类风湿关节炎患者外周血T淋巴细胞亚群与临床相关性分析

目的 探讨类风湿关节炎(RA)患者外周血T细胞亚群的变化情况,了解其变化在RA发病及炎症活动中的意义.方法 采用流式细胞仪荧光抗体标记法分别对197例RA患者的外周血淋巴细胞进行CD3/CD8/CD45/CD4及CD3/CD16+56/CD45/CD19四色荧光抗体(B.D)标记,分析比较RA患者外周血淋巴细胞比例情况,并与RA疾病活动性评分(DAS28-4)、压痛关节数、肿胀关节数、晨僵时间、医生和患者对疼痛程度的视觉模糊评分(VAS)、血红细胞沉降率、C反应蛋白及血清学抗体行相关分析.结果 RA患者外周血淋巴细胞中CD3+CD19-、CD3+CD4+和CD3+CD8+T细胞占总淋巴细胞的百分率分别为(71.06±12.07)%、(45.13±36.14)%和(26.56±9.54)%,RA患者CD3+CD19-T细胞与DAS28-4、压痛关节数、肿胀关节数及患者VAS存在负相关(P<0.05).RA患者外周血CD3+CD4+T(Th)淋巴细胞与抗环瓜氨酸肽抗体呈明显负相关(r=-0.156,P=0.029),与抗角蛋白抗体、人抗核周因子抗体、类风湿因子无明显相关.合并肺间质病变组与未合并肺间质病变组T细胞和Ts细胞差异有统计学意义(Z=-2.159和-2.031,P=0.031和0.042),合并干燥综合征组与未合并干燥综合征组的免疫功能差异无统计学意义(P>0.05).结论 RA思者外周血T淋巴细胞存在比例的失衡,T淋巴细胞数量的异常可能是RA发病及炎症活动的重要影响因素.

Abstract：

Objective To study the change of T cell subsets in peripheral blood of patients with rheumatoid arthritis (RA) and investigate the significance of T cell 1 subsets change in the incidence and inflammatory activity of RA. Methods Four-color fluorescence flow cytometry was used to detect the CD3/CD8/CD45/CD4 and CD3/CD16 +56/ CD45/CD19 markers in the peripheral blood lymphocytes of 197 RA patients. The proportion of peripheral blood lymphocytes in RA patients was compared and correlation analysis was conducted between T cell subsets and disease activity indices which include disease activity score(DAS28-4) ,tender joint count (TJC) .swollen joint count(SJC) , time of morning stiffness, patient's global assessment of disease activity on a 100 mm VAS by doctor and patients, erythrocyte sedimentation rate, C-reactive protein and serum antibody. Results The proportions of CD3+CD19- , CD3+ CD4+ and CD3+ CD8+ T cells in peripheral lymphocytes were (71.06 ±12.07)% , (45.13 ±36.14)% and (26.56 ±9.54)% respectively in RA group. Correlation analysis indicated significant negative correlations of the proportions of CD3+ CD19- cells with DAS28-4, TJC, SJC and patient's global assessment of disease activity a 100 mm VAS by patients (P <0.05 ). Furthermore, CD3+ CD4+ T cells still showed significant negative correlation with the anti-CCP antibody (r =-0. 156,P =0. 029) , and no correlation with AKA, APF and RF. CD3+ CD19-and CD3+CD8 + T cells showed significant differences between the interstitial lung disease group and control group (Z=-2. 159 and -2.031, P= 0. 031 and 0.042). There was no significant difference between the Sj(o)gren' s Syndrome group and control group(P>0.05). Conclusion The proportion of T lymphocytes in peripheral blood of patients with RA and the abnormality of T lymphocytes may play an important role in the incidence and inflammatory activity of RA.     

