Polarization and Apoptosis of T Cell Subsets in Idiopathic Thrombocytopenic Purpura

It is well-known that idiopathic thrombocytopenic purpura （ITP） is an acquired organ-specific autoimmune hemorrhagic disease and dysfunctional cellular immunity is considered important in the pathophysiology of ITP. However, polarization patterns and apoptosis profiles of T lymphocytes remain unclear. In this study, we investigated the polarization of T cell subsets, the expressions of apoptotic proteins Fas/FasL on the subsets and the level of anti-apoptotic gene bcl-2 and bax mRNA. It was demonstrated that the ratios of Thl/Th2 and Tcl/Tc2 in ITP children were increased obviously and that the average percentages were increased clearly for Thl and Th2, but not for Tcl and Tc2. In ITP children, the enhancing expressions were detected for FasL on Thl and Tcl and for Fas on Th2 and Tc2. With increasing level of bcl-2 mRNA and decreasing expression of bax mRNA in ITP children, the ratio of bcl-2/bax mRNA was improved obviously, which was positive correlated with the ratio of Thl/Th2. Taken together, our findings indicate that ITP is a Thl predominant disease. This polarization pattern of T cell subsets might be related to the high ratio of bcl-2/bax mRNA and the abnormal expressions of Fas and FasL on T cell subsets.

The Effect of BCG-PSN on T-cell Subsets and Cytokines in Vernal Conjunctivitis

The effects of BCG PSN on T cell subsets and cytokines in vernal conjunctivitis were observed. The level of total IgE was quantitatively determined before and after treatment with BCG PSN by allergen diagnostic instrument in vitro . The content of T cell subsets of peripheral blood and cytokine were determined by using indirect immune fluorescence method, and IL 4 and INF γ were quantified by ELISA. The results showed that the level of total IgE was substantially reduced ( P <0.01) after treatment in the BCG PSN group. Meanwhile, CD + 8 was decreased, CD + 4 and CD + 4/CD + 8 ratio elevated with significant differences ( P <0.05) as compared with pre treatment results. The changes in total IgE, CD + 8 ,CD + 4 and CD + 4/CD + 8 ratio after treatment also presented significant differences ( P <0.05) between BCG PSN group and routine treatment group. The level of IL 4 in serum declined ( P <0.05) after treatment in the BCG PSN group, and INF γ went up ( P <0 05). IL 4 and INF γ in serum showed significant differences ( P <0.05) between two groups after treatment. It is concluded that BCG PSN has a bi directional immunoregulating effect. It can bring CD + 4 and CD + 8 into homeostasis, thereby preventing the occurrence of anaphylaxis. At the same time, BCG PSN can restrain Th 2, decrease the synthesis of IL 4, switch the balance of Th l/Th 2 to Th 1 side, boost up the predominance of Th 1 relatively, which is propitious to perennial stabilization and recovery of vernal conjunctivitis.

Distribution of natural killer cells and T-lymphocyte subsets in peripheral blood,gallbladder cancer and surrounding tissue

BACKGROUND: The patient with malignant tumor always show immunologic function drawback and ingravescent with tumor development, especially in the aspect of cell-mediated immunity. This study was undertaken to define the relationship between the immune function of local cells and cancer development by investigating the distribution of natural killer (NK) cells and T-lymphocyte subsets in peripheral blood, the cancer tissue and the tissue surrounding gallbladder carcinoma. METHODS: The numbers of CD4(+) and CD8(+) T-lymphocytes and NK cells were measured by flow cytometry in samples taken from gallbladder cancer tissue, the surrounding tissues and peripheral blood of 38 patients, and compared with the numbers in the peripheral blood and gallbladder tissue of 30 patients with cholecystitis as controls. RESULTS: The numbers of CD4(+) and CD8(+) T-cells and NK cells in gallbladder cancer tissues were significantly higher than those in the surrounding tissue and gallbladder with gallstone. However, the ratio of CD4(+)/CD8(+) was lower in the cancer tissue than that in the surrounding tissue and tissue from gallbladders with gallstones. The distribution of CD4(+) and CD8(+) T-cells and NK cells in mucous membrane of cholecystitis gallbladder and that in the tissue surrounding gallbladder cancer were significantly different. CONCLUSIONS: Disproportionate and imbalanced distribution of NK cells and subsets of T-lymphocytes occurs in the mucous membrane proper of gallbladder cancer and surrounding tissue. Although gallbladder cancer tissue has higher expressions of CD4(+), CD8(+) and NK cells, the immune function is low or in an inhibited state. In gallbladder cancer immunization therapy, local cellular immunological function should be enhanced and the protective barrier improved.

