系统性红斑狼疮患者外周血CD19^(+)CD25^(+)Breg比例和细胞表面PD-1和PD-L1的表达及其与临床指标的相关性

目的 研究程序性死亡蛋白1(PD-1)与其配体PD-L1在系统性红斑狼疮(SLE)患者外周血CD19^(+)CD25^(+)调节性B细胞(Breg)的表达及临床意义。方法收集50例SLE患者和41例健康人(HC)外周血标本,采用流式细胞仪检测外周血中CD19^(+)CD25^(+)Breg的比例,以及CD19^(+)CD25^(+)Breg的PD-1、PD-L1表达,同时采集患者的临床表现和实验室指标等临床信息。使用免疫磁珠分选CD4^(+)T细胞与CD19^(+)B细胞,体外细胞共培养,检测Breg的分化。结果SLE患者活动组外周血中CD19^(+)CD25^(+)Breg比例低于HC,CD25^(+)B细胞PD-1、PD-L1的表达高于HC;SLE患者有胸腔积液、关节炎、C反应蛋白(CRP)上升的患者Breg频率高于对应阴性组;SLE患者有IgM下降、抗核糖核蛋白(RNP)抗体阳性的患者Breg频率低于对应阴性组;SLE患者有感染、发热、关节炎、IgA上升的患者CD19^(+)CD25^(+)PD-1^(+)细胞频率高于对应阴性组;SLE患者有感染、发热、IgA上升的患者CD19^(+)CD25^(+)PD-L1^(+)细胞频率高于对应阴性组;活化的CD4^(+)T细胞有利于CD19^(+)B细胞表面CD25的表达。结论SLE患者外周血中CD19^(+)CD25^(+)Breg降低,但细胞表面PD-1与PD-L1的表达增加,并且与相关临床表现及实验室参数存在一定的关系。活化的CD4^(+)T细胞促进Breg的分化。

CD19^(+)CD24^(hi)CD27^(+)调节性B细胞水平与强直性脊柱炎间的关系探讨

目的:探究CD19^(+)CD24^(hi)CD27^(+)调节性B细胞(Bregs)水平与强直性脊柱炎(AS)的关系。方法:将赣州市人民医院2019年1月至2021年12月间收治的80例AS患者纳为观察组,同期体检合格的健康志愿者60例纳为对照组。根据观察组患者疾病临床分期将其分为进展期及强直期,根据患者疾病活动度将其分为活动组、稳定组,检测并比较观察组及对照组、观察组不同分期患者外周血CD19^(+)CD24^(hi)CD27^(+)Breg占CD19^(+)细胞百分比。分析CD19^(+)CD24^(hi)CD27^(+)Bregs百分比与AS患者病程、晨僵时间、巴斯强直性脊柱炎疾病活动指数评分(BASDAI)、IL-10、血沉(ESR)、C反应蛋白(CRP)及骶髂关节X线片分级等临床特点之间的关系。结果:观察组AS患者外周血CD19^(+)CD24^(hi)CD27^(+)Bregs占CD19^(+)B细胞百分比高于健康对照组,强直期AS患者CD19^(+)CD24^(hi)CD27^(+)Breg占CD19^(+)细胞百分比高于进展期患者,且骨性强直期患者外周血CD19^(+)CD24^(hi)CD27^(+)Breg百分比高于纤维性强直期患者,活动组AS患者外周血CD19^(+)CD24^(hi)CD27^(+)Breg占比高于稳定组,以上差异均有统计学意义(P<0.05)。观察组血清IL-10水平低于对照组,ESR及CRP水平高于对照组,差异有统计学意义(P<0.05)。AS患者外周血CD19^(+)CD24^(hi)CD27^(+)Breg占CD19^(+)B细胞百分比与其BASDAI得分及血清IL-10水平呈正相关,与ESR及CRP水平呈负相关,与患者晨僵时间及髂关节X线分级无明显相关性。结论:AS患者外周血CD19^(+)CD24^(hi)CD27^(+)Breg占CD19^(+)B细胞百分比降低,且其水平与患者疾病分期、活动度及实验室指标IL-10、ESR及CRP间具有一定的相关性。

