鼻咽癌患者外周血T淋巴细胞亚群水平分析

目的:研究鼻咽癌患者外周血T淋巴细胞亚群水平的特点、影响因素及临床意义。方法:运用流式细胞仪对66例鼻咽癌患者外周血T淋巴细胞亚群进行检测,并分析患者T淋巴细胞亚群变化,比较其与正常人群对照组的差异。结果:鼻咽癌患者CD4+细胞数减少(40.58±15.26%),明显低于正常对照组(P0.01),CD8+细胞数增加,Th/Ts比值下降或倒置(0.92±0.57)。结论:鼻咽癌患者存在细胞免疫功能紊乱,检测鼻咽癌患者外周血T淋巴细胞亚群的表达对评估患者的细胞免疫功能、疾病的治疗及预后具有一定的临床意义。     

流式细胞仪分选人外周血T淋巴细胞的方法建立与评价

目的:利用流式细胞仪同时分离外人周血单个核细胞中T淋巴细胞并检测其分离纯度及存活率。方法:本文采用流式细胞仪同时分选人外周血CD4~+、CD8~+T淋巴细胞为例,推而广之,采用人外周血淋巴细胞分离液梯度离心法制备外周血单个核细胞,采用流式细胞仪同时分选CD4~+、CD8~+T淋巴细胞,分离细胞再通过流式细胞仪回测其分离纯度并通过台盼蓝染色检测分离细胞的存活率。结果:采用此方法能有效人外周血细胞CD4~+、CD8~+T淋巴细胞,分选前CD4~+淋巴细胞纯度为(50.5±11.5)%、CD8~+T淋巴细胞纯度为纯度为(15.4±7.1)%;分选后CD4~+T淋巴细胞纯度为(94.3±1.3)%、CD8~+T淋巴细胞纯度为(93.6±1.6)%;分选后CD4~+T淋巴细胞存活率为(95.3±1.8)%,CD8~+T淋巴细胞存活率为(94.8±1.5)%,细胞的形态完整。结论:采用人外周血淋巴细胞分离液梯度离心法制备外周血单个核细胞后利用流式细胞仪分选的方法能够高效、快速的分离人外周血CD4~+、CD8~+T淋巴细胞,且存活率高,为进一步研究其功能提供了保证。采用不同的荧光抗体标记其他淋巴细胞亚群,也能高效、快速的分离出细胞。     

基于流式细胞术快速检测人鼻黏膜组织淋巴细胞亚群的实验研究

目的：基于流式细胞术检测正常人的鼻黏膜组织中的淋巴细胞亚群(CD3+T、CD4+T、CD8+T、NK、CD19+B)的比例,初步探讨 鼻局部黏膜免疫功能的意义,为鼻局部黏膜免疫性疾病的研究提供更多的参考。方法：用鼻黏膜刮匙获取21 例正常人的鼻黏膜 组织,并抽取其外周血2 mL。采用流式细胞术分别检测其鼻黏膜和外周血中的淋巴细胞亚群(包括CD3+T、CD4+T、CD8+T、NK、 CD19+B)分别所占的比例。结果：鼻黏膜和外周血的淋巴细胞亚群存在很大差异,与外周血相比,CD3+T 比例增加（t=15.34,P<0. 0001),CD4+T 比例降低(t=5.952,P<0.0001)、CD8+T 比例增加(t=12.44,P<0.0001)、NK 比例降低(t=4.865,P<0.0001)、CD19+B 比例降 低(t=15.56,P<0.0001),CD4+T/CD8+T 降低。结论：流式细胞术可以用来检测鼻黏膜的淋巴细胞亚群,鼻黏膜的淋巴细胞亚群和外 周血的淋巴细胞亚群存在很大差异,这种差异体现鼻黏膜组织独特的局部黏膜免疫功能,本方法为变应性鼻炎的研究提供了新 的研究途径。     

