成胶质细胞瘤

Rat glioma cell C6 was infected by the deficiency recombinant retrovirus (named C6TK). The sensitivity of C6TK cells to GCV or ACV increased 450 or 10 times than that of C6 cells respectively. Rat C6 glioma model was successfully built, and SD rats inoculated intracerebrally C6TK cells had normal gliomas. The average survival periods of the rats were about 15 days. However, after treated with ACV, the growth of C6TK tumors obviously regressed, and the survival periods extended to 57.8±8.1 days, especially in rats injected with mixed PA317TK and C6 cells or in situ PA317TK cells, which the tumors nearly disappeared after ACV administration and the survival periods extended to over 120 or 71.4±36.1 days respectively, P＜0.001.

结果：构建了带有HSV-tk基因的反转录病毒载体GINaTK，应用脂质体转移方法将GINaTK导入反转录病毒包装细胞PA317，成为产病毒细胞PA317TK，用带有HSV-tk基因的复制缺陷型反转录病毒感染C6细胞，命名为C6TK细胞，对GCV和ACV的敏感性分别高于亲本450倍和10倍；成功地建立了大鼠脑胶质瘤模型，并证实转染细胞C6TK的成瘤效应未改变，存活期约为15天；而经ACV治疗后，含有C6TK细胞的肿瘤生长明显被抑制，大鼠生存期延长为57.8±8.07天，尤其是采用PA317TK细胞混和治疗组和原位治疗组，肿瘤基本消失，大鼠生存期显著延长，混和治疗组存活120天以上，原位治疗组存活至71.4±36.1天。t检验，P值均小于0.001。

Results: GINaTK retroviral vector containing HSV-tk was constructed and transduced into PA317 retrovirus packaging cell by lipofectin (named PA317TK). Rat glioma cell C6 was infected by the deficiency recombinant retrovirus (named C6TK). The sensitivity of C6TK cells to GCV or ACV increased 450 or 10 times than that of C6 cells respectively. Rat C6 glioma model was successfully built, and SD rats inoculated intracerebrally C6TK cells had normal gliomas. The average survival periods of the rats were about 15 days. However, after treated with ACV, the growth of C6TK tumors obviously regressed, and the survival periods extended to 57.8±8.1 days, especially in rats injected with mixed PA317TK and C6 cells or in situ PA317TK cells, which the tumors nearly disappeared after ACV administration and the survival periods extended to over 120 or 71.4±36.1 days respectively, P ＜0.001.

结果：构建了带有HSV-tk基因的反转录病毒载体GINaTK，应用脂质体转移方法将GINaTK导入反转录病毒包装细胞PA317，成为产病毒细胞PA317TK，用带有HSV-tk基因的复制缺陷型反转录病毒感染C6细胞，命名为C6TK细胞，对GCV和ACV的敏感性分别高于亲本450倍和10倍；成功地建立了大鼠脑胶质瘤模型，并证实转染细胞C6TK的成瘤效应未改变，存活期约为15天；而经ACV治疗后，含有C6TK细胞的肿瘤生长明显被抑制，大鼠生存期延长为57.8±8.07天，尤其是采用PA317TK细胞混和治疗组和原位治疗组，肿瘤基本消失，大鼠生存期显著延长，混和治疗组存活120天以上，原位治疗组存活至71.4±36.1天。t检验，P值均小于0.001。

Neuroectoderm; neural crest; neural plate; floor plate; neural tube; neuraxis; neurulation; neuroblasts; stem cells; differentiation; ontogeny; morphogenesis; histogenesis; organogenesis; synaptogenesis; gangliogenesis; embryogenesis; axonogenesis; retinogenesis; gliogenesis; glial progenitor cells; oligodendrocyte progenitor cells; retinal progenitor cells; nerve growth factor; neurotrophic factors; trophic factors; growth factors; neural tube defects; anencephaly; spina bifida; neuroblastoma cells; cell migration; neurogenesis; development; developmental stages

神经外胚层；神经脊；神经板；底板；神经管；轴索；神经胚形成；成神经细胞；干细胞；分化；个体发生；形态发生；组织发生；器官发生；突触发生；gangliogenesis；胚胎发生；axonogenesis；retinogenesis；gliogenesis；神经胶质祖细胞；少突神经胶质细胞祖细胞；视网膜祖细胞；神经生长因子；神经营养因子；营养因子；生长因素；神经管故障；无脑；脊柱裂；成神经细胞瘤细胞；细胞迁移；神经发生；发展；发展进程首页上一页下一页末页共有 22 条记录，本页从第 11 到第 20 条。

Recombinant apoE〓 protein could inhibit the death of the neurocyte cell of mice brain induced by beta amyloidal peptide 25-35 fragment and the death of the SK-N-SH-neuroblastoma cell induced by beta amyloidal peptide 25-35 fragment and 1-40 fragment.