Effects of Intraoperative Administration of Dexmedetomidine on the Percentage of T-Lymphocyte Subsets and Natural Killer Cells in Patients with Colorectal Cancer

Study Objective: To observe the effect of dexmedetomidine (DEX) on T-lymphocyte subsets and natural killer (NK) cells in the peripheral blood of perioperative patients with colorectal cancer. Design: A random double-blind control clinical study. Setting: A university hospital. Patients: Forty patients with colorectal cancer, ASA I-П. Interventions: All patients were randomly divided into a DEX group (n = 20) and a control group (n = 20). Before induction of anesthesia, epidural catheters were placed in the L1-L2 or T12-L1 intervertebral spaces. The DEX group received 1 μg/kg of DEX (200 μg/50 ml) intravenously for 15 min prior to the surgery, which was then infused at a rate of 0.5 μg/kg/h until 30 min before the end of the surgery. The control group received an intravenous infusion of saline (50 ml) instead of DEX during the same periods as the DEX group. All patients received routine anesthesia and postoperative analgesia. Measurements: Blood samples from all patients were collected at the following time points: before anesthesia (T0), 24 h after surgery (T1), 48 h after surgery (T2) and 72 h after surgery (T3). Changes in T-lymphocyte subsets (CD3+, CD4+, CD8+, CD4+/CD8+) and NK cells were determined by flow cytometry. Main Results: Compared with the control group, the percentages of CD3+ and CD4+ cells and the CD4+/CD8+ ratio in the DEX group increased significantly from T1 to T3

Study on T lymphocyte subsets and NK cells in patients with Graves' disease combined with type 2 diabetes

Objective To investigate changes in T lymphocyte subsets and NK cells in patients with simple Graves’ disease(GD)and Graves’ disease combined with type 2 diabetes mellitus(GD/T2DM).Methods Fifteen cases of GD/T2DM were selected from our hospital from November 2001 to November 2004.Before and after therapy thyroid function,thyroglobulin antibody(TGA),thyroid microsomal antibody(TMA)and blood glucose level were measured,and T lymphocyte subsets(CD3,CD4,CD8,CD4/CD8)and NK cells(CD56)were measured by immunofluorescence double labeling monoclonal antibody and flow cytometry,respectively.At the same time,comparison was made with simple GD(15 cases),T2DM(15 cases)and healthy control(20 cases).Results Before therapy,CD4/CD8,CD4 and NK cells in GD/T2DM were less than normal,and there was no significant difference in comparison with simple GD(P<0.05).In T2DM group,only CD4/CD8 and CD4 were less than those of healthy controls(P<0.05).When thyroid function recovered after 1 to 3 months of methimazole treatment in both GD/T2DM and simple GD groups,various indexes recovered,which were more obvious in simple GD.Conclusion Immune hypofunction of GD may be the key to the immune abnormality of GD/T2DM,which is more significant than that of simple GD or T2DM.The recovery of thyroid function and immune abnormality is not consistent,and the recovery of GD is more significant than that of GD/T2DM.

