人食管鳞癌及正常食管组织中Notch1基因的mRNA及蛋白的表达

采用RT-PCR方法,分别从人食管鳞癌及正常食管组织中扩增 Notch1基因,结果表明Notch1基因在人食管鳞癌及正常食管组织中均有表达.此外,通过免疫组织化学方法检测不同病理特征的35例食管鳞癌、16例原位癌及35例癌周正常食管粘膜上皮组织Notch1蛋白表达的变化,结果显示:Notch1蛋白在正常食管粘膜上皮组织和原位癌中的阳性率分别为82.9%、68.7%,二者无显著性差异(P＞0.05),但均显著高于食管鳞癌组织37.1%(P＜0.05),食管鳞癌Notch1蛋白的低表达与肿瘤的直径、分期和发生部位无关(P＞0.05),但与淋巴结转移有关(P＜0.05).这表明在正常食管粘膜上皮组织中Notch1蛋白高表达,而在食管癌鳞中Notch1蛋白呈现低表达或不表达.该研究为进一步探明Notch1基因的表达对食管癌细胞的发生、发展的影响奠定了良好的基础.     

ENO1在食管鳞癌中的差异表达及对食管鳞癌细胞增殖凋亡的影响

目的为检测α-烯醇化酶(ENO1)在不同食管病变进展中的表达,探讨其与食管鳞状细胞癌(鳞癌)患者临床病理特征及预后的关系,并检测ENO1对食管鳞癌生物学行为的影响。方法采用免疫组织化学的方法检测50例食管癌旁正常组织,20例食管低级别上皮内瘤变(LGIN),20例高级别上皮内瘤变(HGIN),50例食管鳞癌组织(ESCC)中ENO1的表达,结合食管鳞癌患者临床病理资料分析其表达与临床病理特征及预后的关系。用ENO1siRNA转染食管鳞癌细胞系,运用CCK8检测增殖能力,Western blot检测凋亡分子的表达。结果 (1) ENO1蛋白的表达主要位于食管鳞癌细胞的细胞浆和细胞膜,少量表达于细胞核,其在食管正常组织、LGIN、HGIN、ESCC中的高表达率分别为12. 0%(6/44)、50. 0%(10/10)、70. 0%(14/20)、66. 0%(33/50)。ENO1在LGIN中的表达明显高于正常组织,在HGIN中的表达明显高于正常组织、LGIN,在ESCC中的表达明显高于正常组织、LGIN,差异具有统计学意义(P0. 01)。(2) ENO1蛋白的表达与食管鳞癌发病性别、年龄、分化程度、浸润深度等临床病理特征的相关性无统计学意义(P=0. 524,0. 089,0. 074),其高表达与淋巴结转移和TNM分期正相关(P=0. 008,0. 002)。Kaplan-Meier生存分析结果显示,ENO1高表达患者预后差(P0. 001)。(3)食管鳞癌细胞中敲低ENO1的表达后,细胞的增殖明显受到抑制,凋亡分子表达上调。结论 (1) ENO1在食管鳞癌组织中的表达明显高于正常组织。(2)ENO1高表达与淋巴结转移和TNM分期正相关,ENO1高表达患者预后差。(3) ENO1可以促进食管鳞癌细胞的增殖并抑制其凋亡。     

朊蛋白在头颈部鳞状细胞癌中的表达及意义

为检测朊蛋白在头颈部正常粘膜、头颈部鳞状细胞癌(head and neck squamous cell carcinomas,HNSCC)以及其各亚组之间的表达及其临床意义。采用免疫组化SP法检测HNSCC(212例)和正常黏膜(84例)中Pr P的表达情况,并分析其与年龄、组织病理分期、临床分期等临床参数的相关性。结果显示,Pr P在正常黏膜、HNSCC中的阳性表达率为10.71%(9/84)、66.51%(141/212),差异有统计学意义(P0.05),Pr P在高分化、中分化、低分化中的阳性率分别为28.36%(19/67)、68.12%(47/69)、98.68%(75/76),即阳性率随分化程度下降而升高(P0.05)。Pr P分别与病理分期、TNM分期、淋巴结转移、发生部位表达差异有统计学意义(P0.05),而不同年龄组表达差异无统计学意义(P0.05)。在TNM分期中,Ⅰ、Ⅱ期Pr P表达强度随分化程度下降而明显升高(P0.05),但与Ⅲ、Ⅳ期之间的差异无统计学意义(P0.05);而在头颈部正常粘膜,I+Ⅱ(早期)和Ⅲ+Ⅳ期(晚期)的总体表达差异中有统计学意义(P0.05)。由此可知,Pr P在HNSCC中的高表达与HNSCC的发生、病理分期、及临床TNM分期密切相关,可能为HNSCC的早期诊断和预后判断提供依据。     

