照组,差异有统计学意义(P0.05)。结论 CD4+CD25+Tr细胞水平可能与GD发病有关,CD8+CD28-Tr细胞可能与GD病程发展有关。     

CD4+CD25highTr细胞在非小细胞肺癌中的表达及意义

目的:比较非小细胞肺癌(NSCLC)患者外周血和肿瘤浸润淋巴细胞(TIL)中CD4+CD25highTr细胞比例的变化与肺癌分期的关系,探讨患者局部肿瘤微环境和全身免疫状态与CD4+CD25+Tr细胞的关系.方法:分离NSCLC患者和健康人外周血单个核细胞(PBMC),取NSCLC患者新鲜肺癌组织抽提TIL.用流式细胞仪检测CD4+T细胞和CD4+CD25highTr细胞.结果:NSCLC患者PBMC中CD4+CD25highTr/CD4+T细胞比例较健康人显著升高(P<0.01).Ⅱ～ⅢA期NSCLC患者PBMc和TIL中CD4+CD25highTr/CD4+T细胞比例较Ⅰ期患者显著升高.结论:CD4+CD25highTr细胞可能参与肿瘤产生的宿主免疫抑制反应及其发展.     

溃疡性结肠炎患者外周血CD4+CD25+Foxp3+T细胞的表达

目的:探讨溃疡性结肠炎(ulcerative coitis,UC)患者外周血CD4+CD25+ Foxp3+T细胞的表达及意义.方法:采用流式细胞术检测UC患者22例及健康对照组20例外周血CD4+ CD25+ Foxp3+在T淋巴细胞的单独或联合表达比例.结果:UC患者外周血T淋巴细胞表达CD4+的比例为(34.76±5.40)%,与健康对照组的(33.23±11.38)%比较无差异(P>0.05);CD4+CD25+T细胞占CD4+T细胞的比例为(8.27±1.46)%,显著低于健康对照组的(11.4±2.17)%(P<0.05);CD4+CD25+Foxp3+T细胞占CD4+T细胞比例为(0.87±0.25)%,显著低于健康对照组的(1.55±0.55)%(P<0.05).结论:UC患者CD4+CD25+T细胞及CD4+CD25+Foxp3+T细胞明显减少,可能打破了自身免疫耐受,发生了针对肠道抗原的自身免疫反应,参与了UC的发病.     

调节性T细胞的新标记CD4+CD25+CD127low/-在类风湿性关节炎中的应用

目的 选择用膜表面标志CD4+CD25+CD127low/-作为检测调节性T(Treg)细胞的指标,探讨其在类风湿性关节炎(RA)中的可能临床应用价值.方法 用流式细胞术检测正常人及RA患者外周血CD4+CD25high、CD4+ CD25+ FoxP3+ 和CD4+CD25+CD127low/- T细胞占CD4+T细胞的比例,分析CD4+CD25+CD127low/-与CD4+ CD25+ FoxP3+ 2群细胞比例之间的相关性.结果 正常人及RA患者外周血CD4+CD25+CD127low/-T细胞比例与CD4+ CD25+ FoxP3+T细胞比例之间呈显著正相关(r=0.694、0.768,P均＜0.01).RA患者外周血CD4+CD25high、CD4+ CD25+ FoxP3+及CD4+CD25+CD127low/-T细胞比例均显著低于正常人(P均＜0.01).结论 膜表面标志CD4+CD25+CD127low/-可以用来鉴定Treg细胞,RA患者外周血CD4+CD25+CD127low/-T细胞的明显减少可能是RA的发病机制之一.     

