Effects of TSH inhibition after total thyroidectomy on Tg, VEGF, TSGF, CD44V6, sIL-2R and T lymphocyte subsets in patients with differentiated thyroid carcinoma

Objective:To study the effects of TSH inhibition after total thyroidectomy on Tg, VEGF, TSGF, CD44V6, sIL-2R and T lymphocyte subsets in patients with differentiated thyroid carcinoma (DTC).Methods: A total of 100 patients with DTC in our hospital from January 2014 to January 2017 were enrolled in this study. The subjects were divided into the control group (n=50) and the treatment group (n=50) randomly. The control group was treated with thyroid hormone replacement therapy, the treatment group was treated with levothyroxine sodium oral therapy, the two groups were treated for 1 week. The serum Tg, VEGF, TSGF, CD44V6, sIL-2R and peripheral blood CD3+, CD4+, CD8+ of the two groups before and after treatment were compared.Results:There were no significant differences of the serum Tg, VEGF, TSGF, CD44V6, sIL-2R of the two groups before treatment. The serum Tg, VEGF, TSGF, CD44V6, sIL-2R of the two groups after treatment were significantly lower than before treatment, and that of the treatment group after treatment were significantly lower than the control group. There were no significantly differences of the peripheral blood CD3+, CD4+, CD8+ of the two groups before treatment. The peripheral blood CD3+, CD4+ of the two groups after treatment were significantly higher than before treatment, the peripheral blood CD8+ of the two groups after treatment were significantly lower than before treatment, and that of the treatment group after treatment were significantly better than the control group.Conclusion:TSH inhibition after total thyroidectomy for patients with DTC can reduce the serum Tg, VEGF, TSGF, CD44V6, sIL-2R levels, improve the cellular immunity function, and it was worthy clinical application.

中药调控CD^(+)_(4)T细胞干预湿疹炎症应答的研究进展

湿疹是一种变态反应性炎症性皮肤病,近期研究表明以CD^(+)_(4)T细胞亚群如Th1/Th2、Th17/调节性T细胞(regulatory T cells,Treg)细胞分化失衡导致湿疹发病中出现过度炎症应答,而中药以改善CD^(+)_(4)T细胞亚群分化平衡干预湿疹免疫微环境具有较好的调节作用。以湿疹炎症应答前沿研究动态,探讨中药在改善调控CD^(+)_(4)T细胞亚群分化干预湿疹致病的作用优势,为中药在改善湿疹临床症状及机制研究提供一定的理论指导。

Association between the level of CD4^+T lymphocyte microRNA-155 and coronary artery disease in patients with unstable angina pectoris

Objective To study the association between the expression of microRNA-155(miRNA-155)in peripheral blood CD4^+T lymphocytes and the level of semrn interferon-7(IFN-7)concentration and the severity of coronary artery disease (CAD).Methods After coronary angiography,252patients with suspected unstable angina pectoris (UAP)were divided into the UAP group (128patients with CAD confirmed by angiography)and the control group (124patients without CAD confirmed by angiography).Fresh peripheral blood was extracted 16-24h before coronary angiography,CD4^+T lymphocytes was tested using immunomagnetic beads,the expression ofmiRNA-155was tested using quantitative PCR and the expression of IFN-7was tested using enzyme-linked immunosorbent assay (ELISA).According to the results of angiography,Gensini score of coronary artery lesions was analyzed.Furthermore,we also analysis the association between the level of miRNA-155in peripheral blood CD4^+T lymphocytes,the level of serum IFN-γand Gensini score of coronary lesion.Results The levels ofmiRNA-155(0.49±0.08vs.0.23±0.09)and IFN-7(227.58±26.01vs.141.23±17.89)in the UAP group were significantly higher than that of the control group,the difference was statistically significant.The level of miRNA-155and IFN-γwere positively correlated with Gensini score of CAD (r =0.534,r =0.713,respectively,all P <0.05).The level of miRNA-155was positively correlated with the level of IFN-γ,(r =0.686,P <0.05).Conclusions The level of miRNA-155in peripheral blood CD4^+T lymphocytes and the level of IFN-γ are closely correlated with the severity of CAD.

