简介:目的总结老年瓣膜病外科治疗结果.方法回顾性分析123例诊断为瓣膜病,并行瓣膜置换手术的老年患者的临床资料,分析其疗效、并发症及影响手术早期死亡率的相关因素.结果二尖瓣置换66例,主动脉瓣置换39例,二尖瓣+主动脉瓣置换15例,三尖瓣置换2例,Betall's术+二尖瓣置换1例,同期行其他手术共105例.早期死亡率8.9%(11/123),并发症出现率41.7%(50/123),晚期死亡3例,其中与心脏有关死亡1例,死于反复心力衰竭.随访6个月~14年,96例存活,失访13例,随访率88.1%(96/109).心源性恶液质、心胸比>0.7是影响手术早期死亡的高危因素.结论老年瓣膜病患者病因复杂,手术死亡率和并发症发生率均高.
简介:<正>闭合性腹内脏器损伤是创伤外科常见疾病,早期诊断和救治有一定困难。我院自1987年1月~1994年12月共收治并手术抢救闭合性腹内脏器损伤共123例,现将诊治体会叙述如下。临床资料本组男性105例,女性18例,年龄最小2岁,最大70岁,以青壮型男性居多占74%。腹内脏器损伤数151个,其中单个脏器伤97例,2个脏器伤24例,3个脏器伤2例。肝破裂40例次,脾破裂44例次,小肠破裂27例次,结肠破裂8例次,肠系膜破裂9例次,膈肌破裂3例次,胃破裂1例次,大网膜裂伤1例次,12指肠破裂2例次,肾损伤7例次,膀胱破裂4例次,膈膜后血肿5例次。致伤原因:车祸伤94例,坠落伤10例,跌伤6例,压伤及其它伤13例。含并伤17例,其中合并颅脑损伤6例,血氧脑2例,尿
简介:摘要:本文在落实公司安全生产各项工作部署,切实担负起做好安全生产工作的政治责任,夯实安全基础、落实主体责任的同时,积极探索安全与党建融合的方式方法,并以此为契机,求得创新机制,给同行业以好的经验和借鉴。
简介:摘要近年来免疫检查点抑制剂是癌症免疫治疗研究的一个重要里程碑。靶向程序性死亡受体1(PD-1)、程序性死亡受体-配体1(PD-L1)或细胞毒性T淋巴细胞相关抗原4(CTLA-4)的单克隆抗体在临床试验和临床应用中发挥着巨大的作用,并且当治疗有效时可产生持久的临床反应,已经成功获批应用于多种肿瘤的治疗。但是,因为其总体的应答率不高,仅使部分患者受益。因此,亟需探索新型的免疫检查点抑制剂,并且探究其作用机制进一步发展肿瘤免疫疗法。CD112R是免疫细胞表达的免疫球蛋白超家族受体,与肿瘤细胞表达的 Nectin-2/Necl 家族配体(CD112)相互结合,在肿瘤免疫治疗中具有很大的潜力,是新一代的抑制性免疫检查点。本文将对CD112-CD112R轴的分子结构与在肿瘤免疫反应中的作用进行阐述,探讨在癌症免疫治疗中的潜在应用。
简介:AbstractBackground:The mortality rate among patients with nasopharyngeal carcinoma (NPC) has improved significantly with the advent of chemoradiotherapy strategies. However, distant metastasis remains problematic. Tumor-specific reactivity in cancer patients has been detected exclusively in CD39+ T cells, particularly in CD39+CD103+ T cells. Circulating cancer-specific T cells are important for protecting against metastasis. This study aimed to evaluate the predictive value of circulating CD39+CD8+ T cells for metastasis in patients with NPC.Methods:We performed a cross-sectional, longitudinal study of 55 patients with newly diagnosed NPC of stage III-IVa. All patients were initially treated with standard combined chemoradiotherapy. Blood samples were obtained from 24 patients before and at 1 month and 6 months after treatment. T cell expression of CD39 and CD103, together with the markers of T cell exhaustion programmed death-1 (PD-1)/T cell immunoglobulin and mucin domain-containing protein 3 (Tim-3) and markers of cell differentiation CD27/CC-chemokine receptor 7/CD45RA, was examined by flow cytometry. The Wilcoxon rank-sum test analysis was used to analyze the differences between two groups. Kaplan-Meier analysis was used for analysis of progression-free survival (PFS).Results:The expression of circulating CD39+CD8+ and CD39+CD103+ CD8+ T cells was significantly higher in patients without distant metastasis (CD39+CD8+: 6.52% [1.24%, 12.58%] vs. 2.41% [0.58%, 5.31%], Z=-2.073, P=0.038 and CD39+CD103+ CD8+: 0.72% [0.26%, 2.05%] vs. 0.26% [0.12%, 0.64%], Z=-2.313, P = 0.021). Most CD39+ T cells did not express PD-1 or Tim-3. Patients with high expression of CD39+CD103+CD8+ T cells had better PFS than patients with low expression (log rank value = 4.854, P = 0.028). CD39+CD8+ T cells were significantly elevated at 1-month post-treatment (10.02% [0.98%, 17.42%] vs. 5.91% [0.61%, 10.23%], Z = -2.943, P = 0.003). The percentage of advanced differentiated CD8+ T cells also increased at 1-month post-treatment compared with pre-treatment (33.10% [21.60%, 43.05%] vs. 21.00% [11.65%, 43.00%], Z =-2.155, P = 0.031). There was a significant correlation between elevated CD39+CD8+ T cells and increased effector memory T cells (intermediate stage: r = 0.469, P = 0.031; advanced stage: r = 0.508, P = 0.019).Conclusions:CD39+CD8+ circulating T cells have preserved effector function, contributing to an improved prognosis and a reduced risk of metastasis among NPC patients. These cells may thus be a useful predictive marker for a better prognosis in patients with NPC.
