Solid Pseudopapilllary Tumor of the Pancreas： a Case Report

Solid pseudopapillary tumors （SPT） to be a rare low-grade malignancy of the pancreas are considered that mainly appears in young women. It accounts for less than 1% of all pancreatic neoplasms and is pathologically distinctive from other types of pancreatic cancers. Curative resection is the optimal choice for SPT and the 5-year survival rate of SPT is about 95%. Here we report a case of a young girl who presented with this rare pancreatic tumor.     

垂体腺瘤组织中ASPP2 mRNA和Ki-67蛋白的表达

目的:研究垂体腺瘤组织中ASPP2基因mRNA和Ki-67抗原的表达情况.方法:收集垂体腺瘤手术标本71例(其中侵袭性垂体腺瘤36例,非侵袭性垂体腺瘤35例; 病理分型包括生长激素腺瘤14例,泌乳素腺瘤13例,促肾上腺皮质激素腺瘤5例,促性腺腺瘤7例,无功能腺瘤10例,多激素腺瘤22例),采用RT-PCR方法检测垂体腺瘤标本中ASPP2基因mRNA的表达情况,采用免疫组织化学方法检测垂体腺瘤石蜡切片中Ki-67抗原的表达情况,并分析二者的相关性.结果:71例垂体腺瘤手术标本均有ASPP2基因mRNA和Ki-67表达,不同病理类型间ASPP2基因mRNA表达差异无统计学意义(P>0.05);但不同病理类型间Ki-67 LI差异有统计学意义(P<0.05).非侵袭垂体腺瘤和侵袭性垂体腺瘤组织中ASPP2 mRNA的表达和Ki-67 LI差异均有统计学意义(P<0.05);ASPP2基因表达水平与Ki-67 LI呈负相关(r＝-0.256,P<0.05).结论:人垂体腺瘤组织中ASPP2基因的表达与其细胞增殖活性和侵袭性行为有关,可以作为判断垂体腺瘤侵袭性和预测复发的有效临床检测指标.     

医院流程再造及临床路径实施中的量化研究

本文通过对医院流程化管理及临床路径研究过程中影响或贯穿整个过程的信息,提出精确化数据化定量分析,通过对个别流程的数据收集,利用计算机软件模拟,以达到揭示、改进流程瓶颈的目的。     

The Origin of Neointimal Smooth Muscle Cells in Transplant Arteriosclerosis from Recipient Bone-marrow Cells in Rat Aortic Allograft

In order to investigate the origin of neointimal smooth muscle cells in transplant arterio- sclerosis in rat aortic allograft, sex-mismatched bone marrow transplantation was performed from male Wistar rats to female Wistar rats. Four weeks after transplantation, the aortic transplant model was established by means of micro-surgery in rats. The recipients were divided into 4 groups: female Wistar-female Wistar aortic isografts, female SD-female Wistar aortic allografts, male SD-male Wis- tar aortic allografts, female SD-chimera Wistar aortic allografts. Eight weeks after transplantation, aortic grafts were removed at autopsy and processed for histological evaluation and immunohisto- chemistry. The results indicated that excessive accumulation of α-SMA-positive smooth muscle cells resulted in significant neointima formation and vascular lumen stricture in rat aortic allografts. Neointima assay revealed that the neointimal area and NIA/MA ratio of transplanted artery were sig- nificantly increased in all of aortic allograft groups as compared with those in aortic isograft group (P<0.01). Neointimal smooth muscle cells were harvested from cryostat sections of aortic allograft by microdissection method. The Sry gene-specific PCR was performed, and the result showed that a dis- tinct DNA band of 225 bp emerged in the male-male aortic allograft group and chimera aortic al- lograft group respectively, but not in the female-female aortic allograft group. It was suggested that recipient bone-marrow cells, as the origin of neointimal smooth muscle cells, contributed to the pathological neointimal hyperplasia of aortic allograft and transplant arteriosclerosis.     

正交试验优选红藤凝胶的提取工艺

目的:优选红藤凝胶的提取工艺。方法:以芍药苷和盐酸小檗碱的含量作为考察指标,采用L9(34)正交试验考察乙醇浓度、提取次数、乙醇用量、提取时间4个因素,以确定最佳提取工艺。结果:最佳提取工艺为红藤、赤芍、黄柏、忍冬藤、败酱草等中药,加80%乙醇,加6倍量溶剂回流提取3次,每次1.5h。结论:该优化工艺操作简单,结果稳定,适用于工业生产。     

平阳霉素治疗患儿静脉-微静脉畸形325例疗效观察

目的：总结平阳霉素（PYM）瘤内注射治疗患儿静脉-微静脉畸形（混合型血管瘤）的疗效。方法：选取1998年1月至2005年1月，用PYM注射治疗患儿静脉-微静脉畸形325例（389个瘤体），其中男132例，女193例，男女之比为1：1．46，年龄1个月-12岁，其中6个月以内175例，占53．85％。7-10天注射1次，3—5次为1个疗程。结果：经6个月-7年随访，治愈162例（占49．85％），基本治愈124例（占38．15％），好转34例（占10．46％）。治愈和基本治愈率为88．00％，有效率为98．46％。结论：PYM治疗静脉-微静脉畸形疗效高，疗程较短，是一种简便、安全的有效方法。     

传染性单核细胞增多症外周血B淋巴细胞CD21的表达

目的　探讨外周血B淋巴细胞CD2 1 的表达在传染性单核细胞增多症 (IM)发病机制中的作用。方法　用流式细胞术测定IM患儿 38例、新生儿 1 4例、对照组 1 4例的外周血B淋巴细胞CD2 1 表达水平。结果　IM组外周血中B淋巴细胞比例、表达CD2 1 B淋巴细胞数及B淋巴细胞表达CD2 1 位点均高于 2个对照组 (P <0 .0 5 ,P <0 .0 1 )。结论　EB病毒 (EBV)感染可诱导B淋巴细胞持续高表达CD2 1 ,以利于病毒进入细胞并导致潜伏型感染和增殖性感染。     

医学教学资料库和多媒体网络考试系统的研制和应用

信息时代的到来使医学教育现代化成为教育改革的当务之急.本研究在应用计算机多媒体技术建立医学教学资料库及应用计算机多媒体技术和网络通讯技术建立网络考试系统等医学教学的技术改革方面,进行了初步的实践和探索.     

来源于CD14+的树突细胞分化过程中膜脂分子运动及蛋白质构象的变化

目的：树突细胞（Dendritic Cells,DC）是免疫系统中功能最强大的抗原呈递细胞（Antigen Presenting Cells,APC）,它具有独特的向T细胞呈递抗原的能力.为了研究DC分化过程中细胞膜性质和细胞蛋白质构象的变化,以对其基本生物学特性有更好的理解.方法：用免疫磁珠从人外周血单个核细胞分离得到CD14＋单核细胞,用人GM-CSF和IL-4诱导其分化为未成熟的DC后,加入TNF-α使其成熟.用荧光偏振和傅里叶变换红外光谱技术研究各发育阶段细胞膜流动性及其蛋白二级结构的变化.结果：在CD14＋单核细胞分化为未成熟和成熟DC过程中,细胞膜的流动性和蛋白质的α-螺旋、β-片层、β-弯曲和无规卷曲等二级结构均发生了明显改变.结论：成熟DC的膜脂分子运动比单核细胞和未成熟DC更为活跃,同时蛋白质的构.象的主要成分也显著减少.