类风湿关节炎患者淋巴细胞亚群分析

目的:检测类风湿关节炎(RA)患者外周血淋巴细胞亚群,探讨RA患者外周血淋巴细胞亚群与疾病转归之间的相关性。方法:采取横断面研究,纳入RA患者42例,其中初发组15例,治疗组27例。根据治疗前后类风湿关节炎疾病活动性评分(DAS28)的变化,治疗组分为缓解组12例和难治组15例。用流式细胞术测定外周血淋巴细胞亚群。采用t检验、单因素方差分析(one-way ANOVA)、χ2检验、Pearson相关性分析进行统计学处理。结果:初发组的淋巴细胞、CD3+T细胞、CD56+CD16+NK细胞计数均低于对照组(P<0.01),而CD19+B细胞高于对照组(P<0.01);难治组的淋巴细胞、CD3+T细胞、CD56+CD16+NK细胞计数均低于缓解组(P<0.01),而CD19+B细胞高于RA缓解组(P<0.01);T、B淋巴细胞与DAS28评分、红细胞沉降率(ESR)均具有相关性。结论:各型淋巴细胞均在RA中起着重要作用,且与疾病活动度相关。     

来氟米特对类风湿关节炎患者外周血Thl/Tcl细胞的影响

目的探讨来氟米特对类风湿关节炎(RA)患者外周血T淋巴细胞亚群的影响.方法采用细胞内细胞因子染色、三色流式细胞分析法检测单个细胞分泌细胞因子的情况.收集25位RA患者和10例接受来氟米特治疗前及治疗3个月后的RA患者的外周血,对CD4+、CD8+细胞分泌IL-4和IFN的情况进行检测.结果RA患者和健康对照组的外周血CD4+/CD8+T淋巴细胞中,分泌IFN(的细胞群均比分泌IL-4的细胞群多,同健康对照组相比,RA患者外周血中Th1型细胞明显减少.产生IFN的Th1型、Tc1型细胞和产生IL-4的Th2型细胞在接受来氟米特治疗后明显减少,而Tc2型细胞则无明显增加或减少.结论来氟米特可能通过抑制Th1型和Tc1型的分化、减少Th1/Tc1型细胞因子如IFN(的分泌而发挥抗炎及改变类风湿关节炎病程的作用.     

不明复发性流产封闭抗体及淋巴细胞免疫表型检测对淋巴细胞主动免疫治疗效果的评估价值

目的 探讨不明复发性流产(URSA)封闭抗体(BA)及淋巴细胞免疫表型检测对淋巴细胞主动免疫治疗效果的评估价值.方法 选择100例接受淋巴细胞主动免疫治疗的URSA患者,治疗前后分别采用ELISE法检测外周血BA情况,采用流式细胞术检测外周血T淋巴细胞、B淋巴细胞、Treg细胞及NK细胞免疫表型,观察妊娠结局.结果 治疗前BA阳性率差异有统计学意义(P<0.05).治疗后BA阴性者与BA阳性者的妊娠成功率差异有统计学意义(P<0.05).治疗后CD3+T、CD4+T、CD3-CD56+NK明显变化(P<0.05),CD8+T、CD4+T/CD8+T、CD3+THLA-DR+/CD3+、CD8+THLA-DR+/CD8+、CD4+T CD25+ CD127dimTreg、CD19+B、CD5+CD19+B、CD5-CD19+B、CD3+CD56+NK、CD56+CD69+NK无明显变化(P>0.05).妊娠成功者与失败者的CD3+T、CD4+T、CD4+THLA-DR+/CD4+、CD3-CD56+NK比较差异有统计学意义(P<0.05).结论 淋巴细胞主动免疫治疗能够提高BA阳性率,改善外周血T细胞、NK细胞的比例,BA和淋巴细胞免疫表型可作为评估主动免疫疗效的指标.     

