慢性髓系白血病患者外周血T淋巴细胞亚群和NK细胞检测的临床意义

目的 研究不同分期慢性髓系白血病患者外周血T淋巴细胞亚群、NK细胞的变化特点,以及应用伊马替尼治疗后获得完全细胞遗传学反应(complete cytogenetic reponse,CCyR)患者淋巴细胞亚群表达情况.方法 选取我院诊治40例慢性髓系白血病患者,其中急变期9例,慢性期31例.采用流式细胞术检测外周血T淋巴细胞亚群、NK细胞水平,并与正常对照组进行比较.结果 初治慢性期、急变期CML患者外周血CD3+、CD4+、CD8+T细胞百分率及CD4+/CD8+比值均低于正常对照组,且急变期CD3+、CD4+T细胞百分率及CD4 +/CD8+比值下降尤为突出(P＜0.01);初治慢性期患者NK细胞百分率与正常对照组相比无差异,而急变期患者低于正常对照组(P＜0.05).与正常组对比,伊马替尼治疗首次获得完全细胞遗传学反应患者仅CD4+T细胞百分率降低,差异具有统计学意义(P＜0.05);但获得完全细胞遗传学反应后应用伊马替尼治疗大于12月患者,CD3+、CD4+T细胞百分率及CD4 +/CD8+比值较正常对照组均有所下降(P＜0.05).与治疗前相比,治疗首次获得完全细胞遗传学反应患者CD3+、CD4+T细胞百分率升高(P＜0.05),而缓解后应用伊马替尼治疗大于12月患者T淋巴细胞亚群无改变(P＞0.05);各组的NK细胞百分比无差异(P＞0.05).初诊CML患者、急变期CD4+/CD8+的比值与BCR-ABLl/ABL1的比值呈负相关.结论 CML患者存在细胞免疫调节功能异常,且机体免疫功能与疾病分期密切相关.伊马替尼治疗初次获得完全细胞遗传学反应患者细胞免疫功能得到改善,但长期应用抑制患者细胞免疫功能.     

结核性胸膜炎合并慢性阻塞性肺疾病患者免疫功能的变化及意义

目的 通过观察T淋巴细胞亚群、B细胞、NK细胞活性来探讨结核性胸膜炎合并慢性阻塞性肺疾病(COPD)患者免疫功能变化.方法 采用流式细胞术分别测定45例结核性胸膜炎合并COPD患者(研究组)、45例COPD患者(COPD对照组)和45例健康体检者(健康对照组)外周血T淋巴细胞亚群、B细胞和NK细胞水平.结果 研究组CD3+、CD4+、CD4+/CD8+、B细胞和NK细胞表达率降低,与健康对照组差异有统计学意义(P ＜0.05);COPD对照组CD3+、CD4+、CD4+/CD8+、B细胞和NK细胞表达率与健康对照组差异有统计学意义(P＜0.05);研究组与COPD对照组的差异无统计学意义.结论 结核性胸膜炎合并COPD患者免疫功能明显低于正常健康人群,增强免疫治疗非常必要.     