Detection of lymphocyte subsets and regulatory T cells in peripheral blood of patients with acute leukemia and its clinical significance

Objective To study the changes of lymphocyte subsets and regulatory T cells in peripheral blood of patients with acute leukemia(AL) and its clinical significance.Methods The different levels of peripheral blood lymphocyte subsets and regulatory T cells of 60 AL patients and 40 normal controls were detected with flow cytometry.Results Compared with the normal controls,the percentages of CD3+ T cells,CD4+ T cells,CD16+CD56+ NK cells and the ratio of CD4+ /CD8+ obviously decreased in newly diagnosed AL group(P <0.05),while their percentages of CD8+ T cells and CD19+ B cells significantly increased(P <0.01).The percentage of CD4+ T cells and the ratio of CD4+ /CD8+ in acute lymphoblastic leukemia(ALL) group were much lower than those in acute myelogenous leukemia(AML) group(P <0.01).Compared with these in control group,the proportions of CD4+ CD25high Treg cells and CD4+ CD25+ T cells in newly diagnosed AL group were significantly increased(P <0.01).Conclusion Cellular immune function is significantly abnormal in patients with AL.Compared with AML patients,ALL patients had poorer cellular immune function.The increased CD4 + CD25high Treg cells might be one of the important reasons of immunosuppression in AL.Detection of lymphocyte subsets and regulatory T cells is of clinical value on the evaluation of therapeutic effect and prognosis in AL patients.

Expression of Snail in bladder urothelial carcinoma and its relationship with E-cadherin and a subset of T cell groups

Objective To investigate the expression of Snail in bladder urothelial carcinoma and evaluate its relationship with E-cadherin and a subset of T cell groups. Methods Immunohistochemical method was used to detect the expression of Snail and E-cadherin proteins in tissue

Advanced Glycation End Products Promote Differentiation of CD4^+ T Helper Cells toward Pro-inflammatory Response

This study investigated the effect of advanced glycation end products（AGEs） on differentiation of na ve CD4＋T cells and the role of the receptor of AGEs（RAGE） and peroxisome proliferator-activated receptors（PPARs） activity in the process in order to gain insight into the mechanism of immunological disorders in diabetes. AGEs were prepared by the reaction of bovine serum albumin（BSA） with glucose. Human na ve CD4＋T cells, enriched from blood of healthy adult volunteers with negative selection assay, were cultured in vitro and treated with various agents including AGEs, BSA, high glucose, PGJ2 and PD68235 for indicated time. In short hairpin（sh） RNA knock-down experiment, na ve CD4＋T cells were transduced with media containing shRNA-lentivirus generated from lentiviral packaging cell line, Lent-XTM293 T cells. Surface and intracellular cytokine stainings were used for examination of CD4＋T cell phenotypes, and real-time PCR and Western blotting for detection of transcription factor mRNA and protein expression, respectively. The suppressive function of regulatory T（Treg） cells was determined by a [3H]-thymidine incorporation assay. The results showed that AGEs induced higher pro-inflammatory Th1/Th17 cells differentiated from na ve CD4＋T cells than the controls, whereas did not affect anti-inflammatory Treg cells. However, AGEs eliminated suppressive function of Treg cells. In addition, AGEs increased RAGE mRNA expression in na ve CD4＋T cells, and RAGE knock-down by shRNA eliminated the effect of AGEs on the differentiation of CD4＋T cells and the reduction of suppressive function of Treg cells. Furthermore, AGEs inhibited the mRNA expression of PPARγ, not PPARα; PPARγ agonist, PGJ2, inhibited the effect of AGEs on na ve CD4＋T cell differentiation and reversed the AGE-reduced suppressive function of Treg cells; on the other hand, PPARγ antagonist, PD68235, attenuated the blocking effect of RAGE shRNA on the role of AGEs. It was concluded that AGEs may promote CD4＋T cells development toward pro-inflammatory state, which is associated with increased RAGE mRNA expression and reduced PPARγ activity. ＋

