肝癌病人血浆和癌组织中血栓调节蛋白的检测

目的　检测肝癌病人血浆和肝癌组织中血栓调节蛋白 (TM )的表达 ,探讨TM与肝癌临床病理特征的关系。方法　用酶联免疫吸附夹心法检测 45例肝癌和 6例肝良性占位病人手术前后的血浆TM水平 ;用免疫组织化学法检测肝癌及肝良性占位组织中的TM蛋白表达水平。结果　术前肝癌组血浆TM水平 ( 10 .2± 5 .7)ng/mL明显高于肝良性占位组 ( 6.1± 2 .2 )ng/mL和正常人对照组 ( 5 .7± 1.0 )ng/mL ,P <0 .0 5 ;术前TM血浆水平肝癌伴门静脉癌栓组 ( 6.9± 4.5 )ng/mL和多发肝癌结节组 ( 8.1± 4.6)ng/mL明显低于无门静脉癌栓组( 11.4± 5 .6)ng/mL和单发肝癌结节组 ( 11.5± 5 .9)ng/mL ,P <0 .0 5 ;40例肝癌病人肝癌切除术前TM水平( 10 .8± 5 .3 )ng/mL与肝癌切除术后 ( 7.6± 4.2 )ng/mL相比差异显著 ,P <0 .0 5。肝良性占位组术前与术后相比差异无显著性 ,P >0 .0 5。肝癌组织中TM蛋白表达阳性的病人术前血浆TM水平明显高于TM表达阴性者 ,P <0 .0 5 ;而术后血浆TM水平两者则无显著性差异 ,P >0 .0 5。结论　肝癌病人血浆中TM水平升高 ,TM水平的高低与门静脉癌栓的形成有关     

Agilent 2100 Bioanalyzer在人乳头瘤病毒检测中的应用

目的：探讨Agilent2100Bioanalyzer芯片分析系统（简称Bioanalyzer)在人乳头瘤病毒（HPV）的PCR检测和分组中的应用。方法：先分别进行通用引物介导PCR（GP－PCR）和型特异性引物介导PCR，扩增HPV高保守区（L1区）的共同序列和各型（包括HPV6，11，16和18型）的特型性序列，然后分别用常规的琼脂糖凝胶电泳技术和Bioanalyzer对PCR产物进行检测，并比较两种检测方法的准确度，重复性和灵敏度。结果：Bioanalyzer在确定片段长度时的准确度和重复性比琼脂糖凝胶电泳高，前者的准确度在95％以上，后者仅为85％，Bioanalyzer的检测灵敏度比琼脂糖凝胶电泳高100倍，结论：Bioanalyzer芯片分析系统结合PCR方法可对HPV进行特异，准确，稳定，灵敏的检测和型别鉴定，具有重要的推广价值。     

急性软脑膜微循环障碍实验模型的研究

本文报道应用高分子右旋糖酐制成软脑膜微循环障碍的动物实验模型。软脑膜微循环障碍模型的标志;软脑膜微血管血流速度减慢,血液流态呈粒状流或絮状流,血细胞聚集。 将98只家兔分成甲、乙二组。甲组38只,静脉注射平均分子量为25万的高分子右旋糖酐,乙组60只,静脉注射平均分子量为49万的高分子右旋糖酐。实验结果发现,甲组38只家兔仅28只可复制成软脑膜微循环障碍的实验模型,模型复制成功率为73.6％;乙组60只家兔,59只可形成软脑膜微循环障碍实验模型,成功率为98.3％。本实验证明复制动物模型以49万分子量的高分子有旋糖酐为宜。 本实验模型可用于脑微循环障碍和改善脑微循环药物的研究工作。     

Effective intracellular delivery of oligonucleotides in order to make sense of antisense.

