小鼠肝癌H_(22)克隆细胞株H2D8与其原瘤株武汉H_(22)的基本特性比较研究

用细胞克隆的方法获得武汉大学典型培养物保藏中心保存的小鼠肝癌H2 2 瘤株 (武汉H2 2 )的克隆细胞株H2D8。比较武汉H2 2 及H2D8对血清的依赖性、致瘤性、病理特征和对环磷酰胺 (CTX)的敏感性。结果发现H2D8细胞株对血清的依赖性 ,和对小鼠致瘤性及肿瘤病理学特性与武汉H2 2 细胞无明显差异 ;H2D8细胞对CTX治疗的敏感性更高。说明H2D8克隆株在体外培养、致瘤性和病理特征方面能保持原瘤株的细胞特性 ;在化疗敏感性方面优于原代细胞     

竹节参总皂苷的抗肿瘤作用和毒性研究

为评价竹节参总皂苷对移植性H22荷瘤小鼠的肿瘤抑制作用和对其免疫系统的毒性,用SPF级雄性小鼠接种肝癌H22瘤株建立移植性肝癌H22小鼠模型,观察不同剂量的竹节参总皂苷对移植性H22荷瘤小鼠给药12d后的抑瘤率、小鼠体重和免疫器官指数.结果表明:40,80,160 mg/kg竹节参总皂苷对移植性H22荷瘤小鼠的抑制率分别为30.7％,38.6％,48％,竹节参总皂苷能增加H22荷瘤小鼠小鼠体重,但对其免疫系统无明显毒性.说明竹节参总皂苷具有较显著的抗肿瘤作用,可成为抗癌新药.     

化胃舒颗粒体内抗肿瘤作用的实验研究

摘要: 目的探讨化胃舒颗粒对小鼠移植性肿瘤的抑制作用。方法以S180 肉瘤和H22 肝癌作为实验瘤株,观察化胃 舒颗粒对S180 小鼠肉瘤的抑瘤率及对H22 肿瘤小鼠生存期的影响。采用小鼠移植性肿瘤S180 实体瘤模型,观察化胃舒 颗粒与环磷酰胺( CTX) 联用对S180 实体瘤小鼠的白细胞数及抑瘤率的影响。结果化胃舒颗粒能阻止S180 肿瘤生长, 小鼠肿瘤抑制率在30%以上; 化胃舒颗粒能明显延长H22 肿瘤小鼠的生存时间; 化胃舒颗粒能抑制由环磷酰胺( CTX) 引 起的S180 实体瘤小鼠血液中白细胞总数的减少,从而增强环磷酰胺( CTX) 的抑瘤作用。结论化胃舒颗粒对S180 肉瘤 和H22 肝癌荷瘤小鼠有明显的抗肿瘤作用,与环磷酰胺( CTX) 合用有显著的减毒增效作用。     

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％     

空间环境对黑色素瘤B16细胞致瘤基因和蛋白质表达的影响

初步探讨了空间环境对黑色素瘤B16细胞致瘤基因和蛋白质表达的影响。选择经第20颗返回式卫星搭载的B16细胞,进行体外和体内实验后,筛选出性状变异明显的空间诱变B16细胞株,检测空间诱变B16细胞基因和蛋白质表达的变化。将筛选出的空间诱变B16细胞接种于C57BL/6小鼠,2周后,处死荷瘤小鼠,取出移植瘤,利用免疫组化方法,检测接种空间诱变B16细胞的荷瘤小鼠移植瘤细胞Melan-A和VEGF蛋白的表达情况;利用RT-PCR方法,检测蛋白质水平上表达变化明显的空间诱变B16细胞melan-a,gp100,bag-3和l-pgds基因的表达情况。与对照细胞相比,1株空间诱变B16细胞荷瘤小鼠移植瘤细胞Melan-A和VEGF蛋白表达明显增加,其他细胞2种蛋白质的表达无明显变化。RT-PCR结果显示:此株细胞的melan-a,gp100和l-pgds基因表达增加,bag-3基因表达降低。空间环境的复合因素可诱导B16细胞基因和蛋白质表达产生变化。     

H22 实体瘤小鼠生存实验及环磷酰胺对生存期的影响

摘要: 目的研究腹水型H22 肝癌皮下移植小鼠的生存期及环磷酰胺的影响。方法将H22 肝癌腹水瘤细胞接种 于BALB / c 小鼠左侧腋窝皮下,5d 后按肿瘤体积随机分成环磷酰胺组和对照组。环磷酰胺组腹腔注射环磷酰胺 50 mg / kg,每周2 次。观察小鼠一般临床表现、成瘤时间、成瘤率、体质量、摄食量、饮水量、肿瘤体积及生存时间。 结果H22 皮下移植小鼠成瘤时间约为5 d,成瘤率100% 。环磷酰胺组体质量、肿瘤体积与对照组比较明显降低 ( P ＜ 0. 05) ,环磷酰胺组摄食量、饮水量与对照组比较有增加的趋势。H22 皮下移植瘤小鼠平均生存时间为87 d, 环磷酰胺组小鼠平均生存时间为113 d( 生命延长率30. 3% ,P ＜ 0. 01) 。结论H22 腹水型肝癌皮下移植小鼠是一 种较理想的实体瘤模型,具有正常的免疫功能,可用于生物反应调节剂抗肿瘤药物影响荷瘤小鼠的生存期实验。     

