人类白细胞抗原-DR/CD4^(+)T淋巴细胞白细胞介素6联合降钙素原预测ICU重症急性胰腺炎继发感染效能及对抗菌药物合理使用的指导价值

目的:分析人类白细胞抗原-DR/CD4^(+)T淋巴细胞(HLA-DR/CD4^(+))、白细胞介素6(IL-6)及降钙素原(PCT)在ICU重症急性胰腺炎(SAP)继发感染患者中的诊断效能及对抗菌药物合理使用的指导价值。方法:2020年5月至2023年12月在我院ICU收治的SAP患者80例纳入研究。按照是否继发感染将患者分为感染组(n=43)及未感染组(n=37)。收集所有患者临床资料,包括一般资料、实验室指标、抗菌治疗情况。比较两组一般资料及实验室指标,采用Logistic回归分析重症SAP继发感染的独立危险因素,采用受试者工作特征曲线(ROC)分析血清HLA-DR/CD4^(+)、IL-6及PCT预测SAP继发感染的效能。结果:感染组APACHEⅡ评分大于未感染组(P<0.05)。两组性别、年龄、病因、并发症(高血压、2型糖尿病及高脂血症)情况比较无显著差异(P>0.05)。感染组脂肪酶、IL-6及PCT水平高于未感染组(P<0.05),HLA-DR/CD4^(+)水平低于未感染组(P<0.05)。脂肪酶高表达(OR=2.354,95%CI 1.491~3.716)、HLA-DR/CD4^(+)高表达(OR=3.508,95%CI 1.283~9.588)、IL-6高表达(OR=4.284,95%CI 1.469~12.493)及PCT高表达(OR=5.743,95%CI 1.530~21.563)均是SAP继发感染的独立危险因素(P<0.05)。血清HLA-DR/CD4^(+)、IL-6及PCT及三者联合诊断SAP继发感染的AUC值分别为0.809、0.778、0.819及0.959,具有一定预测价值。联合诊断的AUC值及诊断效能明显大于单独HLA-DR/CD4^(+)(z=3.161,P=0.002)、IL-6(z=3.822,P<0.001)及PCT(z=3.346,P=0.001)诊断。局部感染组血清HLA-DR/CD4^(+)水平高于严重感染组,IL-6及PCT水平均低于严重感染组(P<0.05)。局部感染组抗菌药物使用时间、ICU住院时间及总住院时间均较严重感染组显著缩短(P<0.05)。结论:HLA-DR/CD4^(+)高表达、IL-6高表达及PCT高表达均是SAP继发感染的独立危险因素,可有效预测SAP继发感染。