不同宫颈癌临床分期患者外周血中T淋巴细胞及NK细胞的表达分析

目的分析宫颈癌患者外周血中T淋巴细胞及其亚群以及NK细胞的表达情况。方法前瞻性分析145例在我院就诊的宫颈癌患者的临床资料,按照宫颈癌FIGO临床分期差别分为:宫颈癌Ⅰ期38例、宫颈癌Ⅱ期42例、宫颈癌Ⅲ期35例、宫颈癌Ⅳ期30例;同期选择体检正常女性30例作为对照组。应用流式细胞仪检测各组患者外周血CD3^+、CD4^+、CD8^+T细胞亚群、调节性T细胞(Treg)以及NK细胞数量,同时计算各亚群的比例以及Treg占CD4^+T细胞的比例。应用多元Logistic回归分析评估各细胞亚群数量及比例与宫颈癌临床分期的相关性。结果与对照组相比,宫颈癌患者CD3^+T细胞、CD4^+T细胞、NK细胞数量以及CD4^+/CD8^+比值均较低,Treg/CD4^+比值较高(均P <0.05),而CD8^+T细胞数量差异无统计学意义(均P>0. 05)。随宫颈癌病理严重程度递增,CD3^+T细胞、CD4^+T细胞、NK细胞数量以及CD4^+/CD8^+比值逐步降低,Treg/CD4^+比值逐步增高(均P <0.05),而CD8^+T细胞数量差异无统计学意义(均P>0.05)。多元Logistic回归分析显示,Treg/CD4^+比值是宫颈癌临床分期的危险因素,CD4^+T细胞、CD4^+/CD8^+比值及NK细胞是其保护性因素(均P<0.05)。结论宫颈癌患者细胞免疫功能均不同程度降低,晚期患者降低最显著。检测T淋巴细胞亚群及NK细胞可用于宫颈癌患者免疫监测,为临床治疗及预后评估提供参考。     

多发性骨髓瘤患者外周血淋巴细胞亚群分析及与预后因子的相关性

目的 通过对多发性骨髓瘤(MM)患者外周血淋巴细胞亚群的检测以评价MM患者机体的免疫功能状态.方法 采用流式细胞术检测36例MM患者和25例健康志愿者外周血T、B淋巴细胞、NK细胞及CD4+CD25T细胞的表达.结果 与正常对照组相比,MM患者外周血的CD4、CD19细胞的表达显著下调,CD8细胞的表达显著上调,CD4/CD8比值则显著降低(P＜0.05或＜0.01);MM患者外周血的CD4+CD25T细胞占CD3+T细胞的比例明显增高(P＜0.01),且与血清中的β2-MG浓度成正相关(γ=0.56,P＜0.05).结论 MM患者体内存在淋巴细胞亚群的异常表达、CD4+CD25+Treg细胞的异常扩增,可能是MM患者体内广泛存在免疫缺陷的一个主要原因.     

重型乙型肝炎前期患者外周血免疫活性细胞的特点

目的 分析重型乙型肝炎前期(以下简称重肝前期)患者外周血免疫活性细胞的特点.方法 选取重肝前期患者48例,慢性乙型肝炎患者35例,健康志愿者20例,采用流式细胞仪检测外周血淋巴细胞CD3+、CD3+/CD4+、CD3 +/CD8+、CD4 +/CD25 +/CD45+等亚群表达百分比,计算各淋巴细胞亚群绝对值,并进行统计学分析.结果 与慢性乙肝组及健康对照组相比,重肝前期组CD3+T细胞、CD8+T细胞、CD4+ CD25+调节性T细胞(Tregs)的绝对值均明显下降(P＜0.01或P＜0.05);重肝前期组CD4+T细胞绝对值与慢性乙肝组差异无统计学意义(P＞0.05),但CD4+T细胞百分率明显高于慢性乙肝组(P＜0.05).此外,CD4 +/CD8+比值各组间存在显著差异,重肝前期组显著高于慢性乙肝组和健康对照组(P＜0.01或P＜0.05).结论 重型乙型肝炎前期存在一定程度的细胞免疫功能紊乱,其特征为CD4+T细胞占优势,CD8+T细胞和CD4+ CD25+ Tregs绝对值下降.     

宫颈癌患者外周血T淋巴细胞及NK细胞的检测及其临床意义

为探讨宫颈癌患者外周血T淋巴细胞亚群和NK细胞活性检测的临床意义,采用流式细胞仪测定宫颈癌患者外周血T淋巴细胞亚群和NK细胞活性,以正常人作对照分析。结果表明,宫颈癌患者外周血CD3＋、CD3＋CD4＋、NK细胞数量及CD3＋CD4＋/CD3＋CD8＋比值较正常对照组均明显下降（P〈0.05）,而CD3＋CD8＋细胞水平显著升高。外周血T淋巴细胞亚群和NK细胞数量的改变与宫颈癌临床病理分期有关,分期越晚,CD3＋细胞、CD3＋CD4＋细胞、CD3＋CD4＋/CD3＋CD8＋细胞比值及NK细胞数量越低,CD3＋CD8＋细胞水平越高;Ⅰ、Ⅱ期宫颈癌患者与Ⅲ、Ⅳ期患者之间有显著差异（P〈0.05）。实验结果提示,宫颈癌患者细胞免疫功能低下,且临床病理分期越晚,其免疫功能越低,检测T淋巴细胞亚群、NK细胞可用于宫颈癌患者的免疫监测。     