CD19^(+)CD27^(+)IgD^(+)B细胞与甲状腺相关性眼病患者疾病活动度相关性研究

目的:探讨甲状腺相关性眼病(thyroid-associated ophthalmopathy,TAO)患者外周血CD19^(+)CD27^(+)IgD^(+)B细胞比例变化与病情活动度的关系。方法:采用流式细胞术检测TAO患者和健康对照组CD19^(+)CD27^(+)IgD^(+)B细胞比例,分析TAO患者CD19^(+)CD27^(+)IgD^(+)B细胞比例与健康对照组的差异,并分析CD19^(+)CD27^(+)IgD^(+)B细胞比例与TAO疾病活动度之间的相关性。结果:TAO患者CD19^(+)CD27^(+)IgD^(+)B细胞比例明显低于健康对照(P<0.05);活动性TAO患者CD19^(+)CD27^(+)IgD^(+)B细胞比例细胞显著低于非活动性TAO患者;CD19^(+)CD27^(+)IgD^(+)B细胞比例与TAO患者CAS评分呈显著负相关(r=-0.7128,P<0.001)。结论:TAO患者CD19^(+)CD27^(+)IgD^(+)B细胞比例降低,与疾病活动度呈负相关。

CD4^(+)CD25^(+)Foxp3^(+)Treg及CD19^(+)CD69^(+)B细胞在狼疮性肾炎患者外周血中的水平变化及其与疾病活动度的关系

目的研究CD4^(+)CD25^(+)Foxp3^(+)Treg、CD19^(+)CD69^(+)B细胞在狼疮性肾炎中的水平变化与及其与病活动度的关系。方法选取我院于2018年10月至2020年10月收治的108例狼疮性肾炎患者作为研究组,根据系统性红斑狼疮的疾病活动指数(SLEDAI)分为轻度活动度组(38例)、中度活动度组(44例)、重度活动度组(26例),另选取同期于我院行肾穿刺活检证实为微小病变患者为对照组(50例)。检测受试者外周血中CD4^(+)CD25^(+)Foxp3^(+)Treg、CD19^(+)CD69^(+)B细胞水平,分析各组间细胞水平差异,采用ROC曲线分析CD4^(+)CD25^(+)Foxp3^(+)Treg、CD19^(+)CD69^(+)B细胞诊断狼疮性肾炎的价值,采用Pearson相关性分析各细胞与疾病活动度间的相关性。结果研究组患者外周血CD19^(+)CD69^(+)B细胞、TNF-α、CA199水平均显著高于对照组(P<0.05),而CD4^(+)CD25^(+)Foxp3^(+)Treg明显低于对照组(P<0.05)。不同严重程度狼疮性肾炎患者外周血CD4^(+)CD25^(+)Foxp3^(+)Treg、CD19^(+)CD69^(+)B细胞、TNF-α、CA199水平差异有统计学意义(P<0.05),其中重度组患者外周血CD19^(+)CD69^(+)B细胞、TNF-α、CA199水平最高。Pearson相关性分析显示,CD4^(+)CD25^(+)Foxp3^(+)Treg、CD19^(+)CD69^(+)B细胞分别与SLEDAI评分呈现负、正相关性,相关系数r分别为-0.458、0.468。采用ROC曲线分析显示,CD19^(+)CD69^(+)B细胞、CD4^(+)CD25^(+)Foxp3^(+)Treg诊断狼疮性肾炎的曲线下面积分别为0.801(95%CI=0.722~0.880)、0.839(95%CI=0.775~0.903)。两者联合诊断的曲线下面积为0.885(95%CI=0.826~0.944),高于单独检测(P<0.05)。结论CD4^(+)CD25^(+)Foxp3^(+)Treg、CD19^(+)CD69^(+)B细胞在狼疮性肾炎患者外周血中处于异常水平状态,且水平与疾病活动度相关,两者联合检测可作为诊断狼疮性肾炎的新指标。

An Association between Immunosenescence and CD4^+CD25^+ Regulatory T Cells: A Systematic Review