传染性单核细胞增多症患者外周血T细胞亚群检测及临床意义

目的检测传染性单核细胞增多症(IM)患者及非本病的发热患者外周血T淋巴细胞亚群,探讨EB病毒感染导致的传染性单核细胞增多症的免疫反应机制及与非本病发热患者的鉴别诊断价值,同时通过检测患者血液中的EBV-DNA载量加以确证。方法选取确诊为传染性单核细胞增多症的患者30例(IM组),非传染性单核细胞增多症的发热患者30例(对照组)。应用流式细胞技术检测患者外周血中淋巴细胞亚群,同时应用荧光定量PCR技术检测血清EBV-DNA载量,采用卡方检验及Mann-Whitney检验进行组间差异分析。结果 IM组与对照组患者T淋巴细胞亚群相比,CD8~+T淋巴细胞所占比例显著升高(Z=1.776,P0.001),CD4~+T淋巴细胞所占比例降低(F=4.008,P0.050),同时CD4~+/CD8~+比例明显下降(Z=6.653,P0.001)。IM组EBV-DNA病毒载量显著高于对照组,差异具有统计学意义(P0.050)。结论传染性单核细胞增多症患者外周血T淋巴细胞亚群主要以CD4~+T淋巴细胞及CD8~+T淋巴细胞的变化为主,T淋巴细胞亚群结合血清EBV-DNA病毒载量的联合检测对IM及非本病的发热患者具有鉴别诊断价值。     

SLE带状疱疹患者外周血CD4~+CD28~+和CD4~+CD25~+FoxP3~+调节性T细胞的表达及相关性研究

目的:检测系统性红斑狼疮(systemic lupus erythematosus,SLE)合并带状疱疹患者外周血CD4~+CD28~+和CD4~+CD25~+Fox P3~+调节性T细胞的表达及相关性,探讨其在SLE合并带状疱疹发病中的临床意义。方法:采用流式细胞术检测30例SLE患者、30例SLE合并带状疱疹患者及30例健康对照者外周血中CD4~+/CD8~+T淋巴细胞亚群表面CD28的表达及CD4~+CD25~+Fox P3~+Treg细胞的表达水平,并分析SLE合并带状疱疹患者外周血CD4~+CD28~+和CD4~+CD25~+Fox P3~+调节性T细胞表达的相关性。结果:SLE合并带状疱疹组患者急性期外周血CD4~+T淋巴细胞比率、绝对计数显著降低,CD4~+、CD8~+T淋巴细胞表面的CD28表达下调,CD4~+CD25~+Fox P3~+Treg细胞水平显著高于SLE组及健康对照组,SLE合并带状疱疹组患者外周血CD4~+CD25~+Fox P3~+Treg水平与CD4~+CD28~+水平成负相关(P均0.05)。结论:SLE合并带状疱疹患者CD4~+、CD8~+T细胞活化异常,CD4~+CD25~+Fox P3~+Treg细胞可能参与抑制了T细胞的活化。     

慢性阻塞性肺疾病患者外周血CD4+CD25+CD127(Low/-)调节性T细胞的检测及临床意义

目的:研究CD4+CD25+CD127(Low/-)节性T细胞在慢性阻塞性肺疾病(COPD)急性发作期外周血中的比例改变及其临床意义.方法:以25例COPD急性发作期患者外周血为研究组,20名正常人外周血作为对照组,采用三色直接荧光素标记法和多参数流式细胞仪检测外周血CD4+CD25+CD127(Low/-)调节性T细胞的比例,同时检测外周血C-反应蛋白(CRP)、血沉(ESR)、免疫球蛋白(Ig)等水平.结果:COPD急性发作期患者外周血CD4+CD25+CD127(Low/-)调节性T细胞占外周血CD4+淋巴细胞的比例明显低于健康对照组(P＜0.01).而COPD急性发作期患者外周血CRP、ESR、Ig等水平明显高于健康对照组(P＜0.05).COPD患者外周血调节T细胞下降与CRP和IgG升高成负相关.结论:COPD患者外周血CD4+CD25+CD127(Low/-)调节性T细胞在CD4+T淋巴细胞的比例明显减少,调节性T细胞等免疫调节因素可能在COPD的发病机制发挥重要作用.     

