颈深筋膜及筋膜间隙的计算机三维重建

目的 :对颈深筋膜及深筋膜间隙进行计算机三维重建以显示其立体结构。方法 :用生物塑化技术制作薄层断面标本 ,在SGI工作站上 ,采用双线提取筋膜及间隙轮廓的方法对颈深筋膜及其间隙进行了三维重建。结果 :重建出咽后间隙、颈动脉间隙和内脏间隙及颈部的大血管和重要器官。重建结构均能单独显示、任意搭配显示或总体显示 ,可在三维空间位置上绕任意轴旋转任意角度。结构 :用双线法提取筋膜及间隙轮廓 ,能重建出筋膜间隙并能同时清楚显示间隙内的结构 ,为筋膜间隙的计算机三维重建提供了一种新的方法     

骨形成蛋白-7对人肾小管上皮细胞株HK-2凋亡的影响

研究不同浓度的骨成形蛋白 7(BMP 7)对人近曲小管上皮细胞株HK 2凋亡的影响并初步探讨其可能的机制。应用Hoechst 332 5 8荧光染色、DNA电泳检测凋亡细胞的形态学和生化改变 ,流式细胞仪定量检测细胞的凋亡率 ,并观察凋亡特异性蛋白酶Caspase 3活性变化的情况。结果显示 ,HK 2细胞加入 1 0ng/mlTGF β处理 2 4h后 ,可明显抑制细胞生长并诱导细胞凋亡 ,呈现明显的凋亡形态学改变 ,胞核或核质内可见浓度致密的颗粒状荧光 ,DNA电泳呈现典型的“梯形条带” ,而预先加入 5 0ng/ml、 1 0 0ng/mlBMP 7共处理 2 4h后 ,可减轻TGF β对细胞的抑制作用 ,凋亡细胞亦减少 ,Caspase 3蛋白酶活性明显下降 ,细胞凋亡率下降。提示BMP 7对人肾小管上皮细胞凋亡的具有抑制作用 ,可能是通过抑制Caspase蛋白酶活性而实现的     

以腓动脉终末穿支为蒂的皮瓣应用解剖

在33侧成人标本上,观察了以腓动脉的终末穿支为蒂的外踝上皮瓣血供。腓动脉终末穿支在外踝上方5.9cm 处,穿出骨间膜,外径为1.7mm,本干长为0.7cm,分为升支和降支、有91%的个体,以穿动脉的升支为蒂,设计为外踝上皮瓣:以穿动脉的降支为蒂,设计为足外侧皮瓣。在9%的个体中,腓动脉穿支细小,不能作为皮瓣的血管蒂,只能改用外踝前动脉升支为蒂的外踝上皮瓣.     

组成型一氧化氮合酶的表达与胃癌的侵袭转移和预后的关系

目的　观察胃癌组织中cNOSmRNA表达分布情况 ,探讨其与胃癌侵袭转移和预后的关系。　方法　运用原位杂交技术 ,检测 119例原发性胃癌标本中cNOSmRNA的表达 ,并对所获得的 82份病例随访资料进行生存分析。　结果　胃癌组织中胃腺癌细胞、血管 淋巴管内皮细胞及巨噬细胞中均可见有cNOSmRNA表达 ;肿瘤细胞分化程度越低、恶性度越高 ,胃腺癌细胞和血管 淋巴管内皮细胞cNOSmRNA阳性表达率就越高 ;胃腺癌细胞和血管 淋巴管内皮细胞cNOSmRNA阳性表达率与胃癌侵袭深度、淋巴结转移以及TNM分期呈正相关 ;胃癌血管 淋巴管内皮细胞cNOSmRNA阳性表达者术后生存率较低 ;巨噬细胞中cNOSmRNA表达与胃癌组织学分型、侵袭深度、淋巴结转移、TNM分期及患者术后生存期无关。　结论　胃腺癌细胞和血管 淋巴管内皮细胞cNOSmRNA表达情况与肿瘤恶性程度、侵袭和转移潜能有关 ,血管 淋巴管内皮细胞上cNOSmRNA阳性表达提示患者预后不良     

Suppressive effects of Sairei-to on monoclonal antibody 1–22–3-induced glomerulonephritis: Analysis of effective components