Objective Age-related increment of the prevalence of CD4^＋CD25^＋ regulatory T （Treg） cells were described controversially, and whether such changes explain immune dysfunction in the elderly is still unclear. The aim of this systematic review is to evaluate the role of the Tregs in immunosenescence. Methods Medline and manual searches were performed to identify all published epidemiological and animal studies investigating the efficacy of the association between immunosenescence and Treg cells. Results It was founded that the frequency, phenotypic characteristics, and number/function of Tregs were altered significantly with aging. Medical conditions in individuals with advanced ageas well as apoptosis intensity of Treg cells had an impact on the accumulation of Tregs which in turn could deteriorate cytotoxic activity of CD8＋ T and NK cells and production of IL-2. The range of immune cells that could be suppressed by Treg cells was quite wide and covered CD4^＋CD25^＋ T cells, NK cells, dendritic cells and even monocytes. These changes were observed both in humans and experimental animals. Besides, it was believed that frequency of Tregs increased with age and was accompanied by intensified suppressive activity for Tregs in patients, for example, with Alzheimer disease （AD） and Parkinson disease （PD）. The impaired condition of CD4＋ T cells, so-called immunosenescence, rendered transplant recipients less responsive to an allogeneic kidney graft, an effect that was limited to transplant recipients who were aged over 60 years. Conclusions Treg cells are associated with immunosenescence. All these changes contribute to the aging-related decline of immune responses and lead to the higher risk of immune-mediated diseases, cancer or infections in aged individuals.

Analysis of CD4^+CD25^+ Regulatory T Cells and Foxp3 mRNA in the Peripheral Blood of Patients with Asthma

The changes of CD4^＋CD25^＋ regulatory T cells （CD4^＋CD25^＋ Treg） and Foxp3 mRNA in peripheral blood mononuclear cells （PBMCs） from patients with asthma were investigated in order to elucidate the possible roles of CD4^＋CD25^＋ Treg in the development of asthma. The peripheral blood samples were collected from 29 healthy controls （normal control group） and 78 patients with asthma which included 30 patients in exacerbation group, 25 patients in persistent group, and 23 patients in remission group. By using flow cytometry and RT-PCR, the CD4^＋CD25^＋ Treg ratio and Foxp3 mRNA in PBMCs were detected. The CD4^＋CD25^＋ Treg ratio and Foxp3 mRNA in PBMCs of exacerbation and persistent groups were lower than that of remission and normal control groups （P〈0.05）. Although the CD4^＋CD25^＋ Treg ratio and Foxp3 mRNA of remission group were also lower than that of normal control group, there was no significant difference between them （P〉0.05）. As compared with persistent group, exacerbation group had lower CD4^＋CD25^＋ Treg ratio and Foxp3 mRNA （P〈0.05）. It was indicated that the decrease of CD4^＋CD25^＋ Treg ratio and its function in PBMCs may be responsible for pathogenesis of asthma.

Depletion of CD4^+CD25^+ regulatory T cells can promote local immunity to suppress tumor growth in benzo[a]pyrene-induced forestomach carcinoma

AIM： To elucidate the distribution of CD4^＋CD25^＋ regulatory T cells （Tregs） in different lymphoid tissues and its local enhancement on tumor growth before and after depletion of CD4^＋CD25^＋ Tregs. METHODS： Female ICR mice were garaged with benzo[a]pyrene （BaP） to induce forestomach carcinoma. CD4^＋CD25^＋ Tregs were intraperitoneally depleted with monoclonal antibody PC61. These mice were divided into BaP-only, BaP ＋ IgG, BaP ＋ PC61, and control groups. The forestomach of mice was dissected for histological analysis, and tunnel test was performed for apoptosis of tumor cells. CD4^＋CD25^＋ Tregs were sorted from different lymphoid tissues and expression of Foxp3, IL-10, and chemokine receptors was analyzed by flow cytometry, semi-quantitative and veal-time polymerase chain reaction. RESULTS： The mice gavaged with only BaP showed increased forestomach papilloma and carcinoma at wk 16 and 32. The proportion of CD4^＋CD25^＋ Tregs was significantly higher in peri-stomach regional lymph nodes than in other lymphoid tissues. These CD4^＋CD25^＋ Tregs in regional lymph nodes expressed higher levels of Foxp3 and IL-10, enriched in the CD62L-subset, and CCR1 and CCR5 chemokine receptors. In mice gavaged with BaP ＋ PC61, the number of tumor nodules and tumor volume decreased significantly with massive infiltrating cells and apoptosis of tumor cells. In the draining regional lymph nodes, the number of CD4^＋CD25^＋ Tregs also decreased significantly. CONCLUSION： Inducible and activated CD4^＋CD25^＋ Tregs in the draining regional lymph nodes suppress host local immunity during tumor growth. Depletion of CD4^＋CD25^＋ Tregs can promote host local immunity to suppress tumor growth.