婴幼儿重症和非重症肺炎淋巴细胞亚群的差异分析

目的:观察重症肺炎和非重症肺炎患儿淋巴细胞亚群水平,探讨患儿的细胞免疫功能变化并为临床治疗提供参考。方法:收集重症肺炎患儿27例、非重症肺炎(普通肺炎)患儿28例以及20例健康对照,采用流式细胞术检测研究对象外周血中CD3~+T、CD3~+CD4~+T、CD3~+CD8~+T、CD19~+B、CD16~+CD56~+NK细胞的水平,并进行比较分析。结果:重症肺炎组CD3~+T、CD3~+CD4~+T、CD3~+CD8~+T淋巴细胞及NK细胞比例明显低于健康对照(P0.01,P0.05,P0.01,P0.05),而CD4/CD8比值、CD19~+B淋巴细胞比例则显著高于健康对照组(P0.05,P0.01);非重症肺炎组CD3~+CD8~+T淋巴细胞低于健康对照(P0.01),而CD19~+B淋巴细胞比例则显著高于健康对照组(P0.01);与非重症肺炎组相比,重症肺炎组CD3~+T、CD3~+CD8~+T淋巴细胞比例显著降低(P0.01),而CD19~+B淋巴细胞比例则明显升高(P0.01)。结论:重症与非重症肺炎患儿机体存在明显的细胞免疫功能紊乱,重症肺炎患儿的细胞免疫功能受损更为严重,为临床评估病情及免疫治疗提供一定的理论依据。     

新辅助化疗对局部进展期乳腺癌患者T淋巴细胞亚群及NK细胞免疫功能的影响

目的:探讨局部进展期乳腺癌患者新辅助化疗前、后T淋巴细胞亚群及NK细胞免疫功能的变化。方法:采用流式细胞术检测54例局部进展期乳腺癌患者新辅助化疗前后的静脉血T淋巴细胞亚群及NK细胞免疫功能。美国癌症联合会(American Joint Commitree on Cancer,AJCC)肿瘤分期为Ⅱb期(仅T3N0M0)和Ⅲ期(不包括N3),静脉血于第1周期新辅助化疗治疗前及第3周期化疗后21日抽取,淋巴细胞亚群检测包括:T(CD3+,CD4+,CD8+),NK(CD56+,CD16+),经过3周期新辅助化疗CEF方案(表柔比星、环磷酰胺和5-氟尿嘧啶),根据新辅助化疗临床效果评价分为2组,化疗有效组38例(CR和PR),化疗无效组16例(SD和PD),并与正常体检健康者(40例)作比较。结果:乳腺癌患者治疗前CD4+、CD4+/CD8+明显低于对照组(P<0.01),NK细胞明显低于对照组(P<0.05),新辅助化疗后,有效组总CD3+、CD4+、CD4+/CD8+、NK细胞较治疗前均显著升高(P<0.05),CD8+降低(P<0.05);无效组CD3+、CD4+/CD8+及NK细胞较治疗前显著降低(P<0.05),而CD8+升高(P<0.05)。结论:局部进展期乳腺癌患者免疫功能低下,有效的辅助化疗能提高患者的免疫功能,定期监测免疫功能对指导临床治疗有意义。     