胃癌患者血浆hsa_circ_0001588水平与TLR4和T淋巴细胞亚群相关性

目的 探究胃癌患者血浆中hsa_circ_0001588水平,并分析其血浆水平与患者临床特征、Toll样受体4(Toll-like receptors 4,TLR4)、T淋巴细胞亚群的关系。方法 选取2021年3月至2022年5月于我院治疗的胃癌患者124例为研究组,另选取接受胃镜检查确诊为浅表性胃炎的患者130例作为良性组以及健康体检者130例作为对照组。采用实时荧光定量聚合酶链反应、Wmini5146流式细胞仪和双抗体夹心ELISA法检测受试者血浆hsa_circ_0001588水平、TLR4水平和CD3^(+)、CD4^(+)、CD8^(+)、CD4^(+)/CD8^(+)水平。分析血浆hsa_circ_0001588、TLR4、T淋巴细胞对于胃癌的诊断效能以及血浆hsa_circ_0001588水平与TLR4和T淋巴细胞水平的关系。结果 研究组血浆hsa_circ_0001588、TLR4和CD8^(+)表达水平高于良性组和对照组,CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)水平低于良性组和对照组(P<0.05),且研究组患者术后hsa_circ_0001588水平下降。临床分期越高、浸润深度越深、分化程度越低,发生远端转移的患者血浆hsa_circ_0001588水平越高(P<0.05)。血浆hsa_circ_0001588、TLR4和T淋巴细胞对于胃癌均有较好的诊断效能,其联合诊断的整体效能最高。血浆hsa_circ_0001588高表达患者CD3^(+)、CD4^(+)和CD4^(+)/CD8^(+)表达较低,TLR4和CD8^(+)表达较高(P<0.05),其血浆hsa_circ_0001588水平与CD3^(+)、CD4^(+)和CD4^(+)/CD8^(+)表达呈负相关性,与TLR4和CD8^(+)呈正相关性。结论 胃癌患者血浆hsa_circ_0001588水平偏高,且与CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)水平呈负相关性,与TLR4、CD8^(+)呈正相关性。

CD4 T-Lymphocytes Count in HIV-<i>Toxoplasma gondii</i>Co-Infected Pregnant Women Undergoing a Prevention of Mother-to-Child Transmission Program

Toxoplasma gondii (T. gondii) is a parasite responsible of toxoplasmosis, a disease often asymptomatic but with serious consequences in pregnant women and immunocompromised subjects. Objective: This study aimed to investigate the impact of T. gondii infection on CD4+ T lymphocytes count in HIV-infected pregnant women. Methods: This was a cross-sectional study of pregnant women co-infected by HIV and T. gondii. The study was conducted from January to July 2016 at the Prevention of Mother-to-Child Transmission of HIV (PMTCT) sites in the Health District of Lacs in Togo. Diagnosis of HIV was performed by immuno-chromatographic methods with Determine TM HIV-1/2 and immuno-filtration with Tri-Dot HIV-1 and 2 kits. Presence of anti-toxoplasmic IgG and IgM antibodies was established via enzyme immunoassay using ELISA-BIOREX&reg;kit. Flow cytometry was used to count CD4+ T lymphocytes. Results: Our study found that of the 4599 pregnant women, 111 (2.41%) were HIV-positive. Among them, 109 (98.20%) were infected by HIV-1 and 2 (1.98%) by HIV-2. Antibodies against T. gondii were detected in 5.36% (IgM), 25% (IgG) and 3.57% (both IgM and IgG) of HIV 56 infected women. There was no significant difference between CD4 cell count in HIV (+)/T. gondii IgM (-)/IgG (-) infected pregnant women (378.8 ± 222.8 cell//μl) compared to HIV (+)/T. gondii/IgM (+) (457.3 ± 183.3 cell//μl), HIV (+)/T. gondii IgG (+) (419.4 ± 287.3 cell//μl) and HIV (+)/T. gondii IgM/IgG (+) (480.5 ± 252.4 cell/μl). Conclusion: This study showed that intracellular parasite T. gondii did not alter CD4+ T lymphocytes count in HIV/T. gondii co-infected pregnant women.

