小脑神经节细胞胶质瘤1例

脑神经节细胞胶质瘤(ganglioglioma)是发生于中枢神经系统中罕见的神经元和胶质细胞混合性肿瘤,其发生率占中枢神经系统肿瘤的0.4%,占脑肿瘤的1.3%.肿瘤好发于儿童和青年,60.0%在30岁以内.本文是对一患者小脑神经节细胞胶质瘤的诊断与治疗的观察.     

脑星形细胞瘤中TIP30、VEGF和CD34的表达及其相关性研究

Objective To investigate the expression and relationship of TIP30(HIV-1 Tat interactive protein 2), vascular endothelial growth factor (VEGF) and MVD (detected by CD34) in the angiogenesis of human brain astrocytomas. Methods Expression of TIP30, VEGF and CD34 in 19 cases of normal brain tissue and 71 cases of astrocytoma were immunohistochemically examined with Elivision plus two-step method. Results The positive expression of TIP30 could be seen in cytoplasm of neuroglial cells and neurons of 19 normal brain tissues. The positive expression rate of TIP30 in 71 cases of astrocytoma was 33.80 % (24/ 71). The positive expression rate of TIP30 in astrocytoma of different grades was 52 % for grade Ⅱ, 34.78 % for grade Ⅲ and 13.04 % for grade Ⅳ. The positive expression rate of TIP30 in high grade (Ⅲ+Ⅳ) of astrocytoma was found significantly lower than that in low grade(Ⅱ) (χ2=5.71, P <0.05); The expression of VEGF and MVD detected by CD34 in astrocytomas were higher than that in normal brain tissue and increased as the tumor grade increased; In astrocytoma, the negtive correlation was found between the expression of TIP30 and VEGF (r=-0.428, P<0.05); no correlation was found between TIP30 and MVD(r=-0.065, P 0.05); the positive correlation was found between VEGF and MVD(r=0.684, P<0.01). Conclusion The positive expression rate of TIP30 in normal brain tissue is significantly higher than that in astrocytoma. The positive expression rate of TIP30 significantly decreases as the pathological grade of the astrocytoma increases; The expression of TIP30 and VEGF is negatively correlated in astrocytoma.     

脑星形细胞瘤中TIP30、VEGF和CD34的表达及其相关性研究

Objective To investigate the expression and relationship of TIP30(HIV-1 Tat interactive protein 2), vascular endothelial growth factor (VEGF) and MVD (detected by CD34) in the angiogenesis of human brain astrocytomas. Methods Expression of TIP30, VEGF and CD34 in 19 cases of normal brain tissue and 71 cases of astrocytoma were immunohistochemically examined with Elivision plus two-step method. Results The positive expression of TIP30 could be seen in cytoplasm of neuroglial cells and neurons of 19 normal brain tissues. The positive expression rate of TIP30 in 71 cases of astrocytoma was 33.80 % (24/ 71). The positive expression rate of TIP30 in astrocytoma of different grades was 52 % for grade Ⅱ, 34.78 % for grade Ⅲ and 13.04 % for grade Ⅳ. The positive expression rate of TIP30 in high grade (Ⅲ+Ⅳ) of astrocytoma was found significantly lower than that in low grade(Ⅱ) (χ2=5.71, P <0.05); The expression of VEGF and MVD detected by CD34 in astrocytomas were higher than that in normal brain tissue and increased as the tumor grade increased; In astrocytoma, the negtive correlation was found between the expression of TIP30 and VEGF (r=-0.428, P<0.05); no correlation was found between TIP30 and MVD(r=-0.065, P 0.05); the positive correlation was found between VEGF and MVD(r=0.684, P<0.01). Conclusion The positive expression rate of TIP30 in normal brain tissue is significantly higher than that in astrocytoma. The positive expression rate of TIP30 significantly decreases as the pathological grade of the astrocytoma increases; The expression of TIP30 and VEGF is negatively correlated in astrocytoma.     