黄芪对小鼠淋巴细胞及其表面分子的调节作用

目的探讨黄芪灌胃给药C57BL/6小鼠后脾脏中淋巴细胞及其相关表面分子的变化。方法将黄芪通过灌胃给药小鼠,6 d后将对照组和黄芪组小鼠的脾细胞进行分离,制备单细胞悬液,然后通过流式细胞术检测小鼠B细胞、T细胞、CD8+T细胞和NK细胞及其相关表面分子CXCR3、CD69和CD62L的百分比含量。结果黄芪组小鼠脾脏中B细胞和NK细胞的百分比显著升高(P0.05),而T细胞和CD8+T细胞的百分比显著降低(P0.05和P0.01)。黄芪组CXCR3分子在NK细胞中的表达明显高于对照组(P0.05);黄芪组CD69分子在CD8+T细胞和NK细胞中的表达均明显高于对照组(P0.05);黄芪组CD62L分子在B细胞、T细胞、CD8+T细胞和NK细胞中的表达均显著低于对照组(均P0.01)。结论 C57BL/6小鼠在给药黄芪后,其脾脏中上述淋巴细胞及其相关表面分子可发生不同程度的变化,提示黄芪对小鼠的免疫功能可以产生多种调节作用。     

支气管肺泡灌洗液淋巴细胞亚群对肺部病变的诊断意义

目的 比较肺部感染,肺恶性肿瘤及间质性肺病患者支气管肺泡灌洗液细胞计数及淋巴细胞亚群的表达水平,评价其临床意义.方法 选取2017年5月至2019年12月收治的98例患者,其中肺部感染56例,肺恶性肿瘤18例,间质性肺疾病24例,检测肺泡灌洗液计数及淋巴细胞亚群水平.结果 肺部感染组中性粒细胞百分比及总NK细胞百分比显著升高,巨噬细胞百分比显著减少,与其他两组比较差异有统计学意义.肺恶性肿瘤组CD3+T淋巴细胞、CD4+T淋巴细胞及CD4+/CD8+T淋巴细胞比值显著减低,与感染组相比,差异有统计学意义(P＜0.05).间质性肺病组CD8+T淋巴细胞及抑制性T淋巴细胞(CD8+CD28-)显著升高,与其他两组相比,差异有统计学意义(P＜0.05).结论 检测支气管肺泡灌洗液细胞分类及淋巴细胞亚群水平,对于鉴别肺部病变、评估免疫功能及预后有一定的临床价值.     

Contribution of NK, NK T, gamma delta T, and alpha beta T cells to the gamma interferon response required for liver protection against Trypanosoma cruzi

In the present work, we show that intracellular Trypanosoma cruzi is rarely found in the livers of acutely infected mice, but inflammation is commonly observed. The presence of numerous intrahepatic amastigotes in infected gamma interferon (IFN-gamma)-deficient mice corroborates the notion that the liver is protected by an efficient local immunity. The contribution of different cell populations was suggested by data showing that CD4- and CD8-deficient mice were able to restrain liver parasite growth. Therefore, we have characterized the liver-infiltrating lymphocytes and determined the sources of IFN-gamma during acute T. cruzi infection. We observed that natural killer (NK) cells increased by day 7, while T and B cells increased by day 14. Among CD3+ cells, CD4+, CD8+, and CD4- CD8- cell populations were greatly expanded. A large fraction of CD3+ cells were positive for PanNK, a beta1 integrin expressed by NK and NK T cells. However, these lymphocytes were not classic NK T cells because they did not express NK1.1 and showed no preferential usage of Vbeta8. Otherwise, liver NK T (CD3+ NK1.1+) cells were not increased in acutely infected mice. The majority of PanNK+ CD4+ and PanNK+ CD8+ cells expressed T-cell receptor alphabeta (TCRalphabeta), whereas PanNK+ CD4- CD8- cells were positive for TCRgammadelta. In fact, gammadelta T cells showed the most remarkable increase (40- to 100-fold) among liver lymphocytes. Most importantly, intracellular analysis revealed high levels of IFN-gamma production at day 7 by NK cells and at day 14 by CD4+, CD8+, and CD4- CD8- TCRgammadelta+ cells. We concluded that NK cells are a precocious source of IFN-gamma in the livers of acutely infected mice, and, as the disease progresses, conventional CD4+ and CD8+ T cells and gammadelta T cells, but not classic NK-T cells, may provide the IFN-gamma required for liver protection against T. cruzi.     