肠道菌群情况与发声和多种运动联合抽动障碍患儿神经递质、神经功能及T细胞亚群的相关性分析

目的探讨发声和多种运动联合抽动障碍(又称抽动症)患儿肠道菌群分布情况与其神经递质、神经功能及T细胞亚群的相关性。方法以2020年5月—2023年5月南京中医药大学附属南京市中西医结合医院收治的97例抽动症患儿作为研究对象,通过耶鲁抽动症整体严重度量表(YGTSS)将所有患儿分为轻度组23例、中度组42例和重度组32例。采集所有患儿粪便样本,采用16S rRNA测序技术和Qiime软件进行肠道菌群α多样性分析[Chao1指数、observed species(Sobs)指数、Shannon指数、Simpson指数];测定T淋巴细胞亚群(CD4^(+)、CD8^(+)、CD4^(+)/CD8^(+))和神经递质[5-羟色胺(5-HT)、多巴胺(DA)、γ-氨基丁酸(GABA)、去甲肾上腺素(NE)]水平;评估两组儿童神经功能;采用Pearson相关性分析探讨患儿肠道菌群与神经递质、神经功能及T细胞亚群的关系。结果与轻度组相比,中度组和重度组的YGTSS评分的运动性抽动、发声性抽动、总分更高(P<0.05);轻度组、中度组和重度组患儿的Chao1、Sobs、Shannon和Simpson指数比较,经方差分析,差异均有统计学意义(P<0.05);与轻度组相比,中度组和重度组的α多样性更低(P<0.05);轻度组、中度组和重度组患儿的CD4^(+)、CD8^(+)和CD4^(+)/CD8^(+)比较,经方差分析,差异均有统计学意义(P<0.05);与轻度组相比,中度组和重度组的CD4^(+)和CD4^(+)/CD8^(+)更低,CD8^(+)更高(P<0.05);与轻度组相比,中度组和重度组的5-HT和DA更高,GABA、NE、神经功能评分更低(P<0.05)。根据Pearson相关性分析结果,患儿Chao1、Sobs、Shannon和Simpson指数与5-HT、DA呈负相关(P<0.05),与CD4^(+)、GABA、NE和神经功能评分呈正相关(P<0.05)。结论肠道菌群与抽动症患儿的神经递质、神经功能和T细胞亚群密切相关。

Immunohistochem ical Study of T Lym phocyte Subsets onFrozen Substituted Plastic Em bedding Section of the BoneMarrow from Patients with Myelodysplastic Syndrom e andIts ClinicalIm plication

An immunohistochemical study of T lymphocyte subsets on frozen substituted plastic embedding bone marrow sections obtained from 10 patients with myelodysplastic syndrome (MDS) was presented. The results of qualitative and quantitative immunohistochemical analysis are as follows: (1) Labile antigens of T lymphocytes were well preserved, thus allowing analysis of distribution of T lymphocyte subsets in situ ; (2) the average number of T 3, T 4 and T 8 lymphocyte of the diffuse infiltrate was about 2 %, 0.4 %, 0.5 %, respectively, of all nucleated cells in bone marrow, and T 4/T 8 of T cells were below 1.0 in patients with MDS; (3) there were cases of RAS showing T lymphocyte aggregation in bone marrow, but no patient exhibited progressive refractory anemia with excess of blasts(RAEB) and RAEB in transformation (RAEBT). These findings indicated that the immunological abnormalities are of importance in the evaluation of pathogenesis and prognosis of MDS.