蕈样肉芽肿和湿疹中p53, Cox-2 的表达分析

目的:探讨蕈样肉芽肿、湿疹、正常皮肤中p53、Cox-2蛋白的表达差异性及其临床意义。方法:运用免疫组织化学法检测30例蕈样肉芽肿、20例湿疹及15例正常人皮肤组织中p53、Cox-2蛋白的表达情况。结果:蕈样肉芽肿表皮中及真皮中p53、Cox-2的阳性表达率显著高于湿疹及正常皮肤,差异均有统计学意义(P0.05)。各时期蕈样肉芽肿表皮、真皮中p53、Cox-2的表达比较差异均无统计学意义(P0.05)。结论:p53、Cox-2在蕈样肉芽肿和湿疹、正常皮肤的表达有显著差异,提示p53和Cox-2的表达异常在蕈样肉芽肿的发生中起着重要作用,p53、Cox-2可能作为鉴别诊断MF、皮肤炎症性疾病有价值的参考指标。     

宫颈癌患者外周血CD4+CD25+high调节性T细胞的表达及意义

目的:探讨宫颈癌患者外周血中CD4~ CD25~( high)调节性T(regulator T cells,Tr)的表达及意义。方法:采用流式细胞术检测52例宫颈癌患者,35例健康女性外周血中CD4~ CD25~( high)Tr、细胞毒性T细胞(cytotoxic T lymphocytes,CTL)和NK细胞,采用ELISA检测血清中-干扰素(interferon,IFN-)的表达水平。结果:宫颈癌患者外周血CD4~ CD25~( high)Tr占CD4~ T淋巴细胞的百分比为(7.18±2.32)%,高于健康女性组(P<0.05);宫颈癌患者外周血CD4~ CD25~( high)Tr水平与CTL、NK细胞及IFN-水平呈负相关。结论:宫颈癌患者外周血中具免疫抑制活性的CD4~ CD25~( high)Tr水平较高,参与宫颈癌患者的肿瘤免疫抑制。     

骨髓间充质干细胞对肾移植受者T淋巴细胞分化和miRNA-155表达的影响

目的探讨骨髓间充质干细胞（MSCs）对肾移植受者T淋巴细胞分化和miRNA-155表达的影响。 方法选取2013年1月至2017年12月于福州总医院接受MSCs诱导+同种异体肾移植术的受者20例（MSCs组）,对照组为同期配对的异体肾移植受者20例。两组患者术后免疫抑制方案均为霉酚酸酯+他克莫司+强的松。两组患者分别于移植术前、术后第15天抽取静脉血,流式细胞仪检测外周血CD4⁺ CD25⁺ FoxP3⁺ Treg细胞/?CD4⁺细胞亚群比值;ELISA检测白细胞介素2（IL-2）、肿瘤坏死因子α（TNF-α）和白细胞介素10（IL-10）浓度;免疫磁珠分选外周血T淋巴细胞后,Rea1-time PCR法检测外周血T淋巴细胞中miRNA-?155的表达。两组间均数比较采用独立t检验,治疗前后均数比较采用配对t检验。 结果移植前两组肾移植受者外周血CD4⁺ CD25⁺ FoxP3⁺ Treg细胞/?CD4⁺细胞比值、IL-2、IL-?10、TNF-α、T淋巴细胞miRNA-155表达水平差异均无统计学意义（P均> 0.05）;术后第15天,与对照组相比,MSCs组外周血CD4⁺ CD25⁺ FoxP3⁺ Treg细胞/?CD4⁺细胞亚群比值（30.44﹪?± 4.23﹪? vs 26.06﹪?±4.77﹪,t = 2.365,P = 0.042）、IL-10水平（20.35?ng/?L?±?5.10?ng/?L? vs 16.63?ng/?L±6.26?ng/?L,t = 2.062,P?=?0.046）上升,而IL-2（27.47ng/?L±4.30 ng/?L vs 31.40?ng/?L±5.33 ng/L,t = 2.252,P = 0.015）、TNF-α（41.52?ng/?L±8.32?ng/L vs 46.67?ng/?L±6.71?ng/L,t = 2.157,P = 0.037）和T淋巴细胞miRNA-155表达水平（1.61±0.31 vs 1.89±0.15,t = 3.688,P?= 0.001）则降低。 结论MSCs能够升高肾移植受者外周血CD4⁺ CD25⁺ FoxP3⁺ Treg细胞/?CD4⁺细胞比值和IL-10水平,降低IL-2、TNF-α和T淋巴细胞miRNA-155表达水平,与MSCs的免疫耐受诱导有关。     