甲泼尼龙联合环磷酰胺对博来霉素诱导的肺纤维化大鼠模型炎症反应与免疫细胞活性的影响CSCD

Objective To observe the effect of methylprednisolone (MP) combined with cyclo‑ phosphamide (CTX) on inflammation and immune cell activity in bleomycin (BLM)‑induced pulmonary fibrosis rat model. Methods Forty healthy 6 to 8‑week‑old SD rats were randomly divided into blank control, BLM model, BLM+MP, and BLM+MP+CTX groups, with 10 rats in each group. The rat model of pulmonary fibrosis was prepared by intratracheal infusion of BLM (5 mg/kg, only once). From the 7th day of modeling, MP (3 mg/kg) was injected in rats in the BLM+MP group and MP (3 mg/kg)+CTX (8 mg/kg) was injected via tail vein in rats in the BLM+MP+CTX group, once daily for 21 days. The degree of lung inflammation and fibrosis in rats was detected using HE and Masson staining methods. The numbers of granulocytes and neutrophils in bronchoalveolar lavage fluid (BALF) and blood T cell subsets in rats were detected using flow cytometry. Results On the 7th day of modeling, the external morphology, HE and Masson staining results of rat lung tissue showed that BLM‑induced pulmonary fibrosis model was successfully prepared. On the 28th day of modeling, the lung tissue structure of the BLM group was disordered with obvious collagen deposition, the number of granulocytes and neutrophils in BALF increased significantly, the propor‑ tion of blood T cells, CD4+ T cells, and regulatory T cells (Tregs) decreased, the proportion of CD8+ T cells, and the CD4+/CD8+ T cells ratio decreased significantly (all P<0.05). Compared with the BLM group, the degree of pulmonary fibrosis in the BLM+MP+CTX group was improved significantly, the number of granulo‑ cytes and neutrophils in BALF decreased significantly, the proportion of blood T cells, CD4+ T cells and Tregs cells increased significantly, the proportion of CD8+ T cells decreased, and the ratio of CD4+/CD8+ T cells increased significantly (all P<0.05). The improvement effect in rats of BLM+MP+CTX group was better than that of BLM+MP group, and the difference was statistically significant (P<0.05). Conclusion MP com‑ bined with CTX can reduce the degree of inflammatory reaction in rats with pulmonary fibrosis and improve T cell immune activity. © 2023 Chinese Medical Association. All rights reserved.     

传染性单核细胞增多症患儿细胞免疫功能变化及意义

目的探讨EB病毒感染引起的传染性单核细胞增多症(IM)患儿外周血免疫功能变化及意义。方法采用流式细胞术分析27例IM患儿急性期外周血淋巴细胞、CD3+T细胞、CD3+CD4+T细胞(Th)、CD3+CD8+T细胞(CTL+TS)、CD4+/CD8+、CD3-CD19+B细胞、CD3-CD16+56+(NK细胞),并与30例同龄健康对照组儿童进行比较。结果 IM患儿CD3+T细胞、CD8+T细胞高于对照组,CD4+T细胞、CD4+/CD8+、B淋巴细胞低于对照组,差异有统计学意义(P<0.05)。结论 EB病毒感染引起的IM患儿外周血淋巴细胞亚群变化明显,追踪其淋巴细胞动态变化对评估患儿的免疫状态具有重要意义。     

类风湿关节炎患者Th1、Th17细胞的表达

目的 分析类风湿关节炎(RA)患者外周血和关节滑液中Th极化细胞(Th1、Th17细胞)的表达.方法 流式细胞技术测定RA患者外周血、关节滑液中CD4T细胞上 IFN-γ~+ IL-17~- (Th1)、IL-17~1 IFN-γ(Th17)的表达,并与健康人比较,分析疾病活动指数(DAS28)和Th极化细胞表达量、Th1/Th17比值之间的关系.结果 RA患者关节滑液Th1、Th17细胞的平均百分比与RA外周血、健康人外周血比较,差异有统计学意义(P＜0.01).RA患者关节滑液中Th1细胞、Th1/Th17细胞比值与DAS28指数呈正相关(P＜0.01).结论 在RA疾病部位关节液中是Th1细胞占优势,IL-Th1细胞的表达与疾病活动性密切相关.     