慢性B淋巴细胞白血病CD4^＋CD25^＋highCD127^Low和CD19^＋-CD23^＋的相关性研究

目的通过研究慢性B淋巴细胞白血病（chronic B cell lymphocytic leukemia，B—CLL）CD4^＋CD25^＋highCDl27^Low和CD19^＋CD23^＋的相关性，探讨CD4^＋CD25^＋highCDl27^Low在B—CLL发生发展过程中的作用。方法将20例初次发病的B—CLL患者按临床分期的不同分为O-II期组、III-IV期组，设立正常对照组，应用流式细胞仪检测各组的研究对象外周血中CD4^＋CD25^＋highCDl27^Low、CD19^＋、CD19^＋CD23^＋的表达量，比较各组间的差异。结果B—CLL O-II期组、III-IV期组患者外周血中CD4^＋CD25^＋highCDl27^Low、CD19^＋、CD19^＋CD23^＋的表达量均明显高于正常对照组；B—CLL患者III-IV期组的CD4^＋CD25^＋highCDl27^Low、CDl9^＋、CDl9^＋CD23^＋表达量明显高于O-II期组；CD4^＋CD25^＋highCDl27^Low、CDl9^＋CD23^＋有明显的正相关性。结论B—CLL患者外周血中CD4^＋CD25^＋highCD127^Low的表达量增高，与CD19^＋、CD19^＋CD23^＋的表达量增高明显相关，可能是B—CLL患者CD19^＋CD23^＋克隆性增生原因之一．

Correlation between CD4^＋CD25^＋Treg Cells and CCR4 in Nasopharyngeal Carcinoma

OBJECTIVE CD4^＋CD25^＋ T regulatory （Treg） cells are a population of T cells which suppress an overactive immune system. CCR4 is a chemokine receptor involved in the recruitment of lymphocytes. Nasopharyngeal carcinoma （NPC） is resistant to immunosurveillance, owing to the increased number of tumor-infiltrating Treg cells which are recruited to the tumor bv CCR4.

CD19^(+)CD24^(+)CD27^(+)调节性B细胞及IL-10、IL-34与系统性红斑狼疮中医证型的关系

目的:探讨CD19^(+)CD24^(+)CD27^(+)调节性B细胞(Bregs细胞)及白细胞介素(IL)-10、IL-34与系统性红斑狼疮(SLE)中医证型的关系。方法:选取2022年4月~2024年4月在本院接受治疗的117例SLE患者为研究组,并纳入同期进行体检的86名健康体检者为对照组,检测对比两组的CD19^(+)CD24^(+)CD27^(+)Bregs细胞中CD24^(high) CD27^(+)比例、CD24^(mid) CD27^(+)比例以及血清IL-10、IL-34水平。另将研究组根据中医辨证分型分为热毒炽盛证、肝肾阴虚证、脾肾阳虚证,检测对比不同中医证型患者间CD24^(high) CD27^(+)比例、CD24^(mid) CD27^(+)比例、IL-10、IL-34、肾功能及系统性红斑狼疮疾病活动指数(SLEDAI)的差异。结果:研究组的CD24^(high) CD27^(+)比例、CD24^(mid) CD27^(+)比例、IL-10、IL-34水平均高于对照组,差异有统计学意义(P<0.05)。117例SLE患者中热毒炽盛证有49例、肝肾阴虚证33例、脾肾阳虚证35例。CD24^(high) CD27^(+)比例、CD24^(mid) CD27^(+)比例、IL-10、IL-34水平及SLEDAI评分均在肝肾阴虚证、脾肾阳虚证、热毒炽盛证中依次上升,差异有统计学意义(P<0.05);脾肾阳虚证患者的血清肌酐、尿素氮、24h尿蛋白定量均高于热毒炽盛证及肝肾阴虚证患者(P<0.05)。结论:SLE患者血清CD19^(+)CD24^(+)CD27^(+)Bregs细胞、IL-10、IL-34水平均与中医证型有关,可作为中医辨证论治的辅助指标。