急性痛风性关节炎患者外周血脂联素与CD4^(+)T细胞亚群的分析及相关性研究

目的比较急性痛风性关节炎患者与健康对照组外周血脂联素及CD4+T细胞亚群的差异,并探究痛风患者脂联素与血尿酸、疾病活动度、CT4^(+)T细胞亚群及部分细胞因子的相关性。方法收集急性痛风组(n=90)及健康对照组(n=72)的临床资料(包括一般资料、中性粒细胞、红细胞沉降率、C反应蛋白、血尿酸、CT4^(+)T细胞亚群及部分细胞因子);检测两组外周血脂联素水平,比较两组间外周血脂联素及CD4+T细胞亚群的差异;分析脂联素与各临床资料的相关性。结果与健康对照组比较,急性痛风组外周血脂联素水平明显降低(P<0.001),且Th2、Th17、Th17/Treg均升高(P<0.05),Treg、Th1/Th2均降低(P<0.05)。急性痛风组外周血脂联素与中性粒细胞、红细胞沉降率及C反应蛋白均呈负相关(r=-0.244,P<0.05;r=-0.311,P<0.05;r=-0.506,P<0.001),而与血尿酸无相关性。急性痛风组外周血脂联素与Th1和Th1/Th2均呈正相关(r=0.252,P<0.05;r=0.218,P<0.05)。急性痛风组外周血脂联素与白细胞介素-2(interleukin-2,IL-2)、白细胞介素-4(interleukin-4,IL-4)和白细胞介素-10(interleukin-10,IL-10)均呈正相关(r=0.323,P<0.05;r=0.377,P<0.05;r=0.359,P<0.05);而与白细胞介素-6(interleukin-6,IL-6)和肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)呈负相关(r=-0.265,P<0.05;r=-0.299,P<0.05)。多元线性回归分析显示,急性痛风组外周血脂联素与红细胞沉降率、C反应蛋白、IL-6及TNF-α均呈负相关(B _(ESR)=-12.541,P=0.003;B_( CRP)=-8.256,P=0.024;B_( IL-6)=-15.907,P=0.037;B _(TNF-α)=-79.770,P=0.040),而与Th1呈正相关(B _(Th1)=2.959,P=0.006)。结论急性痛风性关节炎患者外周血脂联素水平降低,Th2和Th17升高,而Treg降低,脂联素降低与急性痛风性关节炎患者免疫紊乱及免疫炎症相关。

帕金森病患者免疫球蛋白、Th9亚群水平变化及其与IGF-1、S-100B蛋白的相关性

目的:研究帕金森病(PD)患者免疫球蛋白(IgG、IgA和IgM)、辅助性T细胞亚群Th9水平变化及其与胰岛素生长因子-1(IGF-1)、S-100B蛋白的相关性。方法:选取2020年12月至2022年12月期间在河北省中医院确诊的108例PD患者,将其作为研究组,并根据患者病变程度分为轻度组(35例)、中度组(44例)和重度组(29例);另选108例健康成人作为对照组。对比研究组和对照组免疫球蛋白和Th9亚群水平,以及轻度组、中度组及重度组免疫球蛋白、Th9亚群、IGF-1和S-100B蛋白水平,采用Pearson相关性分析免疫球蛋白、Th9亚群和IGF-1、S-100B蛋白的相关性。采用Spearman相关性分析PD患者疾病程度和所有差异指标间的相关性。结果:研究组IgM水平较对照组低,且重度组低于中度组,中度组低于轻度组(P<0.05);研究组IgG、IgA、IL-9和Th9亚群水平较对照组高,且重度组高于中度组,中度组高于轻度组(P<0.05)。重度组IGF-1水平低于中度组,中度组低于轻度组;重度组S-100B蛋白水平高于中度组,中度组高于轻度组(P<0.05)。Pearson相关性分析结果显示,PD患者IgM水平与IGF-1水平呈正相关,与S-100B蛋白水平呈负相关;IgG、IgA、IL-9和Th9亚群水平均与IGF-1水平呈负相关,与S-100B蛋白水平呈正相关(P<0.05)。Spearman相关性分析结果显示,PD患者疾病程度与IgM、IGF-1水平呈负相关,与S-100B蛋白、IgG、IgA、IL-9和Th9亚群水平呈正相关(P<0.05)。结论:PD患者IgM水平降低,IgG、IgA、Th9亚群水平升高,且其水平变化与IGF-1、S-100B明显相关,可以用于评估病情的严重程度。

