1,25二羟维生素D3和塞莱昔布增强阿霉素对乳腺癌细胞株MCF/ADR的作用与NF-κB的关系

目的 研究1,25 二羟维生素D3(1,25-D)和塞莱昔布(CELE)影响阿霉素(ADM)对MCF/ADR细胞的作用与NF-κB的关系.方法 采用四唑氮蓝比色(MTT)法检测ADM的半数药物抑制浓度(IC50);采用流式细胞技术分析1,25-D和CELE对MCF/ADR细胞凋亡、细胞内ADM累积、P170表达的影响;...     

急性白血病患者GSTπ、TopoⅡα和p170表达及临床意义

目的　探讨急性白血病 (AL)患者谷胱甘肽 S 转移酶π(GSTπ) ,DNA拓扑异构酶Ⅱα(TopoⅡα)及P糖蛋白(p170 )的表达及临床意义。方法　采用免疫组化S P法检测 94例AL患者白血病细胞中GSTπ、TopoⅡα和p170表达的阳性率。结果　GSTπ、TopoⅡα和 p170在ANLL中的初治组 (A组 )及复发或难治组 (B组 )中的阳性率分别为2 2 0 %、43 2 %、2 2 0 %及 5 0 0 %、5 0 0 %、46 7% ;三者在ALLA组及B组的阳性率分别为 4 3%、0、18 2 %及30 0 %、18 2 %、30 0 %。GSTл阳性、TopoⅡα阴性、p170阳性AL患者完全缓解率 (CR)与GSTπ阴性、TopoⅡα阳性、p170阴性的CR率分别为 2 5 0 %、75 0 %、38 5 %及81 8%、37 5 %、84 2 %。除TopoⅡα外 ,耐药因子阳性患者的CR率低于阴性患者 (P <0 0 1及 0 0 5 )。相关分析显示GSTπ与p170之间密切正相关 (r =0 6 4,P <0 0 1)。结论　GSTπ、p170过度表达与AL患者的化疗疗效及预后密切相关 ,且GSTπ与 p170过度表达密切正相关。     

癌痛对抑郁及免疫功能的影响

目的:分析癌痛与抑郁和免疫功能之间的相关性。方法:收集我科室从2013年1月至2016年12月收治的73例晚期肿瘤患者,37例癌痛组,36例无癌痛组,进行数字疼痛强度量表(NRS)、抑郁自评量表(SDS)、生活质量、免疫功能等的调查分析比较。结果:癌痛与无癌痛的两组患者抑郁的发生比较有统计学意义(P＜0.05),癌痛程度与抑郁程度有相关性(P＜0.05);癌痛与无癌痛的两组患者生活质量的比较差异有统计学意义(P＜0.05)。癌痛与无癌痛的两组患者CD3+、CD4+、CD8+比较差异无明显统计学意义(P＞0．05)。结论:抑郁的发生与癌痛相关,抑郁程度和癌痛程度也有极大关联。癌痛可明显影响患者生活质量,但对免疫功能影响不明显。     

过表达糖原合成酶1对非小细胞肺癌细胞增殖能力的影响

目的 探讨糖原合成酶（GYS1）对非小细胞肺癌细胞增殖能力的影响。方法 采用实时荧光定量PCR（qRT-PCR）检测正常人支气管上皮样细胞系HBE细胞和非小细胞肺癌细胞系NCI-H661、NCI-H1299中GYS1 mRNA相对表达量。过表达NCI-H1299细胞的GYS1,构建GYS1过表达细胞模型,采用MTT增殖实验、EdU增殖实验评估细胞的增殖能力,应用平板克隆形成实验评估细胞的克隆形成能力。结果 人非小细胞肺癌细胞NCI-H661、NCI-H1299中GYS1 mRNA的表达水平高于人正常支气管上皮样细胞HBE的表达水平（P均< 0.001）。NCI-H1299-GYS1过表达细胞的GYS1 mRNA和蛋白相对表达量均上调（P均< 0.001）。过表达GYS1促进了NCI-H1299细胞的增殖和克隆形成（P均< 0.001）。结论 GYS1在非小细胞肺癌中高表达,过表达GYS1促进了非小细胞肺癌细胞的增殖。     

公立医院人才可持续发展满意度对管理人员服务绩效的作用机制研究

目的 分析公立医院人才可持续发展满意度影响管理人员服务绩效的条件组态,并探求其影响机制。方法 选取北京市18家三级公立医院617名管理人员进行问卷调查,使用fsQCA 3.0软件进行模糊集定性比较分析。结果 影响公立医院管理人员服务绩效的条件组态分为晋升主导型、管理主导型和综合型三种路径。结论 建议完善晋升管理机制,建立“相对衡量”的绩效评价体系;落实公立医院改革,提高人才可持续发展满意度;引导要素合理配置,推动服务绩效全面提升。     