重组ProTα对肝癌小鼠Treg细胞和NKG2D阳性细胞的影响

为观察不同时期应用重组胸腺素α原(ProTα)药物干预下肝癌荷瘤小鼠的抑瘤率,并研究其对Treg细胞和NKG2D阳性细胞的影响,将36只昆明小鼠随机分成空白组、荷瘤组、药物干预组,H22小鼠肝癌细胞皮下移植建立荷瘤小鼠模型,腹腔注射重组ProTα,观察7和14d后肝癌荷瘤小鼠的抑瘤率,并检测外周单个核细胞中调节性T细胞(Treg细胞)和NKG2D阳性细胞的比例.结果表明:移植瘤7d后,药物干预组和荷瘤组瘤质量对比无显著差异;而移植瘤14d后,药物干预组瘤质量较荷瘤组有显著减小.荷瘤14d后,荷瘤组较空白组Treg细胞比例升高,NKG2D阳性细胞比例下调,差异显著;而不论是早期药物干预组还是进展期(即移植瘤7d后)药物干预组,Treg细胞比例均显著降低,NKG2D阳性细胞显著升高.由此可见,重组ProTα能够抑制肝癌荷瘤小鼠肿瘤生长,且早期、长期用药效果更好,相关作用机制涉及下调Treg细胞数量从而抑制肝癌细胞免疫逃逸,并上调NKG2D阳性细胞数量从而提高其介导的抗肿瘤效应.     

“江边一碗水”总木脂素的抗肿瘤作用及一般毒性的研究

为评价"江边一碗水"总木脂素对H22荷瘤小鼠的肿瘤抑制作用和相关毒性,用SPF级雄性小鼠腋下接种肝癌H22瘤株建立了移植性肝癌H22小鼠模型,观察了不同剂量的"江边一碗水"总木脂素给药10 d后对荷瘤小鼠的肿瘤抑制率、体重、免疫器官指数及血尿常规、肝肾功等的影响.结果表明:50,100,200 mg/kg"江边一碗水"总木脂素的抑瘤率分别为44.9%,54.8%和62.1%."江边一碗水"总木脂素对H22小鼠体重、免疫器官指数、造血系统、肝肾功能等生理生化指标无明显影响.故"江边一碗水"总木脂素具有较显著的抗肿瘤作用和较低的毒性,是其抗肿瘤的药效物质基础.     

三氧化二砷对小鼠实体瘤抑瘤作用的实验研究

建立肝癌实体瘤小鼠模型,观察不同浓度的三氧化二砷(As2 O3)对实体瘤小鼠瘤体重量的影响,检测实体瘤小鼠白细胞(WBC)数量,并进行骨髓涂片检查,了解As2 O3对骨髓造血功能的影响.结果表明低,中浓度As2 O3治疗肝癌实体瘤小鼠的瘤体重量明显减小,抑瘤率分别达39.3%和24.4%,与对照组相比有显著差异(P＜0.01和P＜0.05);高浓度As2 O3治疗肝癌实体瘤小鼠的瘤体重量减小不明显,与对照组相比无显著差异(P＞0.05).低、中浓度As2O3治疗肝癌实体瘤小鼠外周血WBC数量明显增多,骨髓涂片检查发现有核细胞增生活跃,粒红比例正常,巨核细胞多见,说明治疗量的As2O3对骨髓造血功能无抑制作用.     

广西藤茶提取物TTF抗肿瘤作用的实验研究

观察广西藤茶提取物（简称TTF）及其含药血清抗肿瘤作用,采MTT法,观察含药血清对肉瘤细胞（S180）、肝癌细胞（H22）、白血病细胞株（L1210）细胞增殖的抑制作用;体内试验以荷瘤小鼠实体瘤重、抑瘤率为实验指标评价TTF对S180移植性肉瘤的抑制作用;以荷瘤小鼠存活时间为实验指标评价TTF对H22移植性腹水癌的抑制作用。实验结果表明含药血清在体外对S180细胞、H22细胞和L1210细胞有明显的抑制作用,体内能明显抑制实体瘤重和延长荷瘤小鼠存活时间。证明TTF体内及含药血清具有一定抑制S180、H22、L1210肿瘤细胞增殖及S180、H22诱发的移植性肿瘤作用．     

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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