外周血CD4~+CD25~+CD127~(low)调节性T细胞在恶性肿瘤患者免疫功能评估中的作用

目的观察恶性肿瘤患者外周血CD4+CD25+CD127low调节性T细胞(CD4+CD25+CD127lowTreg)的数量变化,探讨外周血CD4+CD25+CD127lowTreg检测在恶性肿瘤患者免疫功能评估中的作用。方法以35例正常人作为对照组,采用流式细胞术检测74例肿瘤患者外周血CD4+CD25+CD127lowTreg在CD4+T细胞的比例,分析不同TNM分期恶性肿瘤患者外周血中CD4+CD25+CD127lowTreg占CD4+T细胞的百分比,采用实时荧光定量RT-PCR技术检测PBMC转录因子Foxp3表达水平。结果肿瘤患者外周血中CD4+CD25+CD127low Treg占CD4+T细胞百分比为(6.19±1.82)%,明显高于对照组(3.12±1.16)%,差异具有统计学意义(P0.05)。其中Ⅲ、Ⅳ期患者外周血CD4+CD25+CD127lowTreg百分比分别为(6.08±2.14)%、(6.88±2.65)%,明显高于Ⅰ-Ⅱ期患者(5.65±1.86)%,P0.05;病理分型为低分化者CD4+CD25+CD127lowTreg百分比为(6.72±2.60)%,明显高于高分化者(5.94±2.11)%,P0.05;有淋巴结转移者CD4+CD25+CD127lowTreg百分比为(6.95±3.12)%,明显高于无淋巴结转移者(5.02±2.09)%,P0.05。结论恶性肿瘤患者外周血CD4+CD25+CD127lowTreg占CD4+T细胞的比例明显升高,监测CD4+CD25+CD127lowTreg有利于评估肿瘤患者的免疫功能和辅助判断肿瘤患者的病情进展及预后。     

应用TGF-β_1从rhG-CSF动员的外周血采集物中诱导产生CD4~+ CD25~+调节性T细胞

目的探讨在人重组的粒细胞集落刺激因子(rhG-CSF)动员的外周血单个核细胞中诱导产生CD4+CD25+调节性T细胞可行性及其表型和功能。方法收集本院外周血干细胞移植术供者rhG-CSF动员前外周血(PB组)和动员后的外周血采集物(G-PB组)各10例,用免疫磁珠法分选出CD4+CD25?T细胞,并用转化生长因子β1(TGF-β1)进行诱导,分别应用流式细胞术、RT-PCR和细胞增殖、抑制试验测定诱导后细胞的CD25、Foxp3表达和免疫抑制功能,比较2组之间CD4+CD25+T细胞转化率、抑制功能的差异。结果1)G-PB和PB来源的CD4+CD25?T细胞在抗-CD3 M cAb和TGF-β1作用下CD25+分子表达不同,分别为:(77.9±2.3)%和(65.7±4.2)%,差异有统计学意义(P<0.05);2)TGF-β1诱导产生的CD4+CD25+T细胞高表达Foxp3;3)PB、G-PB来源的TGF-β1诱导产生的CD4+CD25+T细胞具有免疫抑制功能,cpm值分别为:11 739±352和18 732±437(P<0.05)。结论G-CSF动员的外周血可作为CD4+CD25+调节性T细胞的重要来源。     

Human CD4(+)CD25(+) regulatory,contact-dependent T cells induce interleukin 10-producing,contact-independent type 1-like regulatory T cells [corrected

It has been recently demonstrated that regulatory CD4(+)CD25(+) CD45RO(+) T cells are present in the peripheral blood of healthy adults and exert regulatory function similar to their rodent counterparts. It remains difficult to understand how the small fraction of these T cells that regulate via direct cell-to-cell contact and not via secretion of immunosuppressive cytokines could mediate strong immune suppression. Here we show that human CD4(+)CD25(+) T cells induce long-lasting anergy and production of interleukin (IL)-10 in CD4(+)CD25(-) T cells. These anergized CD4(+)CD25(-) T cells then suppress proliferation of syngenic CD4(+) T cells via IL-10 but independent of direct cell contact, similar to the so-called type 1 regulatory T (Tr1) cells. This 'catalytic' function of CD4(+)CD25(+) T cells to induce Tr1-like cells helps to explain their central role for the maintenance of immune homeostasis.     