细胞免疫功能及辅助型T细胞因子在口腔扁平苔藓中的作用

目的探讨细胞免疫功能及辅助型T细胞(Th)细胞因子在口腔扁平苔藓(OLP)中的作用。方法以35例糜烂型(糜烂组)及29例网纹型OLP(网纹组)患者为对象,选取同期20例健康人为对照组,流式细胞术检测外周血中T细胞、B细胞、NK细胞和调节性T细胞亚群表达百分率。ELISA法检测外周血中TNF-α和INF-γ(Th1型细胞因子),IL-4和IL-10(Th2型细胞因子),IL-17、IL-23(Th17型细胞因子)含量;分离外周血单个核细胞,qRT-PCR检测上述因子mRNA的表达。结果与健康组相比,OLP患者CD3~+、CD4~+T细胞亚群比例(F=3.211和3.565,P0.05)及CD4~+/CD8~+降低(F=3.430,P0.05),CD4~+Foxp3~+调节性T细胞亚群比例(F=3.370,P0.05)及外周血中TNF-α、INF-γ、IL-4、IL-10、IL-17、IL-23含量增高(F=0.923、0.820、1.043、1.132、0.745和0.802,P0.05)。与网纹组相比,糜烂组CD8~+T细胞亚群比例较低(t=2.450,P0.05);IL-4、IL-10蛋白(t=22.780和25.112,P0.05)及mRNA较低(t=3.781和6.710,P0.05),IL-17、IL-23蛋白(t=15.765和19.307,P0.05)及mRNA较高(t=4.022和8.569,P0.05)。结论口腔扁平苔藓患者存在细胞免疫紊乱及Th细胞因子异常,其中CD8~+及Th17型细胞与糜烂型OLP发病有关,Th2型细胞与网纹型OLP发病有关。     

Suppressor T lymphocytes from lepromatous leprosy skin lesions

The immune response in leprosy forms a spectrum with lepromatous leprosy patients exhibiting specific unresponsiveness to antigens of Mycobacterium leprae. This unresponsiveness is thought to be related to the prevalence of T8-positive lymphocyte in these lepromatous lesions. To analyze the immunoregulatory function of these T8 cells, we developed simple procedures to extract lymphocytes from skin biopsy specimens of patients with leprosy. These lymphocytes were sorted for T8 and T4 positive cells, and cell lines were established by expansion with interleukin 2 (IL 2) and irradiated feeder cells. All T8 positive lines tested were positive for IL 2 receptors and HLA-DR determinants. These lines were additionally assayed for lepromin-induced suppression of the normal peripheral blood lymphocyte Con A proliferative response. Thirteen of 32 lines from six lepromatous patients showed significant suppressor activity, whereas nine lines from six tuberculoid patients and one line from normal peripheral blood failed to show suppression (p less than 0.001). Taken together, the finding of M. leprae-triggered suppressor cells within lepromatous skin lesions may in part explain the M. leprae unresponsiveness of lepromatous leprosy patients.     

