P53蛋白在三种爬行动物卵泡内的免疫组织化学定位

应用免疫组织化学ABC法对无蹼壁虎、赤链蛇、中华鳖的卵泡进行P53定位。结果发现：无蹼壁虎卵泡内少数颗粒细胞胞浆有阳性表达，而赤链蛇卵泡颗粒细胞胞浆均呈P53免疫反应强阳性，中华鳖的早期卵泡细胞呈P53阳性。由此推测P53蛋白在无蹼壁虎、赤链蛇卵泡中表达可能与颗粒细胞凋亡有关，在中华鳖卵泡高表达对早期卵泡的生长分化和原始卵泡的启动可能有重要的调控作用。     

慢性ITP患者外周血调节性T细胞及相关细胞因子的研究

为研究慢性特发性血小板减少性紫癜（CITP）患者外周血CIM＋CD25＋调节性T细胞（Treg）数量及转化生长因子β1（TGF—β1）的表达水平,探讨它们在CITP发病机制中的作用。流式细胞仪分别检测26例CITP患者及20例健康人外周血Treg细胞的数量,ELISA法检测血清中TGF—β1的含量,并进行相关性分析。CITP患者外周血Treg细胞的数量明显低于正常对照组（P〈0．05）;CITP患者血清TGF—β1的含量也低于正常对照组（P〈0．05）,差异有统计学意义,CITP患者外周血Treg细胞的比例与血清中TGF—β1的含量都呈正相关（P〈0．05）。CITP患者外周血中Treg细胞数量的减少及TGF－β1含量的降低可能与CITP的细胞免疫失调有关。     

古尼拟青霉菌丝体多糖(MPPG)对肿瘤细胞产生免疫抑制因子的影响

用MTT法分别检测了MPPG对LPS诱导鼠脾细胞体外增值的影响、体外对S180的影响,检测了MPPG培养的各种肿瘤上清液对LPS诱导的鼠脾细胞体外增殖的影响、对小鼠脾NK细胞的活性的影响,以及ELISA法测定各种肿瘤上清液中TGFβ1的分泌量.100μg/m lMPPG培养的肿瘤上清液可明显减少对LPS诱导的鼠脾细胞增值和NK细胞的杀伤活性的抑制作用,同时多糖培养的肿瘤上清液中免疫抑制因子TGFβ1的含量较单纯肿瘤上清液的TGFβ1的含量明显的降低.MPPG可降低肿瘤细胞的免疫抑制作用,减少肿瘤细胞产生免疫抑制因子TGFβ1.     

高通量抗体芯片研究AILD血清炎性因子表达特征

利用微阵列抗体芯片技术检测53例自身免疫性肝病(AILD)患者血清中20种辅助性T细胞相关炎性因子的表达水平,结合肝功能临床生化数据,分析炎性因子的表达特征和差异性.高通量抗体芯片检测结果显示:AIH-PBC OS患者血清中IL-4和TGFβ1表达量水平显著高于PBC组(P0.05),AIH-PBC OS患者血清中IL-4表达量水平显著高于健康对照组(P0.05),PBC患者血清中IL-4和TGFβ1表达量水平显著低于健康对照组(P0.05).PBC患者血清中TGFβ1表达量与ALT(r=-0.6301,P=0.0135)、AST(r=-0.7443,P=0.0030)呈显著负相关.结果表明:IL-4和TGFβ1在AIH-PBC OS患者和PBC患者血清中表达量差异(P0.05)和TGFβ1表达量与AILD患者肝功能指标间的相关性为筛选具有临床检验、诊断、治疗和预后监测意义的AILD相关细胞因子奠定了基础.     

TGFβ1介导雌二醇对前列腺间质细胞smoothelin表达的促进作用

研究了雌激素在促进前列腺基质细胞化过程中作用的分子机制.在前列腺基质细胞培养液中分别添加TGFβ1,雌二醇、雌二醇和ICI182.780、睾酮、睾酮和芳香化酶抑制剂、双氢睾酮、雌二醇和TGFβ1中和抗体;用半定量RT-PCR的方法检测基质细胞中平滑肌细胞特异蛋白smoothelin和TGFβ1 mRNA的表达水平;用ELISA测定基质细胞培养基中TGFβ1的浓度.结果显示TGFβ1可明显促进smoothelin的表达;雌二醇和睾酮能明显刺激TGFβ1基因和蛋白的表达水平,而雌激素受体抑制剂ICI182.780和芳香化酶抑制剂可分别抑制雌二醇和睾酮对TGFβ1表达的促进作用;双氢睾酮对TGFβ1基因的表达没有影响.TGFβ1中和抗体能抑制雌二醇对smoothelin的促表达作用.结果显示雌二醇可能通过诱导TGFβ1促进前列腺平滑肌细胞特异蛋白smoothelin的表达.     