联合检测血清PCT、IL-6、CRP、AMY 及LPS对急性胰腺炎的诊断价值

目的 通过检测急性胰腺炎（AP）患者外周血清降钙素原（PCT）、白细胞介素6（IL-6）、C反应蛋白（CRP）、淀粉酶（AMY）和脂肪酶（LPS）的水平,分析这5种血清指标联合检测在AP临床诊断中的价值。 方法 选取2015年1月～2017年1月在成都上锦南府医院确诊为急性胰腺炎患者117例为观察组,其中重症急性胰腺炎患者（SAP）62例,轻症急性胰腺炎患者（MAP）55例。另选取同期体检健康者110例为对照组。检测SAP者、MAP者和对照组血清中PCT、IL-6、CRP、AMY和LPS的浓度,并比较水平差异。 结果 SAP者及MAP者的PCT、IL-6、CRP、AMY和LPS水平均显著高于对照组（均P＜0.05）。SAP者的PCT、IL-6、CRP水平均高于MAP者（P＜0.05）,而AMY、LPS水平比较,差异无统计学意义（P＞0.05）。PCT、IL-6、CRP、AMY和LPS的ROC曲线面积分为0.72、0.87、0.84、0.88、0.86,灵敏度分别为为60.40%、71.80%、67.50%、70.90%、78.60%,特异度分别为82.70%、86.40%、90.90%、88.20%、85.50%。多种血清指标联合检测对AP诊断的曲线面积为0.97,灵敏度为86.80%,特异度为99.10%。 结论 血清PCT、IL-6、CRP、AMY及LPS指标联合检测对AP的诊断具有较高的敏感性和特异性,可有效提升AP患者的临床诊断准确率,可在临床推广、应用。     

老年原发免疫性血小板减少症患者治疗前后T淋巴细胞亚群的临床研究

目的：检测老年原发免疫性血小板减少症( ITP)患者治疗前后T淋巴细胞亚群的动态变化,探讨其在ITP发生发展中的作用。方法采用流式细胞术测定ITP患者治疗前后及正常对照组外周血T淋巴细胞亚群的水平。结果 ITP患者治疗前后T淋巴细胞绝对值、CD3+、CD4+、CD8+、CD4+CD25+T淋巴细胞比例及CD4+/CD8+比值分别为(0．83±0．16)vs(1．74±0．36)、(71．71±1．07)% vs(72．69±1．35)%、(41．78±0．71)% vs(42．46±1．20)%、(29．67±0．97)% vs(28．56±1．75)%、(8．76±0．56)% vs(9．39±1．26)%、(1．42±0．07)vs(1．49±0．13),CD8+T淋巴细胞比例治疗后显著降低,其余均显著升高,差异有统计学意义(P<0．05)。结论 T淋巴细胞亚群的异常改变,破坏自身免疫,与病情相关,可指导临床治疗,并作为评估预后的参考指标。     

Ataxia telangiectasia mutated kinase inhibition promotes irradiation-induced PD-L1 expression in tumour-associated macrophages through IFN-I/JAK signalling pathway

Tumour-associated macrophages (TAMs) are one of the primary sources of PD-L1 expression in the tumour microenvironment (TME). Ionizing radiation (IR) promotes PD-L1 expression in tumour cells. However, the effect of IR on macrophage PD-L1 expression and the underlying mechanisms remain unclear. ATM kinase, as the key kinase for initiating DNA damage repair (DDR) process, is associated with innate immune STING axis activation. Here, we explored the molecular mechanism implicated in macrophage PD-L1 expression regulated by IR as well as the role of ATM kinase in this process. IR-regulated PD-L1 expression in macrophages and associated signalling pathways were explored by in vitro studies using murine and human macrophage cell lines. A colorectal xenograft murine model was employed to demonstrate the impact of targeting ATM and PD-L1 expression in TAMs following IR on growth of tumour in vivo. IR up-regulated PD-L1 expression in macrophages, which was further augmented by ATM kinase inhibition. ATM inhibition increased IR-induced DNA damage, which activated STING/interferon regulatory factor 3 (IRF3) signalling pathway and up-regulated type I interferon (IFN-I) expression in macrophages. IFN-I bound to the IFN α receptor 1 on macrophages, activated the downstream JAK1 and STAT1/3 signalling and eventually led to PD-L1 up-expression. ATM inhibition augmented IR-induced PD-L1 expression in macrophages and CD8⁺ T cell infiltration, and promoted anti-tumour efficacy in vivo. These results suggested that ATM inhibition promoted IR-induced PD-L1 expression through the activation of innate immunity in TAMs, which provided a novel approach to enhance the anti-tumour efficacy of RT.     

Study of the Immediate Effects of Autostereoscopic 3D Visual Training on the Accommodative Functions of Myopes

PurposeStereoscopic viewing has an impact on ocular dynamics, but its effects on accommodative functions are not fully understood, especially for autostereoscopic viewing. This study aimed to investigate the changes in dynamic accommodative response, accommodative amplitude, and accommodative facility of myopes after autostereoscopic visual training.MethodsWe enrolled 46 adults (men = 22 and women = 24; age = 21.5 ± 2.5 [range = 18–25] years, spherical equivalent: −4.52 ± 1.89 [−8.88 to −1.75] diopters [D]) who visited the Eye & ENT Hospital of Fudan University. The study population was randomly divided into three-dimensional (3D) and two-dimensional (2D) viewing groups to watch an 11-minute training video displayed in 3D or 2D mode. Dynamic accommodative response, accommodative facility, and accommodative amplitude were measured before, during, and immediately after the training. Accommodative lag and the variability of accommodation were also analyzed. Visual fatigue was evaluated subjectively using a questionnaire.ResultsAccommodative lag decreased from 0.54 ± 0.29 D to 0.42 ± 0.32 D (P = 0.004), whereas accommodative facility increased from 10.83 ± 4.55 cycles per minute (cpm) to 13.15 ± 5.25 cpm (P < 0.001) in the 3D group. In the 2D group, there was no significant change in the accommodative lag (P = 0.163) or facility (P = 0.975), but a decrease in accommodative amplitude was observed (from 13.88 ± 3.17 D to 12.71 ± 2.23 D, P = 0.013). In the 3D group, the accommodative response changed with the simulated target distance. Visual fatigue was relatively mild in both groups.ConclusionsThe immediate impact of autostereoscopic training included a decrease in the accommodative lag and an increase in the accommodative facility. However, the long-term effects of autostereoscopic training require further exploration.