Viral Characteristic of HIV Infected Patients Naïf of Anti-Retroviral Therapy with CD4+ T Lymphocytes Rate Greater than 350 per Microliter of Blood in LoméTogo

Objective: To evaluate the virological status of ineligible HIV patients for anti-retroviral therapy based on the criterion of CD4+ T lymphocytes rate over than 350/μl of blood. Method: This is a prospective study which was conducted from November 2011 to July 2012 in the tropical and infectious disease department of CHU Sylvanus Olympio of Lomé. All HIV-1 infected patients whose CD4+ T lymphocytes rate was ≥350/μl of blood were retained. The count of CD4+ T lymphocytes was made by cytometer FACSCalibur? flow of BD biosciences and the determination of viral load was achieved by NASBA laboratory method of Biomérieux. Results: We have recruited 102 PLWHA aged between 19 and 58 years with a median of 35 years. Biologically, 102 patients had a T-CD4 rate between 355 and 432/μl of blood. The determination of viral load showed a very high viral replication more than 10,000 copies/ml among all patients and 28 (27.5%) patients had a viral load > 100,000 copies/ml of blood. Conclusion: Our results argue for a reconsideration of the criteria for starting antiretroviral therapy in Togo by including virological data if necessary in patients with T-CD4 rate below 500/μl of blood.

Role of CD4+ and CD8+ T Lymphocyte in the Onset of Stroke in People Living with HIV in Pointe-Noire

Objective: To determine the role of CD4+ and CD8+ T lymphocytes in the onset of stroke in people living with HIV. Methodology: This was a descriptive, cross-sectional study from January to July 2019, in the neurology department of loandjili general hospital, including any patient hospitalized for a first episode of stroke confirmed by brain scan. The study variables were: age, sex, CRP value, serum T cell CD4+, CD8+. The statistical analysis was carried out using the EPI info 7 software. Results: Twenty stroke patients were included. The relative frequency of HIV was 20%. The risk factors were potentiated by immunosuppression of CD4+ T cells. Sixty percent (60%) of the patients had a CD4+ count < 200/mm3 and the mean CD4+ count was ±191/mm3. Stroke was the predominant mechanism of injury with a frequency of 70%, the only injury mechanism of stroke in patients with CD8+ T cell count > 800/mm3 (p = 0.04). Conclusion: Risk factors are potentiated by TCD4+ lymphocyte immunosupression, also CD8+ lymphocytes of immune system activation marker are a cardiovascular risk factor for living people with HIV.

Effect of irinotecan combined with cisplatin on serum CD105, OPN, SCCAg, CEA and T lymphocyte subsets in patients with cervical cancer

Objective:To study the effect of irinotecan combined with cisplatin on serum CD105, OPN, SCCAg, CEA and T lymphocyte subsets in patients with cervical cancer.Methods: A total of 90 patients with cervical cancer in our hospital from May 2014 to May 2016 were enrolled in this study. The subjects were divided into the control group (n=45) and the treatment group (n=45) randomly. The control group were treated with radiotherapy, the treatment group were treated with irinotecan combined with cisplatin. The two groups were treated for 3 periods. The serum CD105, OPN, SCCAg, CEA levels and peripheral blood CD3+, CD4+/CD3+, CD8+cells of the two groups before and after treatment were compared.Results: There were no significantly differences of the serum CD105, OPN, SCCAg, CEA levels and peripheral blood CD3+, CD4+/CD3+, CD8+ cells of the two groups before treatment. The serum CD105, OPN, SCCAg and CEA levels of the two groups after treatment were significantly lower than before treatment, and that of the treatment group were significantly lower than the control group. The peripheral blood CD3+, CD4+/CD3+ cells of the two groups after treatment were significantly higher than before treatment, CD8+ cells of the two groups after treatment were significantly lower than before treatment, and that of the treatment group were significantly better than the control group.Conclusion: Irinotecan combined with cisplatin can significantly reduce the serum CD105, OPN, SCCAg, CEA levels, improve peripheral blood CD3+, CD4+/CD3+, CD8+ levels of patients with cervical cancer, and it was worthy clinical application.