养正透邪祛毒法联合NAC方案化疗对三阴性乳腺癌患者疗效、T细胞亚群及癌因性疲乏的影响

目的:探讨养正透邪祛毒法联合NAC方案(多西他赛+表柔比星+环磷酰胺)化疗对三阴性乳腺癌患者疗效、T细胞亚群及癌因性疲乏的影响。方法:选取2022年6月至2023年6月该院诊治的三阴性乳腺癌患者100例,根据随机数字表法分为对照组和观察组,各50例。对照组患者给予NAC方案治疗,观察组患者给予口服自拟养正透邪祛毒方与NAC方案联合治疗。观察两组患者的疗效、T淋巴亚群、炎症因子、癌因性疲乏水平及不良反应发生情况。结果:观察组患者的总有效率为82.00%(41/50),明显高于对照组的58.00%(29/50),差异有统计学意义(P<0.05)。治疗后,两组患者CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)、白细胞介素(IL)12和IL-2水平均较治疗前升高,且观察组患者较对照组更高;两组患者CD8^(+)、肿瘤坏死因子α和可溶性白细胞介素-2受体水平,躯体、认知和情感疲乏评分均较治疗前降低,且观察组患者较对照组更低,上述差异均有统计学意义(P<0.05)。观察组、对照组患者的不良反应发生率分别为24.00%(12/50)、28.00%(14/50),差异无统计学意义(P>0.05)。结论:养正透邪祛毒法与NAC方案化疗联合治疗三阴性乳腺癌患者,可明显提高疗效,改善T细胞亚群水平,降低炎症反应,改善癌因性疲乏状况,安全性佳。

T细胞亚群与应用免疫检查点抑制剂的肿瘤患者产生不良反应的相关性分析

目的观察临床不同癌种患者在接受肿瘤细胞免疫检查点抑制剂治疗前后外周血中T淋巴细胞亚群的变化,探索其与不良反应发生相关性。方法回顾性收集2021年8月~2022年12月于辽宁中医药大学附属医院住院接受ICIs治疗的60例肿瘤患者的临床资料,对比接受ICI治疗前后的CD3^(+)、CD4^(+)、CD8^(+)计数及CD4^(+)/CD8^(+)的变化,分析T细胞亚群变化的影响因素。结果接受ICI治疗后CD3^(+)、CD4^(+)计数较前升高、CD4^(+)/CD8^(+)较前升高,差异具有统计学意义(P<0.05);虽CD8^(+)较前降低,但差异无统计学意义(P>0.05)。结果显示使用中药时间越长,CD4^(+)/CD8^(+)更趋近于正常范围0.7~2.78,同时不良反应出现的几率越低,irAEs分级越低。结论细胞病理免疫分析的T淋巴细胞结果或可作为临床指导预防免疫相关不良反应的指标之一,治疗过程中联合应用中药可显著降低临床不良反应。

右美托咪定联合硬膜外麻醉对盆底重建术患者T细胞淋巴亚群、应激因子的影响

目的探讨右美托咪定联合硬膜外麻醉对盆底重建术患者T细胞淋巴亚群、应激因子的影响。方法回顾性分析2018年9月至2023年9月在南阳市中心医院接受盆底重建术患者的临床资料,将其中符合纳入标准的120例患者纳入研究,按不同麻醉方案分为对照组(60例)、观察组(60例)。对照组接受硬膜外麻醉,观察组接受右美托咪定联合硬膜外麻醉。以麻醉前(T_(0))、右美托咪定给药后(T_(1))、手术开始时(T_(2))、手术开始30 min(T_(3))、术毕时(T_(4))为时间节点,比较两组生命体征指标水平。以术后2、6、12、24、48 h为时间节点,比较两组疼痛视觉模拟评分法(VAS)评分、Ramsay镇静评分。以麻醉前、术后1 d为时间节点,比较两组T细胞淋巴亚群(CD3^(+)、CD8^(+)、CD4^(+)/CD8^(+))、应激因子指标[血清皮质醇(Cor)、肾上腺素(NE)]水平。比较两组围手术期不良反应发生情况。结果观察组T_(1)、T_(2)、T_(3)、T_(4)时心率、平均动脉压水平均低于对照组(P<0.05)。观察组2、6、12 h的VAS评分低于对照组(P<0.05)。观察组不同时间段Ramsay镇静评分均高于对照组(P<0.05)。观察组术后1 d的CD3^(+)、CD4^(+)/CD8^(+)水平均高于对照组,CD8^(+)水平均低于对照组(P<0.05)。观察组术后1 d的Cor、NE水平均低于对照组(P<0.05);观察组不良反应总发生率与对照组差异无统计学意义(P>0.05)。结论右美托咪定联合硬膜外麻醉镇痛、镇静效果确切,能有效减轻HR、MAP水平波动,改善机体免疫状态、应激状态,且安全性有保障。