Foxp^(3+)调节性T细胞、CD19^(+)调节性B细胞水平与浸润性乳腺癌患者临床病理参数、免疫功能指标的相关性研究

目的探讨Foxp^(3+)调节性T细胞(Treg)、CD19^(+)调节性B细胞(Breg)水平与浸润性乳腺癌(IBCA)患者临床病理参数、免疫功能指标的相关性,为临床治疗提供参考。方法选取2019年5月至2022年12月江苏盛泽医院收治的231例IBCA患者为IBCA组,另选取同期收治的116例乳腺纤维腺瘤、导管内乳头状瘤、导管上皮内瘤变患者为非IBCA组,进行回顾性分析。收集IBCA组患者临床资料,比较两组患者Foxp^(3+)Treg、CD19^(+)Breg、免疫功能指标水平,分析IBCA组患者Foxp^(3+)Treg、CD19^(+)Breg水平在不同病理参数乳腺癌中的表达情况,分析IBCA组患者Foxp^(3+)Treg、CD19^(+)Breg水平与临床病理参数、免疫功能指标的相关性。结果231例IBCA患者中,雌激素受体(ER)阳性181例,孕激素受体(PR)阳性130例,Ki67蛋白阳性率≥15%104例,Luminal A型97例,Luminal B型88例,HER2阳性15例,三阴乳腺癌(TNBC)31例。两组患者细胞毒性T(Tc)细胞、B细胞水平比较,差异均无统计学意义(均P>0.05)。IBCA组患者Foxp^(3+)Treg、CD19^(+)Breg、自然杀伤(NK)细胞水平均高于非IBCA组;辅助性T(Th)细胞水平、T细胞水平、CD4^(+)/CD8^(+)T淋巴细胞比值均低于非IBCA组(均P<0.05)。IBCA组患者Foxp^(3+)Treg在Ki-67蛋白阳性乳腺癌、Luminal B型乳腺癌、人表皮生长因子受体2(HER2)阳性乳腺癌、TNBC中均差异表达(均P<0.05);CD19^(+)Breg在Luminal B型乳腺癌、HER2阳性乳腺癌、TNBC中均差异表达(均P<0.05)。IBCA组患者Foxp^(3+)Treg水平与Ki67蛋白阳性率、Luminal B型、HER2阳性、TNBC、NK细胞水平均呈正相关,与Th细胞水平、CD4^(+)/CD8^(+)比值均呈负相关;CD19^(+)Breg水平与Luminal B型、HER2阳性、TNBC、NK细胞水平均呈正相关,与Th细胞水平、CD4^(+)/CD8^(+)比值均呈负相关。结论IBCA患者外周血中Foxp^(3+)Treg、CD19^(+)Breg水平的升高与IBCA分子亚型相关,且存在免疫功能障碍,表现为NK细胞水平上升,Th细胞水平、CD4^(+)/CD8^(+)比值下降。在IBCA患者的综合治疗中,合理调节免疫功能,有助于延缓疾病进展,改善预后。

