扁平苔藓患者外周血CD4+CD25+Treg细胞的检测

目的:检测扁平苔藓患者外周血CD4+CD25+调节性T细胞(regulatory T cells,Treg)的数量及FOX3 mRNA的表达.方法:采用流式细胞术对25例扁平苔藓患者和25例健康对照者外周血CD4+CD25+Treg细胞进行检测,并通过RT-PCR方法检测FOXP3转录因子在外周血单个核细胞的表达.结果:泛发性扁平苔藓和口腔扁平苔藓患者外周血CD4+CD25+ Treg细胞数分别为(2.68±2.21)%和(2.38±2.67)%,均低于健康对照者(7.87±1.77)%;扁平苔藓患者的FOPX3表达水平也低于健康对照(P<0.05).结论:CD4+CD25+ Treg细胞数量和功能下降,可能通过导致扁平苔藓患者免疫功能紊乱参与了扁平苔藓的发病.     

CD4~+CD25~+调节性T细胞与Th17细胞在寻常型银屑病中的表达

目的:检测外周血中CD4~+CD25~+调节性T细胞(简称Treg细胞)与Th17细胞在寻常型银屑病(PV)中的表达。方法:34例寻常型银屑病患者,18例正常人作为对照。采用流式细胞术检测外周血中Treg细胞、FOXP3~+Treg细胞及Th17细胞的表达水平。结果:PV患者外周血中Treg细胞比例和FOXP3~+Treg细胞比例分别为(3.68±1.22)%和(0.53±0.19)%,低于正常对照组的(6.63±1.00)%和(0.76±0.14)%(P0.05)。Th17细胞比例为(2.20±0.78)%,高于正常对照组的(0.65±0.22)%(P0.05)。PV患者外周血中Treg细胞的表达与FOXP3~+Treg细胞的表达呈正相关(r=0.563,P0.05),而Treg细胞的表达与Th17细胞的表达呈负相关(r=-0.522,P0.05);Treg细胞和Th17细胞二者与PASI评分无相关性,与病程亦无相关性。结论:Treg细胞表达的减少及Th17细胞应答的增强,可能是导致PV免疫失衡的重要原因。     

白癜风患者外周血CD4+CD25+调节性T细胞的检测

目的 检测不同病期白癜风患者外周血CD4+CD25+调节性T细胞水平,探讨其与白癜风发病的关系.方法 白癜风患者34例,进展期19例,稳定期15例.通过流式细胞仪对不同病期白癜风患者外周血CD4+、CD4+CD25+T细胞水平进行检测,并与20例正常人比较.结果 进展期患者外周血中CD4+CD25+调节性T细胞占外周血淋巴细胞的表达率低于正常对照组(P<0.05);稳定期患者与正常对照组比,差异无统计学意义(P＞0.05);进展期患者低于稳定期患者,差异有统计学意义(P<0.05).进展期患者CD4+CD25+调节性T细胞占外周血淋巴细胞表达率与皮损面积呈负相关(P<0.05),稳定期则无相关性(P＞0.05).进展期与稳定期患者CD4+CD25+调节性T细胞占外周血淋巴细胞水平与病程均无明显相关性(P＞0.05).结论 白癜风患者外周血中存在异常比例的cD4+CD25+调节性T细胞,可能与白癜风的发病有关.     

卵巢癌患者腹水及外周血CD4~+CD25~+调节性T细胞含量及抑制功能的研究

目的:分析并探讨卵巢癌患者腹水及外周血CD4~+CD25~+调节性T细胞含量及抑制功能。方法:选取2012年2月至2015年2月期间在我院和宁波市鄞州第二医院接受治疗的卵巢癌患者56例,采集腹水标本56例,外周血标本56例。使用流式细胞术检测CD4~+CD25~+调节性T细胞(Treg)的表达。采用1.5μmol/L的羧基荧光素二醋酸盐琥珀酰亚胺脂(CFSE)标记CD4~+CD25-T细胞,观察CFSE标记效果,计算抑制率。结果:研究结果显示,56例腹水患者CD4~+CD25~+T cells/CD4~+T cell为(28.34±13.27)%,56例外周血标本CD4~+CD25~+T cells/CD4~+T cell为(14.56±4.36)%。腹水和外周血标本CD4~+CD25~+T cells/CD4~+T cell含量有显著差异(P0.05)。腹水Treg抑制功能比外周血Treg强,经统计学检验,差异具有统计学意义(P0.05)。结论:腹水Treg含量及抑制功能比外周血Treg强,提示卵巢癌腹腔内相对容易发生免疫逃逸,而Treg升高可能参与促进肿瘤复发。     