乳酸/白蛋白比值、白细胞介素-6、CD4^(+)T淋巴细胞计数对重症肺炎并脓毒症患者短期预后的预测价值

目的探讨乳酸/白蛋白比值(LAR)、白细胞介素-6(IL-6)、CD4^(+)T淋巴细胞计数对重症肺炎并脓毒症患者28 d死亡的预测价值。方法选择2022年1月至2023年6月郑州大学附属郑州中心医院呼吸重症医学科(RICU)收治的73例重症肺炎并脓毒症患者为研究对象,依据患者28 d生存结局将其分为生存组(n=43)和死亡组(n=30)。通过查阅电子病历收集患者的临床资料,包括:年龄、性别及合并高血压、糖尿病、冠状动脉性心脏病(CHD)情况,入住RICU治疗时的序贯器官衰竭评分(SOFA)、急性生理与慢性健康状态评价系统Ⅱ(APACHEⅡ)评分、平均动脉压(MAP)、英国胸科协会改良肺炎评分(CURB-65)、总胆红素(Tbil)、血肌酐(Scr)、血小板计数(PLT)、白细胞(WBC)计数、降钙素原(PCT)、C-反应蛋白(CRP)。入住RICU后第1、3、7天,抽取患者动脉血,应用全自动血气分析仪检测乳酸水平;抽取患者外周静脉血,应用酶联免疫吸附试验检测患者血清中白蛋白和白细胞介素-6(IL-6)水平,流式细胞仪检测CD4^(+)T淋巴细胞亚群计数;计算2组患者第1、3、7天的LAR。比较2组患者的临床资料及第1、3、7天的LAR、IL-6及CD4^(+)T淋巴细胞计数水平,应用logistic回归分析重症肺炎并脓毒症患者28 d死亡的影响因素,受试者操作特征(ROC)曲线评估各影响因素对重症肺炎并脓毒症患者28 d死亡的预测价值。结果2组患者的性别、年龄、合并高血压占比、合并糖尿病占比、合并CHD占比、RICU住院时间以及入住RICU时的Tbil、MAP、PLT、Scr、WBC、PCT、CRP比较差异均无统计学意义(P>0.05);死亡组患者的APACHEⅡ评分、CURB-65评分显著高于生存组(P<0.05)。第1、3、7天,死亡组患者的CD4^(+)T淋巴细胞计数显著低于生存组,SOFA评分显著高于生存组(P<0.05)。第1天,死亡组与生存组患者的LAR、IL-6水平比较差异无统计学意义(P>0.05);第3、7天,死亡组患者的LAR及IL-6水平显著高于生存组(P<0.05)。生存组患者第3、7天的LAR、IL-6、SOFA评分显著低于第1天,第7天的LAR、IL-6、SOFA显著低于第3天(P<0.05);生存组患者第3、7天的CD4^(+)T淋巴细胞计数显著高于第1天(P<0.05);生存组患者第7天与第3天的CD4^(+)T淋巴细胞计数比较差异无统计学意义(P>0.05)。死亡组患者第7天的IL-6水平显著低于第1、3天(P<0.05),第1天的IL-6水平与第3天比较差异无统计学意义(P>0.05);LAR、CD4^(+)T淋巴细胞计数、SOFA评分各时间点间比较差异无统计学意义(P>0.05)。Pearson相关性分析显示,第3天,重症肺炎并脓毒症患者LAR、IL-6水平与SOFA评分呈显著正相关(r=0.385、0.394,P<0.05);第7天,LAR、IL-6与SOFA评分亦呈显著正相关(r=0.418、0.402,P<0.05);第3、7天,CD4^(+)T淋巴细胞计数与SOFA评分均呈显著负相关(r=-0.451、-0.454,P<0.05)。Logistic回归分析结果显示,APACHEⅡ评分、第3天的LAR、IL-6、CD4^(+)T淋巴细胞计数及第7天的IL-6、CD4^(+)T淋巴细胞计数是重症肺炎并脓毒症28 d死亡的影响因素(P<0.05)。ROC曲线显示,APACHEⅡ评分,第3天的LAR、IL-6、CD4^(+)T淋巴细胞计数及三者联合,第7天的IL-6、CD4^(+)T淋巴细胞计数及二者联合对重症肺炎并脓毒症患者的28 d死亡均有一定预测价值(P<0.05);第3天的LAR、IL-6和CD4^(+)T淋巴细胞计数联合预测重症肺炎并脓毒症患者28 d死亡的ROC曲线下面积(AUC)为0.891,APACHEⅡ评分预测重症肺炎并脓毒症患者28 d死亡的AUC值为0.769,第3天的LAR、IL-6、CD4^(+)T淋巴细胞计数预测重症肺炎并脓毒症28 d死亡的AUC值分别为0.795、0.757、0.770,第7天的IL-6、CD4^(+)T淋巴细胞计数及二者联合预测重症肺炎并脓毒症28 d死亡的AUC值分别为0.743、0.802、0.888。结论入院3 d LAR、3 d IL-6、3 d CD4^(+)T淋巴细胞计数以及7 d IL-6、7 d CD4^(+)T淋巴细胞计数是影响重症肺炎并脓毒症患者28 d死亡的相关因素;联合检测第3天的LAR、IL-6、CD4^(+)T淋巴细胞计数能够更好地评估患者病情严重程度及预后。

C57BL/6J小鼠背景的CD19嵌合抗原受体T细胞的制备及优化

目的:探索C57BL/6J小鼠CD3^(+)T细胞体外刺激条件、最佳培养和感染时间,以期提高CD19嵌合抗原受体T细胞(m CD19 CAR-T)的感染效率。方法:将纯化的C57BL/6J小鼠CD3^(+)T细胞在包被CD3/CD28抗体(anti-CD3/CD28 coated)、包被CD3抗体+可溶性CD28抗体(anti-CD3 coated+soluble anti-CD28)和包被CD3抗体(anti-CD3 coated)3种不同条件下分别刺激12 h和24 h,后续培养24 h、48 h和72 h并记录细胞克隆数。在上述3种条件下分别刺激C57BL/6J小鼠CD3^(+)T细胞12、24和36 h,然后加入白介素(IL)-2(100 U/ml),镜下记录培养24 h、48 h和72 h的细胞克隆数;此条件下取刺激24 h的CD3^(+)T细胞,感染m CD19 CAR-T逆转录病毒,制备m CD19 CAR-T细胞,流式检测48 h时3组中GFP+CAR-T细胞的百分率。结果:利用获得BALB/c小鼠m CD19 CAR-T细胞的最优化条件,制备C57BL/6J小鼠的m CD19 CAR-T细胞感染效率仅5.23%;anti-CD3^(+)soluble anti-CD28 coated刺激C57BL/6J小鼠CD3^(+)T细胞24 h,终止刺激继续培养至48 h时细胞克隆数最高;在上述条件刺激24 h后加入IL-2培养48 h,anti-CD3^(+)soluble anti-CD28 coated组T细胞增殖克隆数量显著增加,且CAR-T细胞感染效率为17.63%±4.17%。结论:C57BL/6J小鼠来源T细胞制备CAR-T细胞的最佳条件与BABL/c小鼠不同;anti-CD3^(+)soluble anti-CD28 coated+IL-2刺激条件下诱导的T细胞感染逆转录病毒后可获得最高效率的m CD19 CAR-T细胞。