桃核承气汤联合中医灌肠对老年糖尿病肾病患者外周血T细胞亚群及血液流变学的影响

目的:探讨桃核承气汤联合中医灌肠对老年糖尿病肾病(DN)患者外周血T细胞亚群及血液流变学的影响。方法:选取2019年1月至2023年3月本院收治的243例DN患者,简单随机化分为三组,各81例。三组均予以西医综合治疗,在此基础上,灌肠组加用中医灌肠,汤剂组加用桃核承气汤,联合组加用桃核承气汤联合中医灌肠,均治疗2个月。比较三组总有效率、中医症候积分、T细胞亚群(CD3^(+)、CD4^(+)/CD8^(+))水平、肾功能指标[血肌酐(SCr)、血尿素氮(BUN)、内生肌酐清除率、24h尿蛋白定量]、血清转化生长因子-β1(TGF-β1)、纤溶酶原激活物抑制因子-1(PAI-1)水平、血液流变学指标[血浆黏度、红细胞比容(HCT)、红细胞聚集指数(EAI)]及不良反应。结果:联合组治疗后总有效率(92.59%)较汤剂组(69.14%)、灌肠组(72.84%)高,中医症候积分较汤剂组、灌肠组低(P<0.05);联合组治疗后CD3^(+)、CD4^(+)/CD8^(+)、内生肌酐清除率较汤剂组、灌肠组高,SCr、BUN、24h尿蛋白定量、TGF-β1、PAI-1、血浆黏度、HCT、EAI水平较汤剂组、灌肠组低(P<0.05);三组不良反应发生率比较,无显著差异(P>0.05)。结论:桃核承气汤联合中医灌肠治疗老年DN,可改善患者症状体征,保护肾功能,纠正免疫失衡状态,疗效显著,安全可靠,其机制可能与下调TGF-β1、PAI-1及改善血液流变学有关。

T淋巴细胞亚群、Th1/Th2细胞和血清SAA变化对急诊儿童急性重症肺炎心肌损伤的预测

目的分析T淋巴细胞亚群、辅助性T细胞1/辅助性T细胞2(Th1/Th2)和血清淀粉样蛋白A(SAA)对急诊儿童急性重症肺炎心肌损伤的预测价值。方法选取儿童急性重症肺炎心肌损伤60例为观察组,轻症肺炎50例为对照组,同期体检健康儿童58例为健康组。检测心肌损伤指标、免疫球蛋白(Ig)、淋巴细胞亚群(CD^(+))、动脉血气及乳酸清除率。分析急性重症肺炎心肌损伤的影响因素,以及各指标对急性重症肺炎患儿心肌损伤的预测价值。结果观察组和对照组CD3^(+)、CD4^(+)、Th1/Th2、IgA、IgM、IgG、氧分压(PaO 2)低于健康组,肌钙蛋白I、肌酸激酶同工酶(CK-MB)、SAA、CD8^(+)、CD19^(+)、CD23^(+)、CD40^(+)、乳酸清除率高于健康组,且观察组变化更为显著(P<0.05)。SAA、CD8^(+)、CD3^(+)、CD4^(+)、Th1/Th2是急性重症肺炎心肌损伤的影响因素(P<0.05)。T淋巴细胞亚群、Th1/Th2细胞和SAA联合预测急性重症肺炎心肌损伤的曲线下面积高于各指标单独应用(P<0.05)。结论T淋巴细胞亚群、Th1/Th2细胞和血清SAA对急诊儿童急性重症肺炎心肌损伤具有较高的预测价值。