Phenotype analysis of tumour-infiltrating lymphocytes and lymphocytes in peripheral blood in patients with renal carcinoma

INTRODUCTION: When checking tumour growth, a number of observations indicate that the immune system plays a significant role in patients with renal cell carcinoma (RCC). Infiltration by lymphocytes (tumour infiltrating lymphocytes, TILs) is more prevalent in RCC than any other tumours. T lymphocytes are the dominant population of TIL cells. Views concerning the role of T lymphocytic subpopulations, B lymphocytes and NK cells in an anti-tumour response are not established. AIM: The aim is to determine the phenotype and activation of T and B lymphocytic subpopulations and NK cells and to compare their representation in tumour stroma and peripheral blood lymphocytes (PBL) in patients with RCC. MATERIAL AND METHODS: Samples of peripheral blood taken from the cubital and renal veins and tumour stroma cells were obtained from 44 patients in the course of their surgeries carried out due to primary RCC. TILs were isolated from mechanically disintegrated tumour tissue. Immunophenotype multiparametric analysis of PBL and TILs was carried out. Their surface and activation characteristics were determined by means of flow cytometer. RESULTS: CD3+ T lymphocytes (69.7%) were the main population of TILs. The number of CD3+/CD8+ T lymphocytes was significantly higher in TILs, 42.6% (p < 0.01), while CD4+ T lymphocytes were the majority population in peripheral blood, 41.35% (p < 0.001). The representation of CD3+/69+ T lymphocytes was significantly higher in TILs, 32.9%, compared to PBL (p < 0.001). On the contrary, the numbers of CD3+/CD25+, CD8+/57+ and CD4+/RA+ (naive CD4+ T lymphocytes) were higher in PBL (p < 0.001). The differences in representation of (CD3-/16+56+) NK cells and CD3+/DR+ T cells in TILs and PBL were not significant. CONCLUSION: The above-mentioned results prove that the characteristics and intensity of anti-tumour responses are different in compared compartments (tumour/PBL). CD3+/CD8+ T lymphocytes are the dominant lymphocytic population of TILs. The knowledge of the phenotype and functions of effector cells, which are responsible for anti-tumour response, are the basic precondition for understanding the anti-tumour immune response and the cause of its failure.     

NK cells, displaying early activation, cytotoxicity and adhesion molecules, are associated with mild dengue disease

During the innate immune response against infections, Natural Killer (NK) cells are as important effector cells as are Cytotoxic T lymphocytes (CTL) generated after antigenic stimulation in the adaptative response. NK cells increase in numbers, after viral infection or vaccination. We investigated the NK cell and CD8 T lymphocyte status in 55 dengue infected patients. The NK (CD56+CD3-) and CD56+ T cell (CD56+CD3+) rates rise during the acute phase of disease. The majority of NK cells from dengue patients display early markers for activation (CD69, HLA-DR, and CD38) and cell adhesion molecules (CD44, CD11a) during the acute phase of disease. The intracellular cytotoxic granule, TIA-1, is also up-regulated early in NK cells. Most of these markers appear also on CD8+ T lymphocytes but during the late acute phase. Circulating IL-15 is elevated in a significant number of patients during early acute infection and its values were statistically correlated with NK frequencies and cytotoxic markers on NKs. We have therefore shown that dengue virus infection is very likely stimulating a cytotoxic response that may be efficient in controlling the virus in synergism with CD8+ T lymphocytes. Interestingly, the heightened CD56+CD3-, CD56+CD3+, CD56+TIA-1+ and CD56+CD11a+ cell rates are associated with mild dengue clinical manifestations and might indicate a good prognosis of the disease.     