类风湿关节炎患者外周血Th0/Th1/Th2细胞亚群失衡的研究

目的研究类风湿关节炎(RA)患者外周血辅助性T细胞(T-helpercell,Th)亚群的状态,以探讨Th细胞亚群(Th0/Th1/Th2)在RA发病机制中的作用。方法利用流式细胞仪检测技术,采用三色标记法,在外周血单个细胞水平上同时进行细胞膜表面(CD4)和细胞内细胞因子[白细胞介素(IL)-4、干扰素(IFN)-γ]的测定,检测33例活动期RA患者和16名正常对照者外周血中T细胞亚群(CD3+/CD4+/CD8+T细胞)及Th细胞亚群的比例;并分析早期RA组(病程≤2年,17例)与非早期RA组(病程>2年,16例),骨侵蚀组(19例)与无骨侵蚀组(14例),类风湿因子(RF)阳性组(23例)与RF阴性组(10例)Th细胞亚群的比例。结果①与正常对照组相比,RA组外周血CD3+CD4+T淋巴细胞升高(P<0.05);Th0、Th1细胞的比例降低(P<0.05);T细胞亚群、Th细胞亚群变化与RA疾病活动相关;②与非早期RA组相比,早期RATh1细胞、Th1/Th2比值升高,Th2降低(P<0.05),早期RA患者Th1细胞比例与血沉、C-反应蛋白、晨僵时间呈正相关;非早期RA患者Th2细胞比例与血沉、晨僵时间呈正相关;③与无骨侵蚀组比较,有骨侵蚀组Th1细胞、Th1/Th2明显降低,Th2细胞升高(P<0.05);④RF阳性组与阴性组间Th细胞亚群及Th1/Th2比值差异均无统计学意义。结论CD4+T细胞在RA的发病机制中起着重要的作用,RA外周血中存在着Th细胞亚群的不平衡,Th细胞失衡的模式在RA的病程中并不是固定的,早期RA外周血以Th1细胞为主,慢性RA则以Th2细胞相对占优势,并与疾病的活动性、骨侵蚀有密切关系。     

过敏性紫癜患儿淋巴细胞亚群的变化及意义

目的研究过敏性紫癜(HSP)患儿淋巴细胞亚群的变化及其临床意义。方法收集45例HSP患儿(A组),其中肾炎型15例(A1组),非肾炎型30例(A2组);另选25例健康儿童为对照组(C组)。采用流式细胞术检测外周血中CD3+、CD3+CD4+、CD3+CD8+、CD3-CD19+、CD3-CD19+CD23+以及CD3-(CD16+CD56+)的表达水平。结果与C组相比,A组CD3+T细胞数量、CD4+T细胞数量、CD4/CD8比例、CD3-(CD16+CD56+)NK细胞数量均下降(P<0.05),而CD3-CD19+B细胞及CD3-CD19+CD23+B细胞数量明显增加(P<0.05),其中A1组上述指标变化较A2组更为显著(P<0.05)。结论 HSP患儿T、B和NK细胞数量和功能发生明显变化,表明免疫功能紊乱可能是导致肾脏损伤的重要原因之一。     

Shikonin attenuates hyperhomocysteinemia-induced CD4E^+T cell inflammatory activation and atherosclerosis in ApoE^−/− mice by metabolic suppression

T cell metabolic activation plays a crucial role in inflammation of atherosclerosis.Shikonin(SKN),a natural naphthoquinone with anti-inflammatory activity,has shown to exert cardioprotective effects,but the effect of SKN on atherosclerosis is unclear.In addition,SKN was found to inhibit glycolysis via targeting pyruvate kinase muscle isozyme 2(PKM2).In the present study,we investigated the effects of SKN on hyperhomocysteinemia(HHcy)-accelerated atherosclerosis and T cell inflammatory activation in ApoE^−/− mice and the metabolic mechanisms in this process.Drinking water supplemented with Hcy(1.8 g/L)was administered to ApoE^−/− mice for 2 weeks and the mice were injected with SKN(1.2 mg/kg,i.p.)or vehicle every 3 days.We showed that SKN treatment markedly attenuated HHcy-accelerated atherosclerosis in ApoE^−/− mice and significantly decreased inflammatory activated CD4^+T cells and proinflammatory macrophages in plaques.In splenic CD4^+T cells isolated from HHcy-ApoE^−/− mice,SKN treatment significantly inhibited HHcy-stimulated PKM2 activity,interferon-γsecretion and the capacity of these T cells to promote macrophage proinflammatory polarization.SKN treatment significantly inhibited HHcy-stimulated CD4^+T cell glycolysis and oxidative phosphorylation.Metabolic profiling analysis of CD4^+T cells revealed that Hcy administration significantly increased various glucose metabolites as well as lipids and acetyl-CoA carboxylase 1,which were reversed by SKN treatment.In conclusion,our results suggest that SKN is effective to ameliorate atherosclerosis in HHcy-ApoE^−/− mice and this is at least partly associated with the inhibition of SKN on CD4^+T cell inflammatory activation via PKM2-dependent metabolic suppression.     

