小分子药物ACT001抑制人脑胶质母细胞瘤U118MG细胞系迁移作用机制的研究

脑胶质母细胞瘤(Glioblastoma,GBM)是脑肿瘤中最具致命性的高等级脑胶质瘤,目前尚无有效治愈药物.ACT001属于倍半萜内酯化合物,目前已进入Ⅰ期临床试验阶段,对脑胶质母细胞瘤有着很好的疗效,然而作用机制并不明确.本研究探究了ACT001作用脑胶质母细胞瘤的机制,发现ACT001可显著降低人脑胶质母细胞瘤U118MG的迁移能力,并下调STAT3通路相关蛋白的表达,且沉默STAT3蛋白后,U118MG迁移能力以及相关迁移蛋白的表达水平也同样受到影响.结果表明,ACT001可通过下调STAT3蛋白进而影响其下游Twist1和ZEB1迁移相关蛋白的表达水平,最终对U118MG细胞的迁移产生抑制作用.     

肌纤维母细胞瘤

目的:观察肌纤维母细胞瘤形态、组织化学及电镜特点。方法:对1例结肠系膜肌纤维母细胞瘤进行光镜、电镜观察及组织化学染色。结果:HE染色可见瘤细胞由大量成束的梭形细胞及少量星芒状细胞构成,伴淋巴细胞浸润;VG染色瘤组织呈红色和黄色的混合色;电镜可见胞浆内含肌丝及胶原原纤维。结论:肌纤维母细胞瘤兼具纤维母细胞及平滑肌细胞形态及功能特点,可能来源于间充质细胞,可以为良性病变,具有局部复发倾向。     

睾丸肿瘤组织中mdm—2基因表达及临床意义

为了探讨mdm－2基因与睾丸肿瘤发生及预后的关系，应用免疫组化方法检测27例睾丸肿瘤中mdm－2蛋白表达水平，发现有12例为mdm－2蛋白阳性表达，并且与睾丸肿瘤的病理分级和临床分期有关。提示睾丸肿瘤恶性程度与mdm－2蛋白表达具有明显相关性。mdm－2蛋白表达可能成为睾丸肿瘤预后的指标。     

软骨母细胞瘤的超微结构

自Ewing最早提出钙化性巨细胞瘤以及Codman提出骨骺软骨巨细胞瘤(epiphysealchondromatous giant cell tumor)以后,普遍认为它是一种良性肿瘤。1942年Jaffe和Lichtenstein把这种好发于长骨骺端的肿瘤定名为软骨母细胞瘤。此后,大多数作者认为它由骺板残余所引起,而Schajawicz则认为此瘤由网状细胞诱发而来。 软骨母细胞瘤的超微结构,文献报告不多。本文就四例软骨母细胞瘤的电镜观察,叙述其超微结构特征及生物学特性。     

喉髓母细胞瘤的光镜及电镜观察

本文报告一例原发于喉部的髓母细胞瘤。结合临床、光镜及电镜检查,复习了有关文献,对本病做扼要的讨论。     

髓母细胞瘤中P53、bcl-2及Ki-67的表达及其意义

用免疫组化S P法检测 2 5例髓母细胞瘤中Ki 6 7、P53 及bcl 2基因的表达。结果表明 ,在 2 5例髓母细胞瘤中 ,bcl 2和P53 蛋白的阳性表达率分别为 72 % (18/ 2 5 )和 16 % (4/ 2 5 )。Ki 6 7阳性率平均为 (33.34± 4 .98) % ,其表达与组织学分型有关。说明在髓母细胞瘤中bcl 2蛋白与P53 蛋白可能参与调控细胞的凋亡     

42例甲状腺肿瘤的免疫组化研究

本文应用免疫组化法对甲状腺肿瘤组织中TG的合成多少及分布特点进行了观察和探讨,另外还选抗癌胚抗原多克隆抗体和抗S—100蛋白抗体作对比观察,计有甲状腺腺瘤23例,乳头状癌12例,滤泡性癌3例,未分化癌3例,及鳞癌1例,共42例。用ABC免疫组化标记法其结果显示:①抗TG多克隆抗体对良、恶性甲状腺肿瘤的标记有明显的差异。②抗CEA多克隆抗体对良、恶性甲状腺肿瘤的标记阳性率较低。前者为8.7％,后者为15.8％。③抗S—100蛋白抗体对良、恶性甲状腺肿瘤的标记阳性率较高于CEA的标记阳性率。分别为30％和42.1％。     

胃癌中p53基因失活及其蛋白产物的免疫组化分析

应用ＰＣＲ－ＳＳＣＰ银染，Ｓｏｕｔｈｅｒｎ杂我及免疫组化等方法同步研究２５例胃癌标本的ｐ５３基因突变，杂合性丢失及蛋白持表达，在２２例胃癌中同时获得有关ｐ５３基因突变和杂合性丢失的检测结果，被检出ｐ５３基因突变的５例胃癌中，２例伴有杂合性丢失，３例仅有ｐ５３基因突变。     

骆驼蓬总碱对SO－RB_（50）细胞裸小鼠移植瘤抑瘤作用研究（初步报告）

为研究骆驼蓬总碱对ＳＯ－ＲＢ５０细胞裸小鼠皮下移植瘤抑瘤作用研究，特将ＳＯ－ＲＢ＿（５０）细胞接种于裸小鼠颈背皮下形成移植瘤，用５０ｍｇ／ｋｇｄ及７０ｍｇ／ｋｇ／ｄ骆驼蓬总碱每天腹膜腔内注射一次，连续９天共注射９次。停药后２４小时称体重并剥离肿瘤称重，取材作光镜和电镜检查。结果显示骆驼蓬总碱抑瘤率５０ｍｇ／ｋｇ／ｄ组为３２％，７０ｍｇ／ｙｇ／ｄ组为８９％，肿瘤细胞大量变性坏死及崩解。实验说明骆驼蓬总碱对视网膜母细胞瘤有明显的抑杀作用。     

不同S180细胞株蛋白质特性的电泳及免疫组化法比较研究

用ＳＤＳ聚丙烯酰胺凝胶电泳（ＳＤＳ－ＰＡＧＥ）和免疫组化染色方法，比较研究４个不同单位保种的小鼠肉瘤（Ｓ１８０）细胞蛋白质的表达。电泳结果显示，北京市肿瘤研究所仲种的Ｓ１８０蛋白质条带数最多，武汉大学保种中心的Ｓ１８０最小。免疫组化染色法测定四个单位Ｓ１８０细胞的Ｒａｆ－１、Ｔｒｋ、Ｇａｉ、Ｇａｏ和ＮＦＫｂＰ６５蛋白表达，Ｇａｉ、ＴｒｋＡ和Ｒａｆ－１阳性率均低于０．２％；Ｇａｏ阳性率均低于４．２％     

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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