CD4^+CD25^(high) Regulatory Cells in Peripheral Blood of NSCLC Patients

The proportion and changes of CD4^＋CD25^high regulatory T cells （Trs） in peripheral blood of non-small cell lung cancer （NSCLC） patients were analyzed and their clinical significance explored. The peripheral blood was collected from 61 patients with NSCLC and 15 healthy controls. By using monoclonal antibodies, the blood samples were evaluated with the flow cytometry for lymphocyte subsets （CD3^＋, CD4^＋ and CD8^＋） and CD4^＋CD25^high Tr cells. The results showed that the proportion of CD4^＋CD25^high Tr cells in NSCLC group was significantly higher than in control group [（4.36 ±2.07） % vs （2.04±1.03） %, P〈0.01]. The proportion of CD4^＋CD25^ high Tr cells in late stage was higher than that in early stage [stages Ⅰ ＋Ⅱ （2.264±0.6） %; stage Ⅲ（3.284± 1.38） %; stage IV （6.06 4±4.08） %] （P〈0.05）. Kaplan-Meier survival analysis revealed that the prognosis of the patients who had higher proportion of CD4^＋CD25^high Tr cells in peripheral blood was worse （P=0.0026）. In conclusion, the relative increase in CD4^＋CD25^high Tr cells in peripheral blood may be related to im- munosuppression and tumor progression in patients with NSCLC. This finding suggests that CD4^＋CD25^high Tr cells in peripheral blood of NSCLC may be positive for prognosis analysis. The use of depletion of the CD4^＋CD25^high Tr cell therapy to treat NSCLC patients may be an effective strategy.

Effects of estrogen on CD4^+ CD25^+ regulatory T cell in peripheral blood during pregnancy

Objective To investigate the effects of estrogen(E_2)level on regulatory T cells(Treg)in peripheral blood during pregnancy.Methods:A total of 30 healthy non-pregnant women were selected as control group,90 pregnant women of early,middle and late pregnancy and 30 postpartum women at 1 month after parturition were selected as experimental groups including early pregnancy group,middle pregnancy group and late pregnancy group;the proportions of CD4^+CD25^+Treg and CD4^+CD25^+CD127^-Treg among CD4 T cells were detected by flow cytometry;the serum estrogen content in peripheral blood was detected by electrochemical immune luminescence method.Results:E_2 level was coincident with the change of Tregs number during pregnancy.The estrogen content in peripheral blood increased gradually from early pregnancy to late pregnancy,then decreased significantly after parturition,and the level at 1 month after parturition down to the level in non-pregnancy group(P>0.05);the level of E_2 in pregnancy groups were significantly higher than those in non-pregnancy group(P<0.01);and there were significant differences among early pregnancy group,middle pregnancy group and late pregnancy group(P<0.05).The proportions of CD4^+CD25^+Treg and CD4^+CD25^+CD127^-Treg in pregnancy groups were significantly higher than those in non-pregnancy group(P<0.05),but decreased significantly after parturition,and there was no significant difference between non-pregnancy group and postpartum women group(P>0.05):the proportions in middle and late pregnancy groups were significantly higher than those in early pregnancy group(P<0.05).but decreased slightly in late pregnancy group,there was no significant difference between late pregnancy group and middle pregnancy group(P>0.05).There was correlation between Tregs number with estrogen level during pregnancy.The proportion of CD4^+CD25^+Treg and CD4^+CD25^+CD 127^-Treg were positively correlated with estrogen level.Conclusions:High proportion of CD4^+CD25^+Trcg and CD4^+CD25^+CD127^-Treg is closely related to the high level of E,during pregnancy.It suggested that high level of estrogen may induce an increase of CD4^+CD25^+Treg in peripheral blood.and then influence the immune function of pregnant women.The results of this experiment might play an important role of estrogen in immune-modulation during pregnancy.

Increase of CD4^+CD25^+ T cells in Smad3^(-/-) mice

AIM： To investigate the changes of lymphocyte subpopulations, especially CD4^＋CD25^ T regulatory cells in Smad3^-/- mice. METHODS： Hematological changes and changes of lymphocyte subpopulations were detected in Smad3＂/- mice using cell counter and flow cytometry, respectively, and compared to their littermate controls. RESULTS： The numbers of neutrophils and lymphocytes in peripheral blood were significantly increased in Smad3^-/- mice compared to littermate controls. CD19^＋ expressing cells in blood and spleen, and CD8^＋ T cells in thymus were all markedly decreased in Smad3^-/- mice. More important, Smad3^-/- mice had an increased population of CD4^＋CD25^＋ T cells in peripheral lymphoid tissues, including thymus, spleen, and lymph nodes. CONCLUSION： These observations suggest that the changes of lymphocyte subpopulations might play a role in susceptibility to inflammation of Smad3^-/- mice.

