Dialdehyde starch nanoparticles： Preparation and application in drub carrier

Dialdehyde starch nanoparticles (DASNP) were prepared by the redox reaction of NaIO4 and starch in water-in-oil microemulsion. IR spectrum showed that DASNP had aldehyde groups, and quantitative alkali consumption showed that its dialdehyde content was about (50±5)%. The average diameter of DASNP determined by SEM was about 100 nm. TGA-DTA showed that its thermal stability was better than starch nanoparticle (StNP) and dialdehyde starch (DAS). Its low biological toxicity was detected by cell experiment. Also the best mass ratio of doxorubicin (DOX) to combined DASNP detected by UV-VIS was 15 : 1, and the product was effective for controlled release of DOX. The cell experiment showed that the drug-carrier particle (DOX-DASNP) can release DOX for a long time and strengthened the effect of the anticancer drug. This work demonstrates that the DASNP, which has good thermal stability, small particle size, low biological toxicity, and slowly anticancer drug-releasing to strengthen drug effect, is a potentially useful carrier for anticancer drug.     

Eph受体家族和Ephrin-A5在NSCLCs中上调表达及其临床意义(英)

采用荧光实时定量PCR的方法在48个非小细胞肺癌组织以及配对的正常肺组织中检测Eph/ephrin 基因的mRNA水平.发现肺癌组织中EphB4, EphB3 和 ephrin-A5的表达水平与配对的正常肺组织相比分别上调了60%，81%和65%,并具有显著的统计学差异. 而且，统计学分析发现ephrin-A5的表达水平与肿瘤分型、转移、性别、吸烟以及诊断年龄等临床病理学参数之间存在显著的相关性.此外，EphA2的表达水平与肿瘤大小、家族遗传史以及诊断年龄之间也存在显著的相关性.总之，这些结果提示EphB4, EphA2, EphB3 和ephrin-A5 在肺癌的发生和发展过程中可能以一种单独或者协同的形式发挥作用.这些蛋白有可能成为研究和诊断肺癌的重要靶向基因.     

VEGF 和 PCNA在乳腺癌组织中表达的意义

为了探讨血管内皮生长因子（VEGF）和增殖细胞核抗原（PCNA）在乳腺癌组织中的表达及其与病理学分级关系，采用免疫组织化学SP法检测102例乳腺癌及其中48例癌旁正常乳腺组织中VEGF和PCNA的表达，实验结果显示VEGF在乳腺癌组织中的阳性表达率为84．31％，癌乳腺组织中则为12．50％，两者间具有高度显著性差异（P＜0．01），PCNA在乳腺癌组织中的阳性表达率为78．43％，癌旁正常乳腺组织中则为8．33％，它们之间的差异有高度显著性（P＜0．01），VEGF和PCNA的阳性表达率与乳腺癌病理学分级呈正相关，说明VEGF和PCNA阳性表达作为乳腺 辅助诊断指标。     

论环境公害案件的刑法规制——以水污染致癌的归责为切入点

水污染致癌作为环境公害犯罪的典型代表,应以以危险方法危害公共安全罪处罚。传统的条件说无法排除水污染以外的致癌因素,疫学因果关系要求被告人举证倒置,无法适用到中国的刑法领域。为达到"排除合理怀疑"的证明标准,需借助客观归责理论中的危险升高理论来进行环境公害案件的客观归责。现代刑法理论中的"故意"呈客观化趋势,可根据客观证据认定被告人主观上具有故意及证明被告人有不法认识可能性,从而完成环境公害案件的主观归责。     

不保留式留置针在宫颈癌化疗中对血管保护的对比研究

目的：通过应用不保留式留置针,观察其对宫颈癌患者化疗时血管的保护作用。方法：选取宫颈癌初次化疗患者60例,随机分为对照组和实验组各30例。结果：实验组患者静脉炎发生率和液体外渗情况均低于对照组。结论：不保留式留置针可以对化疗中得血管起到很好的保护作用,应在临床上推广使用。     