Relationship between CTLA-4 and CD28 molecule expression on T lymphocytes and stimulating and blocking autoantibodies to the TSH-receptor in children with Graves' disease

The present study was performed to elucidate the relationship between CTLA-4/CD28 molecules and stimulating (TSAb) and blocking (TBAb) antibodies to the TSH-receptor (TSH-R) in Graves' disease. CD28 and CD152 (CTLA-4) are glycoprotein molecules which provide a potent costimulatory signal for T-cell activation and proliferation via interactions with their ligands, B7.1/B7.2 molecules, which are present on the surface of antigen-presenting cells. The aim of the study was to estimate the expression of cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4, CD152), CD28, B7.1 (CD80), and B7.2 (CD86) molecules on peripheral blood cells in patients with Graves' disease (GD) (n = 55, mean age 15.5 +/- 5.1 years) and nontoxic nodular goiter (NTNG) (n = 55, mean age 15.2 +/- 4.5 years), in comparison with sex and age-matched healthy control subjects (n = 55, mean age 15.2 +/- 3.9 years). The expression of the costimulatory molecules on mononuclear cells was analyzed by three-color flow cytometry using a Coulter EPICS XL cytometer. Detection of TSAb and TBAb to the TSH-R using JPO9 CHO cells in unfractionated serum was measured by a highly sensitive commercial radioimmunoassay. When compared with healthy control subjects and euthyroid patients with GD, untreated patients with GD showed a significant increase of CD152+ (p < 0.001, p < 0.001) and CD28+ (p < 0.01, NS) T lymphocytes, respectively. After 6-12 months of methimazole therapy, the percentage of these cells in the peripheral blood of hyperthyroid patients returned to normal values. In addition, patients with GD showed an increase in the percentage of both B7.1 (3.8%) and B7.2 (18.4%) molecules on activated monocytes, compared to patients with NTNG (0.5% p < 0.05, 2.5% p < 0.01, respectively) and healthy control subjects (0.2% p < 0.05, 0.8% p < 0.003, respectively). In patients with untreated GD there was a statistically significant positive correlation between the expression of CTLA-4 on the surface of peripheral blood T cells and the index of TSAb antibodies (R = 0.54, p < 0.001) as well as a negative correlation with TBAb antibody titer (R = -0.58, p < 0.001). However, no such correlations were noted with regard to CD28 and anti-TPO, anti-TG, and TRAb antibodies. We conclude that changes in the expression of costimulatory molecules on the surface of peripheral blood T cells and their significant relationship with the level of antithyroid antibodies indicate an involvement of these molecules in the pathogenesis of GD.     

Cutaneous lymphocyte antigen expression on activated lymphocytes and its association with IL-12R (beta1 and beta2), IL-2Ralpha, and CXCR3

The majority of T lymphocytes that infiltrate psoriatic lesions express cutaneous lymphocyte antigen (CLA), a skin homing receptor involved in the influx of memory T cells to cutaneous sites. We investigated CLA expression on normal human peripheral blood mononuclear cells (PBMCs) and evaluated its association with IL-12 receptors, chemokine receptor, CXCR3, and IL-2Ralpha. PBMCs were stimulated in vitro with or without polyclonal activators (mitogen, or superantigens, or anti-CD3+anti-CD28) in the presence or absence of exogenous rhIL-12. The percentage of CLA+ T lymphocytes increased significantly after superantigen stimulation compared to anti-CD3+anti-CD28 or mitogen activation. The majority of activation induced CLA+ T lymphocytes co-expressed IL-12Rbeta1, IL-12Rbeta2, CXCR3, and CD25 in the presence of rhIL-12. Our results indicate that CLA expression on activated T lymphocytes is IL-12 and activation dependent and correlates with the expression of IL-12 receptors, IL-2Ralpha, and CXCR3. Monitoring the levels of Th1 differentiation markers such as CXCR3 and IL-12Rbeta2 along with activation marker, CD25 on skin homing CLA+ T lymphocytes may provide insight into the mechanism of action of immunotherapies directed against Th1 type skin inflammatory diseases.     