RhoE/Rnd3在肝癌组织中的表达及临床意义

通过观察RhoE/Rnd3在肝癌组织中的表达情况及其与临床病理分级的关系,为探索RhoE/Rnd3的生物学功能和临床意义提供依据。对166例组织标本(其中正常肝脏组织60例,原发性肝癌病人106例)利用免疫组化研究RhoE/Rnd3在组织中蛋白水平的表达变化。RhoE/Rnd3在正常肝脏组织中普遍表达,但在原发性肝癌组织中表达低下或缺失。免疫组化结果显示RhoE/Rnd3主要分布在细胞的胞浆中。RhoE/Rnd3在原发性肝癌组织中的表达(阳性率为78%,83/106),明显低于其在正常肝组织(阳性率为97%,58/60)。P<0.005。且RhoE/Rnd3的表达随肿瘤组织分化程度的降低染色强度有下降趋势(P<0.005)。RhoE/Rnd3在原发性肝癌组织中表达明显降低,表明其对肿瘤的发生发展起到负性调控作用,结合目前的研究结果,RhoE/Rnd3可能是一种新型的抑癌基因,参与肿瘤细胞的凋亡过程。     

CEACAM6在卵巢粘液性肿瘤中的表达及其诊断意义

目的 探讨CEACAM6在卵巢粘液性肿瘤中的表达及其诊断意义.方法 利用免疫组化法检测CEACAM6在不同卵巢粘液性肿瘤、浆液性肿瘤和正常卵巢组织中表达情况.结果 21例良性粘液性囊腺瘤均为阴性或弱阳性表达,19例交界性肿瘤中16例阳性表达(84.2%);21例高分化癌中17例阳性表达(80.9%).11例低分化癌中7例2～3分阳性表达(63.6%);粘液性肿瘤中,良性粘液性囊腺瘤和交界性肿瘤、高分化癌、低分化癌相比均有统计学差异(P=0.000);交界性粘液性肿瘤、高分化癌、低分化癌之间两两比较,差异均无统计学意义(P＞0.05).浆液性肿瘤中,良性、交界性和恶性肿瘤CEACAM6表达均为阴性或弱阳性;15例正常卵巢组织阴性表达.粘液性肿瘤和浆液性肿瘤以及正常卵巢组织中CEACAM6的表达具有统计学差异(P=0.000).结论 CEACAM6特异性地表达于粘液性肿瘤中,而且CEACAM6的异常表达在卵巢粘液性肿瘤恶性变过程中是一个早期事件,起始于交界性肿瘤.     

Sp1调控FoxM1在卵巢癌中的表达

探讨Sp1调控转录因子FoxM1在卵巢癌中的表达。免疫组织化学染色验证FoxM1在卵巢癌组织中高表达,Spearman'rho秩相关分析Sp1与FoxM1在卵巢癌组织中的表达相关性;双荧光素酶报告系统检测Sp1对FoxM1的调控作用;Real-time quantitative RT-PCR和蛋白免疫印迹技术验证Sp1对FoxM1的调控作用。FoxM1在大于60%的卵巢癌组织中呈阳性表达(阳性率33/42≈79%),并且与Sp1的表达显著相关(r=0.809,P0.01);Sp1可以结合并激活Foxm1启动子(P0.05);上调Sp1表达可以激活FoxM1在卵巢癌中的表达(P0.05),而干扰Sp1后可以下调FoxM1的表达(P0.05)。Sp1参与调控增殖相关转录因子FoxM1在卵巢癌中的表达。     

恶性卵巢上皮源性肿瘤多向分化与Ki67蛋白表达的相关性

目的:探讨恶性卵巢上皮源性肿瘤多向分化与K i67蛋白表达关系。方法:应用组织化学、免疫组织化学SP法检测22例人正常卵巢组织和20例良性、41例恶性卵巢上皮性肿瘤黏液细胞分化和K i67、嗜铬粒蛋白A(CgA)表达。结果:(1)恶性卵巢上皮源性肿瘤K i67表达阳性率85.37%,其表达程度随组织学分级(P<0.01)、临床分期升高而增高(P<0.05),癌细胞增殖指数与神经内分泌细胞数量呈正相关;(2)恶性卵巢上皮源性肿瘤中CgA表达阳性率66.65%,明显高于良性肿瘤及正常卵巢组织(P<0.01),组织分级Ⅲ级表达强度强于Ⅰ级(P<0.05);(3)一些腺癌的腺腔、癌细胞胞浆、黏液上皮可见黏液分布。结论:恶性卵巢上皮性肿瘤存在黏液细胞分化和神经内分泌细胞分化,K i67蛋白表达与肿瘤的分化成熟程度密切相关。     