2020—2022年江苏省某VCT门诊新发现HIV感染者首次CD^(+)_(4)T计数和WB带型关系

目的探讨CD^(+)_(4)T淋巴细胞(CD4)计数和WB带型的关系。方法选取2020—2022年江苏省某VCT门诊新发现的HIV感染者309例,采用流式细胞仪进行CD4检测,全自动免疫印迹仪测定WB。结果江苏省309例新发现HIV感染者以大专及以上学历、年龄<40岁未婚男男性行为人群为主,且存在晚发现情况。CD4计数<200个/μL 41例(占13.5%),200~<350个/μL 91例(占30.0%),350~<500个/μL 97例(占32.0%),≥500个/μL 80例(占26.4%)。WB带型检测结果显示,全带型、缺失p55、缺失p55+p39、缺失p55+p39+p17的带型是4个主要带型,分别占22.3%、22.0%、19.7%、11.0%,全带型检出率随着CD4计数的增加而提高(χ^(2)_(趋势)=11.59,P<0.05)。不同CD4计数水平感染者的各抗体条带检出率,仅p55的检出率在不同水平间的差异有统计学意义(χ^(2)=12.37,P<0.05),且随着细胞计数的增加而增高。结论新发现HIV感染者首次CD4计数<200个/μL的人群中,全带型检出率低于其余各组;p55的出现率会随着机体免疫力的下降而降低;缺p55、缺p55+p39人群可能疾病进展较快,需要尽早抗病毒治疗。

The relationship of different respiratory virus infection with pediatric asthma attack as well as cytokine and lymphocyte subset levels

Objective:To study the relationship of different respiratory virus infection with pediatric asthma attack as well as cytokine and lymphocyte subset levels.Methods: A total of 85 children who were diagnosed with bronchial asthma in our hospital between May 2013 and March 2016 were selected as asthma group and further divided into asthma-RSV group, asthma-AV group, asthma-PIV group, asthma-IFV group and pure asthma group according to the condition of respiratory virus infection, and 70 healthy children who received physical examination in our hospital during the same period were selected as the control group. Spirometer was used to determine airway function parameters, enzyme-linked immunosorbent assay kits were used to determine serum cytokine contents, and flow cytometry was used to determine peripheral blood lymphocyte subset contents.Results: FEV1/FVC, FEF25, FEF50 and FEF75 levels, serum IL-2, IFN-γ and TGF-β1 contents as well as peripheral blood Th1 and Treg cell contents of asthma groups were significantly lower than those of control group while serum IL-4, IL-5 and IL-17 contents as well as peripheral blood Th2 and Th17 cell contents were significantly higher than those of control group;FEV1/FVC, FEF25, FEF50 and FEF75 levels, serum IL-2, IFN-γ and TGF-β1 contents as well as peripheral blood Th1 and Treg cell contents of asthma-RSV group and asthma-IFV group were significantly lower than those of pure asthma group while serum IL-4, IL-5 and IL-17 contents as well as peripheral blood Th2 and Th17 cell contents were significantly higher than those of pure asthma group;these indexes of asthma-AV group and asthma-PIV group were not significantly different from those of pure asthma group.Conclusion: RSV and IFV infection can affect the airway function and the balance of CD4+T cell subsets to promote the development of asthma.

