简介：无

简介：

简介：

简介：目的探讨非小细胞肺癌（NSCLC）组织中醛酮还原酶1C3（AKRlC3）表达及其临床意义。方法收集2013年1月至2016年3月88例手术切除的NSCLC组织及83例癌旁正常组织，采用实时荧光定量PCR（QPCR）法检测上述组织中的AKRlC3表达水平，分析AKRlC3表达与NSCLC临床病理参数（性别、年龄、TNM分期、肿瘤大小、组织学类型及淋巴结转移）的关系；根据随访资料分析AKRlC3表达与预后的关系，采用受试者工作特征曲线（ROC）评价AKRlC3表达在NSCLC早期诊断中的效能。结果NSCLC组AKRlC3表达水平为0．187±0．175，低于癌旁正常组织的1．079±0．384，差异有统计学意义（P〈0．05）；AKRlC3诊断NSCLC的曲线下面积为0．982（95％CI：0．966～0．998）。AKRlC3表达与NSCLC性别、年龄、组织学类型及淋巴结转移无关，与肿瘤大小及TNM分期有关。肿瘤大小〉3em的AKRlC3表达量为0．095＋0．055，低于肿瘤大小≤3em的0．340±0．201，而Ⅲ、Ⅳ期的AKRlC3表达量为0．094±0．058，低于I、Ⅱ期的0．265±0．202，差异有统计学意义（P〈0．05）。全组NSCLC患者的中位总生存期（OS）为17．60个月。AKRlC3高表达者的中位0s为20．60个月，高于低表达者的11．90个月，差异有统计学意义（P〈0．05）；I＋Ⅱ期患者的中位OS为21．65个月，高于Ⅲ＋Ⅳ期的16．20个月，差异有统计学意义（P〈0．05）；肿瘤大小≤3em者的中位OS为18．40个月，高于〉3em者的15．70个月，差异有统计学意义（P〈0．05）。结论AKRlC3在NSCLC组织中表达降低，且与TNM分期、肿瘤大小及预后有关，可能与NSCLC发生发展有关，在NSCLC诊断及病情评估有一定价值。

简介：

简介：AmethodconstructinqC~1Piecewisequinticpolynomialoveratriangulargridtointerpo-latefunctionvaluesandpartialderivativesatverticesispresentedinthispaper.Thesetofprecisepoly-nomialsofthismethodisdiscussed.

简介：

简介：

简介：文章亮点▲真实细腻的生活情景,把外公外婆的爱情表现得温婉动人。亮家里客厅的墙面上,挂着我家的全家福,坐在最中间的是我的外公、外婆。如果仔细观

简介：【教学内容及教材分析】1．教学内容：人教新课标八年级下册Unit7SectionA（1a-1c）。2．教材分析：本单元通过“学会提出请求”及“学会表达歉意”这两个话题，设计了相关的语言情景。

简介：摘要：桐梓县吉源煤矿位于黔北岩溶发育地区，主要开拓系统均布置在煤系地层底板茅口灰岩中，从井下揭露的大量岩溶出水点的涌出特征分析，茅口灰岩多以管道流形式出现，茅口灰岩地下水类型属潜水型而不是承压水类型。而C1煤层上覆长兴灰岩含水层，富水性中等。但是由于C1煤层距上部距长兴灰岩真厚约为75m，根据开采导水裂隙带计算，C1煤层开采后未波及顶板长兴灰岩。故吉源煤矿开采+620m标高以上的C1煤层无顶、底板岩溶突水威胁。

