脐动脉血流S/D值异常对围产儿结局影响的探讨

目的探讨导致脐动脉血流S/D值？脐动脉S/D值？异常的相关因素及对围产儿结局的影响。方法回顾806例妊娠晚期经彩超检测脐动脉S/D值异常孕产妇的临床资料,总结分析导致脐动脉S/D值异常的相关因素及对围产儿结局的影响。结果导致脐动脉S/D值异常的原因主要有妊娠期高血压疾病、脐带缠绕或扭转、胎盘因素等,上述各种原因导致脐动脉S/D值异常程度不同,以妊娠期高血压疾病和胎盘因素更为明显,脐动脉S/D值（4以上者分别为47.65%、43.75%。脐动脉S/D值越高,早产、胎儿生长受限、新生儿窒息和围产儿死亡的发生率增加越明显（P（0.05）。结论围产儿结局不仅与脐动脉S/D值有相关性,更与导致脐动脉S/D值异常的原因有关,其可作为判断胎儿安危的可靠指标。如能尽早监测到脐动脉S/D异常及其相关因素,予对症治疗,加强胎儿监护,适时终止妊娠,胎儿预后则得以改善。     

一种基于B/S模式的PACS的研究与实现

我们采用 B/ S模式及其构建技术 ,给出了一个完整 PACS体系结构的设计方案 ,并介绍了在此体系结构基础上实现的 PACS各部分的功能应用。此 B/ S模式的 PACS具备安全、稳定、易维护、易升级等优点 ,可方便的实现远程医疗     

基于B/S模式的药物手册系统

本文阐述了网络的应用和开发在医院信息系统中的意义,比较了C/S结构和B/S结构在网络应用开发中的优缺点。在这个基础上提出了一个基于B/S模式的药物手册系统,重点介绍了该系统的设计方案,所采用的主要技术,以及该系统所能实现的功能。并对系统的可扩展性作了探讨。     

隐匿性乙型肝炎患者乙肝病毒preS/S基因突变分析

目的 隐匿性乙肝感染与严重慢性肝损伤的病毒学与免疫学机制尚未完全阐明,拟通过研究隐匿性HBV preS/S区基因变异,初步揭示隐匿性乙肝发生及其致慢性严重肝损伤的病毒学因素。方法 收集瑞金医院门诊及住院HBsAg阴性患者的血清,抽提DNA,利用巢式PCR方法对隐匿性感染进行检测;克隆阳性标本的preS/S区全长基因并测序分析,探讨其突变类型与严重慢性肝损伤的关系。结果 在全部468份HBsAg阴性血清中共检出隐匿性HBV感染69例,HBcAb单独强阳性组、HBeAb单独强阳性组、HBeAg单独阳性组、HBcAb与HBsAb同时强阳性组和5项指标全阴性组的检出率分别为16％、8.7％、36.4％、18.3％和0％。隐匿性感染患者血清HBV-DNA水平明显低于HBsAg阳性感染患者,隐匿性HBV preS/S区缺失突变、preS2基因M1I和Q2K突变,S基因Q129N/R/P、G185R和S210R突变的频率明显高于HBsAg阳性组。伴严重肝损伤的隐匿性感染较无严重肝损伤隐匿性感染患者在性别比例及血清HBV-DNA水平方面均有明显差异。伴严重肝损伤的隐匿性感染的HBV在preS2基因M1I和Q2K,S基因G185R和S210R的突变频率明显高于无严重肝损伤者,但 preS缺失和S基因Q129N/R/P的突变频率低于无严重肝损伤者。以伴严重肝损伤的隐匿性感染与HBsAg阳性严重肝损伤者相比,后者HBV-DNA水平明显高于前者,但preS2基因M1I和Q2K、S基因G185R和S210R突变的频率明显低于前者。结论 隐匿性感染与HBsAg阳性病人之间致慢性严重肝损伤的病毒学因素存在不同;preS2区M1I和Q2K以及S区G185R和S210R等突变对于隐匿性乙肝患者而言,可能是评价其是否进展为严重慢性肝损伤的有用指标。     

