前髓细胞

Methods:9 patients including 8 male and 1 female were included in this study.2 patients suffered from both side of ANFH,5 were righe side and 2 were left side.X-ray,CT and MRI were performed before the surgery.4 hips were classified as ARCO stage 1,7 hips were stage 2.All the patients were treated as follows:the area of NFH and cystis degeneration were detected and bouche decompression was done through X-ray with C-arm,and the necrotic bone was cleared for the pathologic diagnosis under the monitoring of arthroscopy.And then the non-cell based tissue engineering bone, which was the complex of autologous red bone marrow and osteoinductice absorbing material containing BMP,was transplanted into the body.

本组9例，男性8例，女性1例；双侧股骨头坏死2例，右单侧股骨头坏死5例，左单侧股骨头坏死2例；术前均行X线摄片、CT、MRI 检查，ARCO分期：Ⅰ期4髋，Ⅱ期7髋；C型臂X线透视下行股骨头坏死区和囊性变区定位、髓芯减压，关节镜监视下，刮除坏死骨送病理；植入由自体红骨髓与含BMP的骨诱导活性材料复合成的非细胞型组织工程骨，并用空心钛钉支撑股骨头软骨下骨质。

Neural cell adhesion molecule L1, discovered in the 80s, is one of the matters that can promote nerve regeneration. It can mediate the interaction of cell-to-cell and cell-to-matrix, take great efforts on neurite outgrowth and fasciculation, migration of neural cells, formation of the myelin, structure of neural trace, transmembrane signal transduction, inhibiting apoptosis of neural cells, even on immune system and formation of the tumor. Li is discovered on the mouse's Cerebellar membrane primarily. Thereafter, it also is found in post- mitotic neurons, pre- and non-myelinating Schwann cells and so on.

神经细胞粘附分子L1（L1）是80年代发现的具有促进神经再生作用的物质，它能介导神经细胞与神经细胞之间的粘附，在神经轴突的生长、聚集，神经细胞的转移，纤维髓鞘的形成，神经通路的构建及信号的转导，抑制神经细胞的凋亡甚至在免疫系统、肿瘤的发生等方面均具有非常重要的作用。L1最初是从小鼠的小脑膜中发现，后来发现在有丝分裂后的神经元，髓鞘形成前及非形成髓鞘的雪旺细胞等组织中同样存在。

Due to its specific characteristics on MRI and DSA,hemangioblastoma of the medulla oblongata can be correctly diagnosed before operation.

延髓血管母细胞瘤在MRI及DSA上有其特点，可在术前准确地作出诊断。

Neuronal cell bodies and fibers with moderate mGluR7-LI were seen in the olfactory bulb,anterior olfactory nucleus,piriform cortex,septofimbrial nucleus,bed nucleus of the strial terminalis,lateral hypothalamic area,paraventricular hypothalamic nucleus,supramammillary nucleus,medial and lateral mammillary nuclei,most part of the thalamus,medial and lateral geniculate bodies,nucleus of the optic tract,red nucleus,substantia nigra,interpeduncular nucleus,pontine nuclei,lateral parabrachial nucleus,superior olivary complex,nucleus of the trapezoid body,motor nucleus of the trigeminal nerve,facial nucleus,ambiguus nucleus,cochlear nucleus,vestibular nuclei,nucleus of the solitary tract,hypoglossal nucleus,prepositus hypoglossal nucleus,medullary reticular formation,Purkinje cells of the cerebellum,nucleus raphe obscurus,intermediolateral nucleus of the spinal cord,Onuf′s nucleus and lamina X of the spinal cord.

呈中等强度染色的神经元胞体和纤维见于嗅结节、前嗅核、梨状皮质、隔伞核、终纹床核、下丘脑外侧区、下丘脑室旁核、乳头体上核、乳头体内、外核、丘脑大部分核团、内外侧膝状体、视束核、红核、黑质、脚间核、桥核、臂旁外侧核、上橄榄复合体、斜方体核、三叉神经运动核、面神经核、疑核、耳蜗核、前庭核簇、楔束外核、孤束核、舌下神经核、舌下神经前置核、中缝隐核、延髓网状结构、小脑蒲肯野细胞层、脊髓中间带外侧核、Onuf核和中央管周围灰质。

The females incubated at 33 , their ovarium has powerful cortex, the germinal epithlium produce oocyte, its medulla degenerate into ovarian cavity. During sexual differentiation, mitochondria and smooth endoplasmic reticulum in cells of ovary increase in quantity, they disintegrate after sexual differentiation. There are a lot of big grana in cells of ovary before sexual differentiation, in the course of sexual differentiation the quantity of the big grana decrease, while small grana increase and peakafter sexual differentiation. The males incubation at 26 , cortices of their testes degenerate into a thin albuginea. Medulla are formed by testicular cords in which scatter spermatogonium.