CD4+CD25+调节性T细胞在特发性血小板减少性紫癜患者中的变化

目的探讨CD4^＋CD25^＋T细胞在特发性血小板减少性紫癜（ITP）患者发病机制中的作用。方法应用流式细胞术检测ITP患者外周血CD4^＋CD25^＋T细胞、CD4^＋CD25^highT细胞、CD4^＋FOXP3^＋T细胞、CD4^＋CD25^＋FOXP3^＋T细胞的数量；实时荧光定量PCR检测外周血FOXP3 mRNA的表达水平。将ITP患者和正常人CD4^＋CD25^highT细胞与自身CD4^＋CD25^-T细胞混合培养，检测CD4^＋CD25^high T细胞免疫抑制功能。结果ITP患者外周血中CD4^＋CD25^＋T细胞约占CD4^＋T细胞的（15．64±5．82）％，明显高于正常对照组（9．30±3．95）％（P〈0．01），CD4^＋CD25^high T细胞比例为（1．53±0．66）％，与对照组[（1．36±0．55）％]比较差异无统计学意义（P〉0．05）；CD4^＋FOXP3^＋T细胞和CD4^＋CD25^＋FOXP3^＋T细胞分别为（1．82±1．42）％和（1．25±0．94）％，均明显低于对照组[（3．90±1．37）％和（2．65±0．92）％]（P值均〈0．01）。ITP患者外周血FOXP3 mRNA表达水平较正常人明显下调（P〈0．01），CD4^＋CD25^high T细胞的抑制活性较正常人减弱（P〈0．01）。结论ITP患者中CD4^＋CD25^＋T细胞FOXP3表达水平降低，抑制活性减弱。     

沙利度胺对多发性骨髓瘤患者CD4^＋CD25^＋调节性T细胞作用的临床研究

本研究探讨沙利度胺治疗前后多发性骨髓瘤（MM）患者CD4^＋CD25^＋调节性T细胞的比例及变化规律，为有效的免疫治疗提供理论依据。采用流式细胞术检测MM患者外周血CD3、CD4、CD8、NK及CD4^＋CD25^＋Treg细胞的比例；采用成组设计的两样本均数比较的t检验进行统计学分析，以P〈0．05为检验水准。结果表明：MM患者治疗前CD4^＋CD25^＋highT比例较正常人明显升高（P〉0．01），沙利度胺治疗有效患者的CD4^＋CD25^＋highT比例较治疗前明显降低（P〈0．01），治疗无效者Treg比例无显著变化（P〉0．05）。16例经化疗完全缓解，CD4^＋CD25^＋highT比例为6．91±1．12％，较治疗前升高，但无显著性差异（P〉0．05）。沙利度胺治疗有效者CD3^＋T、CD4^＋T、NK细胞比例及CD4／CD8比值较治疗前明显升高（P〉0．05或0．01），CD8^＋T治疗前后无显著变化（P〉0．05）。结论：CD4^＋CD25^＋Treg细胞的免疫抑制作用可能是MM免疫逃逸的重要机制，下调MM患者CD4^＋CD25^＋Treg可能是沙利度胺治疗MM有效的机制之一。     

Human CD25+CD4+ T suppressor cell clones produce transforming growth factor beta,but not interleukin 10, and are distinct from type 1 T regulatory cells

T regulatory (Tr) cells are essential for the induction of peripheral tolerance. Several types of Tr cells exist, including CD4(+) T cells which express CD25 constitutively and suppress immune responses via direct cell-to-cell interactions, and type 1 T regulatory (Tr1) cells, which function via secretion of interleukin (IL)-10 and transforming growth factor (TGF)-beta. The relationship between CD25(+)CD4(+) T cells and Tr1 cells remains unclear. Here, we demonstrate at the clonal level that Tr1 and CD25(+)CD4(+) T cells are two distinct subsets of regulatory cells with different cytokine production profiles. Furthermore, CD25(-)CD4(+) T cells can be rendered anergic by IL-10 and differentiated into Tr1 cells in the absence of CD25(+)CD4(+) T cells. Cloned human CD25(+)CD4(+) T cell populations are heterogeneous and only a subset of clones continues to express high levels of CD25 and is suppressive. The intensity of CD25, cytotoxic T lymphocyte antigen (CTLA)-4, and glucocorticoid-induced tumor necrosis factor (TNF) receptor expression correlates with the suppressive capacity of the T cell clones. None of the CD25(+)CD4(+) T cell clones with suppressive function produce IL-10, but all produce TGF-beta. Suppression mediated by CD25(+)CD4(+) T cell clones is partially dependent on TGF-beta, but not on constitutive high expression of CD25. Together these data indicate that naturally occurring human CD25(+)CD4(+) T cells are distinct from IL-10-producing Tr1 cells.     