散发型白癜风患者外周血CD4~+/CD8~+T细胞比值及CD4~+CD25~+T细胞的检测

目的检测散发型白癜风患者外周血CD4+/CD8+T细胞比值及CD4+CD25+调节性T细胞水平,探讨其与散发型白癜风发病的关系。方法散发型白癜风患者29例,男13例,女16例。通过流式细胞仪对散发型白癜风患者外周血CD4+/CD8+T细胞比值及CD4+CD25+调节性T细胞水平进行检测,并与20例健康人相比较。结果与健康对照组相比,散发型白癜风患者外周血中CD4+/CD8+T细胞比值的差异无统计学意义(P0.05),而CD4+CD25+调节性T细胞水平明显减少,差异有统计学意义(P0.05),但在不同病程的患者中CD4+CD25+调节性T细胞数量的差异无统计学意义(P0.05)。结论散发型白癜风患者外周血中存在CD4+CD25+调节性T细胞水平下降,可能与散发型白癜风的发生发展有一定关系。     

斑秃患者外周血CD4~+ CD25~+ Treg细胞计数及TGF-β_1的表达

目的通过检测斑秃患者外周血中CD4+CD25+Treg细胞计数、转化生长因子-β1(TGF-β1)的表达水平,探讨斑秃的发病机制。方法采用流式细胞技术检测50例未治疗的斑秃患者外周血中CD4+CD25+Treg细胞的水平变化,ELISA法检测血清中TGF-β1含量,并进行相关性分析,以30例健康者作为正常对照。结果斑秃患者组外周血CD4+CD25+Treg细胞占T淋巴细胞的比率和血清TGF-β1浓度均低于正常对照组(P均<0.01),且重型患者组显著低于正常对照与局限型患者组(P<0.01),局限型患者组低于正常对照组(P<0.05)。斑秃患者外周血CD4+CD25+Treg细胞水平,血清中TGF-β1含量均与SALT评分呈显著负相关(r=-0.566,-0.471;P均<0.01),而两者呈显著正相关(r=0.584,P<0.01)。结论斑秃患者外周血中CD4+CD25+Treg细胞与血清中TGF-β1呈一定相关性,且两者与斑秃病情的严重程度相关;CD4+CD25+Treg细胞的数量减少和TGF-β1表达降低可能与斑秃的细胞免疫失调有关。     

梅毒血清固定患者外周血CD4+CD25+调节性T细胞比例及功能的研究

目的:通过检测梅毒血清固定患者外周血CD4+CD25+调节性T细胞(regulatory T cells,Treg)比例和功能的改变,探讨Treg在梅毒血清固定现象形成中的作用.方法:收集梅毒血清固定患者26例,正常对照23例,利用流式细胞术分别检测外周血Treg比例及Treg内Foxp3、细胞毒性T淋巴细胞抗原(CTLA)-4及白介素(IL)-10的定量表达情况.结果:梅毒血清固定组患者外周血Treg比例明显高于正常对照组(P＜ 0.01);且Treg内转录因子Foxp3及功能性分子CTLA-4和IL-10的表达量也明显高于正常对照组(P＜ 0.05或P＜0.01).结论:梅毒血清固定患者外周血Treg比例和功能的异常,可能是导致该现象形成的重要原因之一.     

寻常型银屑病患者外周血CD4~+CD25~+及CD8~+CD25~+细胞的检测

目的研究进展期寻常型银屑病患者外周血CD4+CD25+和CD8+CD25+调节性T细胞的数量变化及其在银屑病免疫病理学发病机制中的作用。方法应用流式细胞术对进展期寻常型银屑病患者外周血CD4+CD25+和CD8+CD25+调节性T细胞进行检测。结果进展期寻常型银屑病外周血CD4+CD25+细胞及CD8+CD25+调节性T细胞数量与正常对照组相比,均显著降低(P<0.05,P<0.005),而CD4+CD25+/CD8+CD25+比值无显著性差异(P>0.05)。结论寻常型银屑病的发病与CD4+CD25+和CD8+CD25+调节性T细胞的同步降低有关,与二者的比值无关。     

