小鼠腔前卵泡无血清体外培养的研究

目的:探索添加物维生素C和促性腺激素对小鼠腔前卵泡卵母细胞体外生长发育的影响及适合小鼠腔前卵泡体外生长发育的培养体系.方法:通过改良的TCM199无血清培养系统,在96孔细胞培养板中,每孔放入1个腔前卵泡等条件下体外培养腔前卵泡卵母细胞.结果:随着培养时间的延长,各组卵泡和卵母细胞的直径都不同程度的有所增长,其中FSH400+LH200组和VC50+FSH400+LH200影响均大于VC50和对照组,存在显著性差异(P0.05),但二者之间无显著性差异.FSH400+LH200质量浓度组卵泡存活率、发生GVBD率和第一极体排出率均最高,分别为68.6%、17.6%、9.8%.但VC50+FSH400+LH 200组卵泡成腔率最高,为48%.结论:在改良的TCM199无血清培养系统中,联合添加促性腺激素和抗氧化剂后,卵泡成腔率大有提高,卵泡存活率、发生GVBD率和第一极体排出率仅次于单独添加促性腺激素组.     

骨形态发生蛋白7在兔卵巢中的表达分析

为探讨BMP7蛋白在卵泡发育、黄体化和排卵过程中的作用,本研究采用免疫组织化学方法检测了BMP7在兔卵巢中的表达定位情况.结果显示, BMP7蛋白在兔卵巢原始卵泡和初级卵泡中未检测到表达;在次级卵泡卵母细胞及有腔卵泡的各种细胞中都有表达,但只在部分内膜细胞中表达;在间质细胞、黄体及表面上皮中也有表达.由此表明,BMP7没有参与兔原始卵泡的激活,而在初级/次级卵泡转化以及其后的卵泡成熟过程中发挥了作用;BMP7不仅是卵泡内膜细胞分泌因子,而且也是卵母细胞和颗粒细胞分泌因子.对BMP7的表达来说卵泡内膜细胞存在功能性差异.BMP7可能参与了兔黄体、排卵等活动的调节.     

促性腺激素对小鼠腔前卵泡及其卵母细胞体外发育的影响研究

通过使用改良的TCM199无血清培养系统,在96孔细胞培养板中,每孔放入一个腔前卵泡等条件下,探索促性腺激素(FSH、LH)对小鼠腔前卵泡卵母细胞体外生长发育的影响,旨在摸索一套适合小鼠腔前卵泡体外生长发育的培养体系.结果表明:随着浓度的增加,卵泡和卵母细胞的直径都不同程度的有所增长,在卵泡培养的同期相比,卵泡增长值最大组为FSH400+LH200组,而卵母细胞增长值最大组却是FSH400组.从添加物上看,各个实验组与对照组之间,卵泡直径和卵母细胞直径增长值都存在显著性差异(P0.05).随着培养时间的延长,FSH400+LH200组卵泡存活率、成腔率表现为最高,分别为68.6%,47%.从卵泡发生生发泡破裂率和第一极体排出率来看,FSH400+LH200组发生生发泡破裂率高于其他组,为17.6%,但第一极体排出率却低于FSH400组.因此,改良的TCM199无血清基础培养液中联合添加400mIU/mL FSH和200mIU/ML LH效果优于单独添加组的效果.     

抗氧化剂对小鼠腔前卵泡及其卵母细胞体外发育的影响研究

通过使用改良的TCM199无血清培养系统,在96孔细胞培养板中,每孔放入一个腔前卵泡等条件下,探索添加物抗氧化剂维生素C对小鼠腔前卵泡卵母细胞体外生长发育的影响,旨在摸索一套适合小鼠腔前卵泡体外生长发育的培养体系.结果表明:随着浓度的增加,卵泡和卵母细胞的直径都不同程度地有所增长,其中50μg/m L浓度组在卵泡培养相同时间下,卵泡和卵母细胞的增长值相对于其他浓度组略大些,但各浓度组之间无论是卵泡直径增长值还是卵母细胞直径增长值都不存在显著性差异(P0.05).培养到第6天时,50和100μg/m L浓度组卵泡存活率最高,为59.5%,且50μg/m L浓度组第一极体排出率最高,为2.38%,但发生生发泡破裂率次于150μg/m L浓度组.可得结论:在改良的TCM199无血清培养系统中,添加50μg/m L维生素C有利于腔前卵泡卵母细胞的生长,而添加150μg/m L维生素C有利于生发泡破裂.     

