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.     

孕期高雄大鼠子代实验性多囊卵巢综合征模型构建

通过母体高雄环境建立子代实验性多囊卵巢综合征(PCOS)大鼠模型,并证明此模型大鼠存在卵巢局部胰岛素抵抗。方法是给孕16d的雌鼠皮下注射丙酸睾丸酮,诱导其子代雌鼠发生PCOS,观察子代大鼠体重、动情周期变化、性激素变化及糖代谢变化、卵巢重量和卵巢形态变化、肌肉组织蛋白印迹测定PI-3K和MAPK通路关键蛋白的表达、卵巢免疫组化和蛋白印迹测定PI-3K和MAPK通路关键蛋白的表达确定。结果显示:①动情周期失去规律变化,提示无排卵;②血清17-OHP,A2,T升高;③卵巢组织学检查可镜下看到早期发育的较多的小卵泡、闭锁卵泡,囊状扩张卵泡明显增加,颗粒细胞层数减少,黄体数量明显减少;④OGTT:1h血糖及胰岛素高于对照组,模型组存在着胰岛素抵抗;⑤卵巢局部PI-3K和MAPK途径关键蛋白有表达;⑥卵巢局部蛋白印迹测定PI-3K和MAPK途径关键蛋白IRS-1,P85,GLUT4降低,ERK1升高。由此表明:①此模型大鼠符合PCOS的诊断标准;②此模型大鼠存在卵巢局部胰岛素抵抗。     

中华鳖卵泡免疫组织化学研究

应用六种特异性抗血清(抗EGF、NGF、TGFβ1、HCG、AFP、P53)对中华鳖卵巢内卵泡细胞进行免疫组织化学定位。结果发现：NGF免疫反应出现在颗粒细胞及卵泡鞘。AFP、EGF、HCG阳性细胞均在胚床中发现，TGFβ1在卵泡鞘中被发现，P53阳性细胞在早期卵泡细胞中发现。由此探讨各种因子与卵泡发育的功能关系以及各因子见的相互作用及调控蛋白的时序性表达对其影响。     

中华蟾蜍卵巢性类固醇激素受体的免疫细胞化学研究

为探讨两栖动物卵巢内不同性类固醇激素受体在卵子发育中的调控作用.采用免疫细胞化学方法,对中华蟾蜍不同发育时期卵泡中的雌激素受体、孕激素受体和雄激素受体进行了定位检测.结果发现,三种受体在不同发育时期的卵泡中均有阳性反应:雌激素受体在卵黄合成期和卵黄合成后期的滤泡细胞表达为强阳性,在卵母细胞胞质和核膜中呈弱阳性反应;孕激素受体在卵黄合成早期的滤泡细胞和卵母细胞质、核膜中表达均较弱,在卵黄合成后期表达均增强;雄激素受体在卵黄合成早期的滤泡细胞和卵母细胞胞质、核膜中表达也均较弱,在卵黄合成后期卵母细胞胞质和核膜中表达略有增强.     

隆肛蛙卵巢性类固醇激素的免疫细胞化学研究

目的 深入探讨两栖动物卵巢内不同性类固醇激素在卵子发育中的调控作用。方法 用免疫细胞化学方法对隆肛蛙不同发育时期卵泡的性类固醇激素雌二醇、孕酮和睾酮进行定位检测。结果 雌二醇在卵黄合成期的卵母细胞和滤泡细胞中表达为强阳性，而在趋于成熟的卵泡中表达减弱；孕酮在卵黄合成期和卵黄合成后期的卵母细胞和滤泡细胞中表达较强；睾酮在各期卵母细胞中的表达均较弱，仅在卵黄合成后期表达略有增强。结论 雌二醇与卵黄合成关系密切，而睾酮和孕酮在卵母细胞成熟中起着重要的调控作用。     

羔山羊卵泡的发育及卵母细胞体外成熟的研究

为利用羔羊作供胚羊，采用三种超数排卵的方法，对出生后４０～１５０日龄的羔山羊进行超数排卵处理以后，从活体采集卵巢卵母细胞在体外进行了培养．研究结果表明，采用超数排卵的技术能够诱导未性成熟羔山羊的卵巢卵泡的发育，由超排后采集到的羔山羊卵泡卵母细胞经体外培养有继续发育成熟的能力．适宜的超排方法为ＦＳＨ１０ｍｇ＋ＬＨ１．５ｍｇ（肌肉注射），羔山羊适宜的超排日龄为４０～９０ｄ，卵母细胞的体外适宜培养时间为１８～２８ｈ．     

