Marshall-White综合征10例临床分析

Marshall-White综合征临床少见,近几年来报道逐渐增多,自1994年以来国内已有20例报道[1-4]。为分析该综合征的临床特点,我们对协和医院皮肤科门诊1999年10月至2006年6月所诊治的10例该综合征患者进行分析,现报道如下。1临床资料10例患者中男性7例,女性3例。年龄19～37岁,平均年龄(29.4±5.5)岁。其中2例为学生,2例为公司职员,其余6例为工人。病程1～3年。所有患者均因无明显诱因出现上下肢白斑而就诊。皮肤科检查:四肢(以前臂及小腿伸侧为主,包括手背和足背)呈淡红色或暗红色斑,其上散在直径1～2cm苍白色斑点,边界清,形状不规则,似大理石样…     

表皮囊肿并发毛母质瘤

报告2例表皮囊肿并发毛母质瘤。例1,男,34岁。右侧大腿上方有一灰褐色肿块,直径4cm。皮损组织病理检查示表皮囊肿的囊壁不完整,囊肿中央和周边均为成片的影细胞,囊肿中央的影细胞内可见许多小而圆的嗜伊红角化中心,提示向毛母质分化,未见嗜碱性细胞。例2,女,20岁。右上臂暗蓝色、质硬的皮下结节,直径1cm。皮损组织病理检查示表皮囊肿与毛母质瘤同时存在于真皮内,相互独立,毛母质瘤内可见嗜碱性细胞和影细胞。2例患者均未出现加德纳综合征。     

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...     

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。     

骨质疏松症X线形态计量诊断方法初探

采用电子计算机图像分析技术,对骨质疏松症骨关节Ｘ线照片的测量与分析方法进行了研究,并编制了相应的计算机图像处理软件,针对Ｘ线照片的特点,运用图像处理技术对其进行预处理,并采用灰度比值测量,灰度直方图分析和纹理分析方法,对跟骨、椎骨的正常、退变增生和骨质疏松图像进行了测量分析比较,并绘制了相应的灰度直方图、三维纹理图和灰度投视图。结果表明,本方法在鉴别骨质疏松症、退变增生和正常骨质的Ｘ线方面有肯定的效果。     

早期先天梅毒1例

报告1例早期先天梅毒。患儿女,70d。发热、背部及四肢起暗红色斑伴脱屑1周。患儿及其父母快速血浆反应素环状卡片试验RPR均阳性(1∶16),梅毒微粒凝集试验TPPA阳性。给予水剂青霉素G5万U/kg·d,连续用药14d全身皮疹完全消退。     

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.     

孤立性毛发上皮瘤1例

患者女,80岁.因鼻右侧结节2年,渐增大半年,于2010年11月14日于我科门诊就诊.患者2年前无明显诱因右侧鼻翼上方出现一丘疹,因无自觉症状,未予治疗,近半年因增大而就诊.患者既往体健,家族中无类似病史,无外伤史.     

抗原致敏树突状细胞抗小鼠白念珠菌系统感染的实验研究

目的研究不同形态白念珠菌致敏的小鼠骨髓来源树突状细胞(DC)对免疫抑制小鼠白念珠菌系统感染的免疫保护作用及所对应的细胞因子改变。方法孢子相和菌丝相白念珠菌在体外分别致敏小鼠骨髓来源的DC(BM-DC),测定混合培养上清IL-12水平;尾静脉回输免疫抑制小鼠体内后,ELISA法测定各组小鼠脾IFN-γ及IL-4水平,并检测肾携菌量。结果DC孢子致敏组上清IL-12水平(380.2±104.13)pg/mL明显高于DC菌丝致敏组和对照组(P<0.05);而DC菌丝致敏组(74.79±23.47)pg/mL与单纯DC培养组上清IL-12水平(19.71±9.21)pg/mL差异无统计学意义(P>0.05)。孢子致敏DC、菌丝致敏DC分别过继免疫小鼠后,前者脾脏IFN-γ水平(269.43±17.34)pg/g明显高于其他组(P<0.05),IL-4水平(6.23±0.37)pg/g则明显低于其他对照组(P<0.05);荷菌一周后孢子致敏DC回输组小鼠肾携菌量(3.58±2.32)×102CFUs与健康小鼠荷菌组比较无统计学意义(P>0.05);其他各组间肾携菌量比较则有统计学意义(P<0.05)。结论尾静脉回输白念珠菌孢子体外致敏的小鼠骨髓来源DC可有效诱导免疫抑制小鼠抗白念珠菌保护性免疫。     

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.