胃粘膜保护机制的研究

论述了胃粘膜的修复、胃粘膜上皮的更新和胃粘膜的微循环；阐述了巯基、一氧化氮、前列腺素及胃肠肽和胃粘膜保护作用。     

Introduction: integrins, dynamic cell receptors

Integrins are a family of adhesive receptors consisting of α- and β-subunits which attach cells together via adhesive protein ligands or bind cells to extracellular matrix. They are found on virtually all cell types and link the external ligand to the cytoskeleton of the cell. Integrins also act as signal transducers both from the outside of the cell to the interior and also inside-out. Their main functions are in recognition and in tight but regulated binding. The series of reviews presented here cover both basic aspects of integrin function, including signal transduction, snake disintegrins and structure and function of I-domains in some integrin α-subunits, as well as the role of integrins in diseases, cancer, inflammation and cardiovascular diseases. The search for suitable inhibitors of integrins for treatment of these diseases and future prospects for their use are also discussed.     

Ⅱ.胃癌、溃疡病及返流性胃炎的胃液成分谱图

结合内镜检查,从粘液池抽取清晨、空腹胃液,以其pH、游离酸、蛋白酶、粘液、胆汁酸及DNA值绘制直方图,对比胃癌、胃溃疡、十二指肠溃疡及胆汁(碱性)返流性胃炎各自的图型特征,并用微机进行多元直线回归分析。结果显示胃癌组胃液成分呈游离酸、蛋白酶、粘液含量降低,而胆汁酸含量升高,尤其是DNA含量居各组之首,与pH值之升高程度相齐,从而呈拱门状图型;胆汁返流组的胆汁酸含量最高,与DNA柱相平,亦与pH值的柱高相平,故呈三个高柱柱高相齐的特征性图型。消化性胃溃疡组的胃液成分图型与正常组基本相似,但胆汁酸与DNA柱有明显增高;而十二指肠溃疡组的突出表现为游离酸柱居各种胃病组之冠,蛋白酶和粘液含量亦相应较高。     

早期发现子宫颈癌9例临床分析

目的探讨子宫颈癌早期发现、早期诊断及早期治疗的影响因素和意义.方法结合9例早期子宫颈癌患者的临床资料分析和相关文献回顾.结果与结论阴道镜检查对宫颈癌早期发现意义重大,对可疑患者建议重复多次行病理组织活检;宫颈醋酸白色上皮、粗镶嵌和点状血管是原位癌三联征,对早期发现宫颈癌也具有重要意义.     

MVC方案治疗30例ⅢB—Ⅳ期肺腺癌临床观察

丝裂霉素、长春碱酰胺、顺铂（ＭＶＰ）方案是目前非小细胞肺癌化疗最常用方案之一，但它毒性大。卡铂和顺铂具有不同毒性，我们观察了用卡铂代替顺铂的ＭＶＣ方案治疗肺腺癌的近期疗效，应用方案为：丝裂霉素（ＭＭＣ）６～８ｍｇ／ｍ２ｉｖｄｌ、长春碱酰胺（ＶＤＳ）３ｍｇ／ｍ２ｉｖｄｌ，ｄ８和卡铂（ＣＢＰ）３００ｍｇ／ｍ２ｉｖｄｒｉｐｄｌ。３０例ⅢＢ～Ⅳ期肺腺癌（男性１０例，女性２０例，ⅢＢ期２０例，Ⅳ期１０例）的总有效率为４５％，ⅢＢ期有效率为５５％，Ⅳ期有效率为４０％，其中完全缓解３例（占１０％），部分缓解１２例（占４０％）。副反应轻，主要毒性反应为骨髓抑制，Ⅲ、Ⅳ级白细胞减少分别为１０％和３３％；Ⅲ、Ⅵ级血小板减少均为３３％；Ⅲ级血红蛋白减少３３％；未见Ⅳ级血红蛋白减少，未见肾毒性，其它副反应多数为Ⅰ～Ⅱ级，发生率也低。ＭＶＣ方案对肺腺癌特别是ⅢＢ肺腺癌有较好疗效，毒性小，无须水化，使用方便，患者依从性好，可在门诊使用，可作首选方案之一代替ＭＶＰ方案治疗肺腺癌