TOX Acts an Oncological Role in Mycosis Fungoides

Mycosis fungoides (MF) is a low-grade lymphoma characterized by clonal expansion of atypical CD4+ skin-homing T lymphocytes. Herein, we examined the role of thymocytes selection associated HMG-box (TOX), a gene previously found to be unregulated in MF skin biopsies, in MF pathogenesis. TOX encodes a high-mobility group family (HMG) domain DNA binding nuclear protein, which regulates the differentiation of developing T-cells. First, we confirmed that TOX expression levels in MF were increased compared with those in benign inflammatory dermatitis (BID) and normal skin. In addition, TOX level increased with the progression MF from patch stage to tumor stage. Overexpression of TOX accelerated the proliferation and migration of MF cell lines in vitro, which were blocked by AKT inhibitors. In conclusion, our study confirmed that TOX was highly expressed in MF lesions and accelerates the proliferation and migration of MF. TOX is a diagnostic marker for MF and may play a pathogenic role in disease progression.     

人腺病毒55型感染肺部病变与外周血淋巴细胞关系研究

目的:探讨人腺病毒55型感染肺部病变与外周血淋巴细胞改变的关系及致病意义。方法:以50例经胸部CT证实为腺病毒肺炎的患者为研究对象(肺炎组),调查其外周血细胞及T淋巴细胞亚群变化情况,并与同期腺病毒55型感染未出现肺部病变的患者30例(非肺炎组)对照;亚组分析50例肺炎组中多肺叶病变与单肺叶病变患者之间T淋巴细胞变化的差异。结果:与非肺炎组患者相比,肺炎组患者急性期外周血淋巴细胞比例明显降低、单核细胞比例明显升高(P0.01);肺炎组CD3+T淋巴细胞比例、CD3+CD4+T淋巴细胞比例及CD4/CD8比值较非肺炎组均有明显降低(P0.01)。亚组分析显示,肺炎组患者肺部病变范围不同,T淋巴细胞亚群的变化亦有差异,多肺叶病变组患者CD3+CD8+T淋巴细胞比例较单肺叶病变组明显升高、CD4/CD8比值较单肺叶病变组明显降低(P0.05)。结论:HAdv-55感染引起肺炎病变时,宿主存在明显的细胞免疫功能受损,且与肺部病变程度有一定正相关。     

瘢痕疙瘩及增生性瘢痕中MMP-2、MMP-9的表达

目的探讨基质金属蛋白酶-2、基质金属蛋白酶-9(MMP-2、MMP-9)在瘢痕疙瘩(keloid,Ke)及增生性瘢痕中(hypertrophic scar,HS)的表达。方法免疫组织化学SP法检测MMP-2、MMP-9在20例瘢痕疙瘩、15例增生性瘢痕及10例正常皮肤中的表达,采用图像分析技术对免疫组化结果进行定量分析。结果Ke中MMP-2表达高于正常皮肤(t=2.366,P<0.05),高于HS(t=2.223,P<0.05);MMP-9表达高于正常皮肤(t=3.198,P<0.01),高于HS(t=2.110,P<0.05)。HS中MMP-2表达与正常皮肤无差异(t=0.218,P>0.05),MMP-9表达与正常皮肤无差异(t=1.873,P>0.05)。正常人皮肤仅见MMP-2、MMP-9蛋白的弱阳性或阴性表达。结论MMP-2、MMP-9蛋白的表达与皮肤损伤后的过度增殖及肿瘤化倾向有关。     

Coevolution of markers of innate and adaptive immunity in skin and peripheral blood of patients with erythema migrans