帕米膦酸二钠联合复方苦参注射液对非小细胞肺癌患者外周血CEA、CA125、IL-2、IL-4和T淋巴细胞亚群的影响

目的探讨帕米膦酸二钠单药及联合复方苦参注射液治疗非小细胞肺癌,对其外周血癌胚抗原(CEA)、糖类抗原125(CA125)、血清细胞因子白介素-2(IL-2)、白介素-4(IL-4)及T淋巴细胞亚群的影响。方法选取2018年1月至2022年3月句容市人民医院收治的非小细胞肺癌患者50例。采取分别抽样法分组,即单药帕米膦酸二钠干预的单药组(n=25)和帕米膦酸二钠联合复方苦参注射液干预的联合治疗组(n=25)。观察两组临床指标。结果联合治疗组的客观缓解率、临床获益率及生活质量均高于单药组,差异有统计学意义(P<0.05);联合治疗组的CEA、CA125水平低于单药组,差异有统计学意义(P<0.05);联合治疗组IL-2水平高于单药组、IL-4水平低于单药组,差异有统计学意义(P<0.05);联合治疗组CD4^(+)、CD4^(+)/CD8^(+)水平高于单药组,差异有统计学意义(P<0.05);联合治疗组的不良反应总发生率低于单药组,差异有统计学意义(P<0.05)。结论帕米膦酸二钠联合复方苦参注射液治疗非小细胞肺癌,可调节炎性因子水平,增强抗肿瘤活性及免疫功能,减轻炎性反应,不良反应发生率低。

脓毒症性急性肾损伤患者CD_4^+ T淋巴细胞内三磷酸腺苷水平变化及其与肾功能转归的关系

目的探讨CD_4^+T淋巴细胞内三磷酸腺苷(CD_4^+T cell-iATP)水平预测脓毒症并发急性肾损伤(AKI)患者预后的价值。方法前瞻性选择2013年7月—2014年12月于丽水市中心医院ICU、感染科及肾内科住院的脓毒症并发AKI患者69例为研究对象,分别于人组0、48、96h检测患者CD_4^+T cell-iATP水平。根据肾功能临床转归情况将患者分为肾功能完全恢复组(18例)、肾功能部分恢复组(38例)、依赖透析组(4例)和死亡组(9例)。结果各组eGFR、功能衰竭脏器数量、AKI分期及0、48h CD_4^+T cell-iATP水平比较,差异有统计学意义(P<0.05)。多分类Logistic回归分析结果显示,相对于预后不良(依赖透析或死亡),eGFR、功能衰竭脏器数量和48h CD_4^+T cell-iATP水平为肾功能完全恢复、肾功能部分恢复的影响因素(P<0.05)。ROC曲线分析显示,48h CD_4^+T cell-iATP水平预测脓毒症并发AKI患者预后的ROC曲线下面积为0.926(P<0.01),取48h CD_4^+T cell-iATP临界点为344.2μg/L时,灵敏度为92.3%,特异度为87.5%。结论 CD_4^+T cell-iATP水平低的脓毒症患者肾功能恢复良好,脓毒症患者早期CD_4^+T cell-iATP水平是肾功能转归的预测指标。

日本血吸虫慢性感染致CD_4^+ T细胞凋亡的分子基础

目的 立足于全基因水平考察日本血吸虫慢性感染小鼠CD+4T细胞的凋亡相关基因的变化。方法 采用三色流式细胞术结合高密度寡核苷酸芯片 (Affemetrix芯片 ) ,对日本血吸虫感染 13周的小鼠脾脏中的CD+4T细胞进行凋亡观察及基因转录分析 ,获得凋亡相关基因的表达图谱。结果 日本血吸虫慢性感染小鼠CD+4T细胞的凋亡率均明显高于正常小鼠 (P <0 0 1) ;感染小鼠的CD+4T细胞中有 2 5个凋亡相关基因与正常小鼠相比有显著性差异 ,包括凋亡促进基因—生长抑制和DNA损伤 -GADD家族和肿瘤坏死因子α诱导蛋白 3,凋亡抑制基因—IAP等。结论 日本血吸虫慢性感染小鼠CD+4T细胞的凋亡可能是导致宿主免疫下调的原因之一。凋亡通路中存在复杂的凋亡促进基因和抑制基因的相互作用 ,其中肿瘤坏死因子α诱导蛋白 3可能是日本血吸虫感染诱导CD+4T细胞凋亡的特征性因子。