CD4＋CD25nt/hiCD127lo调节性T细胞在急性白血病患者外周血的表达及意义

目的·探讨CD4＋CD25nt/hiCD127lo调节性T细胞（Tregs）在急性白血病（AL）患者外周血中的表达及其临床意义。方法采用流式细胞术分别检测34例AL初诊（A组）、30例经化疗完全缓解（cR）（B组）患者以及20名健康对照者（c组）外周血CD4＋CD25nt/hiCD127loTregs的比例。结果AL患者中A组外周血CD4＋CD25nt/hiCD127loTregs比例显著高于C组（7.31±3．37）％vs（3．24±O．58）％,P〈O．01】。B组CD4＋CD25nt/hiCD127loTregs比例较A组及C组均明显增加【（11．32±5．87）％vs（7．31±3．37）％,P〈O．01;（11．32±5．87）％vs（3．24±O．58）％,P〈O．O1】。结论初治AL患者外周血CD4＋CD25nt/hiCD127loTregs细胞比例显著增加,说明Tregs细胞的免疫抑制作用可能参与了AL的发病。AL缓解后Tregs细胞比例增加,可能与AL患者化疗后免疫功能进一步抑制以及化疗药物相关。     

Inverse correlation between CD4+ CD25high CD127low/- regulatory T-cells and serum immunoglobulin A in patients with new-onset ankylosing spondylitis

This study investigated the role of regulatory T (T(reg)) cells in patients with new-onset, treatment-na?ve ankylosing spondylitis (AS). Levels of CD4(+)CD25(high)CD127(low/-) T(reg) cells in the peripheral blood of 14 AS patients and 18 age-matched healthy volunteers were investigated by flow cytometry and correlations with serum levels of immunoglobulin A (IgA) and AS activity, as assessed by the Bath AS Disease Activity Index (BASDAI), were analysed. The number of peripheral blood CD4(+)CD25(high)CD127(low/-) T(reg) cells in AS patients was found to be significantly lower than in healthy controls and was inversely correlated with serum IgA levels. There was no significant correlation between CD4(+)CD25(high)CD127(low/-) T(reg) cell numbers and BASDAI scores. It is concluded that CD4(+)CD25(high)CD127(low/-) T(reg) cells may play a role in the pathogenesis and activity of AS.     

Human cd25(+)cd4(+) t regulatory cells suppress naive and memory T cell proliferation and can be expanded in vitro without loss of function

Active suppression by T regulatory (Tr) cells plays an important role in the downregulation of T cell responses to foreign and self-antigens. Mouse CD4(+) Tr cells that express CD25 possess remarkable suppressive activity in vitro and in autoimmune disease models in vivo. Thus far, the existence of a similar subset of CD25(+)CD4(+) Tr cells in humans has not been reported. Here we show that human CD25(+)CD4(+) Tr cells isolated from peripheral blood failed to proliferate and displayed reduced expression of CD40 ligand (CD40L), in response to T cell receptor-mediated polyclonal activation, but strongly upregulated cytotoxic T lymphocyte-associated antigen (CTLA)-4. Human CD25(+)CD4(+) Tr cells also did not proliferate in response to allogeneic antigen-presenting cells, but they produced interleukin (IL)-10, transforming growth factor (TGF)-beta, low levels of interferon (IFN)-gamma, and no IL-4 or IL-2. Importantly, CD25(+)CD4(+) Tr cells strongly inhibited the proliferative responses of both naive and memory CD4(+) T cells to alloantigens, but neither IL-10, TGF-beta, nor CTLA-4 seemed to be directly required for their suppressive effects. CD25(+)CD4(+) Tr cells could be expanded in vitro in the presence of IL-2 and allogeneic feeder cells and maintained their suppressive capacities. These findings that CD25(+)CD4(+) Tr cells with immunosuppressive effects can be isolated from peripheral blood and expanded in vitro without loss of function represent a major advance towards the therapeutic use of these cells in T cell-mediated diseases.     