肾组织preS1/S2-Ag检测在乙型肝炎病毒相关性肾炎诊断中的作用

 目的：观察前S1/S2抗原（preS1/S2-Ag）及其它乙型肝炎病毒(HBV)抗原在HBV相关性肾小球肾炎（HBV-GN）患者肾组织中的表达,探讨它们在HBV-GN诊断中的应用价值。方法：回顾性收集2003年1月~2013年1月于中山大学附属第三医院肾内科住院的患者,并符合以下入组标准：血清学HBsAg阳性;有血尿、蛋白尿等临床表现;经肾组织活检病理诊断为肾小球肾炎病变;排除合并有系统性红斑狼疮、过敏性紫癜、糖尿病、丙肝等疾病。入组共49例。用免疫组织化学的方法对其肾组织石蜡切片进行preS1/S2-Ag、HBeAg、HBsAg和HBcAg检测。随机选取 5例HBsAg阴性的肾小球轻微病变患者,5例HBsAg阳性的非肾小球肾炎患者作对照。结果： 49例HBV感染合并肾小球肾炎患者中preS1/S2-Ag、HBeAg、HBsAg和HBcAg检出阳性率分别为32.7%（16例）、 388%（19例）、14.3%（7例）和46.9%（23例）,总阳性率为70.2%（36例）;preS1/S2-Ag主要表达在肾小管上皮细胞、肾小球系膜细胞和内皮细胞胞质内;其表达与肾组织HBcAg的表达呈正相关（r=0459, P<001）。5例HBsAg阴性的肾小球轻微病变患者,4种抗原均未检测到;5例HBsAg阳性的非肾小球肾炎患者有2例表达HBeAg,1例表达HBcAg,无1例表达preS1/S2-Ag及HBsAg。结论：HBV-GN患者肾组织中检测到preS1/S2-Ag; preS1/S2-Ag、HBeAg、HBsAg和HBcAg联合检测可提高HBV-GN的临床诊断率。     

188例脐血流S/D异常的临床分析

目的探讨应用彩色多普勒脐血流分析仪在监护胎儿宫内安危的临床价值。方法检测1789例妊娠28 ~42 w孕妇的胎儿脐动脉血流频谱,测定收缩期峰值与舒张期低值之比(S/D)。分析异常组(S/D≥3)188例及正常组(S/D<3=1601例其胎儿的妊娠结局。结果异常组的脐带绕颈,中重度妊高征,胎儿窘迫及IUGR的发生率均明显高于正常组(P<0.05~0.01=。结论高危胎儿其脐带血流缓慢,影响供血,表现S/D异常,提示S/D异常与胎儿宫内缺氧呈明显正常关系。     

脐血流S/D值在临床应用中的评价

本文应用 ADT-2200型彩色多普勒超声脐血流分析仪测定了106例妊娠36周～42周的胎儿脐动脉血流S/D值,根据S/D值的情况,对临床正确的选择分娩方式有一定的指导意义。     

基于C/S结构的卫生人才库系统的设计与开发

目的为了建立良好的卫生人才推举机制,促进卫生人才资源的有效开发和利用,加快卫生人才队伍建设,使南京地区卫生人才管理更高效。方法采用3层C/S(Client/Server)结构,使用VB.net和SQL Server 2012设计并开发了卫生人才库系统。结果开发出了一套界面人性化,信息查询和统计准确、快捷、灵活、方便,数据存储安全可靠的卫生人才库系统,管理员利用该系统可以方便快捷地完成卫生人才信息的录入、查询、统计和打印输出等工作。结论该系统已在多家单位推广试用,稳定可靠。该系统可以帮助政府更加清晰地了解卫生人才现状,为制订卫生人才建设规划和卫生系统评审工作提供了参考依据,实现了对卫生人才的高效管理,提高了医学人才的专业水平。     