The effects of treditional Chinese medlclne (Salrel-to) on experimental glomerulonephritls Induced In rats by monodonal antibody (mAb) 1–22–3 lnjectlon was examined. The level of proteinuria in the Sairel-to-treated group was significantly lower than that In the PBS treated group. This suppressive effect was caused by the major component of Sealer-to, Syo-salko-to but not by another component, Gorel-san. The suppressive effect of Syo-salko-to was Identified In Its components ( Bupleuri radix, Pindilae tuber and Zingibers rhizoma ), but not In the other combined components ( Ginseng radix and Zizyphl fructus ). Further study weeled that the suppressive effects of the combined components were mainly derived from Bupleuri radix . It was demonstrated that the actual active Ingredient is probably Salkosaponin-d. Light microscopy revealed that Sairel-to and Its effective components suppressed the proliferation of mesanglal cells and mesanglal matrix expansion. Semi quantitative morphological studies of glomerular lesions on the eighth day showed that Syo-salko-to and Its combined components ( Bupleuri radix, Zinglberis rhizoma and Pinelliae tuber ) suppressed mesanglal matrix expansion significantly compared with phosphate-buffered saline control groups (matrix score: 28.0±19.1 vs 102.3±14.1; 30.9±30.1 vs 102.3±14.1, p<0.005, respectively). It was concluded that Salkosaponln-d, as well as Bupleuri radix , Syo-salko-to and Sairel-to can suppress proteinurla and morphological changes In the rat glomerulonephritls model Induced by mAb 1–22–3.     

Hepatitis C virus and its genotypes in patients suffering from chronic hepatitis C with or without a cryoglobulinemia-related syndrome

Recently, evidence has been presented for a possible association between hepatitis C virus (HCV) infection and essential mixed cryoglobulinemia (EMC). Eleven consecutive patients with EMC and two with cryoglobulinemia type I were examined for the presence of markers of HCV infection. Eleven of 13 patients (10 with EMC and 1 with type I cryoglobulinemia) had anti-HCV antibodies (as determined by a second generation anti-HCV assay) and HCV-RNA in plasma or serum. HCV-RNA was also detected in liver biopsies of five patients. Genotyping showed that HCV genotype 1 was found in 10 of 11 patients with HCV-RNA (9 genotype 1b and 1 genotype 1a) and only one patient had HCV genotype 2. However, a similar high prevalence of genotype 1b (100%) was found in a group of 14 consecutive patients with chronic hepatitis C, who had no clinical evidence of cryoglobulinemia. Concomitant infection was present in three patients with genotypes 2, 3 and 4, respectively. These findings stress the high prevalence of HCV infection in patients with EMC and further study shows that a difference in genotype prevalence was not found between HCV-related EMC and chronic hepatitis C without clinical manifestations of EMC. © 1994 Wiley-Liss, Inc.     

复合rhBMP-2的注射型成骨材料修复犬桡骨骨缺损的实验研究

探讨以纤维蛋白胶(fibrin sealant,FS)为载体,复合rhBMP-2\bFGF的注射型骨修复材料,修复犬桡骨节段性缺损的作用,为其临床应用提供实验依据.实验分为:实验组(FS bFGF rhBMP-2)、对照组(FS).于12只成年健康家犬右侧桡骨中上段造成2cm缺损,制成犬桡骨2cm骨缺损实验模型,然后严密缝合皮下组织及皮肤,将实验材料经伤口周围正常皮肤注射到骨缺损处,术后4、8、16、24w进行放射学检查,术后24w,标本进行组织学和骨密度检查,研究其成骨效应.结果表明:实验组骨缺损区在成骨活跃程度、骨密度和再生髓腔结构等方面均显著优于对照组,使骨缺损得到了成功的修复(P＜0.01).以纤维蛋白胶为载体复合rhBMP-2和bFGF的注射型骨修复材料,具有高效的骨修复能力,对犬的骨缺损有很好的修复效果.     

应用免疫组化技术检测胃癌组织p53、c-erbB-2、p21、nm23基因表达产物及其临床意义

目的：为探讨胃癌组织p53、c-erbB-2、p21、nm23联合基因表达产物对胃癌诊断与治疗方面的价值。方法：应用免疫组化技术检测了手术切除胃癌组织p53、c-erbB-2、p21、nm23基因产物表达。结果：p53蛋白表达阳性率37．6％-46．2％，c-erbB-2为34．6％-56．8％，p21为37．8％。61．5％，nm23为30．8％-70．3％；非胃癌组织(胃、十二指肠溃疡、胃息肉、重度不典型增生)未见c-erbB-2、p21、nm23基因表达。c-erbB-2、p21的表达与胃癌的分化程度有关，p21、nm23基因表达与肿瘤浸润深度、肿瘤转移程度有关。p53、c-erbB-2、p21、nm23四种肿瘤蛋白在胃镜活检标本和手术切除标本中表达是一致的，无显著性差异。结论：对胃癌组织检测p53、c-erbB-2、p21、nm23基因表达产物在胃部的良恶性肿瘤鉴别、非手术临床分期的判断及指导胃癌的临床诊断与治疗等方面具有一定价值。