梭形细胞血管内皮瘤

报告1例梭形细胞血管内皮瘤.患者男,16岁.右跖部结节10余年,相继波及左足和双小腿下段,无自觉症状.皮损组织病理检查可见真皮中下层由海绵状血管腔隙和梭形细胞组成的团块.依据临床表现和组织病理学改变,诊断为梭形细胞血管内皮瘤.     

胃粘膜肠上皮化生的研究——肠化的形态学、组织化学及其与胃癌的关系

本文对84例胃手术标本进行了胃粘膜肠化的研究,通过光镜观察及粘液组化染色发现肠化,尤其是分泌硫酸粘液的不完全型大肠化生与肠型胃癌的关系甚为密切。观察到一种吸收上应性肠化,发现癌旁与非癌旁肠化腺在组织结构和细胞学方面均有一定差异。对Jass关于肠型和胃型胃癌的划分标准进行了修正和补充。井对柱状粘液细胞的转归和意义进行了讨论。     

浅谈皮肤科来华留学研究生培养的心得体会及建议

来华留学生培养是中国高等教育的重要组成部分,是提高中国高等教育的国际知名度、中国大学国际化程度的环节之一.皮肤科留学研究生的培养在来华留学生中有一定的需求,但大多数以东南亚来源国和非洲国家为主,其文化背景、医学基础知识差异大,很多不懂中文,缺乏统一的英文或英汉皮肤性病学教材等,这些都给带教老师带来了较大的挑战.该文分享...     

分形和分形维数及其在医学形态学领域的应用

自１９６７年美籍法国数学家Ｍａｎｄｅｌｂｒｏｔ在《科学》杂志上发表“英国的海岸线有多长？”的论文［１］，分形（ｆｒａｃｔａｌｓ）的概念已开始萌芽生长，１９７７年他出版了奠基性的《分形：形、机遇与维》和１９８２年出版的《自然界的分形几何学》［２，３］，...     

一毛囊角化病家系ATP2A2基因突变检测

目的:检测一毛囊角化病家系的ATP2A2基因突变。方法:提取2例患者外周血DNA,采用聚合酶链式反应及DNA直接测序方法,检测患者ATP2A2基因突变。结果:该家系患者及其两女儿存在ATP2A2基因的碱基缺失突变,即ATP2A2基因第10个外显子1220位开始缺失了AA 2个碱基。而该家系中其他正常者未发现此突变。结论:ATP2A2基因第10个外显子1220delAA突变可能与该家系患者临床表型有关。     

自体表皮移植配合窄波UVB照射治疗稳定期白癜风的临床疗效分析

我们在自体表皮移植术后10天的白斑区,配合窄波UVB照射,每周照射3次,3个月为1疗程。结果表明局部窄波UVB照射,可加速存活皮片的复色率和色素的扩展,与单纯采用自体表皮移植相比,明显提高了疗效(P<0.01)。其疗效与治疗时间、病程、部位、分型有关。节段型与局限型治疗效果无显著差异,泛发型效果较差;面部、颈部效果优于其他部位,以肢端效果最差;病程越短效果越好,病程越长效果越差。     

内皮素对黑素瘤A375细胞转化生长因子-β1及磷酸化Smad 3蛋白表达的调节

Objective To investigate the effects ofendothelin-1 (ET-1) and endothelin-3 (ET-3) on the expression of transformation growth factor-beta 1 (TGF-β1) and phosphorylation of Smad 3 in malignant melanoma cell line, A375. Methods Cultured A375 cells were classified into 5 groups, i.e. control group (no stimulation), ET-1 group (stimulated with ET-1), ET-1+BQ123 group (treated with ET-1 and BQ123),ET-1 + BQ788 group (treated with ET-1 and BQ788), ET-3 group (stimulated with ET-3), to receive different stimulation. The working concentrations were 0, 0.1, 1, 10, 100 nmol/L for ET-1 and ET-3, 10 μmol/L for BQ123 and BQ788. After another 12- and 24-hour culture, ELISA, RT-PCR and Western blot were used to detect the expression of TGF-β1 protein and mRNA as well as phosphorylated Smad 3 (P-Smad 3). Results The expression of TGF-β1 in A375 cells was up-regulated by ET-1, but down-regulated by ET-3, and both of the effects were in a concentration-dependent manner. Under the stimulation with ET-1 and ET-3 of 100 nmol/L, the level of TGF-β1 reached 1289.38 ± 89.42 ng/L per 105 cells and 85.09 ± 9.37 ng/L per 105 cells, respectively, significantly different from that in unstimulated cells (both P < 0.05). BQ123 signifi-cantly blocked the up-regnlatory effect of ET-1 on the expression TGF-β1 protein(P < 0.05), but BQ788 had no significant influence on the effect, so was the case with TGF-β1 mRNA. Western blot revealed that ET-1significantly elevated the expression of P-Smad 3 in A375 cells (P <0.05), and the elevation was significantly inhibited by BQ123, but not by BQ788. The expression of P-Smad 3 was statistically decreased by ET-3 in A375 cells (P <0.05). Conclusions The expression of TGF-β1 could be enhanced by ET-1, but suppressed by ET-3. It is likely that endothelin receptor A mediates the phosphorylation of Smad 3 induced by ET-1.     

Study on the role of interleukin-4 in experimental murine systemic candidiasis

Candida albicans is the most common oppor-tunistic fungal pathogen,and systemic Candidiasis isgetting increasingly dangerous to patients with im-mune dysfunctions[1] . Interleukin- 4(IL- 4) ,mainlysecreted by activated CD 4T cells,can enhance thedifferentiation from Th0 cells to Th2 cell[2 ] ,inhibitthe differentiation from Th0 cells to Th1cells and theability of neurtrophils and macrophages to phagocy-tose or kill Candida albicans[3 ,4 ] . The detection ofthe level of IL- 4secreted by i…     

男性非淋病性尿道炎患者支原体的检测和对10种抗菌药物的敏感性试验

为了解解脲支原体和人型支原体在男性非淋病性尿道炎(NGU)中的致病作用和它们的体外药物敏感状况,运用微量肉汤稀释法对支原体进行10种抗菌药物的敏感性测定。在268例疑为NGU的男性患者中,85例（31.7%）支原体培养阳性,其中UU感染71例（26.5%）,MH感染4例（1.5%）,MH+UU感染10例（3.7%）,85例阳性患者的支原体株对10种抗菌药物的高度敏感性依次为交沙霉素（81.2%）、克拉霉素（73.0％）、司巴沙星（70.6%）、罗红霉素（67.1%）、阿奇霉素（55.3%）、强力霉素（28.2%）、美满霉素（16.5%）、氧氟沙星（15.3%）、环丙沙星（14.2%）、培氟沙星,发现11株对四环素类和喹诺酮类（除司巴沙星外）交叉耐药。认为支原体的定期耐药性监测,对临床用药有重要意义。     

40例成人和28例儿童麻疹比较分析

对1996年2月～1999年9月我院收治的40例成人麻疹和28例儿童麻疹进行了比较分析,结果如下: 1 临床资料 40例患者中,男21例,女19例,18～20岁9例,～30岁29例,3l岁和34岁各1例。儿童组28