基于B/S的空间对比敏感度测量研究

空间对比敏感度是一种比视锐度更全面的视觉功能评价指标,但由于其测量技术相对复杂至今无法广泛普及。目前,实现空间对比敏感度测量的技术方案有：Psychtoolbox + Matlab、VisionEgg + Python、C/C+〖KG-*3〗+等。但是这些技术方案或多或少的面临着软件授权、使用复杂、跨平台等问题。为解决这些问题,提出一种基于B/S架构的空间对比敏感度实现方法。前端使用HTML5 + JavaScript + CSS组合实现空间对比敏感度测量程序,服务器端采用轻型建站方案(如：Windows + IIS6 + 花生壳软件)。用户通过浏览器访问测量页面即可完成空间对比敏感度的测量。本研究采用的测量方法为正弦光栅随机出现在注视点左右两侧,空间频率选择0.5、1、2、4、8、16 cpd,每个空间频率的对比度调整120次,对比度以二进一的方式进行调整。三名被试参与了该实验,实验结果与其他研究组的结果一致。最后表明,提出的基于B/S架构的空间对比敏感度测量方案完全可行。该方法解决了软件授权费用、使用复杂、跨平台等问题,实现了客户端零维护、访问即测量的优点。本研究提出的技术方案将会给空间对比敏感度的普及带来很大推进作用。     

脐血流S/D比值检测联合胎心监护预测胎儿宫内缺氧的价值

目的 探讨超声检测脐动脉血流速度收缩期末以及舒张期末峰值（S/D）合并胎心监护技术预测胎儿宫内缺氧的价值。方法 回顾性分析2017年2月~2019年1月我院接受产检的68例产妇的临床资料,均接受脐血流检测S/D比值合并胎心监护方式,根据参考检测数据将所有产妇分成四组:A组（反应型与S/D＜3）23例,B组（反应型与S/D≥3）17例,C组（无反应型与S/D＜3）14例,D组（无反应型与S/D≥3）14例,分析胎心监护与脐血流S/D比值检测结果,比较四组胎儿宫内缺氧及Apgar评分、羊水粪染程度。结果 四组胎儿宫内缺氧及Apgar评分比较,差异有统计学意义（P＜0.05）;D组胎儿宫内缺氧率及新生儿窒息率高于其他三组,差异有统计学意义（P＜0.05）。A组、B组、C组羊水清亮率及羊水粪染程度比较,差异无统计学意义（P＞0.05）;D组羊水清亮率低于其他三组,羊水粪染程度高于其他三组,差异有统计学意义（P＜0.05）。结论 脐血流S/D比值检测联合胎心监护方式可提高胎儿宫内缺氧判定精准性,进而改善妊娠结局。     

Activation of the PI3K/Akt/mTOR/p70S6K Pathway is Involved in S100A4-induced Viability and Migration in Colorectal Cancer Cells

The S100 protein family member S100A4 regulates various cellular functions. Previous studies have shown that elevated expression of S100A4 is associated with progression and metastasis of colorectal cancer (CRC). However, little is known about whether and how S100A4 contributes to CRC development. In our present study, the elevated expression of S100A4 in CRC tissues compared to matched adjacent normal tissues was confirmed by immunohistochemistry, semi-quantitative RT-PCR and Western blot. Adenovirus-mediated S100A4 overexpression obviously enhanced viability and migration of CRC cells, which was detected by MTT assay and transwell assay, respectively. Additionally, S100A4 overexpression increased the phosphorylation levels of Akt, mTOR and p70S6K. These effects of S100A4 were abolished by treatment with either the specific PI3K/Akt inhibitor {"type":"entrez-nucleotide","attrs":{"text":"LY294002","term_id":"1257998346","term_text":"LY294002"}}LY294002, or the specific mTOR/p70S6K inhibitor rapamycin. Furthermore, overexpression of S100A4 resulted in upregulation of VEGF and downregulation of E-cadherin, which were strongly reversed by either {"type":"entrez-nucleotide","attrs":{"text":"LY294002","term_id":"1257998346","term_text":"LY294002"}}LY294002 or rapamycin. Altogether, our results demonstrate that activation of the PI3K/Akt/mTOR/p70S6K signaling pathway is involved in S100A4-induced viability, migration, upregulation of VEGF and downregulation of E-cadherin in CRC cells.     