应用组织芯片技术分析驱动蛋白KIF18A在卵巢癌中的表达及其意义

采用组织芯片技术研究KIF18A蛋白与卵巢癌发生的关系,并探讨该蛋白分子治疗临床卵巢癌的潜在价值.对比100例卵巢癌病患的癌组织与正常组织芯片,KIF18A蛋白分子在正常卵巢组织、卵巢癌、转移淋巴结中皆有不同程度的表达.在卵巢癌组织中的表达明显高于正常组织(p≤0.05).卵巢浆液性乳头状腺癌的不同分期中,Ⅰ期与Ⅱ期相比,在Ⅱ期中KIF18A蛋白分子的表达明显上调(p≤0.05).同时,淋巴结转移性浆液性乳头状腺癌中的KIF18A蛋白表达量高于非转移性的浆液性乳头状腺癌(p≤0.05).这些结果表明,KIF18A蛋白分子的表达强度与卵巢癌的肿瘤临床分期以及淋巴结转移有关,可作为卵巢癌检测的新型标志物.     

乙酰肝素酶在膀胱移行细胞癌中的表达及意义

目的:探讨乙酰肝素酶(HPSE)在膀胱移行细胞癌(BTCC)中的表达及其与肿瘤临床病理特征的关系。方法:采用免疫组织化学方法(S-P法)检测62例BTCC及12例正常膀胱组织中HPSE的表达情况。结果:HPSE在62例BTCC中的阳性表达率为53.23%(33/62例),在正常膀胱黏膜不表达。HPSE在G1,G2和G3级BTCC中阳性表达率分别为23.53%(4/17例),57.14%(12/21例)和70.83%(17/24例),各组间差异有显著性(P<0.05)。HPSE在浅表性和浸润性BTCC中的阳性表达率为31.82%(7/22例)和65.00%(26/40例),有显著性差异(P<0.05)。HPSE在复发组中表达率为76%(19/25例),显著高于初发组(41.18%),P<0.05。HPSE阳性表达率与BTCC分级、分期及复发呈正相关。结论:HPSE在BTCC中的表达增高,与肿瘤分级、分期、复发相关,检测HPSE的表达可作为判断BTCC生物学行为和预后的客观指标。     

人卵巢癌裸鼠卵巢原位移植瘤模型的构建

为探讨人卵巢癌进展机制的相关研究,构建适宜的体内动物模型。采用慢病毒转染技术,构建稳定过表达绿色荧光报告基因(GFP)的人EOC细胞模型:SKOV3(人卵巢浆液性腺癌细胞株)和ES-2(人卵巢透明细胞癌细胞株);异氟烷吸入麻醉4-6周龄BALB/C(nu/nu)雌性裸鼠,从裸鼠背部正中纵切口进入腹腔,显微多点注射法分别将细胞模型悬液,移植于裸鼠的单侧卵巢,每组6只裸鼠;Night OWL活体成像系统动态观察裸鼠移植瘤生长和转移情况;移植术后4-6周解剖裸鼠,取卵巢和转移瘤组织行HE染色。结果显示,携带GFP的EOC细胞模型SKOV3和ES-2,均可成功构建裸鼠卵巢原位移植瘤模型,裸鼠未发生手术原因死亡,成功率均100%;活体成像系统通过检测GFP的荧光强度和范围,能够动态监测裸鼠移植瘤生长情况;SKOV3细胞模型构建的卵巢癌和转移瘤组织,HE染色观察病理特征符合人卵巢浆液性腺癌;ES-2细胞模型构建的卵巢癌和转移瘤组织,HE染色观察病理特征符合人卵巢透明细胞癌。由此可知,异氟烷吸入麻醉、从背部正中纵切口进入腹腔、显微多点注射法移植携带GFP的EOC细胞模型,能成功构建可动态监测的裸鼠卵巢原位移植瘤动物模型;该动物模型与人卵巢癌生物学特征类似,适宜作为研究人卵巢癌演变进展的体内模型。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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