G-CSF对健康人骨髓和外周血CD_(34)^+细胞和T细胞亚群影响的动态观察

目的 :探讨G -CSF对健康人骨髓及外周血CD3 4 + 细胞和T细胞亚群的影响。方法 :对 12例健康人 ,以G -CSF15 0 μg/ 12h ,皮下注射 ,连用 6d。应用流式细胞仪测定CD3 4 + 和T细胞亚群。结果 :应用G -CSF4 8h后 ,骨髓CD3 4 + 细胞开始明显增加 ,72h后外周血CD3 4 + 细胞开始明显增加 ,96h后两者达峰值 ,均较应用前差异显著 (P <0 .0 1)。T淋巴细胞亚群变化不明显 (P>0 .0 5 )。结论 :健康人应用G -CSF后骨髓及外周血CD3 4 + 细胞逐渐增加并于 96h后达到高峰 ,T细胞亚群则无明显变化。

早发型重度子痫前期分娩前后CD28/CTLA-4的相关研究

目的:探讨白细胞分化抗原28/细胞毒性T淋巴细胞相关抗原4(CD28/CTLA-4)与早发型重度子痫前期发病的关系。方法:采用流式细胞技术分别测定30例早发型重度子痫前期患者分娩前后的CD28、CTLA-4、CD28/CTLA-4表达水平,同时测量各组受试者血压及肝肾功能。结果:早发型重度子痫前期患者分娩前CD3+CD4+CTLA-4+、CD3+CD8+CTLA-4+高于分娩后,CD3+CD4+CD28+/CD3+CD4+CTLA-4+、CD3+CD8+CD28+/CD3+CD8+CTLA-4+低于分娩后,差异有统计学意义(均P<0.05)。CD3+CD4+CD28+/CD3+CD4+CTLA-4+、CD3+CD8+CD28/CD3+CD8+CTLA-4+两者无直线相关性(r=-0.037,P=0.844)。结论:早发型重度子痫前期患者分娩后较分娩前CTLA-4的表达下降,CD28/CTLA-4上升,可能提示CD28/CTLA-4免疫偏移与子痫前期的发生有关。

肺癌患者胸腔积液及外周血CD_4^+CD_(25)^+T细胞、Foxp3基因表达及意义

目的探讨CD4+CD2+5T细胞及Foxp3基因在肺癌发生、发展中的作用及机制。方法流式细胞仪检测32例肺癌合并胸腔积液患者外周血、胸腔积液及30例无胸腔积液肺癌患者外周血、胸腔冲洗液中CD4+CD2+5T细胞水平,RT-PCR法检测特异性转录因子Foxp3基因在胸腔积液及外周血中的表达。结果肺癌合并胸腔积液患者胸腔积液中CD4+CD25+T细胞水平显著高于无胸腔积液患者胸腔冲洗液及外周血;Foxp3基因在肺癌患者外周血和胸腔积液中呈高表达。结论肺癌患者外周血和胸腔积液中增高的CD4+CD2+5T细胞主要是CD4+CD2+5调节性T细胞。CD4+CD25+调节性T细胞可促进肺癌的进一步恶化,其机制可能是抑制肿瘤免疫。

CD4^+T淋巴细胞三磷酸腺苷检测在预测肝移植术后感染中的作用

目的探讨外周血CD4+T淋巴细胞内三磷酸腺苷(ATP)水平与肝移植术后感染之间的关系。方法采集肝移植术后患者外周血样本142例次,应用ImmuKnow免疫细胞功能检测试剂盒检测ATP。根据患者肝移植术后是否发生感染及不同的免疫应答状态分组,分析CD4+T淋巴细胞ATP水平与肝移植术后感染的关系。结果根据患者临床状态将患者分为感染组和非感染组,其ATP值分别为236.0(41.0~512.0)μg/L和371.5(9.0~1000.0)μg/L,两组比较差异有统计学意义(P=0.001)。根据患者外周血CD4+T淋巴细胞ATP水平将患者分为低免疫应答组、正常免疫应答组和高免疫应答组,其肝移植术后感染的发生率分别为25.0%、13.6%和0,各组间移植术后感染的发生率比较差异有统计学意义(P=0.003)。结论外周血CD4+T淋巴细胞ATP值与肝移植术后感染间具有良好的相关性,有利于指导临床治疗。