基于B/S模式生理多参数远程监护系统的研制

研制了一种基于B/S模式的生理多参数远程监护系统。该系统由监护中心服务器、Internet网和客户端基于PC机的生理多参数监护仪构成。采用B/S工作模式,客户端通过PC机中的浏览器上网进入监护中心服务器网页,通过W eb页面下载安装ActiveX控件,利用ActiveX控件完成生理多参数的采集显示和远程传输。实验结果表明,该系统运行稳定可靠,实时性强,适于家庭和社区医疗保健中的生理多参数远程监护。     

Immunohistochemical localization of S protein/vitronectin in human atherosclerotic versus arteriosclerotic arteries

Summary The localization of S-protein/Vitronectin as deposits in arterial lesions and as a component of extracellular matrices was investigated by indirect immunofluorescence in ten atherosclerotic samples of carotid endarteriectomy compaired with ten arteriosclerotic temporal biopsies. Anti-C5b-9 neoantigens, anti-C3, anti-C3d, anti-H, anti-IgG and anti-IgM antibodies were applied on serial sections. In the atherosclerotic plaque, S-protein deposits were observed as irregular granules and spots in the fibrous cap and the internal part of the media at the vicinity of the plaque; they inconstantly colocalized with C5b-9 neoantigens. When present the SC5b-9 complexes were generally associated with cell remnants in the sclerotic matrix. In the temporal artery biopsies, S-protein was bound exclusively to the internal elastic lamnina in association with C3d, but was absent from the intimal fibrous thickening. S-protein was not detected as a diffuse component of the extra-cellular matrix of either musculo-elastic or muscular medias, but was clearly demonstrated in smaller arteries; this result suggests a differential distribution of S-protein along the aterial tree.     

外周血单个核细胞中乙型肝炎病毒前S/S基因变异的研究

目的研究外周血单个核细胞（ＰＢＭＣ）中乙型肝炎病毒（ＨＢＶ）包膜抗原基因变异的意义。方法收集１９例慢性乙肝患者的ＰＢＭＣ和配对血清,用ＰＣＲ扩增ＰＢＭＣ及血清中ＨＢＶ包膜基因片段（Ｓ,ｐｒｅＳ１,ｐｒｅＳ２）,并对其中各５例ＰＢＭＣ及配对血清中的ｐｒｅＳ１和ｐｒｅＳ２基因片段,分别进行核苷酸序列分析。结果Ｓ、ｐｒｅＳ１和ｐｒｅＳ２片段在血清和ＰＢＭＣ中的检出率,分别为１００％、９４７％、１００％和０、２６３％、２６３％。与ＨＢＶＡＤＲ序列比较,１０份标本ＨＢＶＤＮＡ核苷酸序列分析,发现２份ｐｒｅＳ１和３份ｐｒｅＳ２的核苷酸序列,没有发生改变;８份ｐｒｅＳ１和７份ｐｒｅＳ２的核苷酸序列,均发生了一个至多个位点的点突变。结论ＰＢＭＣ中存在的包膜基因不完整,因而不会形成完整的ＨＢＶ病毒颗粒,故不支持ＨＢＶ可潜伏于ＰＢＭＣ并发展成为体内ＨＢＶ再感染的来源。ｐｒｅＳ１点突变编码的氨基酸位点,集中在ａａ２１～４７区域,可能会影响ＨＢＶ的吸附和穿入,及组织亲嗜性的改变。ＨＢＶ亚基因片段在ＰＢＭＣ中,是否会影响细胞的功能,有待进一步研究。     

Behavioural differences between C57BL/6 and 129S6/SvEv strains are reinforced by environmental enrichment

Housing in enriched environment has been advocated as a means for controlled variation of environmental conditions in transgenic studies to explore interactions between genes and surroundings. In the present study, behavioural phenotypes of C57Bl/6 (B6) and 129S6/SvEv (129) mice, housed in either standard laboratory conditions or environmentally enriched conditions, were explored. Housing in enriched conditions increased exploratory activity in the plus-maze and reduced habituation in the locomotor activity test in B6 mice, whereas in 129 mice increased hot plate latencies and reduced aggression were observed. Compared to B6, 129 strain displayed lower exploratory activity in the plus-maze and locomotor activity test, longer hot plate latencies, spent more time immobile in the forced swim test and engaged more in social interaction. These behavioural differences between the two strains were reproducible independent of pre-experimental housing conditions. Moreover, environmental enrichment accentuated dissimilarities between the strains in the plus-maze, locomotor activity, hot plate and forced swim test. By contrast, strain differences in anxiety-like behaviours in the plus-maze test and in aggressive encounters in the resident-intruder test were not reproducible in mice housed in alternative environmental conditions, suggesting a strong contribution of environmental factors to the development of these phenotypes. It is concluded that the application of environmental enrichment in addition to standard housing conditions is a meaningful approach for testing reproducibility of behavioural findings within one laboratory.     