猪骨形态发生蛋白15基因的分子克隆及分析

骨形态发生蛋白15(Bone Morphogenetic Portein-15,BMP15)由卵母细胞特异表达,在卵母细胞发育与成熟过程中起重要调控作用.本文以长白猪为研究模型,克隆BMP15基因cDNA全长并探究该基因组织表达图谱.研究显示,家猪BMP15基因cDNA全长1298bp,编码具402个氨基酸的前体蛋白.依赖RT-PCR技术,家猪Bmp15基因被发现特征性表达于家猪卵巢中.在本研究中,还分离到家猪BMP15基因潜在启动子区(3279bp),针对该启动子区,部分转录因子结合位点获得预测.这些研究结果为探究BMP15基因的表达调控机制及其对家猪卵泡发育影响奠定基础.     

过表达 miRNA-320 对顺铂诱导卵巢早衰大鼠卵巢功能的影响

摘要:目的 探讨过表达 miRNA-320 对顺铂诱导卵巢早衰大鼠卵巢功能的影响。 方法 选择清洁级 SD 雌性大鼠32 只,随机分为 4 组:正常对照组、模型组、阴性对照组和 miRNA-320 过表达组,每组 8 只。 在实验过程中,每天观察各组大鼠饮食、活动和体毛等外在表现的差异。 采用 ELISA 检测各组大鼠血清中 E2、FSH、LH 的含量;采用 HE染色,光镜下观察各组大鼠卵巢组织形态学变化;采用 PCR 检测各组大鼠卵巢组织 miRNA-320、PGRMC1、BMP15的表达水平;采用 Western blot 检测各组大鼠卵巢组织中 PGRMC1、BMP15 的蛋白表达水平。 结果 与正常对照组相比,模型组大鼠活动迟缓、无精神、反应迟钝、食欲下降、体质量下降以及体毛暗淡无光泽;组织形态学分析表明,卵巢组织明显萎缩、皮质变薄、闭锁卵泡数目多以及间质纤维组织增多;血清 FSH、LH 显著升高,而血清 E2 及卵巢组织中 PGRMC1、BMP15 的蛋白和 mRNA 表达水平均降低,差异具有统计学意义( P< 0. 05) 。 与阴性对照组相比,miRNA-320 过表达组大鼠活动量增加、反应较为敏捷、进食增多、体毛逐渐有光泽;间质纤维化明显减轻、成熟卵泡数量明显增加、黄体数增多;血清 E2 的含量、卵巢组织中 PGRMC1、BMP15 的蛋白和 mRNA 的表达水平均升高,而FSH、LH 的含量降低( P<0. 05) 。 结论 顺铂可诱导卵巢早衰大鼠卵巢功能障碍,过表达 miRNA-320 可改善顺铂诱导的卵巢早衰大鼠的卵巢功能。     

Wnt信号通路在卵泡发育中的调控研究

卵巢是维系女性生育的重要器官,主要功能是产生卵子,完成人类繁殖的任务.卵泡作为卵母细胞发生和发育的基本功能单位,控制着雌性哺乳动物所有的生殖活动.近几年的研究显示,Wnt信号通路在调节卵巢卵泡发育和类固醇生成等方面发挥重要作用,在卵巢早衰、卵巢癌等女性生殖疾病中起到重要调控作用.就Wnt信号通路对卵泡发育的影响及其作用...     

不同发育时期小鼠卵巢腔前卵泡的分布及形态学研究

通过石蜡切片-HE染色技术,系统研究小鼠生后不同发育时期即3,5,7,10,15,20,30,45 d卵巢的卵泡分布、形态结构及发育规律.研究结果表明,随着小鼠卵巢的发育,由最初的无皮髓质之分到皮髓明显可见,卵泡从只见聚集呈条索状到发育成原始卵泡、初级卵泡、次级卵泡,直至有腔的形成.从数量上看,原始卵泡逐渐减少,初次级卵泡逐渐增多,有腔卵泡数量也从无到有从少到多.卵巢由最初的无卵泡发育到有许多大小不等、处于不同发育时期的卵泡、大部分有腔样结构.在此发育过程中会伴有卵泡的闭锁.小鼠卵巢中各级腔前卵泡的分布具有区域性.     

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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