神经胶质

Methods:Via a cannula iserted into adominal aorta, Gey's balanced salt solution containing 0.025% collagenase P was perfused into rat normal pancreas. After digestion with collagenase P and protease, Nycodenz density gradient centrifugation was performed to isolate PSC. PSC was identified by its morphology, cytoplasmic lipid droplets and immunocytochemical staining for desmin, GFAP and α-SMA. Results:The production,viability and purity of isolated PSC were（15.3 ± 4.6）× 103／g body weight,（95.0 ± 3.5）%, and ﹥80％ respectively.

大鼠腹主动脉插管灌注后，经胶原酶消化、Nycodenz密度梯度离心，分离得到PSC；通过观察细胞形态、胞质内脂滴和免疫细胞化学方法检测结蛋白、神经胶质酸纤维蛋白（glial fibrillary acidic protein，GFAP）、α平滑肌肌动素（α-smooth muscle actin，α-SMA）的表达来鉴定PSC。

PTEN mainly expressedin neurons in our experiment and the absence of PTEN expression in glia may be relatewith the development of gliomas.

PTEN可能主要在神经元中表达，其在胶质细胞的缺失可能和神经胶质瘤的发生发展有关。

The damage induced by cerebral ischemia reperfusion was investigated solely from neuron or neuroglia in the past, however they are the functional whole and should be studied together.

以往的研究大多数是单纯地从神经元或神经胶质细胞的角度来研究脑的缺血再灌注损伤，但神经元和胶质细胞是一个功能整体，应把二者有机地联系在一起进行研究。

The damage induced by cerebral ischemia reperfusion was investigated solely fromneuron or neuroglia in the past, however they are the functional whole and should be studiedtogether.

以往的研究大多数是单纯地从神经元或神经胶质细胞的角度来研究脑的缺血再灌注损伤，但神经元和胶质细胞是一个功能整体，应把二者有机地联系在一起进行研究。

Nodes of Ranvier; saltatory conduction; Schwann cells; oligodendrocytes; myelin basic protein; demyelination; remyelination; myelinopathy; myelinogenesis; myelin-associated protein; myelin sheaths; demyelinating neuropathy; myelin proteolytic protein; chronic inflammatory demyelinating polyradiculoneuropathy; multiple sclerosis; MS

郎飞氏结；跳跃传导；施旺细胞；少突神经胶质细胞；髓鞘碱性蛋白脱髓鞘；髓鞘再生；髓鞘质病；髓鞘形成；髓磷脂-关联的蛋白质；髓鞘；脱髓鞘神经病；髓磷脂溶解蛋白的蛋白质；慢性炎症性脱髓鞘多神经根神经病；多发性脑硬化；MS

Recent studies found that ischemic brain damage is resulted from many reasons such as functional rearrangement of glia cells, an ion balance disorder, lipide peroxidation induced by free radicals, and changes of neurotransmitters.

许多继发性因素，如缺血后神经胶质细胞功能的重新安排，离子平衡紊乱，自由基引起的脂质过氧化损伤，以及神经递质的改变等可诱导神经细胞死亡，继而导致脑损伤，但有关缺血性细胞死亡机制目前还无定论。

This experiment further investigated the possibility of differentiation of BMSCs in rats into neural stem cells in vitro, and into neural cells and neuroepithelial cells, so as to provide seed cells for cell transplantation of nervous system disease.

目的：已证实骨髓基质细胞可分化为中胚层组织细胞，实验予进一步探讨体外分离培养的骨髓基质细胞向神经干细胞分化的可能性，以及是否能继续定向分化为神经细胞及神经胶质细胞，为神经系统疾病细胞移植治疗提供种子细胞。

At present, the study on NSCs has been gotten delightfully. But how to induce the NSCs to the specific neuron or specific neuroglial cell efficiently need to be studied further.

目前神经于细胞研究已经取得了可喜的进展，但如何高效地诱导神经干细胞分化为待定递质类型的神经元或特定类型的神经胶质细胞有待进一步研究。

BMSCs can be induced into neural stem cells and further neural stem cells derived from bone marrow can differentiate into neural cells and neuroglial cells.

骨髓基质细胞能在体外诱导分化出神经干细胞，且骨髓源性神经干细胞可进一步定向分化为神经细胞及神经胶质细胞。

After the cell growth curves was recorded, RPE cells of the 3-5th passages were utilized. 2、Three different siRNA (siRNAl,siRNA2,siRNA3) targeting against human cx43 gene and one negative control siRNA were designed and transfected into cultured human RPE cells via liposome reagent. The most effective siRNA can be determined by semi-quantitative reverse transcription PCRRT-PCR. 3、To the most effective siRNA, after transfected into human RPEs with different concentration, the cellular proliferate activities were messured by MTT colorimetry ; the percentages of RPE in different cell circle phase was assayed by FCM; the changes of phenotypical properities were observed with SCM; the protein expression of cx43 was studied through immunocytochemistry stain and Weston blot; the communication intercellular was calculated with FRAP; and the ability of recovery was assessed by using an in vitro wound healing model.4、The total proteins of siRNA1 and RPE were seperated by two-dimensional gel electrophoresis and visualized by silver staining. Proteins with significant expression alterations were selected and their peptide mass fingerprints (PMFs were obtained by matrix-assisted laser desorption/ionization time of flying mass spectrometry (MALDI-TOF-MS).The PMFs were used to search NCBInr database by Auto MS-Fit software.

实验方法：1、培养原代的人RPE细胞，经过细胞角蛋白、S-100和神经胶质原纤维酸性蛋白免疫细胞化学鉴定后，通过AO/PI染色技术确定培养细胞的存活率，描记其生长曲线，第3-5代用于以下细胞实验2、生物合成针对人cx43基因的三条小干扰RNA和一条阴性RNA通过脂质体转染RPE细胞后，通过RT-PCR的方法确定抑制效率最高的干扰片断3、将该片段以不同浓度通过阳离子脂质体转染培养的人RPE细胞后，采用MTT法观察其对细胞的增殖力的作用；通过流式细胞仪观察其对细胞周期的影响；通过扫描电镜观察其对细胞形态的影响；通过免疫细胞化学和Weston blot观察其对cx43蛋白表达的作用；采用激光共聚焦和荧光淬灭恢复技术观察荧光恢复速率平均百分率，评价其对细胞间通讯功能的影响；通过制作RPE细胞损伤模型，观察其对损伤修复能力的作用4、分离纯化转染siRNA的RPE组和正常对照组RPE细胞的全部蛋白质，应用等电聚焦电泳和SDS-PAGE双向电泳技术，银染显示分离出的蛋白质斑点，经凝胶图像分析软件对两个样本进行胶图分析，寻找差异蛋白点。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。