The Interaction of Maintenance Interferon with Cytolytic Cells in Patients with Multiple Myeloma Who Responded to Cytotoxic Chemotherapy

Study Objective . To determine the long-term effects of maintenance interferon on CD56+ and CD3+ cell activity. Design . Prospective phase II trial. Setting . Tertiary medical center and level 2 Veterans Administration hospital. Patients . Seven patients (age 45–74 yrs) with multiple myeloma who had reached the plateau phase from cytotoxic chemotherapy, and seven age- and sex-matched controls. Interventions . All patients were given interferon-α2b 3 × 10⁶ U/m² 3 times/week. Measurements and Main Results . The CD56+, CD3+, and CD16+ counts were determined by flow cytometry in both peripheral blood and bone marrow. Natural killer (NK) cell functional activity was determined by a ⁵¹chromium release assay. Monocyte cell numbers were determined from the white blood cell count with differential. Interleukin-6 (IL-6) concentrations were determined by a commercially available enzyme-linked immunosorbent assay. During the 24-week study, the peripheral blood CD3+ and monocyte counts in patients with myeloma remained constant (p>0.39) but their absolute CD56+ counts decreased significantly (p=0.05). In peripheral blood, CD56+, CD16-, CD3- was the predominant phenotype in patients. The predominant phenotype in bone marrow was CD56+, CD16-, CD3+ at baseline but changed to CD56+, CD16-, CD3- by week 24. The cytolytic activity of NK cells significantly increased in bone marrow (p=0.05) whereas it remained stable in the peripheral blood (p=0.55), but only half that of the controls. Concentrations of IL-6 did not increase significantly during the study. Conclusion . In peripheral blood, NK cell activity remained stable in patients but was significantly lower than that in controls, probably secondary to the predominance of the CD56+, CD16-, CD3- phenotype in the patients. In contrast, NK cell activity increased significantly in bone marrow despite the predominance of the CD56+, CD16-, CD3- phenotype by week 24.     

类风湿关节炎合并肺部感染患者外周血T淋巴细胞和NK细胞水平及其临床意义

目的探究类风湿关节炎(RA)合并肺部感染患者外周血T淋巴细胞和自然杀伤细胞(NK细胞)的水平及其临床意义。方法选取48例RA合并肺部感染患者作为RA合并感染组,64例RA未合并肺部感染患者作为RA未合并感染组,另选取同期于本院健康体检中心进行体检的30例健康成年人作为对照组。比较三组外周血T淋巴细胞亚群及NK细胞水平,比较稳定期与活动期RA合并与未合并肺部感染患者的T淋巴细胞亚群及NK细胞水平。结果RA合并感染组CD3⁺(641.21±438.08)个/μl、CD4⁺(171.58±96.42)个/μl、CD8⁺(215.48±110.16)个/μl、CD4⁺/CD8⁺(0.82±0.26)、NK细胞(26.57±4.88)个/μl;RA未合并感染组CD3⁺(1051.36±434.65)个/μl、CD4⁺(308.07±101.69)个/μl、CD8⁺(324.17±108.16)个/μl、CD4⁺/CD8⁺(0.96±0.24)、NK细胞(40.52±8.92)个/μl;对照组CD3⁺(1403.00±402.77)个/μl、CD4⁺(610.07±82.58)个/μl、CD8⁺(532.47±168.45)个/μl、CD4⁺/CD8⁺(1.35±0.21)、NK细胞(365.15±117.61)个/μl。RA合并感染组、RA未合并感染组CD3⁺、CD4⁺、CD8⁺、CD4⁺/CD8⁺、NK细胞水平均低于对照组,差异有统计学意义(P<0.05)。RA合并感染组CD3⁺、CD4⁺、CD8⁺、CD4⁺/CD8⁺、NK细胞水平均低于RA未合并感染组,差异有统计学意义(P<0.05)。稳定期RA合并肺部感染患者CD3⁺、CD4⁺、CD8⁺、CD4⁺/CD8⁺、NK细胞水平均低于稳定期RA未合并肺部感染患者,差异有统计学意义(P<0.05);活动期RA合并肺部感染患者CD3⁺、CD4⁺、CD8⁺、CD4⁺/CD8⁺、NK细胞水平均低于活动期RA未合并肺部感染患者,差异有统计学意义(P<0.05)。结论合并肺部感染的RA患者T淋巴细胞、NK细胞明显偏低,T淋巴细胞及NK细胞可能在一定程度上对RA合并肺部感染发挥一定的预测价值,指导临床诊疗。     