Donor-derived CD 19 CAR-T Cells versus Chemotherapy Plus Donor Lymphocyte Infusion for Treatment of Recurrent CD 19-positive B-ALL after Allogeneic Hematopoietic Stem Cell Transplantation

Objective:This study aimed to compare the efficacy of anti-CD19 chimeric antigen receptor T cells(CAR-T cells)versus chemotherapy plus donor lymphocyte infusion(chemo-DLI)for treating relapsed CD 19-positive B-cell acute lymphoblastic leukemia(B-ALL)after allogeneic hematopoietic stem cell transplantation(allo-HSCT).Methods:Clinical data of 43 patients with B-ALL who relapsed after allo-HSCT were retrospectively analyzed.Twenty-two patients were treated with CAR-T cells(CAR-T group),and 21 with chemotherapy plus DLI(chemo-DLI group).The complete remission(CR)and minimal residual disease(MRD)-negative CR rates,leukemia-free survival(LFS)rate,overall survival(OS)rate,and incidence of acute graft-versus-host disease(aGVHD),cytokine release syndrome(CRS)and immune effector cell-associated neurotoxicity syndrome(ICANS)were compared between the two groups.Results:The CR and MRD-negative CR rates in the CAR-T group(77.3%and 61.5%)were significantly higher than those in the chemo-DLI group(38.1%and 23.8%)(P=0.008 and P=0.003).The 1-and 2-year LFS rates in the CAR-T group were superior to those in the chemo-DLI group:54.5%and 50.0%vs.9.5%and 4.8%(P=0.0001 and P=0.00004).The 1-and 2-year OS rates in the CAR-T versus chemo-DLI group were 59.1%and 54.5%vs.19%and 9.5%(P=0.011 and P=0.003).Six patients(28.6%)with grade 2-4 aGVHD were identified in the chemo-DLI group.Two patients(9.1%)in the CAR-T group developed grade 1-2 aGVHD.Nineteen patients(86.4%)developed CRS in the CAR-T group,comprising grade 1-2 CRS in 13 patients(59.1%)and grade 3 CRS in 6 patients(27.3%).Two patients(9.1%)developed grade 1-2 ICANS.Conclusion:Donor-derived anti-CD19 CAR-T-cell therapy may be better,safer,and more effective than chemo-DLI for B-ALL patients who relapse after allo-HSCT.

T淋巴细胞亚群、IL-6在胃癌患者中的表达及其与预后的相关性

目的分析外周血T淋巴细胞亚群及白细胞介素-6(interleukin-6,IL-6)在胃癌患者中的表达,探究其与预后的相关性。方法选取2021年6月至2023年6月连云港市第二人民医院收治的106例胃癌患者为试验组,入院次日检测其外周血T淋巴细胞亚群(CD3^(+)、CD4^(+)、CD8^(+))及IL-6水平。选取同时段于连云港市第二人民医院进行体检的健康者80例为对照组,体检当日检测其外周血T淋巴细胞亚群及IL-6水平。比较两组T淋巴细胞亚群及IL-6水平。胃癌患者院外随访6个月,根据患者死亡、存活情况将其分为预后不良组(17例)、预后良好组(89例)。预后不良组男10例(58.82%),女7例(41.18%),年龄(60.47±5.89)岁;文化程度:中学及以上9例(52.94%),中学以下8例(47.06%)。预后良好组男55例(61.80%),女34例(38.20%),年龄(60.08±5.71)岁;文化程度:中学及以上32例(35.96%),中学以下57例(64.04%)。logistic回归分析影响胃癌患者预后的因素。采用受试者操作特征曲线(ROC)评估外周血T淋巴细胞亚群及IL-6预测胃癌患者预后的价值。采用t检验和χ^(2)检验。结果试验组CD3^(+)、CD4^(+)水平低于对照组[(55.27±8.72)%比(68.97±6.45)%、(26.42±10.21)%比(38.12±5.07)%],CD8^(+)、IL-6水平高于对照组[(33.36±6.02)%比(24.66±3.75)%、(6.97±3.29)ng/L比(3.62±1.01)ng/L],差异均有统计学意义(t=-11.821、-9.413、11.360、8.803,均P<0.05)。预后不良组CD3^(+)、CD4^(+)水平低于预后良好组[(45.12±10.06)%比(57.21±6.97)%、(20.01±10.12)%比(27.64±9.81)%],CD8^(+)、IL-6水平、肿瘤分期Ⅳ期患者占比高于预后良好组[(40.12±6.01)%比(32.07±5.12)%、(9.75±3.16)ng/L比(6.44±3.05)ng/L、70.59%(12/17)比32.58%(29/89)],差异有统计学意义(t=-6.068、-2.924、5.774、4.077,χ^(2)=8.692,均P<0.05)。logistic回归分析显示,肿瘤分期、CD3^(+)、CD8^(+)、IL-6水平是影响胃癌患者预后的因素(均P<0.05)。CD3^(+)、CD8^(+)、IL-6预测患者预后不良的ROC下面积分别为0.847、0.853、0.768。结论胃癌患者CD3^(+)、CD4^(+)低表达,CD8^(+)及IL-6高表达。CD3^(+)、CD8^(+)、IL-6水平是影响胃癌患者预后的因素。