Artemin在食管癌中表达作用的研究

目的:探讨Artemin(ATRN)在食管癌中的表达及作用.方法:采用免疫组化和real-time PCR方法检测ATRN在食管癌组织126例、癌旁组织126例和正常组织21例中的表达水平;应用siRNA技术在食管癌TE11细胞系中研究ATRN表达及对肿瘤细胞的凋亡影响.结果:126例食管癌中ATRN的阳性表达率为73.81%(93/126),癌旁组织的阳性表达率为44.44%(56/126);21例正常食管组织中的ATRN阳性表达率为14.29%(3/21),正常食管组织与食管癌组织及癌旁组织比较差异均有统计学意义(x2分别为32.89、23.15.均P＜0.01);TE11-siRNA细胞系ATRN的mRNA和蛋白表达水平均低于TE11-CK细胞系中相应的表达水平.siRNA抑制食管癌细胞中ATRN的表达后,促进了TE11细胞的凋亡.结论:ATRN与食管癌的生物学行为有关.     

Stat3通路相关基因在散发性大肠管状腺瘤癌变中的表达及意义

目的 探讨Stat3及CyclinD1、Bcl-xL在散发性大肠管状腺瘤癌变过程中的可能作用。方法 采用免疫组化方法检测107例散发性大肠管状腺瘤异型增生及癌变组织中Stat3和CyclinD1、Bcl-xL在蛋白水平的表达情况。结果 腺瘤伴异型增生组和癌变组中的Stat3蛋白的表达明显高于正常大肠黏膜组(P=0.000),且癌变组中Stat3蛋白的表达高于腺瘤伴异型增生组(P=0.003);腺瘤伴异型增生组和癌变组中CyclinD1蛋白的表达均明显高于正常大肠黏膜组(P=0.000),且癌变组中CyclinD1蛋白的表达高于腺瘤伴异型增生组(P=0.000);大肠管状腺瘤伴异型增生组和癌变组中Bcl-xL在蛋白水平的阳性表达率均明显高于正常大肠黏膜组（P=0.000),而且癌变组中Bcl-xL的表达明显高于腺瘤伴异型增生组(P=0.000);Stat3、CyclinD1和Bcl-xL均随腺瘤异型增生程度的增高呈递增趋势。Stat3与CyclinD1、Bcl-xL 的表达存在正相关关系。结论 Stat3、CyclinD1和Bcl-xL可能在散发性大肠管状腺瘤癌变过程中起一定的作用。     

结直肠癌组织Fascin和CXCR4表达及其临床意义的探讨

目的:探讨骨架蛋白Fascin和趋化因子CXCR4在结直肠癌组织的表达及其与患者临床病理特征的关系。方法:采用免疫组织化学SP法,检测126例结直肠癌及20例正常黏膜组织Fascin和CXCR4的表达。结果:癌组织中,Fascin和CXCR4阳性率分别为47.62%和41.27%,正常黏膜阳性率均为15.00%,差异均有统计学意义,P值均<0.05。结直肠癌组织Fascin和CXCR4的表达与肿瘤组织学分级、临床Duke’s分期和淋巴结转移有关,P值均<0.05,CXCR4的表达还与肿瘤浸润深度有关,P<0.05。结直肠癌组织Fascin和CX-CR4表达水平呈正相关(r=0.411,P=0.002)。结论:结直肠癌组织Fascin和CXCR4的表达均高于正常黏膜组织,且呈正相关,Fascin和CXCR4可能在结直肠癌的浸润和转移中发挥一定作用,但其具体的分子机制尚待深入研究。     