老年肺炎患者IFN-γ和IL-4在CD8^+T细胞中的表达及临床意义

目的探讨免疫衰老在老年肺炎中的作用。方法随机选择青年、老年健康志愿者各15人,青年、老年肺炎患者各20例,采用流式细胞分析技术检测各组样本外周血CD4+/CD8+的比值,CD3+、CD4+和CD8+T细胞胞内IFN-γ和IL-4的表达。结果①老年组外周血CD4+/CD8+的比值高于青年组,而肺炎和非肺炎组之间差异无显著性。②各组外周血CD3+、CD4+T细胞胞内IFN-γ和IL-4表达的差异无显著性,而CD8+T细胞胞内IFN-γ的表达,老年组高于青年组(P<0.05),而相同年龄组的肺炎和非肺炎组之间差异无显著性。CD8+T细胞胞内IL-4的表达老年肺炎组高于其他3组(P<0.05),青年健康组、青年肺炎组、老年健康组之间差异无显著性。③在4组之间IFN-γ/IL-4的比值差异无显著性。结论免疫衰老在CD4+、CD8+T细胞明显不同,CD4+T细胞胞内分泌IFN-γ和IL-4差异无显著性,而CD8+T细胞IFN-γ的产生在老年人显著增加,IL-4的产生仅在老年肺炎组增加。CD8+T细胞的增龄性改变可能在老年人肺炎中发挥重要作用。

子宫内膜异位症患者T细胞亚群CD_4、CD_8的测定

目的 :通过检测子宫内膜异位症患者T淋巴细胞亚群 ,了解CD4 和CD8T细胞及其CD4 /CD8比值与正常对照之间的改变 ,探讨子宫内膜异位症的免疫病理变化。方法 :采用荧光激活细胞分析仪 (FACS) ,检测外周血T细胞亚群CD4 和CD8的比例及CD4 /CD8比值。结果 :子宫内膜异位症组外周血CD4 比例高于对照组 ,CD8比例低于对照组 ,CD4 /CD8比值高于对照组 ,各组间差异有显著性 (P <0 .0 0 1)。结论 :子宫内膜异位症患者免疫调节功能紊乱 ,辅助性T细胞功能增强而抑制性T细胞功能降低 ,淋巴细胞过度活化 ,使子宫内膜细胞脱落。

应用G-CSF对不同人群外周血CD_(34)^+细胞和T细胞亚群影响的动态变化

目的 探讨重组人粒细胞集落刺激因子 (G -CSF)对健康人及处于完全缓解的恶性血液病患者的外周血CD+34细胞和T细胞亚群的影响。方法 对 12例健康人和 16例自体外周血干细胞移植患者 ,以G -CSF 15 0 μg 12h ,皮下注射 ,连用 6d。应用流式细胞仪测定外周血CD+34 和T细胞亚群。结果 (1)应用G -CSF前 ,两者的外周血CD+34细胞分别为 (0 .39± 0 .2 7) %和 (0 .4 7± 0 .2 5 ) % ,两者之间无明显差异 (P >0 .0 5 )。应用 72h后 ,CD+34 细胞分别达(1.2 9± 0 .6 4 ) %和 (1.4 7± 0 .95 ) % ,较前均有明显增加 (P <0 .0 1) ,两者之间无明显差异 (P >0 .0 5 )。应用 96h后 ,CD+ 34 细胞达高峰 ,分别为 (1.4 1± 0 .73) %和 (1.5 8± 0 .83) % ,两者之间无明显差异 (P >0 .0 5 ) ,但较应用G -CSF前差异显著 (P <0 .0 1)。 (2 )无论是否应用G -CSF ,恶性血液病患者的T细胞亚群比例均处于倒置状态 ,而健康人T细胞亚群则比例正常。随两者应用G -CSF后CD+34 细胞逐渐增加 ,T细胞亚群变化不明显。结论 健康人及处于完全缓解的恶性血液病患者 ,在应用G -CSF后 ,外周血CD+ 34 细胞比例逐渐增加并于 96h后达到高峰 ,T细胞亚群无明显变化。