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.

B7-H6在宫颈上皮内瘤变、宫颈癌组织中表达差异及与肿瘤浸润T淋巴细胞、预后的相关性

目的探究宫颈上皮内瘤变、宫颈癌组织中B7同源体6(B7-H6)表达差异与肿瘤浸润T淋巴细胞、预后相关性。方法选取2019年6月—2021年3月60例经病理检查确诊为宫颈癌的手术患者作为研究组,另选同期同年龄段60例宫颈上皮内瘤变作为对照组。比较2组组织B7-H6表达情况(H-score评分)及血清B7-H6水平,并比较研究组不同肿瘤浸润T淋巴细胞浸润程度患者H-score评分、血清B7-H6水平,分析研究组H-score评分、血清B7-H6水平与肿瘤浸润T淋巴细胞浸润程度的相关性。研究组术后随访1年,比较不同预后患者一般资料、H-score评分、血清B7-H6水平,探讨预后影响因素,并分析H-score评分和血清B7-H6水平预测患者预后的价值。结果研究组H-score评分和血清B7-H6水平高于对照组(P<0.01)。研究组肿瘤浸润T淋巴细胞浸润程度0级患者H-score评分、血清B7-H6水平高于1级、2级患者,且1级患者高于2级患者(P<0.05)。研究组H-score评分、血清B7-H6水平与肿瘤浸润T淋巴细胞浸润程度呈负相关(P<0.01)。多因素Logistic回归分析显示,肿瘤直径、国际妇产科协会(FIGO)分期、淋巴结转移、间质浸润深度、H-score评分、血清B7-H6水平均为宫颈癌手术患者预后不良的独立危险因素(P<0.01)。肿瘤直径、FIGO分期、淋巴结转移、间质浸润深度、H-score评分和血清B7-H6水平预测宫颈癌手术患者预后不良的曲线下面积(AUC)分别为0.736、0.726、0.714、0.712、0.842和0.840,H-score评分和血清B7-H6水平预测的AUC分别大于肿瘤直径、FIGO分期、淋巴结转移、间质浸润深度预测的AUC(P<0.05)。H-score评分和血清B7-H6水平在预测宫颈癌手术患者预后不良方面拥有良好的临床效用。结论宫颈癌组织B7-H6表达高于宫颈上皮内瘤变,且宫颈癌组织B7-H6表达、血清B7-H6水平与肿瘤浸润T淋巴细胞浸润程度呈负相关,也是宫颈癌手术患者预后不良的独立危险因素,在预测预后方面具有一定临床价值。

SAA、IL-6、CRP及T淋巴细胞亚群联合检测在类风湿性关节炎患者中的应用价值

目的探讨血清淀粉样蛋白A(SAA)、白细胞介素-6(IL-6)、C反应蛋白(CRP)及T淋巴细胞亚群联合检测在类风湿性关节炎患者中的应用价值并进行相关危险因素分析。方法选取2020年10月至2023年5月在玉林市第一人民医院确诊为类风湿性关节炎的患者66例为类风湿关节炎组,同期选择体检健康者33名为对照组,比较两组SAA、IL-6、CRP及T淋巴细胞亚群水平的差异。结果类风湿性关节炎组SAA、IL-6、CRP、CD3^(+)T%及CD4^(+)T%水平高于对照组,CD8^(+)T%水平低于对照组,差异有统计学意义(P<0.05)。Spearman相关分析结果显示,IL-6与SAA、CRP、CD3^(+)T%及CD4^(+)T%呈正相关(P<0.05);CD4^(+)T%与SAA、IL-6、CRP、CD3^(+)T%呈正相关(P<0.05);IL-6、CD4^(+)T%分别与CD8^(+)T%呈负相关(P<0.05)。二元logistic回归分析显示,SAA、IL-6、CRP、CD3^(+)T%及CD4^(+)T%是类风湿性关节炎患者的危险因素,而CD8^(+)T%是该类患者保护因素(P<0.05)。结论类风湿性关节炎患者SAA、IL-6、CRP是类风湿性关节炎患者的危险因素,T淋巴细胞亚群免疫异常与该疾病发生发展密切相关,多项目联合检测对类风湿性关节炎临床诊疗及评估病情有重要价值。