T细胞亚群平衡在心力衰竭中的作用与中医药干预研究进展

心力衰竭是各种心脏疾病的严重和终末阶段,随着对心力衰竭的病理生理机制研究不断深入,越来越多的证据表明T淋巴细胞亚群激活参与了心衰的发生发展,各种刺激导致效应T细胞的活化,渗透心血管壁,促进血管衰老、弹性层膜降解以及心肌纤维化,导致心血管结构和功能改变。中医药通过调节T细胞亚群平衡,减轻炎症反应,维持免疫内环境稳定,进而缓解临床症状和体征,提高心功能和运动耐量,改善生活质量,在临床上应用越来越广泛。重点对T细胞亚群平衡在心衰中的作用及中药有效成分、单味中药、中药复方、中成药以及针灸的治疗进行概述,为中医药在心力衰竭免疫领域的研究提供依据。

巨型艾美耳球虫Th1类细胞因子刺激性分子EmARM-β对鸡PBMC和T细胞亚群免疫功能的影响

[目的]本文旨在探讨巨型艾美耳球虫Th1类细胞因子刺激性分子Armadillo/β-catenin样重复序列蛋白(EmARM-β)对鸡免疫细胞功能的影响。[方法]利用密度梯度离心法和免疫磁珠分选法分别分离出鸡外周血单个核细胞(peripheral blood mononuclear cell,PBMC)、CD8^(+)T细胞和CD4^(+)CD25^(-)T细胞,之后将EmARM-β重组蛋白(rEmARM-β)分别与上述细胞进行体外共孵育6 h,利用CCK-8试剂和qPCR法分别检测并分析其对上述细胞增殖能力及相关细胞因子分泌水平的影响。[结果]经免疫磁珠分选后,流式细胞术检测鸡CD8^(+)T细胞和CD4^(+)CD25^(-)T细胞的纯度分别为93.01%和88.88%。与对照组相比,rEmARM-β显著促进鸡PBMC的增殖能力,显著上调Th1类细胞因子(ifn-γ和il-2)和促炎性细胞因子(il-1β、il-6和il-17a)mRNA水平;显著促进CD8^(+)T细胞的增殖能力,显著上调其ifn-γ、il-2和tnf-α mRNA水平,显著上调穿孔素、fasl(Fas配体)和fas mRNA水平;能显著促进CD4^(+)CD25^(-)T细胞的增殖能力,显著上调其ifn-γ和il-2 mRNA水平,下调il-4和il-10 mRNA水平。[结论]EmARM-β可以有效促进鸡PBMC和T细胞亚群(CD8^(+)T细胞和CD4^(+)CD25^(-)T细胞)的增殖能力,提升其Th1类细胞因子和促炎性细胞因子的分泌水平,提示EmARM-β具有研发鸡球虫病新型疫苗候选抗原的潜力。

T细胞亚群及血清IL-6、IL-17水平对类风湿关节炎预后的评价

目的分析T细胞亚群及血清白细胞介素(IL)-6、IL-17水平对类风湿关节炎(RA)预后的影响。方法选取2021年9月~2023年9月收治的102例RA患者为研究对象,均接受甲氨蝶呤片治疗3个月,于治疗前、治疗后采集患者空腹血液标本,使用流式细胞仪测定T细胞亚群(CD4^(+)、CD8^(+))水平,使用酶联免疫吸附法(ELISA)测定血清IL-6、IL-17水平。统计所有患者临床预后情况,比较不同预后患者T细胞亚群及血清IL-6、IL-17水平。结果RA患者重度活动组的CD4^(+)/CD8^(+)、血清IL-6、IL-17水平均高于中度及轻度活动组(P<0.05)。RA患者治疗后CD4^(+)、血清IL-6、IL-17水平较治疗前降低,CD8^(+)较治疗前升高(P<0.05)。102例RA患者中,72例预后良好,占比70.59%,30例为预后不良,占比29.41%。预后不良的RA患者治疗后CD4^(+)、血清IL-6、IL-17水平较预后良好者高,CD8^(+)较预后良好者低(P<0.05)。结论CD4^(+)、CD8^(+)、CD4^(+)/CD8^(+)、血清IL-6、IL-17水平与RA患者预后情况显著相关。