Control of NK cell functions by CD4+CD25+ regulatory T cells

Regulatory T cells (Treg) are key players in the maintenance of peripheral tolerance. As a result of suppressive effects on CD4+ and CD8+ effector T cells, Treg control the adaptive immune system and prevent autoimmunity. In addition, they inhibit B lymphocytes, dendritic cells, and monocytes/macrophages. It is interesting that several recent papers show that CD4+CD25+ Treg are also able to inhibit NK cells. Thus, Treg exert their control on immune responses from the onset (triggering of innate immune cells) to the effector phase of adaptive immunity (B and T cell-mediated responses). That Treg inhibit NK cells suggests that their uncontrolled activation might break self-tolerance and induce "innate" autoimmune pathology. Conversely, Treg-mediated suppression of NK cell functions might have negative effects, as these cells are important in defense against infections and cancer. It is conceivable that Treg might dampen efficient activation of NK cells in these diseases.     

Detection and evaluation of immunofunction of patients with severe fever with thrombocytopenia syndrome

Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by SFTS virus (SFTSV) with a high fatality rate. But the immunofunction was still unclear. The objective of our study was to assess the immunofunction in SFTS patients. Immunofunction test with flow cytometry which contains CD3+, CD4+ and CD8+ T lymphocytes, B cells and NK cells would be used for detecting serum samples collected from 34 SFTS cases and 20 healthy donors. We found that CD3+ and CD4+ T lymphocytes were significantly diminished in SFTS compared to normal control. In contrast, the percentage of NK cells was elevated. Further analysis revealed that the number of CD3+ and CD4+ T lymphocytes showed that there was a more robust pattern of depression in acute phase and severe SFTS infection compared to the patients in recovery phase and mild SFTS infection. But NK cells were significantly increased in acute phase and severe SFTS. They reverted to the near normal levels in convalescent phase. Additionally, the levels of CD3+ and CD4+ T lymphocytes progressively decreased in death group when compared with the survival group, but the level of B cells was higher. The damages of immune system were obvious, and the immune dysfunction might be partly responsible for disease progression of patients with SFTSV infection.     

Evidence for circulating activated cytotoxic T cells in HIV-infected subjects before the onset of opportunistic infections

The activity of both cytotoxic T lymphocyte (CTL) and natural killer (NK) cells were measured cross-sectionally in 43 subjects seropositive for HIV, in 27 HIV- blood donors and in 24 HIV- persons from the Outpatients Clinic for sexually transmitted diseases. CTL activity was evaluated using the HL-60 cells coated with OKT3 as the targets and freshly separated peripheral blood lymphocytes as the effectors. In 20 out of 43 HIV+ subjects, CTL activity was significantly enhanced in comparison to the HIV- subjects. This lytic activity correlated positively with the percentages of CD3+ HLA-DR+, of CD8+ CR3- and of CD57+ CD16- lymphocytes, and was greatly reduced after elimination of CD8+, of HLA-DR+ or of CD57+ cells. The median CTL activity seemed to increase from CDC group II to CDC group IV (Centers for Disease Control classification), but to return back to control levels in those patients with a history of opportunistic infections. NK function in HIV+ subjects was not significantly different from that in the blood donors. In seropositive patients, NK activity correlated positively with the percentages of both CD16+ CD57+ and of CD8+ CR3+ cells and was strongly diminished after elimination of CD16+ or of CD57+ cells. There was no significant change in NK function according to the clinical stage. The data show that circulating CD8+ HLA-DR+ CD57+ T cells in HIV+ subjects are activated cytotoxic T cells and point to progressive (over) activation of this T cell compartment until the onset of opportunistic infections.     