血清淀粉样蛋白A、白细胞介素-6及T淋巴细胞亚群相关指标在系统性红斑狼疮活动期的表达水平分析

目的:分析血清淀粉样蛋白A(SAA)、白细胞介素-6(IL-6)及T淋巴细胞亚群相关指标在系统性红斑狼疮(SLE)活动期的表达水平。方法:选取2020年10月—2023年5月玉林市第一人民医院收治的SLE患者200例作为研究对象,根据SLE活动指数积分表评分分为SLE稳定期组与SLE活动期组,各100例,另选取同期于玉林市第一人民医院进行健康体检的健康人100例作为对照组。检测不同人群SAA、IL-6及T淋巴细胞亚群相关指标水平。结果:SLE稳定期组及SLE活动期组CD3%、CD8%、SAA、IL-6水平均高于对照组,SLE稳定期组SAA、IL-6水平低于SLE活动期组,SLE稳定期组CD4%高于对照组与SLE活动期组,差异有统计学意义(P<0.05)。SLE稳定期组及SLE活动期组CD3^(+)、CD4^(+)、CD8^(+)均小于对照组,且SLE活动期组CD3^(+)、CD4^(+)、CD8^(+)均小于SLE稳定期组,差异有统计学意义(P<0.05)。结论:SAA、IL-6及T淋巴细胞亚群相关指标在SLE患者中均有异常改变,SLE患者活动期T淋巴细胞亚群绝对计数低于稳定期患者,对于SLE的临床诊治具有一定参考价值。

外周血T淋巴细胞亚群、NK细胞、B细胞及IL-6在不同分期慢性肾脏病患者中的表达及临床意义

目的:探讨外周血T淋巴细胞亚群、自然杀伤细胞(NK细胞)、B细胞及白细胞介素-6(IL-6)在不同分期慢性肾脏病(chronic kidney disease,CKD)患者中的表达及临床意义。方法:选取盐城市中医院肾内科2022年10月—2023年6月收治的80例CKD 3~5期患者设为CKD组,另外选择同期21例健康体检者设为对照组,其中CKD组患者根据肾小球滤过率水平分为CKD 3期组、CKD 4期组、CKD 5期组。用流式细胞术检测外周血T淋巴细胞亚群(CD4^(+)T细胞、CD8^(+)T细胞)、NK细胞、B细胞,用酶联免疫吸附试验检测IL-6水平。比较以上指标在不同分期CKD患者中的表达,并采用Spearman相关性分析以上指标与CKD严重程度的相关性。结果:CKD 3期组、CKD 4期组、CKD 5期组CD4^(+)T细胞、CD8^(+)T细胞、NK细胞、B细胞均明显低于对照组,且CD4^(+)T细胞、CD8^(+)T细胞、NK细胞、B细胞随CKD严重程度加重逐渐降低,差异均有统计学意义(P<0.05);CKD 3期组、CKD 4期组、CKD 5期组IL-6水平明显高于对照组,且IL-6水平随CKD严重程度加重逐渐升高,差异均有统计学意义(P<0.05);IL-6水平与CKD分期呈负相关,CD4^(+)T细胞、CD8^(+)T细胞、NK细胞、B细胞与CKD分期呈正相关(P<0.05)。结论:随着CKD进展,患者的免疫功能受到显著影响,外周血T淋巴细胞亚群、NK细胞、B细胞及IL-6在评估CKD患者疾病进展中有重要临床意义。

