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.     

FGFR2Ⅲc及其突变型腺病毒对小鼠乳腺癌作用的研究

目的:研究FGFR2Ⅲc及其突变型腺病毒对小鼠乳腺癌的作用.方法:确定腺病毒颗粒Ad、AdFGFR2Ⅲc及Ad-FGFR2ⅢcS252W感染4T1细胞的最佳MOI,并通过RT-PCR检测外源目的基因的表达.建立BALB/c小鼠的4T1乳腺癌模型,在此模型上原位注射重组腺病毒颗粒治疗17天,观察其对小鼠肿瘤的作用.结果:...     

复旦抗癌女教师健康反思

复旦大学32岁的海归博士后、一个两岁男孩的妈妈于娟,2009年12月,被诊断为乳腺癌晚期,并发生了骨转移。一年多后,于娟把自己患癌症前的生活写成《癌症日记》,反思自己的不健康生活习惯,并发到了博客上,希望用自己的经历来给大家一个警醒。     

HIF-1α表达对人乳腺癌细胞侵袭转移能力的影响

为研究缺氧诱导因子-1α（HIF-1α）在人乳腺癌细胞中的表达及其与乳腺癌细胞侵袭转移能力的相关性,采用在培养基中加入CoCl2模拟化学缺氧培养细胞,RT—PCR和Western-blot、免疫细胞化学检测HIF-1α在人乳腺癌细胞MCF-7和MDA—MB-231中mRNA水平和蛋白质水平在缺氧前后的表达差异,及Millicell小室人工重组基底膜侵袭迁移实验检测缺氧前后两株细胞侵袭迁移能力的改变．结果发现：缺氧后,两株细胞的HIF-1α mRNA水平和蛋白质水平均较缺氧前增高（p〈0．01）,MDA—MB-231和MCF-7之间有显著差异（p〈0．01）;MDA—MB-231的侵袭转移能力明显增加（p〈0．01）,MCF-7的侵袭转移能力略有增加（p〈0．05）．表明缺氧上调HIF-1α转录及蛋白表达,进而促进乳腺癌细胞的侵袭转移能力．     

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。     

术前干预对乳腺癌根治术患者心理状态的影响

目的探讨术前护理干预对乳腺癌冰冻加根治术患者心理状态的影响。方法对照组采取常规护理,干预组在术前及等待冰冻结果时给予护理干预,记录2组患者术前1d、入手术室初及根治术麻醉前心率、呼吸及平均动脉压。结果对照组根治术麻醉前心率、呼吸及平均动脉压显著升高;干预组在干预前后心率、呼吸及平均动脉压无明显改变。结论术前护理干预对缓解乳腺癌冰冻加根治术患者焦虑情绪及心理压力具有重要作用。     

Primary leiomyosarcoma of the nipple-areola complex： Report of a case and review of literature

Primary leiomyosarcoma of the nipple-areola complex is extremely rare. Less than ten such cases have been reported in English literature so far. Herein we describe a 52-year-old female presenting with a 1.5 cm×1. 1 cm×0.7 cm nodular lesion over her left nipple, and leiomyosarcoma was proved by pathological examination of the excised specimen. Positron emitted tomogram （PET） revealed no abnormal signal other than the primary site. Microscopically, this poorly circumscribed tumor was composed of interlacing bundles of smooth muscle cells with bizarre and pleomorphic nuclei, as well as prominent nucleoli. Its mitotic count was up to 7 mitoses per 10 high power fields （HPF）. Immunohistochemical study of tumor cells revealed positive stain for α-smooth muscle actin and vimentin; and negative for cytokeratin, CD34 and S-100. Left simple mastectomy was undertaken and no residual mass lesion was noted on the resected specimen. Related literatures about the diagnosis and treatment for breast leiomyosarcoma will be presented here.     

乳腺癌干细胞与小分子RNA研究

据国家自然科学基金委员会2007年12月8日报道，我国中山大学附属第二医院的宋尔卫课题组对调控乳腺癌干细胞特性的小分子RNA的功能开展研究，其论文发表在12月14日美国的Cell上。该项目首次提出低剂量化疗压力可富集乳腺癌干细胞，并采用基因芯片等分子生物学技术阐明小分子RNA的let-7对乳腺癌干细胞“干性”的分子调控机制，为分子靶向治疗奠定基础。     

我国青年女性乳腺癌的临床和病理特点

目的 探讨我国青年女性乳腺癌的临床和病理特点.方法 全面收集国内关于青年女性乳腺的临床研究论文.青年女性(≤35岁)乳腺癌患者为研究组,＞35岁以上女性乳腺癌患者为对照组.结果 共检索符合纳入标准及排除标准的论文8篇,包括4881例病例,研究组发病至就诊时间明显长于对照组.采用随机效应模型进行meta分析,两组的TNM分期、腋窝淋巴结转移、免疫组化有显著差异,病理分型、5年生存率无明显差异.结论 青年女性乳腺癌虽然更多发生腋窝淋巴结转移,TNM分期较晚,ER阳性率低,但经积极治疗,可能取得与中老年女性乳腺癌一样的效果,年龄不是影响预后的独立因素.