简介：AbstractBackground:Macrophages play an important role in renal ischemia reperfusion injury, but the functional changes of macrophages under hypoxia/reoxygenation and the related mechanism are unclear and need to be further clarified.Methods:The effects of hypoxia/reoxygenation on functional characteristics of RAW264.7 macrophages were analyzed through the protein expression detection of pro-inflammatory factors TNF-α and CD80, anti-inflammatory factors ARG-1 and CD206. The functional implications of C-X3-C motif chemokine receptor 1(CX3CR1) down-regulation in hypoxic macrophages were explored using small interfering RNA technology. Significance was assessed by the parametric t-test or nonparametric Mann-Whitney test for two group comparisons, and a one-way ANOVA or the Kruskal-Wallis test for multiple group comparisons.Results:Hypoxia/reoxygenation significantly increased the protein expression of M1-related pro-inflammatory factors TNF-α, CD80 and chemokine C-X3-C motif chemokine ligand 1 (CX3CL1)/CX3CR1 and inhibited the protein expression of M2-related anti-inflammatory factors ARG-1 and CD206 in a time-dependent manner in RAW264.7 cells. However, the silencing of CX3CR1 in RAW264.7 cells using specific CX3CR1-siRNA, significantly attenuated the increase in protein expression of TNF-α (P < 0.05) and CD80 (P < 0.01) and the inhibition of ARG-1 (P < 0.01) and CD206 (P < 0.01) induced by hypoxia/reoxygenation. In addition, we also found that hypoxia/reoxygenation could significantly enhance the migration (2.2-fold, P < 0.01) and adhesion capacity (1.5-fold, P < 0.01) of RAW264.7 macrophages compared with the control group, and CX3CR1-siRNA had an inhibitory role (40% and 20% reduction, respectively). For elucidating the mechanism, we showed that the phosphorylation levels of ERK (P < 0.01) and the p65 subunit of NF-κB (P < 0.01) of the RAW264.7 cells in the hypoxic/reoxygenation group were significantly increased, which could be attenuated by down-regulation of CX3CR1 expression (P < 0.01, both). ERK inhibitors also significantly blocked the effects of hypoxic/reoxygenation on the protein expression of M1-related pro-inflammatory factors TNF-α, CD80 and M2-related anti-inflammatory factors ARG-1 and CD206. Moreover, we found that conditioned medium from polarized M1 macrophages induced by hypoxia/reoxygenation, notably increased the degree of apoptosis of hypoxia/reoxygenation-induced TCMK-1 cells, and promoted the protein expression of pro-apoptotic proteins bax (P < 0.01) and cleaved-caspase 3 (P < 0.01) and inhibited the expression of anti-apoptotic protein bcl-2 (P < 0.01), but silencing CX3CR1 in macrophages had a protective role. Finally, we also found that the secretion of soluble CX3CL1 in RAW264.7 macrophages under hypoxia/reoxygenation was significantly increased.Conclusions:The findings suggest that hypoxia/reoxygenation could promote M1 polarization, cell migration, and adhesion of macrophages, and that polarized macrophages induce further apoptosis of hypoxic renal tubular epithelial cells by regulating of CX3CL1/CX3CR1 signaling pathway.

简介：ThispapershowsthattheC1-curvedfiniteelementdevelopedbyBernadoningeneralcannotsatisfytheessentialboundaryconditionsonapproximateboundary.Furthermore,amodifiedC1-curvedfiniteelementisgiven,whichiscompatiblewiththeelementofArgyristriangleandcansatisfythehomogeneousDirichletboundaryconditionsonapproximateboundary.

简介：

简介：用（C，1）求和法来研究Fourier级数的可和性，即用三角多项式任意的一致逼近一周期为2π的局部可积函数．

简介：A.simplicialmesh(triangulation)isconstructedthatgeneralizesthetwo-dimensional4-directionmeshtoR~m.Thismesh,withsymmetric,shift-invariantvaluesatthevertices,isshowntoadmitaboundedC~1interpolantifandonlyifthealternatingsumofthevaluesattheverticesofany1-cubeiszero.Thisim-pliesthaiinterpolationattheverticesofanm-dimensional,simplicialmeshbyaC~1piecewisepolynomialofdegreem+1withonepiecepersimplexisunstable.

简介：无

简介：  摘要：厂子弟校转型高完中学校，C1学生考上本科甚至重本的案例探究发现：老师的经验起着重要作用；针对学生方法恰当，老师们集体经验助力；让学生品行发光；自信心让学生飞得更高更快；榜样的力量。

简介：

简介：摘要目的初探BCAR1、PDE1C、OPRD1以及NRXN1基因启动子区甲基化水平的改变与原发性痛风及高尿酸血症的相关性。方法在中国科学院大学宁波华美医院门诊及体检中心同期随机选取原发性痛风患者50例、高尿酸血症患者30例和健康对照体检者50名，提取脱氧核糖核酸（DNA），经甲基化转化后对3组受试者BCAR1、PDE1C、NRXN1以及OPRD1 4个基因启动子区的目标序列进行焦磷酸测序，得到其甲基化率。采用方差分析和非参数检验对3组病例的4种基因启动子区甲基化率进行统计学分析。结果受试者工作特征曲线（ROC曲线）分析提示PDE1C（pos4、pos5、pos6）的甲基化水平对诊断痛风有较高的准确性，ROC曲线下面积（AUC）为0.712、0.772、0.775，P均<0.05；OPRD1 pos4的甲基化水平对诊断高尿酸血症有较高的准确性（AUC=0.733，P<0.05）。结论DNA甲基化可能与痛风及高尿酸血症的发病和炎症反应具有一定的相关性，但仍需进一步研究。