乙型肝炎患者外周血淋巴细胞表达的变化

目的 分析乙型肝炎患者外周血淋巴细胞亚群的表达.方法 对112例乙型肝炎患者采用荧光定暈PCR技术和流式细胞术分别检测血中HBV DNA及外周血淋巴细胞亚群CD3~+T细胞、CD4~+T细胞、CD8~+T细胞、CD3~-/CD16~+CD56~+(NK细胞)、CD3~- CD19~+(B细胞)表达百分比,进行各淋巴细胞亚群百分比统计学分析.结果 与急性乙型肝炎(AHB)组比较,慢性乙型肝炎(CHB)组、肝炎肝硬化(LC)组CD3~+T细胞、CD4~+T细胞、CD8~+T细胞、CD4~+/CD8~+比值均有显著性下降,LC组下降最显著(P<0.01).而LC组B细胞百分比较CHB、AHB组高(P<0.01).NK细胞百分比较CHB、AHB组均存在降低趋势(P<0.01).结论 乙型肝炎患者体内存在T细胞亚群失衡和细胞免疫功能紊乱;外周血T细胞亚群随病情进展而减少.     

Different roles of IL-15 from IL-2 in differentiation and activation of human CD3+CD56+ NKT-like cells from cord blood in long term culture

The abundantly available source of stem cells and the low incidence of graft-versus-host disease (GVHD) made cord blood an attractive alternative source of hematopoietic stem cells for transplantation. Besides T cell and NK cell, NKT cell played an important role in low incidence of GVHD during allogeneic transplantation. IL-2 and IL-15 can stimulate T cell and NK cell proliferation, survival and activation in vitro. But they exhibited different effects on the GVHD during allogeneic transplantation. In this study, we explored the different effects of exogenous IL-2 and IL-15 on the expansion of CD3+CD56+ NKT-like cells by in vitro long term culture of cord blood mononuclear cells (CBMCs). The results showed that CD3+CD56+ NKT-like cells were derived from CD34-CD56- CBMCs and IL-2 improved CD3+CD56+ NKT-like cell expansion more strongly than IL-15. Interestingly, CD3+CD56+ NKT-like cells from IL-15-cocultured CBMCs had significantly lower apoptotic frequency and higher levels of activation markers (CD161, CD25, and IFN-gamma) than those from IL-2-cocultured CBMCs. The anti-apoptotic and activating effects of IL-15 on CD3+CD56+ NKT-like cells from CBMCs might possibly explain the pathogenic role of IL-15 in GVHD during allogeneic transplantation.     

肾虚大鼠子宫内膜容受障碍免疫学机制的研究

目的建立肾虚型子宫内膜容受障碍大鼠模型,探讨其容受障碍的免疫学机制。方法以羟基脲建立肾虚型大鼠模型,比较模型大鼠与正常雌性大鼠动情期外周血自然杀伤（NK）细胞CD56＋CD16＋、CD56＋CD16、CD56CD16＋亚群水平,白细胞介素-2（IL-2）、白血病抑制因子（LIF）水平,以及内膜IL-2、LIF、各亚群NK细胞表达。大鼠羟基脲造模后妊娠第11天,比较其与正常妊娠大鼠外周血NK细胞、IL-2和LIF的量,以及蜕膜中IL-2、LIF、各亚群NK细胞表达。结果模型组大鼠外周血CD56CD16＋较正常大鼠明显增加、CD56＋CD16/CD56CD16＋明显减少（P〈0.05）;内膜CD56＋CD16＋、CD56＋CD16均明显减少（P〈0.05）,LIF明显减少（P〈0.05）;造模大鼠妊娠后,蜕膜LIF较正常妊娠大鼠明显减少（P〈0.05）。结论羟基脲致肾虚型大鼠模型子宫内膜容受障碍,其致病机制是全身和局部免疫功能异常,可影响妊娠结局。     