乳腺癌原发灶及腋窝淋巴结中细胞毒性淋巴细胞与临床病理的关系

目的 分析乳腺癌原发灶组织和腋淋巴结中细胞毒性淋巴细胞的数量和状态,并与乳腺癌临床病理特征相比较,探讨其意义.方法 对资料齐全且术前均未接受任何化疗和放疗的74例乳腺癌原发灶及所切除的腋淋巴结进行病理分型及临床病理分期,并分为淋巴结无转移组和有转移组.采用免疫组织化学催化信号放大系统和EnVision法,通过单克隆抗体CD8、粒酶B、穿孔素、CD56的检测,分析肿瘤原发灶及腋淋巴结中细胞毒性淋巴细胞的表型和功能.结果 在肿瘤原发灶组织中CD8+细胞间质明显多于实质,淋巴结无转移组肿瘤局部[(35.7±16.0)个]及腋淋巴结CD8+细.胞数[(53.0±18.2)个]均高于淋巴结有转移组[(23.7±9.6)个和(38.2±12.7)个],肿瘤原发灶CD8+细胞数在5年生存组[(32.9±14.1)个]显著高于死亡组[(20.1±9.9)个].以粒酶B为细胞毒性淋巴细胞活化标记时,细胞毒性淋巴细胞的百分率差异无统计学意义;肿瘤组织和腋淋巴结中CD8+、CD56+细胞数均与临床病理分期无关.与Ⅰ期相比,在Ⅲ+Ⅳ期原发灶组织和腋淋巴结中细胞毒性淋巴细胞的数量显著降低.值得注意的是,在多数情况下,原发灶组织中穿孔素+细胞数量明显低于粒酶B+细胞.结论 在乳腺癌中细胞毒性淋巴细胞对抑制其肿瘤转移、提高患者生存率有一定意义.组织中细胞毒性淋巴细胞功能缺陷可能是影响其发挥抗瘤效应的重要因素.     

多发性骨髓瘤患者淋巴细胞亚群变化对免疫功能的影响研究

目的分析多发性骨髓瘤（MM）患者外周血T 淋巴细胞尧B 淋巴细胞和自然杀伤（NK）细胞的变化遥方法收集69 例 MM 患者及52 例健康体检人员的抗凝血,用流式细胞仪检测外周血淋巴细胞总数（Lym）尧CD3+ T 淋巴细胞尧CD19+ B 淋巴细 胞及CD16+56+NK细胞数量遥结果与对照组比较,MM 组Lym尧CD3+尧CD4+尧CD8+尧CD4+/CD8+尧CD19+等6个项目差异均有 统计学意义（约0.05）,CD16+56+差异无统计学意义（跃0.05）遥结论MM患者在疾病进程中与T淋巴细胞亚群及B淋巴细胞尧 Lym 密切相关,对评价MM 患者的免疫状况尧疾病进展和疗效等方面具有重要作用遥     

中国HIV感染者细胞毒性淋巴细胞内穿孔素的差异性表达

目的 了解中国HIV感染者细胞毒性相关的NK细胞及CD8^＋T细胞内穿孔素表达水平，探讨HIV感染过程中穿孔素表达与机体免疫功能的关系。方法 采集31例未经抗病毒治疗的HIV感染者和经过高效抗逆转录病毒疗法（HAAS）治疗的17例HIV／AIDS患者以及15例健康对照的抗凝全血，应用流式细胞仪胞内染色法检测CD56^＋／CD3^-、CD3^-／CD16^＋NK细胞及CD8^＋／CD3^＋内穿孔素表达的百分数，分析其与NK细胞绝对值、NK细胞百分数、CD4^＋T、CD8^＋T淋巴细胞绝对值及血浆病毒载量的相关性。结果 中国HIV感染者的NK细胞CD56^＋／CD3^-及CD3^-／CD16^＋亚群穿孔素表达百分数（平均13．17％，平均24．05％）高于CD8^＋T细胞穿孔素表达百分数（平均9．03％）；NK细胞内穿孔素表达低于健康对照（P〈0．05，P〈0．05），CD8^＋T细胞内穿孔素表达高于健康对照（P〈0．05）；NK细胞及CD8^＋T细胞内穿孔素表达水平与其绝对计数显著相关，与疾病进展不相关。HAART治疗组NK细胞内穿孔素表达升高，CD8T^＋细胞内穿孔素表达无显著变化。结论 中国HIV感染者NK细胞内穿孔素表达降低，抗病毒治疗后升高；CD8^＋T细胞内穿孔素表达升高，抗病毒治疗后无显著变化。