简介:摘要目的探究CD44.CD24在乳腺癌中的表达情况及意义。方法收集2008年1月1日至2013年1月1日本院本科室收治的160例乳腺癌患者,作为对照组;20例单纯性乳腺小叶增生和20例单纯性乳腺小管增生患者,作为实验组。应用双染免疫组织化学方法检测其CD44和CD24的表达情况。通过对检测结果进行分析,探究CD44和CD24在乳腺癌中的表达情况及意义。结果对本次研究分析后,对照组单纯性乳腺小叶增生和单纯性乳腺小管增生患者,CD44、CD24细胞的阳性率分别为10.00%和15.00%、15.00%和20.00%,经χ2检验,P>0.05,差异无统计学意义;实验组乳腺癌患者CD44、CD24细胞的阳性率均>65.00%,经χ2检验,P<0.05,差异有统计学意义。结论CD44、CD24在乳腺癌中具有比较高的表达率,其较高的表达率与乳腺癌的发生有关。
简介:AIM:ToassesstheutilityofanautologousCD34+andCD133+stemcellsinfusionasapossibletherapeuticmodalityinpatientswithend-stageliverdiseases.METHODS:Onehundredandfortypatientswithendstageliverdiseaseswererandomizedintotwogroups.Group1,comprising90patients,receivedgranulocytecolonystimulatingfactorforfivedaysfollowedbyautologousCD34+andCD133+stemcellinfusionintheportalvein.Group2,comprising50patients,receivedregularlivertreatmentonlyandserveda...
简介:CD4^+CD25^+调节性T细胞是一类具有特殊免疫调节功能的T细胞亚群,它所介导的免疫抑制在移植免疫耐受的诱导和维持中起关键作用。本文对近年来CD4^+CD25^+调节性T细胞的作用机制及免疫耐受等方面的研究进行了综述。
简介:本研究通过检测大肠癌患者外周血CD4+、CD25+、CD127lo/-Treg的水平,Ⅳ期大肠癌患者外周血CD4+、CD25+、CD127lo/-Treg高于Ⅱ期大肠癌患者(P<,方法流式细胞术检测36例大肠癌患者及30例健康人外周血中CD4+、CD25+、CD127lo/-Treg的变化
简介:目的初步探讨CD4Cr细胞表达的腺苷CD39和CD73在过敏性哮喘患者外周血中的水平变化及与叉头蛋白3(FoxP3)、GATA结合蛋白3(GATA3)和维A酸相关孤儿受体(ROR)-γtmRNA相关性。方法:选择54例对屋尘螨过敏的慢性持续期哮喘患者[间歇状态和轻度持续哮喘组(间歇.轻度组)29例,中重度组25例]和45名健康志愿者.通过荧光实时定量PCR方法检测并比较研究对象外周血CD4+T细胞中CD39、CD73、FoxP3、GATA3和ROR-γtmRNA水平。结果:CD39mRNA水平正常对照组明显高于间歇-轻度组(P=0.000),间歇.轻度组明显高于中重度组(P=0.001)。CD73mRNA水平正常对照组明显高于间歇-轻度组(P=0.001),哮喘亚组间差异无统计学意义(P=0.126)。哮喘组CD4+T细胞表达的CD39mRNA与FoxP3mRNA水平呈显著正相关性(r=0.607。P=0.000),与GATA3mRNA水平呈显著负相关性(r=-0.505,P=-0.000),与ROR-γtmRNA无显著相关性(r=-0.287,P=0.054)。哮喘组CD4+T细胞表达的CD73mRNA与FoxP3和ROR-γtmRNA水平无显著相关性(r=0.110,P=0.450;r=-0.227,P=0.138),与GATA3mRNA水平呈显著负相关性(r=-0.286,P=-0.040)。结论:CD4+T细胞表达的CD39和CD73在过敏性哮喘免疫反应过程中起到重要作用。