银屑病患者体外系统血液固有免疫反应中CD4~+ CD25~+ T细胞及CD4~+ CD25~(high) T细胞的变化与意义

目的用体外系统血液固有免疫反应体系研究银屑病患者外周血CD4+ CD25+T细胞及CD4+ CD25highT细胞的变化,并探讨其在银屑病发病机制中的作用。方法将灭活大肠杆菌悬液(3×108/mL)0.2mL作为免疫原激活剂加入枸橼酸抗凝的全血细胞悬液0.2mL和血浆0.3mL中,37℃水浴1h,用流式细胞仪测定CD4+ CD25+T细胞及CD4+ CD25highT细胞的比例。结果在加入大肠杆菌的银屑病全血细胞组(银屑病实验组)CD4+ CD25highT细胞比例(1.88%)明显高于银屑病对照组(1.41%)(P﹤0.01),CD4+ CD25+T细胞及CD4+ CD25highT细胞的比例(16.86%,1.88%)明显低于加入大肠杆菌的健康实验组(24.26%,2.81%)(P﹤0.01);银屑病对照组CD4+ CD25+T细胞及CD4+ CD25highT细胞的比例(15.97%,1.41%)较健康对照组明显降低(21.75%,2.17%)(P﹤0.01);健康实验组CD4+ CD25+T细胞及CD4+ CD25highT细胞的比例群(24.26%,2.81%)均明显高于健康对照组(21.75%,2.17%),(P﹤0.05)。结论银屑病患者CD4+ CD25+T细胞及CD4+ CD25highT细胞比例降低,外来抗原刺激后比例升高,但与健康正常人存在差异。这可能与其复杂的系统免疫学发病机制相关。     

SLE患者外周血中CD4+CD25+CD127low/-标记的调节性T细胞与临床表现和实验室指标相关性研究

目的:探讨CD4+CD25+CD127low/-标记的调节性T细胞(Treg)在系统性红斑狼疮发病机制中的作用.方法:用流式细胞仪检测45例系统性红斑狼疮(SLE)患者和45例年龄、性别相匹配的健康志愿者外周血CD4+T细胞中Treg的百分比,同时分析SLE患者外周血中的CD4+CD25+CD127low/-标记的Tr...     

CD4+ CD56+ hematodermic neoplasm

We report a case of a 75-year-old man with a cutaneous CD4+CD56+ hematodermic neoplasm. CD4+CD56+ hematodermic neoplasms are rare and commonly present as cutaneous lesions. This is an important diagnosis in the differential diagnosis of cutaneous hematologic malignancies because of the extremely poor prognosis.     

Gemcitabine-associated CD8+ CD30+ pseudolymphoma

We describe a 69-year-old man with a non-small cell carcinoma of the lung, stage III B, who developed bilateral multiple erythematous lesions in the abdominal-inguinal area following treatment with gemcitabine. Histologically, the lesion was characterized by a heavy lymphocytic infiltrate with large CD30+ cells. The lesion was highly suggestive of cutaneous involvement by malignant lymphoma, but complete regression was observed after cessation of gemcitabine. Although rarely reported, gemcitabine therapy can induce skin lesions. Pathologists should be aware of this possibility in order to avoid a misdiagnosis.     

CD2- CD4+ CD56+ hematodermic/hematolymphoid malignancy

BACKGROUND: CD2- CD4+ CD56+ lymphoid malignancy has been only rarely reported the last 5 years. It is characterized by a high incidence of cutaneous involvement, cytologically agranular cells, aggressive clinical course, and negative Epstein-Barr virus (EBV) involvement. OBSERVATION: We describe a Japanese patient with a unique hematolymphoid malignancy characterized by an involvement of skin, nasopharyngeal region, bone marrow, lymph node, and a CD4+ CD43+ CD56+ CD2- CD3- CD8- and terminal deoxynucleotidyl transferase phenotype. Clinically, the cutaneous eruptions were purplish, hard, multiple nodules. Histologically, a massive proliferation of atypical pleomorphic cells with medium-sized nuclei were observed throughout the dermis. No clonal rearrangement of T-cell receptor (TCR)-beta gene or immunoglobulin heavy chain J gene was found, and no positive identification of EBV by in situ hybridization for EBV-encoded small nuclear RNA was found. The patient underwent high-dose chemotherapy with autografting of peripheral blood stem cells; however, the tumors quickly relapsed. CONCLUSION: We gathered data from 17 cases of lymphoid malignancy from the literature sharing immunophenotypic and genotypic features similar to those of our case, including CD2- CD4+ CD56+ and germline rearrangement of TCR. Although the cellular origin could not be decided, this malignancy was found to have 100% affinity for skin, a short course, and poor prognosis.     