整形保乳手术在年轻早期乳腺癌患者中的临床疗效及对血CD19^+B细胞、NK细胞和IL-6水平的影响

目的探讨整形保乳手术在年轻早期乳腺癌患者中的临床效果及对外周血CD19^+B细胞、自然杀伤(naturalkiller,NK)细胞和白细胞介素6(interleukin-6,IL-6)水平的影响。方法选取2016年1月至2017年12月于本院治疗的早期乳腺癌患者90例,根据手术方案分为对照组(n=45例)和观察组(n=45例),所有患者均未行术前化疗。对照组采用常规保乳手术治疗,观察组采用整形保乳手术治疗,术后对患者进行5年随访,对手术效果进行评估。记录并统计两组术中出血量、手术及住院时间、切除组织重量、最小手术切缘及最大手术切缘;采用流式细胞仪测定两组手术前后的CD19^+B细胞、NK细胞水平;采用酶联免疫吸附试验测定两组手术后IL-6水平;记录并统计两组术后血清肿、血肿、切口开裂、脂肪坏死及皮肤退缩的发生率,比较两组的临床疗效及对血CD19^+B细胞、NK细胞及IL-6水平的影响。结果观察组的手术时间、切除组织重量、最小手术切缘及最大手术切缘均大于对照组(P<0.05),而术中出血量、住院时间均小于对照组(P<0.05);两组术后血CD19^+B细胞、NK细胞及IL-6水平均低于手术前(P<0.05),观察组手术后血CD19^+B细胞、NK细胞及IL-6水平均低于对照组(P<0.05);观察组术后血清肿、血肿、切口开裂、脂肪坏死及皮肤退缩的发生率与对照组比较差异无显著性(P>0.05)。结论整形保乳手术用于年轻早期乳腺癌患者不仅能保证保乳手术切缘安全性,还能降低血CD19^+B细胞、NK细胞及IL-6水平,值得推广应用。

Influence of Danshen Injection on airway inflammation and CD4^+ CD25^+ regulatory T cells of asthmatic rats

Objective： To investigate the influence of Danshen Injection on airway inflammation and CD4^＋CD25^＋ regulatory T cells（CD4^＋CD25^＋ Tr） of asthmatic rats, and elucidate the possible mechanism of Danshen Injection in treatment of asthma. Methods： 30 Wister rats were randomly divided into control group, asthma group and Danshen Injection treated group. Bronchoalveolar lavage fluids （BALF） were collected, and cytology studies were conducted. Lung tissues were obtained and pathologic analyses were done with hematoxylin and eosin stain （HE）. Flow cytometry was used to detect the CD4^＋CD25^＋ Tr ratio in peripheral blood mononuclear cells （PBMCs）. Results： Total cell, the percentage of lymphocytes, neutrophils and eosinophils （Eos） in BALF of Danshen Injection-treated group were lower than that in asthma group （P〈0.05, P〈0.01）. Compared with asthma group, less infiltration of inflammatory cells in lung tissues was observed in Danshen Injection-treated group. CD4^＋CD25^＋ Tr of asthma group was lower than that of control and Danshen Injection treated group （P〈0.05）. Conclusion： Danshen Injection can suppress airway inflammation of asthmatic rats, probably by increasing the number of CD4^＋CD25^＋ Tr.

鼻咽癌患者治疗前后外周血CD4^+ CD25^+调节性T细胞和CD19^+ CD35^+细胞的变化

目的探讨鼻咽癌患者治疗前后外周血CD4+CD25+调节性T细胞(CD4+CD25+Tr)比例和CD19+CD35+细胞比例的变化及其与鼻咽癌复发或转移的关系。方法临床分期为Ⅱ期的54例鼻咽癌患者,随访3年后,有复发或转移8例,无复发转移46例。采用流式细胞术检测治疗前后患者外周血CD4+CD25+Tr比例和CD19+CD35+细胞比例。结果与治疗前比较,54例鼻咽癌患者治疗后CD4+CD25+Tr比例下降(P<0.01),CD19+CD35+细胞的比例升高(P<0.01)。8例有复发或转移的鼻咽癌患者,上述两指标在治疗后,与治疗前比较差异均无统计学意义(P>0.05);而46例无复发或转移的鼻咽癌患者,治疗后CD4+CD25+Tr比例下降,CD19+CD35+细胞的比例升高(P<0.01)。结论检测鼻咽癌患者治疗前后外周血CD4+CD25+Tr比例和CD19+CD35+细胞比例,可能有助于及早发现鼻咽癌复发或转移。