For more than two decades, antisense oligonucleotides (ODNs) have been used to modulate gene expression for the purpose of applications in cell biology and for development of novel sophisticated medical therapeutics. Conceptually, the antisense approach represents an elegant strategy, involving the targeting to and association of an ODN sequence with a specific mRNA via base-pairing, resulting in an impairment of functional and/or harmful protein expression in normal and diseased cells/tissue, respectively. Apart from ODN stability, its efficiency very much depends on intracellular delivery and release/access to the target side, issues that are still relatively poorly understood. Since free ODNs enter cells relatively poorly, appropriate carriers, often composed of polymers and cationic lipids, have been developed. Such carriers allow efficient delivery of ODNs into cells in vitro, and the mechanisms of delivery, both in terms of biophysical requirements for the carrier and cell biological features of uptake, are gradually becoming apparent. To become effective, ODNs require delivery into the nucleus, which necessitates release of internalized ODNs from endosomal compartments, an event that seems to depend on the nature of the delivery vehicle and distinct structural shape changes. Interestingly, evidence is accumulating which suggests that by modulating the surface properties of the carrier, the kinetics of such changes can be controlled, thus providing possibilities for programmable release of the carrier contents. Here, consideration will also be given to antisense design and chemistry, and the challenge of extra- and intracellular barriers to be overcome in the delivery process.     

Electrochemical polymerization of 3-phenylthiophene

Poly (3-phenylthiophene) (P3PhT) films have been electrochemically synthesized by direct oxidation of 3-phenylthiophene in the electrolyte of pure boron trifluoride diethyl etherate (BFEE). The oxidation potential of the monomer was measured to be 1.29 V (vs. SCE), and about 0.15 V lower than that measured in a neutral medium of acetonitrile. Free-standing P3PhT film with tensile strength of 32–40 MPa has been obtained for the first time. The morphology and the structure of the polymer film have been studied by scanning electron microscopy, infrared and Raman spectroscopies. Raman spectral results demonstrated that the doping level of the P3PhT film increased with film thickness during electrochemical growth process.     

安氏Ⅱ类错(牙合)畸形对青春期面部骨轮廓发育的影响

目的:研究安氏II类错畸形对青春期面部骨轮廓发育的影响。方法:收集安氏II类错畸形的成人患者和青少年患者共362例。摄取头颅定位侧位片及头颅定位正位片。对面高、面宽等19项测量项目做比较分析及t检验。结果:①安氏II类青少年患者与正常青少年相比,下颌基骨长度、下颌长度较小,但无统计学差异。②安氏II类成年患者与正常成年人相比,下颌基骨长度、下颌长度有显著性差异。③安氏II类患者下颌骨在青春发育期有向前、向上旋转的趋势。结论:安氏II类错畸形患者经过青春期发育,使面部畸形程度更加严重。本研究得出安氏II类错畸形对青春期面部骨轮廓发育的影响,对正颌外科和正畸治疗具有参考意义。     

(足母)甲瓣切取术后供区创面覆盖的方法选择

目的探讨[足母]甲瓣切取术后供区修复的方法，减少供区并发症的发生。方法对[足母]甲瓣切取术后25例[足母]趾创面，采用三种不同的方法处理，其中采用游离皮瓣移植修复9例，采用足背或足底局部带蒂皮瓣修复12例，采用第二足趾皮甲瓣修复4例。结果移植皮瓣全部成活，术后平均随访10个月，其中2例游离皮瓣在术后6个月进行二期削薄，外观和功能满意。第二趾皮甲瓣修复后的功能在3种方法中效果最好。结论根据[足母]甲瓣供区的缺损情况，采用不同的手术方法进行即时修复，能最大限度减少供区并发症的发生。     

高职高专学生学业不良的成因及矫正对策

相对于普通高校，高职高专学校中学业不良学生的比例更高，管理的难度更大。因此，分析、研究学生学业不良的成因，并采取科学有效的措施予以矫正，对于促进学生健康成长，全面提高教育教学质量，具有积极的意义。