S100A8, S100A9 and the S100A8/A9 heterodimer complex specifically bind to human endothelial cells: identification and characterization of ligands for the myeloid-related proteins S100A9 and S100A8/A9 on human dermal microvascular endothelial cell line-1 cells

The natural ligands of the S100 EF hand proteins S100A8 and A9 [myeloid-related proteins 8 and 14] have long been searched for in order to further the understanding of the role of the S100A8/A9-expressing monocyte subpopulation in progressing inflammatory processes. We demonstrate that S100A8, S100A9 and the S100A8/A9 heterodimeric complex bind to human dermal microvascular endothelial cell line (HMEC)-1 with an increasing binding capacity progressing from S100A8 < or = S100A9 < or = S100A8/A9. Similar results were obtained in the apolipoprotein E knockout mouse model, where preferably recombinant S100A9 but no S100A8 bound to the endothelium of the aorta ascendens. The binding of the S100A8/A9 heterodimer complex to activated HMEC-1 is specific as demonstrated by a dose-responding and satiable binding curve and the competition of FITC-labeled versus unlabeled protein. The protein character of the binding site was proven by treatment with trypsin. S100A8/A9 binding to HMEC-1 is inducible by lipopolysaccharide and tumor necrosis factor-alpha, and in the presence of calcium. A 163-kDa protein was isolated from a cell lysate of activated HMEC-1 cells using an affinity-chromatography protocol. The endothelial cell-associated ligand proteins isolated by the use of the S100A9 monomer and the S100A8/A9 dimer were subjected to mass spectrometry for protein identification. Clearly, alpha(2)-macroglobulin was identified as a binding partner for the S100A9 monomer, whereas no protein could be identified from the database for the ligand of the S100A8/A9 dimer.     

细胞压积、脐动脉S/D与子痫前期胎儿生长受限的相关性研究

目的探讨细胞压积、脐动脉S/D与子痫前期胎儿生长受限的相关性。方法将2008-2009年在我院住院分娩的子痫前期病例（单胎妊娠）分为轻度及重度子痫前期两组,分析其孕周、红细胞压积（HCT）、脐动脉S/D与胎儿生长受限的相关性。结果重度子痫前期组中的未足月妊娠、HCT≥0.35,脐动脉SD≥3.0的FGR发生明显高于轻度子痫前期组,统计结果有统计学差异（P〈0.05）。轻、重两组子痫前期在HCT〈0.35、脐动脉SD〈3.0情况下FGR发生率无统计学差异（P〉0.05）。结论未足月妊娠、HCT≥0.35及脐动脉SD≥3.0时与子痫前期合并FGR的发生密切相关。加强对这些指标的监测可及时诊治子痫前期中的FGR,避免不良围产儿事件的发生。     

mTOR/S6K1在2型糖尿病Wistar大鼠肝脏和肌肉的表达

目的应用Wistar大鼠制备2型糖尿病的动物模型,观察肝脏和肌肉组织mTOR/Rps6kb1(S6K1)表达的变化。方法雄性Wistar成年大鼠高脂饲料喂养8周,腹腔注射链脲佐菌素(STZ)25mg/kg,注射后第4周检测空腹血糖、胰岛素水平,对结果进行统计分析;解剖大鼠,取肝脏和肌肉组织,应用RT-PCR和Western blot检测肝脏和肌肉组织mTOR及S6K1表达。结果与正常对照组比较,模型组大鼠血糖值升高(0.05),胰岛素水平下降(0.05),肝脏和肌肉中的mTOR/S6K1蛋白和mRNA表达均升高(0.05)。结论 mTOR及S6K1在2型糖尿病大鼠肝脏和肌肉过表达,提示其可能参与2型糖尿病发病过程。