Effects of opioid therapy on human natural killer cells

Opioid compounds, such as morphine, induce powerful analgesic effects and are extensively used clinically to treat a wide variety of pain. The aim of our study was to evaluate the impact of opioid therapy on phenotype and function peripheral blood NK cells. The patients were referred to three Italian pain therapy centers (Milan, Pavia, Piacenza) for chronic pain in neuropathic or mixed somatic components. The patients were between 18 and 75 years old and were of Caucasian ethnicity. We studied the expression of activating and inhibitory NK receptors to discriminate NK subsets with different CD56 surface expression intensities (CD56^bright and CD56^dull NK cells). The flow cytometry analysis of the NK cells was at normal levels in peripheral blood lymphocytes with fewer CD56^bright compared to the CD56^dull NK cell subset when compared to blood from drug free donors. Furthermore, the cytolytic activity of in vitro patient NK cells analyzed was not lower, as would be expected from the regular expression of activating NK receptors for both subsets. Taken together, these data indicate that NK cells from opioid treated patients do not show any signs of NK cell immune-suppression.     

自身免疫相关疾病患者外周血淋巴细胞亚群检测及其意义

目的探讨自身免疫相关疾病患者淋巴细胞亚群的变化特点。方法采用流式细胞术检测23例自身免疫病患者及20例正常人的外周血中T淋巴细胞(CD3+细胞)、辅助性T细胞(CD4+细胞)、T抑制性细胞毒细胞(CD3+/CD8+)、NK细胞(CD3-/CD16+56)和NKT细胞(CD3+/CD16+56),对两者百分比进行比较分析。结果患者组中T抑制性细胞毒细胞(CD3+/CD8+)的百分比和绝对值高于正常对照组(P<0.05)。而患者组中CD4/CD8数值上低于正常对照组,但无明显差异。NK细胞(CD3-/CD16+56)的百分比和绝对值明显低于对照(P<0.01),有显著统计学差异。结论可通过对淋巴细胞亚群的检测了解自身免疫病在其发生发展的过程中免疫系统的变化,并为采用的相关治疗提供依据。     

慢性乙型肝炎病毒感染对外周血单个核细胞中凋亡分子表达的影响及其与免疫功能的相关性

目的 研究慢性乙型肝炎病毒(HBV)感染对外周血单个核细胞中凋亡分子表达的影响及其与免疫功能的相关性.方法 选择76例慢性乙型肝炎(CHB)患者和体检的54例健康志愿者,分别作为CHB组和对照组,采集血清并测定凋亡分子含量、采集外周血单个核细胞并测定凋亡分子表达量以及免疫细胞含量.结果 CHB组患者血清中凋亡分子Fas、FasL、Caspase-3、Caspase-6、Caspase-8的含量以及外周血单个核细胞中Fas、FasL、Caspase-3、Caspase-6、Caspase-8的mRNA含量均显著高于对照组;CHB组患者外周血中CD3+ CD4+T细胞、CD3+ CD8+T细胞、CD16+ CD56+ NK细胞的百分比及CD4+/CD8+的比例均显著低于对照组;外周血单个核细胞中Fas、FasL、Caspase-3、Caspase-6、Caspase-8的mRNA含量与CD3+ CD4+T细胞、CD3 +CD8+T细胞、CD16+ CD56+自然杀伤(NK)细胞的百分比呈负相关.结论 慢性HBV感染能够增加外周血单个核细胞中凋亡分子的表达,进而造成T淋巴细胞和NK细胞凋亡、抑制细胞免疫应答和非特异性免疫应.