胃癌根治术围术期血清IL-6、HBP、T淋巴亚群水平变化及预测院内感染的价值分析

背景胃癌根治术是治疗胃癌患者的主要手术,但是存在术后感染的风险,感染一旦发生,发展迅速,严重影响患者术后的身体恢复,甚至危及生命.对感染的早发现是治疗的关键.目的分析胃癌根治术围术期血清白细胞介素(interleukin,IL)-6、肝素结合蛋白(heparin-binding protein,HBP)、T淋巴亚群水平变化及预测院内感染的价值,为临床胃癌诊疗提供有利参考.方法选取2020-01/2023-10于我院行胃癌根治术治疗,术后发生院内感染的57例胃癌患者作为感染组,另选同期未发生院内感染的63例患者作为未感染组.比较两组血清IL-6、HBP、T淋巴亚群,包括分化簇3^(+)(cluster of differentation 3^(+),CD3^(+))、分化簇4^(+)(cluster of differentation 4^(+),CD4^(+))、CD4^(+)/CD8^(+)水平,并分析手术前后各指标变化值与院内感染病情程度的相关性、预测胃癌根治术后发生院内感染的价值.结果感染组术后外周血白细胞(white blood cell,WBC)、血清降钙素原(procalcitonin,PCT)、IL-6、HBP水平高于未感染组,CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)水平低于未感染组,且感染组△WBC、△PCT、△IL-6、△HBP、△CD3^(+)、△CD4^(+)、△CD4^(+)/CD8^(+)均大于未感染组(均为P<0.05);重度感染患者△IL-6、△HBP、△CD3^(+)、△CD4^(+)、△CD4^(+)/CD8^(+)均大于轻度感染患者(P<0.05);感染组△IL-6、△HBP、△CD3^(+)、△CD4^(+)、△CD4^(+)/CD8^(+)均与院内感染病情程度呈正相关(P<0.05);△WBC、△PCT、△IL-6、△HBP、△CD3^(+)、△CD4^(+)、△CD4^(+)/CD8^(+)预测胃癌患者胃癌根治术后发生院内感染的受试者工作特征曲线和曲线下面积分别为0.792、0.769、0.810、0.762、0.748、0.772、0.820,△IL-6、△HBP、△CD3^(+)、△CD4^(+)、△CD4^(+)/CD8^(+)预测院内感染的AUC与△WBC、△PCT比较,差异无统计学意义;与各指标单独预测比较,联合预测的AUC明显增大,NRI、IDI均>0(P<0.05).结论胃癌根治术围术期血清IL-6、HBP、T淋巴亚群水平变化与患者院内感染的发生及感染程度密切相关,IL-6、HBP、CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)动态变化联合预测院内感染具有较高价值.

瑞芬太尼复合麻醉对腹腔镜下胆囊切除患者血清IL⁃6、IL⁃2及T淋巴细胞亚群的影响

目的探讨瑞芬太尼复合麻醉对腹腔镜下胆囊切除(LC)患者血清IL⁃6、IL⁃2及T淋巴细胞亚群的影响。方法选取无为市人民医院2019年10月至2023年7月收治的122例行LC治疗患者为研究对象,根据麻醉药物不同分为对照组(n=59,七氟烷+丙泊酚复合麻醉)和观察组(n=63,瑞芬太尼+丙泊酚复合麻醉)。比较两组麻醉恢复情况、血清IL⁃6、IL⁃2水平、T淋巴细胞亚群变化及不良反应。结果观察组术后苏醒时间、自主呼吸恢复时间和导管拔除时间均短于对照组,差异具有统计学意义(P<0.05);两组T0时IL⁃6、IL⁃2水平比较,差异无统计学意义(P>0.05);T_(1)(术后6小时)、T_(2)(术后12小时)、T_(3)(术后24小时)时,观察组IL⁃6水平低于对照组,IL⁃2水平高于对照组,差异有统计学意义(P<0.05);两组T0时CD_(3)^(+)、CD_(4)^(+)、CD_(8)^(+)、CD_(4)^(+)/CD_(8)^(+)比较,差异无统计学意义(P>0.05);在T_(1)、T_(2)、T_(3)时比较,观察组CD_(3)^(+)、CD_(4)^(+)、CD_(4)^(+)/CD_(8)^(+)高于对照组,CD_(8)^(+)高于对照组,差异有统计学意义(P<0.05);两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论与七氟烷复合麻醉比较,瑞芬太尼复合麻醉对LC患者血清IL⁃6、IL⁃2水平及免疫系统的影响较小,可加快术后患者清醒和麻醉恢复,安全性尚可。

PCT、IL-6和PA在新生儿细菌性感染中检测意义及与T淋巴细胞亚群水平关系

目的:探讨血清降钙素原(PCT)、白细胞介素6(IL-6)、前白蛋白(PA)在新生儿细菌感染性疾病(NBI)中的表达意义及与T淋巴细胞亚群水平。方法:回顾性收集2022年1月-2023年1月我院收治的150例NBI新生儿作为研究对象并纳入NBI组,另选取150例在我院进行正常体检的健康新生儿作为对照组,对比两组新生儿血清PCT、IL-6、PA及T淋巴细胞亚群水平;Pearson相关系数分析PCT、IL-6、PA与T淋巴细胞亚群水平的相关性;绘制受试者操作特征曲线(ROC)分析PCT、IL-6、PA单一及联合检测在新生儿NBI中的检测意义。结果:相比于对照组,NBI组新生儿血清PCT、IL-6、CD3+、CD4+表达显著上升,而PA、CD8+水平显著下降(均P<0.05);Pearson相关系数分析显示PCT、IL-6均与CD3+、CD4+呈显著正相关关系,但与CD8+呈负相关(均P<0.05);而PA则与CD3+、CD4+呈显著负相关,但与CD8+呈正相关(均P<0.05);ROC分析显示PCT、IL-6、PA联合检测的曲线下面积(AUC)显著高于任意指标单独检测(均P<0.05),敏感度为86.00%,特异度为86.67%。结论:PCT、IL-6、PA在NBI新生儿中均具有特异性表达,且与新生儿T淋巴细胞亚群水平之间具有较强关联性,临床通过联合检测PCT、IL-6、PA对NBI的发生发展具有良好的诊断价值,值得临床推广使用。