重组apoE〓蛋白对Aβ 25—35多肽诱导的胎鼠大脑皮质神经细胞凋亡及Aβ25-35和A β1-40多肽诱导的神经成纤维胶质瘤细胞生存力下降均具有明显的拮抗作用，表明apoE对神经退化性疾病中的细胞死亡具有拮抗作用。

The pcDNA〓-apoE〓 plasmid was transfected to SK-N-SH Neuroblastoma cell by liposome. It could be screened by G〓. The immunohistochemical assay was shown that neuroblastoma cell transfected by pcDNA〓-apoE〓 expressed the recombinant apoE protein. The intracellular expressed recombinant protein could inhibit the death of neuroblastoma cell induced by beta amyloidal peptides 25-35 fragment.

用pcDNA〓—apoE〓真核表达载体与脂质体共转染神经成纤维胶质瘤细胞，用G〓选择压力筛选，细胞免疫荧光检测表明，pcDNA〓—apoE〓转染的神经成纤维胶质瘤细胞表达了apoE〓重组蛋白，这种内源性的apoE〓重组蛋白对25μM Aβ25—35多肽诱导的神经成纤维胶质瘤细胞的死亡具有拮抗作用。

Therefore, our data show that in cases when clear cell chondrosarcoma and chondroblastoma pose a diagnostic challenge, the presence of type II collagen in the extracellular tumour matrix significantly supports the diagnosis of clear cell chondrosarcoma and aids in distinguishing it from chondroblastoma.

我们的数据表明，在诊断透明细胞软骨肉瘤和成软骨细胞瘤受阻时，细胞外肿瘤基质中II型胶原的存在对于诊断透明细胞软骨肉瘤相当有帮助，并有助于和成软骨细胞瘤间的鉴别。

Neuroectoderm; neural crest; neural plate; floor plate; neural tube; neuraxis; neurulation; neuroblasts; stem cells; differentiation; ontogeny; morphogenesis; histogenesis; organogenesis; synaptogenesis; gangliogenesis; embryogenesis; axonogenesis; retinogenesis; gliogenesis; glial progenitor cells; oligodendrocyte progenitor cells; retinal progenitor cells; nerve growth factor; neurotrophic factors; trophic factors; growth factors; neural tube defects; anencephaly; spina bifida; neuroblastoma cells; cell migration; neurogenesis; development; developmental stages

神经外胚层；神经脊；神经板；底板；神经管；轴索；神经胚形成；成神经细胞；干细胞；分化；个体发生；形态发生；组织发生；器官发生；突触发生；gangliogenesis；胚胎发生；axonogenesis；retinogenesis；gliogenesis；神经胶质祖细胞；少突神经胶质细胞祖细胞；视网膜祖细胞；神经生长因子；神经营养因子；营养因子；生长因素；神经管故障；无脑；脊柱裂；成神经细胞瘤细胞；细胞迁移；神经发生；发展；发展进程下一页末页共有 23 条记录，本页从第 1 到第 10 条。

Materials and Methods: Two cases of brain tumors (one was glioblastoma, the other was central neurocytoma) were performed dynamic enhanced CT and DSC-T2~* MR perfusion imaging before operations.

材料和方法：术前对2例脑肿瘤(1例胶质母细胞瘤，另1例中央神经细胞瘤作为对照)分别行动态对比增强CT灌注和动态T2~*敏感对比增强平面回波(DSC-T2~*)MR灌注成像，分析两种灌注方法的rCBV、CBF结果。

At histopathologic analysis, neuronal tumors are usually classified as pure neuronal cell tumors (gangliocytoma, Lhermitte-Duclos disease , central neurocytoma) and mixed neuronal-glial tumors (ganglioglioma, desmoplastic infantile ganglioglioma, dysembryoplastic neuroepithelial tumor, ganglioneuroma).

根据组织病理学的分析，神经元肿瘤通常被分为：单纯的神经元细胞肿瘤（神经节细胞瘤，Lhermitte-Duclos 病〔发育不良性小脑神经节细胞〕瘤），中枢神经细胞瘤）和混合性的神经元-胶质肿瘤（神经节神经胶质瘤，成结缔组织性婴儿节细胞胶质瘤，胚胎发育不良性神经上皮瘤，神经节瘤）。

Magnetic resonance imaging ; Spectrum analysis ; Glioblastoma ; Brain abscess ; Radiation necrosis

磁共振成像；光谱分析；胶质母细胞瘤；脑脓肿；放射性坏死

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。