中药狼疮静颗粒对狼疮性BXSB小鼠脾脏CD_4^+T、CD_(19)^+B细胞凋亡的影响

目的 :研究中药狼疮静颗粒对BXSB狼疮性小鼠脾脏CD4 + T、CD19+ B细胞凋亡的影响 ,并探讨其作用机理。方法 :运用流式细胞术、免疫双荧光染色法检测脾脏CD4 + T、CD19+ B细胞凋亡。结果 :雄性BXSB小鼠脾脏CD4 + T、CD19+ B细胞凋亡加速 ,中药狼疮静颗粒可明显抑制BXSB小鼠脾脏CD4 + T、CD19+B细胞凋亡率。结论 :中药狼疮静颗粒通过抑制T、B淋巴细胞过度凋亡 ,可能阻抑了过量核酸抗原释放 ,从而抑制了B细胞的异常增生活化 ,使自身抗体产生减少而达到治疗系统性红斑狼疮目的。

B系急性淋巴细胞性白血病患儿外周血中CD4^+、CD8^+、CD19^+细胞的观察

目的 :分析诱导疗程前、疗程中及缓解期三个时期内B系急性淋巴细胞性白血病患儿外周血中CD4+ 、CD8+ 、CD19+ 细胞阳性率的变化情况及比例关系。方法 :应用流式细胞仪 (FCM)分析。结果 :在B系急淋未经治疗的情况下 ,CD19+ 细胞的阳性率显著升高 ,CD4+ 、CD8+ 细胞的阳性率比例显著降低 ,且CD4+ /CD8+ 比例倒置。在诱导疗程后期 ,CD19+ 细胞阳性率下降 ,CD4+ 、CD8+细胞阳性率比例相对升高 ,但CD4+ /CD8+ 比例仍然倒置。在缓解期 ,CD19+ 细胞阳性率下降 ,CD4+ 、CD8+ 细胞阳性率比例升高 ,CD4+ /CD8+ 比例升高至正常水平。结论 :在B系急淋患儿未经治疗时 ,肿瘤负荷较重 ,CD4+ 、CD8+ 细胞DNA增殖受到抑制 ,细胞免疫水平低下。在诱导疗程后期 ,肿瘤负荷下降 ,细胞免疫水平仍然低下。在缓解期 ,细胞免疫水平恢复。

Isolation and identification of CD4^+CD25^+ regulatory T cells in rat

Objective： To establish a stable and high efficient method for collection of CD4^＋CD25^＋ regulatory T cells from rats in vitro. Methods： CD4^＋CD25^＋ regulatory T cells were isolated from the rat splenic cells through two steps by magic cell sorting （MACS） system. The first step was negative selection of CD4^＋T cells by cocktail antibodies and anti-IgG magic microbeads, and the second step was positive selection of CD25^＋T cells by anti-CD25 PE and anti-PE magic microbeads. The purity and viability of separated cells were measured by flow cytometry （FACS） and Trypan blue staining. The suppressive ability of seperated cells on the proliferation of CD4^＋CD25^- T cells was assessed by cell proliferation assay. Results： The purity of negatively enriched CD4^＋ T cells was 79%-87% （83.6%±2.5% ） , and the purity of positively enriched CD4^＋CD25^＋ T cells was 86%- 93% （ 90.2±1.8% ） with the viability of 92%～95% （92.8% ± 3.4% ）. The enriched cells significantly suppressed the proliferation of CD4^＋CD25^- T cells in mixed lymphocyte culture （P 〈 0.05）. Conclusion： An effective method can be established for enrichment of CD4^＋CD25^＋ regulatory T cells in two steps by MACS, with satisfied cell purity, viability and function.