COPD患者痰液CCR6、CD83、Th1、Th2表达及临床意义

目的:探究CC趋化因子受体6(CCR6)、CD83及辅助性T细胞(Th)1、Th2相关细胞因子在慢性阻塞性肺疾病(COPD)患者痰液中的表达及临床意义。方法:选取2020年8月—2022年11月某院接受治疗的265例COPD患者,根据疾病严重程度将135例急性发作期COPD患者纳入AECOPD组,130例稳定期COPD患者纳入COPD稳定期组,选取同期该院健康体检者100例作为正常对照组。采用流式细胞术和酶联免疫吸附试验(ELISA)法检测各组痰液样本中CD83、CCR6及Th1[干扰素-γ(IFN-γ)、肿瘤坏死因子-α(TNF-α)]、Th2[白细胞介素(IL)-4、IL-6]相关细胞因子表达水平,并分析COPD稳定期组上述因子表达水平与慢性阻塞性肺疾病全球倡议(GOLD)肺功能分级、COPD评估测试(CAT)评分及改良版英国医学研究委员会呼吸问卷(mMRC)分级的关系。结果:AECOPD组患者痰液中CD83/CCR6比值(0.73±0.40)低于COPD稳定期组(1.40±0.53)和正常对照组(2.85±1.86),而IFN-γ[(43.45±14.80)pg/mL]、TNF-α[(59.55±21.48)pg/mL]、IL-4[(16.30±4.62)pg/mL]、IL-6[(38.97±13.41)pg/mL]水平高于COPD稳定期组[(32.53±8.45)pg/mL]、(30.27±13.18)pg/mL、(10.32±4.54)pg/mL、(19.64±7.16)pg/mL]和正常对照组[(25.22±6.31)pg/mL、(20.42±7.61)pg/mL、(5.38±1.14)pg/mL、(8.40±2.27)pg/mL]差异均有统计学意义(P<0.05)。随着稳定期COPD患者GOLD肺功能分级和CAT评分增加,痰液中CD83/CCR6比值逐渐降低,而IFN-γ、TNF-α、IL-4、IL-6水平逐渐升高,差异均有统计学意义(P<0.05)。mMRC分级≥2级组患者痰液中CD83/CCR6比值(1.11±0.34)低于mMRC分级<2级组(1.53±0.55),IFN-γ[(37.04±9.55)pg/mL]、TNF-α[(36.85±12.10)pg/mL]、IL-4[(12.33±4.65)pg/mL]、IL-6[(21.57±7.80)pg/mL]水平高于mMRC分级<2级组[(30.66±7.21)pg/mL、(27.55±12.70)pg/mL、(9.49±4.25)pg/mL、(18.84±6.76)pg/mL],差异有统计学意义(P<0.05)。结论:COPD患者痰CD83/CCR6比值降低,Th1和Th2相关细胞因子水平升高,且与COPD患者肺功能状态、CAT评分及mMRC分级有关,可作为临床评估COPD患者病情程度的参考指标。

HIV机会性感染患者外周血IL-6、CD4^(+)T淋巴细胞水平变化及意义

目的探讨人免疫缺陷病毒(HIV)机会性感染患者外周血白细胞介素6(IL-6)及CD4^(+)T淋巴细胞水平变化及意义。方法将浙江大学医学院附属杭州市西溪医院2020年8月至2021年6月收治的134例HIV患者按照入院当天机会性感染情况分为感染组(n=58)和非感染组(n=76),比较两组患者IL-6及CD4^(+)T淋巴细胞水平。根据预后情况分为预后良好组和预后不良组,评估IL-6及CD4^(+)T在患者预后中的价值。结果感染组患者IL-6水平高于非感染组,CD4^(+)T水平低于非感染组(均P<0.05);CD4^(+)T水平越低,机会性感染病原体种类越多(P<0.05)。预后不良组患者IL-6水平高于预后良好组,CD4^(+)T水平低于预后良好组(P<0.05);IL-6、CD4^(+)T预测HIV机会性感染不良预后敏感度、特异度均较高。结论IL-6水平升高及CD4^(+)T水平降低是HIV机会性感染发生的高危因素,二者可用于预测HIV抗病毒治疗的早期预后。

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.