再生障碍性贫血患者CD4+ CD25+ CD127low调节性T细胞及Notch1表达水平的变化

目的 测定再生障碍性贫血(AA)患者治疗前后外周血CD4+ CD25+ CD127low调节性T细胞(Treg)的数量及叉头翼状螺旋转录因子(FOXP3)mRNA、Notch1 mRNA的表达水平,探讨Treg在AA发病中的作用及其机制.方法 流式细胞术检测29例初发AA患者、14例环孢素(CsA)治疗后恢复期及11例治疗后未恢复期患者外周血中CD4+ CD25+ CD127low T细胞、CD4+ CD25+ T细胞的数量,并与正常对照比较;采用RT-PCR检测FOXP3 mRNA和Notch1 mRNA的表达水平,分析两者相关性.结果AA初发组及治疗后未恢复组患者外周血中活化CD4+ CD25+ T细胞占CD4+ T细胞比例分别为(4.3±0.7)%、(4.2±0.6)%,明显高于正常对照组[(2.4±0.8)%](P＜0.05).CsA治疗后恢复组患者比例下降为(2.6±0.7)%(P＜0.05),与对照组比较差异无统计学意义.AA初发组及未恢复组CD4+ CD25+ CD127low T细胞在CD4+ T细胞中的比例分别为(2.4±1.2)%、(2.5±1.1)%,较正常对照组[(7.1±2.7)%]及恢复组[(5.3±1.0)%]明显降低(P值均＜0.01);但后两组比较差异无统计学意义.AA初发组患者FOXP3 mRNA及Notch1 mRNA分别为(0.260±0.011)和(0.018±0.005),较正常对照[(1.307±0.011)和(0.308±0.028)]表达明显下调(P值均＜0.01),治疗后分别为(1.287±0.012)和(0.281±0.013),表达较初发组显著提高(P值均＜0.01),与对照组比较差异无统计学意义(P值均＞0.05).AA患者CD4+ CD25+ CD127low T细胞、FOXP3均与Notch1表达呈正相关性(P值均＜0.01).结论AA患者外周血CD4+ CD25+ CD127low Treg减少,其抑制作用减弱,导致自身反应性T细胞过度活化,抑制造血.其作用机制之一可能与靶细胞表面Notch1分子表达降低相关.     

哮喘患儿外周血CD4^＋CD25^＋调节性T细胞的变化及其与过敏体质和IgE水平的关系

目的探讨哮喘患儿外周血CD4^＋CD25^＋调节性T细胞（Tr）的变化及其与过敏体质和IgE水平的关系。方法应用流式细胞术检测70例哮喘患儿的Tr细胞数变化,采用酶联免疫法（ELISA）检测血清中IgE含量。结果急性发作期组患儿外周血Tr水平[（6．17±1．72）％]明显低于缓解期组患儿[（7．56±1．48）％]和对照组儿童[（7．13±1．48）％]（均P〈0．05）;而缓解期患儿外周血Tr水平与对照组儿童比较,差异无统计学意义（P〉0．05）。有过敏体质患儿外周血Tr水平[（5．53±1．18）％]明显低于无过敏体质患儿[（6．40±2．00）％]（P〈0．05）。哮喘组患儿外周血Tr水平[（6．17±1．72）％]与其外周血IgE水平[（144．86±14．74）IU／ml]呈负相关（rP=-0．435,P〈0．05）。结论外周血Tr水平在哮喘患儿发作期显著降低,而在有过敏体质的患儿更低,并与外周血IgE水平呈显著的负相关性。     

Detection of T-regulatory cells has a potential role in the diagnosis of classical Hodgkin lymphoma

Previous studies have demonstrated an increase in T-regulatory cells in the involved lymph nodes and peripheral blood of patients with Hodgkin lymphoma. Our study examined whether the detection of T-regulatory cells by flow cytometry could distinguish classical Hodgkin lymphoma (CHL) from benign cases and B-cell non-Hodgkin lymphomas (B-NHL). We measured CD4, CD25, and CD152 in 14 CHLs, 2 nodular lymphocyte-predominant Hodgkin lymphomas, 31 B-NHLs, and 54 benign cases. All T-regulatory cell parameters, including percent lymphocytes CD4+/CD152+ and CD4+/CD25+/CD152+, and mean and median CD152 expression in CD4+/CD25+ lymphocytes, were higher in CHL than in B-NHL and benign. Mean CD152 in CD4+/CD25+ lymphocytes distinguished CHL from benign with 79% sensitivity and 100% specificity, and from B-NHL with 71% sensitivity and 90% specificity. Overall, our results show that T-regulatory cells are increased in CHL and their detection may be a useful tool in differentiating CHL from other entities.