脑星形细胞瘤中TIP30、VEGF和CD34的表达及其相关性研究

Objective To investigate the expression and relationship of TIP30(HIV-1 Tat interactive protein 2), vascular endothelial growth factor (VEGF) and MVD (detected by CD34) in the angiogenesis of human brain astrocytomas. Methods Expression of TIP30, VEGF and CD34 in 19 cases of normal brain tissue and 71 cases of astrocytoma were immunohistochemically examined with Elivision plus two-step method. Results The positive expression of TIP30 could be seen in cytoplasm of neuroglial cells and neurons of 19 normal brain tissues. The positive expression rate of TIP30 in 71 cases of astrocytoma was 33.80 % (24/ 71). The positive expression rate of TIP30 in astrocytoma of different grades was 52 % for grade Ⅱ, 34.78 % for grade Ⅲ and 13.04 % for grade Ⅳ. The positive expression rate of TIP30 in high grade (Ⅲ+Ⅳ) of astrocytoma was found significantly lower than that in low grade(Ⅱ) (χ2=5.71, P <0.05); The expression of VEGF and MVD detected by CD34 in astrocytomas were higher than that in normal brain tissue and increased as the tumor grade increased; In astrocytoma, the negtive correlation was found between the expression of TIP30 and VEGF (r=-0.428, P<0.05); no correlation was found between TIP30 and MVD(r=-0.065, P 0.05); the positive correlation was found between VEGF and MVD(r=0.684, P<0.01). Conclusion The positive expression rate of TIP30 in normal brain tissue is significantly higher than that in astrocytoma. The positive expression rate of TIP30 significantly decreases as the pathological grade of the astrocytoma increases; The expression of TIP30 and VEGF is negatively correlated in astrocytoma.     

β catenin及其通路相关基因在大肠腺瘤癌变中的意义

大肠腺瘤是一种具有癌变潜能的良性病变 [1]. 近年来 , 随着大肠腺瘤癌变机理研究的不断深入 ,β catenin及 APC β catenin/Tef/Lef 通路在大肠腺瘤癌变中的作用引起有关学者的关注 , 并进行了不少研究工作 , 现将近年的有关研究做一综述 . 1 β catenin和β catenin基因 catenins(连环蛋白 )是一组与钙粘蛋白 ( cadherin) 在细胞膜内起作用的粘附蛋白 , 包括α、β、γ等几种 . 没有 catenins表达 , 单纯钙粘蛋白不具备粘附及信号传导功能 . β catenin 是原癌基因编码的蛋白质 , 分子量为 92 kDa, 在个体进化上具有高度保守性 . β catenin通过其氨基端与α catenin结合 , 后者又与肌动蛋白细胞骨架系统相连 , 而其结构保守的氨基酸重复序列可结合 APC蛋白或 E- 钙粘蛋白以及细胞转录因子 ( Tef) . β catenin 在细胞内有两种功能 : 一是连接 E- 钙粘蛋白形成 E cadherin β catenin功能复合体 , 调节细胞粘附系统 , 影响细胞的粘附性、运动性 , 进而影响组织结构和形态的发生 ;二是 Wnt信号过程中的重要成分 .     

原发性阑尾腺癌1例并文献复习

患者,女性,35岁.右下腹疼痛4个月加重10d急诊入院.查体,腹软,右下腹局限性压痛、反跳痛,并可触及6.0cm×5.0cm×2.0cm包块.B超示,阑尾周围脓肿.实验室检查,白细胞11.0×109/L.临床诊断:阑尾周围脓肿.术中探察,大网膜与回盲部紧密包裹,阑尾为盲肠后外侧位,明显增粗,无坏死穿孔,纵行剖开阑尾,可见腔内有一乳头状肿物阻塞管腔,术中冰冻病理回报,阑尾腺癌.行右半结肠切除术.     

大肠腺瘤样息肉癌变中ras p21,p53表达及DNA含量变化

目的；探讨大肠腺瘤样息肉癌变机理。方法：以病理学与ＦＣＭ技术相结合的方法，定量研究４３例大肠腺瘤样息肉（ｃｏｌｏｒｅｃｔａｌａｄｅｎｏｍａｔｏｕｓｐｏｌｙｐｓ，ＣＡＰ）ＣＡＰ伴有上皮不典型增生及ＣＡＰ癌变细胞的ＤＮＡ含量与癌基因，ｒａｓ表达及抑癌基因，ｐ５３异常表达，结果：ＣＡＰ细胞ＤＮＡ含量均处在ＤＮＡ二倍体的范围内，而ＣＡＰ伴上皮不典型增生和ＣＡＰ癌变组细胞的ＤＮＡ含量明显高于ＣＡＰ，且为ＤＮ