Autoimmune pancreatitis characterized by predominant CD8+ Tlymphocyte infiltration

Autoimmune pancreatitis(AIP)is a rare form of pan-creatitis characterized by prominent lymphocyte inf iltration and pancreatic f ibrosis resulting in organ dysfunc-tion.The pathogenesis and pathology of AIP remain unknown.A 64-year-old Chinese man presented with symptoms and signs of bile duct obstruction diffuse enlargement of the head of pancreas,elevated IgG levels,and negative autoimmune antibody responses.A pylorus-preserving pancreatoduodenectomy was per-formed and a pancreatic tumor was suspected.Howev-er,periductal lymphoplasmacytic inf iltration and f ibrosis were found in the head of pancreas and nearby organs instead of tumor cells.Four months after surgery,the patient was readmitted because of reoccurrence ofsevere jaundice and sustained abdominal distension.Prednisone 30 mg/d was administered orally as an AIP was suspected.One and a half months later,the symp-toms of the patient disappeared,and globulin,amino-transferase and bilirubin levels decreased signif icantly.Over a 9-mo follow-up period,the dose of prednisone was gradually decreased to 10 mg/d and the patient remained in good condition.We further demonstrated dominant CD3+/CD8+ populations,CD20+ cells and a few CD4+ cells in the pancreatic parenchyma,duo-denum and gallbladder wall by immunohistochemical assay.This AIP case presented with signif icant CD8+ T lymphocyte inf iltration in the pancreas and extra-pan-creatic lesions,indicating that this cell population may be more important in mediating AIP pathogenesis than previously known and that AIP might be a poorly defined autoimmune disease with heterogeneous pathogenesis.

Role of CD80 in stimulating T lymphocyte activation

AIM： To observe biological characteristics of hepatocarcinoma cells before and after CD80 transfection and to compare the effect of CD80-transfected hepatocarcinoma cells on T lymphocyte activation. METHODS： Retro virus vector carrying CD80 gene was transfected into HepG2 cells to establish CD80transfected hepatocarcinoma cells （HepG2/hCD80）. Flow cytometry （FCM） was performed to detect CD80 expression in the transfected cells. RT-PCR was used to evaluate CD80 expression at mRNA level. In the presence of anti-CD3 mAb, the proliferation of T lymphocyte was observed by M＇n＇. Meanwhile, the expression of activated molecule marker CD25 was analyzed through FCM. RESULTS： A stable cell line HepG2/hCD80 expressing the human CD80 was established. Growth curve showed that the molecule CD80 could obviously decrease the growth of tumor cells. HepG2/hCD80 was evidenced to have a potency to enhance T cell proliferation and upregulate CD25 expression. CONCLUSION： CD80 transfection can lower malignant phenotype of hepatocarcinoma cells. CD80 transfection has a down-regulatory effect to activated T cells in vitro.

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.

Effect of Mg^(2+)level on the functions of CD8^(+)T lymphocytes and NK cells in patients with COVID-19

Objective:To investigate the changes of Mg^(2+) levels in serum and peripheral blood mononuclear cells(PBMCs)of patients with COVID-19 and its effects on the functions of CD8^(+)T lymphocytes and NK cells.Methods:A total of 165 COVID-19 patients hospitalized in Ezhou Central Hospital from January 20 to February 20,2020 were divided into mild/common group(98 cases)and severe/critical group(67 cases).At the same time,34 healthy persons were selected as the control group.Peripheral blood was collected and PBMCs were isolated,the level of Mg^(2+) in serum and PBMCs was detected.The subsets of CD8^(+)T lymphocytes and NK cell and the expression levels of their surface inhibitory molecular PD-1 and activator molecular NKG2D were detected by flow cytometry.The correlation between Mg^(2+) concentration and the expression levels of PD-1 and NKG2D was also analyzed.Results:Compared with the control group,the concentration of Mg^(2+) in serum and PBMCs,the counts of CD8^(+)T lymphocytes and NK cell in patients with mild/common and severe/critical groups were significantly reduced(P<0.05),while the expression level of surface inhibitory molecular PD-1 were significantly increased(P<0.05),while the expression level of the activation molecule NKG2D were significantly decreased(P<0.05).However,the changes of the above indicators in patients with severe/critical group were greater than those in the mild/common group(P<0.05).In addition,the Mg^(2+) concentration in COVID-19 patients was negatively correlated with the expression level of PD-1 on CD8^(+)T lymphocytes and NK cells(P<0.05),and positively correlated with the expression levels of NKG2D(P<0.05).Conclusion:The concentration of Mg^(2+) in the serum and PBMCs of COVID-19 patients is significantly reduced,which may cause the function of CD8^(+)T lymphocytes and NK cells to be inhibited.