Imbalance of CD4+CD29+ and CD4+CD45RA+ T-helper cell subsets in peripheral blood of patients with severe atopic dermatitis

To determine the proportion of T-helper cell subsets in the peripheral blood we studied 16 patients with mild, moderate and severe atopic dermatitis. Lymphocytes were isolated from heparinized peripheral blood and analysed by two-colour flow cytometry. Patients with severe atopic dermatitis had a decreased CD4+CD29+CD4+CD45RA+ ratio (p<0.01). We found a decreased absolute number of CD4+CD29+ cells (p<0.05) and an increased absolute number of CD4+CD45RA+ cells (p<0.05) in the peripheral blood. No significant changes in the CD4+CD29+CD4+CD45RA+ ratio were found in the peripheral blood of patients with clinically mild or moderate atopic dermatitis.     

脓毒症患者CD14+CD16+单核细胞的作用探讨

目的观察脓毒症患者外周血单核细胞CD14+CD16-、CD14+CD16+、CD14-CD16+三个亚群表达HLA-DR、CD14、CD16的异同,并分析CD14+CD16+单核细胞的特点。方法选取67例脓毒症患者为脓毒症组和15例健康志愿者作为对照组,脓毒症组根据疾病严重程度分为脓毒症（15例）、重症脓毒症（41例）和脓毒性休克组（11例）,收集临床资料,计算APACHE II评分,流式细胞仪检测单核细胞各亚群CD14、CD16、HLA-DR的表达。结果脓毒症患者CD14+CD16+单核细胞数目较正常对照组显著升高（P＜0.01）;脓毒症患者单核细胞HLA-DR、CD14平均荧光强度均较健康对照组明显降低,并随着脓毒症患者病情由轻到重而逐渐下降;各组中CD14+CD16+单核细胞相对高表达HLA-DR、CD14;单核细胞HLA-DR表达与临床指标间存在较好的相关关系。结论①脓毒症患者单核细胞HLA-DR表达显著降低;②CD14+CD16+单核细胞在脓毒症发病的免疫机制中可能起到重要作用。     

Defective functions of circulating CD4+CD25+ and CD4+CD25- T cells in patients with chronic ordinary urticaria

BACKGROUND: Patients with chronic ordinary urticaria (CU) are divided into two groups: 30-50% have chronic autoimmune urticaria, and the remainder have chronic idiopathic urticaria. CD4(+)CD25(+) regulatory T (Treg) cells play critical roles in maintaining peripheral tolerance and preventing autoimmunity, but the characteristics of Treg cells have not yet been defined in CU. OBJECTIVE: To identify whether CD4(+) T cells play an important immunoregulatory role in the etiology of CU, we determined the frequencies and functions of circulating CD4(+)CD25(+) and CD4(+)CD25(-) T cells in CU patients and healthy control subjects, with special focus on the characteristics of CD4(+)CD25(+) T cells. METHODS: Peripheral blood mononuclear cells (PBMCs) were obtained from CU and healthy controls in this study. The frequency of CD4(+)CD25(+) T cells in PBMCs was detected by flow cytometry. The expression levels of forkhead box P3 (FOXP3) and transforming growth factor-beta (TGF-beta) in CD4(+)CD25(+) T cells were detected by real-time PCR. Furthermore, the suppressive function of CD4(+)CD25(+) T cells was analyzed. Additionally, the Th1/Th2 cytokine secretory profile in mitogen-stimulated CD4(+)CD25(-) T cells was measured by ELISA. RESULTS: An increased frequency of CD4(+)CD25(+) T cells was observed in CU patients (n=19) compared to control subjects (n=7). No significant difference was detected in the expression levels of FOXP3 or TGF-beta between CU patients (n=14) and control subjects (n=7). Strikingly, the suppressive capacity of CD4(+)CD25(+) Treg cells from 2 of 5 CU patients was partially defective. We also found that cytokine production from CD4(+)CD25(-) T cells was significantly reduced in CU patients (n=9) compared to healthy donors (n=11). CONCLUSIONS: Our data demonstrate that CD4(+)CD25(+) and CD4(+)CD25(-) T cells in PBMCs exhibit defective functions in CU patients.     

CD4~+ CD25~+调节性T细胞与寻常型银屑病

CD4~+CD25~+Treg是近年来日益受关注的T细胞亚群之一,参与维持机体免疫内环境的稳定。研究表明,该亚群T细胞在包括寻常型银屑病在内的多种自身免疫紊乱性皮肤病的发病中发挥重要作用。该领域的进一步研究将对深入探索其他自身免疫性疾病的发病机理和防治策略有着深远的意义。