We used multiparameter flow cytometry to characterize leukocyte immunophenotypes and cytokines in skin and peripheral blood of patients with erythema migrans (EM). Dermal leukocytes and cytokines were assessed in fluids aspirated from epidermal suction blisters raised over EM lesions and skin of uninfected controls. Compared with corresponding peripheral blood, EM infiltrates were enriched for T cells, monocytes/macrophages, and dendritic cells (DCs), contained lower proportions of neutrophils, and were virtually devoid of B cells. Enhanced expression of CD14 and HLA-DR by lesional neutrophils and macrophages indicated that these innate effector cells were highly activated. Staining for CD45RO and CD27 revealed that lesional T lymphocytes were predominantly Ag-experienced cells; furthermore, a subset of circulating T cells also appeared to be neosensitized. Lesional DC subsets, CD11c(+) (monocytoid) and CD11c(-) (plasmacytoid), expressed activation/maturation surface markers. Patients with multiple EM lesions had greater symptom scores and higher serum levels of IFN-alpha, TNF-alpha, and IL-2 than patients with solitary EM. IL-6 and IFN-gamma were the predominant cytokines in EM lesions; however, greater levels of both mediators were detected in blister fluids from patients with isolated EM. Circulating monocytes displayed significant increases in surface expression of Toll-like receptor (TLR)1 and TLR2, while CD11c(+) DCs showed increased expression of TLR2 and TLR4; lesional macrophages and CD11c(+) and CD11c(-) DCs exhibited increases in expression of all three TLRs. These results demonstrate that Borrelia burgdorferi triggers innate and adaptive responses during early Lyme disease and emphasize the interdependence of these two arms of the immune response in the efforts of the host to contain spirochetal infection.     

Lymphocyctes Tgammadelta in clinically normal skin and peripheral blood of patients with systemic lupus erythematosus and their correlation with disease activity

Human Tgammadelta lymphocytes constitute from 1 to 15% of all peripheral blood lymphocytes. Recent work has demonstrated that this population plays a major role in the pathogenesis of infectious and immune diseases. Increased numbers of gammadelta T cells have been found in affected skin from systemic sclerosis and chronic cutaneous lupus erythematosus patients. In our study, we have determined the numbers of Tgammadelta lymphocytes and their subpopulations in peripheral blood from 29 patients with systemic lupus erythematosus (SLE) and in 19 healthy volunteers using flow cytometry and specific monoclonal antibodies. The same cells in uninvolved skin from SLE patients and human controls using immunohistochemical analysis were estimated. T-Cell receptor (TCR) delta chain gene rearrangement was identified with primers for Vdelta1, Vdelta2 and Vdelta3 by the polymerase chain reaction. Statistical analysis showed a significantly decreased number of gammadelta T cells in SLE patients (26.4+/-16.9/microl) compared with the control group (55.3+/-20.6/microl (p < 0.001). The number of Vdelta2 TCR+ and Vgamma9 TCR+ subpopulations was also lower in SLE patients than in healthy persons. No statistical correlation between disease activity and the number of gammadelta T cells was demonstrated. The percentage of Tgammadelta lymphocytes in clinically normal skin from SLE patients was twice (22.0+/-9.4%) that found in the skin from healthy persons (11.1+/-5.5%) (p < 0.002). Higher percentages of the Vdelta2 TCR+ and Vgamma9 TCR+ subpopulation of lymphocytes were found in the skin from SLE patients. We have also found positive correlation between the percentage of Tgammadelta lymphocytes in skin and the activity of SLE (r=0.594, p < 0.001), and between subpopulation Vdelta3 TCR+ and disease activity (r=0.659, p< 0.001). In conclusion, the results of our studies demonstrate that, in patients with SLE, accumulation of Tgammadelta lymphocytes can be seen in clinically normal skin, and the percentage of these cells correlates with the activity of the disease.     

肥厚性扁平苔藓皮损中浸润淋巴细胞的研究

目的探讨淋巴细胞浸润在肥厚性扁平苔藓发病机制中的意义。方法采用免疫组织化学SP法对10例肥厚性扁平苔藓患者皮损、20例非肥厚性扁平苔藓患者皮损及10例正常人皮肤中CD3、CD4、CD8、CD20进行检测。结果所有患者皮损均以CD3^＋’T、CD4^＋T、CD8^＋T细胞浸润为主,散在CD20^＋B细胞浸润。肥厚性皮损中浸润T淋巴细胞数少于非肥厚性皮损（P〈0．01）,CD20^＋B细胞占浸润淋巴细胞百分率高于非肥厚性皮损（P〈0．05）。正常人皮肤仅在真皮偶见CD3^＋T细胞。结论肥厚性扁平苔藓皮损T淋巴细胞的减少,B淋巴细胞的增多表达可能与疾病的持续存在及局部过度增殖性改变密切相关。