人类体外受精助孕治疗中多原核受精的相关因素分析

收集2011年7月至2012年11月在广西生殖医学研究中心行体外受精助孕治疗的456例患者资料,将观察到多原核受精的235例作为多原核受精组,未观察到多原核受精的221例作为无多原核受精组,比较两组间基础卵泡刺激素(基础FSH)、黄体生成素(LH)水平、窦卵泡数(AFC),促性腺激素(Gn)总剂量及天数,HCG(人绒毛膜促性腺激素)日血清雌二醇(E2)水平、HCG日血清孕酮(P)水平、HCG日血清黄体生成素(LH)水平,HCG日大卵泡(≥14mm)数,获卵数,受精密度等助孕治疗相关指标的差异,分析人类体外受精中多原核受精的影响因素。结果提示,Gn用量小,HCG日血清E2水平较高,卵泡数及获卵数较多,受精率较高的周期中出现至少1个多原核受精合子的可能性比较大。     

川金丝猴卵巢的组织学研究

对２只川金丝猴的卵巢作了组织学观察，测量分析了卵泡和卵母细胞的生长发育过程及它们之间的相互关系：川金丝猴卵泡及卵母细胞具哺乳动物双相生长的共同特点，在生长过程中仅有少数优势卵泡被确定下来，其余卵泡均在不同时期成为闭锁卵泡；透明带出现在单层卵泡细胞呈矮柱状期，随卵泡及卵母细胞的增长，透明带缓慢增厚。     

TGF-β1对不同肺癌细胞生物学行为的影响

用重组人转化生长因子β1（TGF－β1）处理不同的肺癌细胞95C、95D，研究TGF－β1对不同肺癌细胞迁移、粘附等生物学行为的影响，从而揭示肿瘤细胞的恶性行为机制。按Dean Sheppard方法测定细胞迁移能力；用划痕法和琼脂滴法测定细胞迁移能力；同时还测定了各肺癌细胞的铺展。结果表明：95C的迁移能力、细胞铺展率和增殖率最高，95D次之；用TGF－β1处理后，95C、95D与Fn的粘附率和铺展率较对照组都有显著增加，TGF－β1处理24、48h后可以明显增加两株肺癌细胞的迁移率。TGF－β1处理对两株肺癌细胞的增殖和生长无显著影响。提示不同肺癌细胞迁移和粘附能力存在差异，TGD－β1对肺癌细胞生长学行为存在显著影响。TGF－β1对所介导的信号转导通路起着重要的调控作用，从而影响肺癌细胞的若干生物学行为。     

非小细胞肺癌中转化生长因子βⅠ型受体基因的缺陷表达

转化生长因子β(TGF-β)信号转导通路的紊乱可使细胞逃避TGF-β介导的生长抑制效应,从而导致多种肿瘤的发生.本研究探讨了转化生长因子βⅠ型受体(TGFβRⅠ)在非小细胞肺癌(NSCLC)发生中的作用.采用免疫组化进行TGFβRⅠ基因的表达分析:采用单链构象多态性(SSCP)分析TGFβRⅠ基因结构的变异.结果发现37.2%NSCLC中TGFβRⅠ的表达下降,表明TGFβRⅠ在NSCLC发生中起着重要的作用.同时在TGFβRⅠ基因的第7号内含子中发现了一个单核苷酸多态性(SNP),该SNP与TGFβRⅠ的表达下降无显著关系(P>0.05).     

颗粒细胞存活或凋亡因子对卵泡生长与闭锁的调控

颗粒细胞的生存或凋亡在决定卵泡的发育的命运方面发挥着重要作用,它既可以提供促进卵泡生长、发育维持的因子,也可以产生促使卵泡凋亡的因子。在这篇文章中,我们将重点讨论存在于颗粒细胞中调控卵泡生长和闭锁的因子,包括胰岛素样生长因子、细胞因子、凋亡配体-受体系统、BCL2家族成员。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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