猪卵母细胞体外成熟的研究

从屠宰场收集卵巢，用注射器从卵泡中吸出卵丘－卵母细胞复合体，对猪卵母细胞体外成熟的条件进行研究，根据卵母细胞体外成熟时的核成熟率、胞质成熟及体外受精时精子的穿卵速度，合适的体外成熟培养时间为４２～４５ｈ．卵母细胞周围卵丘细胞的多少及其排列紧密状态与卵母细胞的体外成熟率密切相关。卵泡大小与卵母细胞的体外成熟率有关，大卵泡卵优于小卵泡卵。ＰＭＳＧ促进猪卵母细胞体外成熟。     

小鼠腔前卵泡卵母细胞的体外培养、体外成熟和体外受精研究

小鼠腔前卵泡在体外生长过程中，于培养液中添加血清，以及ＦＳＨ和胰岛素均对小鼠腔前卵泡的体外生长、体外成熟、体外受精起促进作用，其中以胰岛素的效果最为显著，腔前卵泡的体外成熟率和体外受精率可达６９．４％和８０．６％，但是体外受精后的体外发育率低于添加ＦＳＨ的试验组，表明ＦＳＨ有益于卵母细胞生长过程中细胞质的成熟。单层培养的卵巢颗粒细胞对腔前卵泡的体外生长也具有促进作用。将体外受精后发育至２—细胞的胚胎移植入受体鼠，胚胎可以正常着床发育。同时，卵母细胞的核仁和线粒体在培养过程中也发生相应的变化。     

体外培养绵羊卵母细胞超微结构的变化

实验利用透射电镜研究了根据卵泡大小和卵丘细胞层多少分类后类绵羊卵母细胞在体外成熟增培养前后超微结构的变化,结果表明,小卵泡卵经过体外培养其线粒体、皮层颗粒等细胞器均未达到熟卵母细胞中这两种超微结构的分布状态;大、中两类卵泡卵经过体外培养细胞成熟较好,     

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。     

猪卵母细胞生长成熟过程中脂质成份的研究

本实验应用Ｃａｔａｌａｎ及Ｌｉｌｌｉｅ氏油红Ｏ染色法和Ｂａｋｅｒ氏酸性氧化苏木精染色法，对猪卵母细胞生长成熟过程中脂质成份的改变情况进行了染色研究，把生长卵泡按其直径：０．８～２．４ｍｍ（Ｓ组）、２．５～４ｍｍ（Ｍ组）、＞４ｍｍ（Ｌ组）分为三组，分别取其中的卵母细胞进行染色观察．另外，还作了卵巢冰冻切片的染色观察．结果表明，在卵泡腔形成之前的猪卵母细胞中就含有大量的脂滴，在卵泡形成时，卵母细胞内的脂滴有所增加．脂滴中含有中性脂肪和磷脂．     

分离方法和卵巢发育状况对猪腔前卵泡分离及体外培养的影响

以直径在200～300μm的腔前卵泡为研究对象，研究了不同分离方法及卵巢不同发育状况对猪腔前卵泡分离及体外培养的影响。结果表明，显微分离法每个卵巢可采集的卵泡数极显著高于剪碎过滤法（24．75±2．99vs2．60±0．35，P〈0．01），显微分离法分离每个腔前卵泡所用的时间极显著低于剪碎过滤法（5．40±0．44vs15．52±1．18，P〈0．01）；有黄体和无黄体的卵巢对卵泡分离的影响差异不显著（26．10±2．02vs24．35±2．32，P〈0．05），但有黄体的卵巢分离的卵泡数稍多于无黄体的卵巢。此外，对两种分离方法分离出的腔前卵泡进行培养研究表明，两种分离方法对卵泡体外生长和存活，以及正常卵母细胞比率均没有显著影响（P〉0．05）。     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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