33℃下孵化的小龟卵巢皮质发达，由原始生殖细胞产生卵原细胞，髓质退化成为卵巢腔，分化时卵巢细胞的超微结构显示线粒体和内质网的数量大大增加，它们在分化结束后解体，分化前细胞内有较多的大颗粒，在分化中大颗粒减少，小颗粒增多，在分化后小颗粒达到最多。26℃下孵化的小龟精巢皮质退化成为一层薄的白膜，髓质有许多睾丸管构成，管腔内有散落排列的精原细胞。

RESULT: 1.Ouabain act on lens sodium-pump,under the LM,lens anterior capsular membrane discontinuous,epithelium cells clustered,occluding zonule seperated,lens fiber layers fractured.Under the EM,cells totally hollowed,mitochondria swelling,myelin figure appeared.RT-PCR examine the expression condition of αsubunit of sodium pump on mRNA level,α1、α2 and α3-isoform are all decreased.2.Digoxin act on lens sodium-pump,under the LM,lens cell oedema,linkage distructed,extensive exfoliation.Under the EM,plasma appeared little half-transparant hollow region,mitochondria swelling and ridge disappeared. RT-PCR examine,α1、α2 and α3-isoform are all decreased.3.Amphotericin B act on lens sodium-pump,under the LM,lens epithelium cells linked tightly,arranged in-line,lens fiber layers arranged tightly and regularily.Under the EM,abbundant cellular organes,exuberant cells function indicated. RT-PCR examine the expression condition of αsubunit of sodium pump on mRNA level,α1 and α3-isoform are increased significantly,demonstrated isoform-specific action.4D-thyroxine act on lens sodium-pump,under the LM,lens plasmalemma integrated,cells arranged tightly and regularily.Under the EM,nucleus fission appeared,desmosome half-desmosome and tensile microfilaments linked the cells. RT-PCR examine,α2 and α3-isoform are increased, also demonstrated isoform-specific action.5.Vitamin E act on lens sodium-pump,under the LM,lens anterior capsular membrane continuous and smooth,epithelium cells tightly linked,lens fiber layers appearede hollow region occasionally.Under the EM,lateral membrane high density belt appeared,abundant nucleolus. RT-PCR examine,onlyα1-isoform are increased, demonstrated significantly isoform-specific action.6.DMSO act on lens sodium-pump,under the LM,lens anterior capsular membrane slightly thicker,cells linkage partly distructed.Under the EM,plasmalemma denaturation,mitochondria swelling.RT-PCR examine,α1、α2 and α3-isoform are all altered slightly and haven't significant meanning.

结果：1、哇巴因作用于晶状体钠泵后，光镜下晶状体前囊膜断裂、上皮细胞聚积、闭合连接分离、纤维板层裂隙，电镜下全层细胞空泡化、线粒体肿胀出现髓样结构，RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达均减弱。2、地高辛作用于晶状体钠泵后，光镜下晶状体细胞水肿、细胞连接破坏、广泛剥离，电镜下胞质见少许半透明空化区、线粒体肿胀嵴消失，RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达均减弱。3、两性霉素B作用于晶状体钠泵后，光镜下晶状体上皮细胞紧密连接、线状排列、纤维板层紧密规整，电镜下细胞器丰富、细胞功能旺盛，RT-PCR法检测α1及α3表达显著增强、具有一定的重整异构作用特异性。4、D甲状腺素作用于晶状体钠泵后，光镜下晶状体质膜完整、细胞排列紧密规整，电镜下胞核见分裂像、细胞间有桥粒、半桥粒及张力微丝，RT-PCR法检测α2及α3表达均增强、亦有一定的重整异构作用特异性。5、维生素E作用于晶状体钠泵后，光镜下晶状体前囊膜连续光滑、上皮细胞紧密连接、纤维板层偶见空化，电镜下囊侧膜内有高电子密度带、细胞核仁丰富，RT-PCR法检测仅有α1的表达显著增强、具有极强的重整异构作用特异性。6、二甲基亚砜作用于晶状体钠泵后，光镜下晶状体前囊膜轻度增厚、细胞连接部分破坏，电镜下质膜变性、线粒体肿胀，RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达无显著改变。

RESULTS: The mild traction group showed angulus anterior individual neuron slightly engorged, neuron and nerve fiber morphous was normal essentially; individual substantia alba demyelinates in fragmentis; medullary sheath and auxiliary fibers of nerve root were hydropsia slightly without conspicuous myelinolysis. The moderate traction group demonstrated myelinolysis change in the spinal cord, and neurofibras lined up chaos, auxiliary fibers disaggregated, neuron dropsy, tigroid body disappeared with karyopycnosis and anachromasis in neurons; nerve root showed myelinolysis. The severe traction group displayed a great demyelination region; anterior motor neurons with karyopycnosis and anachromasis; myelinated nerve fiber of nerve root shrinked, decreased in number, with severe demyelination changes.

结果：轻度牵拉组牵拉侧前角个别神经元稍肿胀，神经元及神经纤维形态基本上正常，个别白质小片状脱髓鞘样改变，神经根髓鞘和轴索轻度水肿，脱髓鞘不明显；中度牵拉组白质有脱髓鞘改变，神经纤维排列紊乱，轴索崩解、断裂；灰质神经元水肿明显加重，前角运动神经原细胞尼氏体消失，核固缩、深染，神经根髓鞘和轴索水肿，局部轻度脱髓鞘改变；重度牵拉组牵拉侧白质为不规则的大片脱髓鞘区，前角运动神经元胞体固缩、变形、核深染，神经根有髓神经纤维萎缩、数目减少，重度脱髓鞘改变。

I.. The virions were observed in the cylindrical cell at 9 h p. i.. The intact virions probably penetrated through the peritrophic membrane, then absorbed and invaded the microvilli for infecting the cylindrical cells.

作者认为病毒入侵是以整个病毒粒子穿越中肠围食膜，吸附并进入微绒毛，感染圆筒形细胞，与前入病毒入侵只是髓核进入细胞，而病毒衣壳仍留在细胞外的推测不同。

Firstly, we performed pulpotomy for posterior teeth and pulpectomy for anterior teeth. And the experiments were divided into four groups. In the first group, nothing was put in the pulp chamber or canals. In the second group, deciduous dental pulp stem cells of mini-pig with cultured medium were transplanted into the pulp chamber and pulp canals. In the third group, deciduous dental pulp stem cells of mini-pig with lovastatin were transplanted. In the fourth group, deciduous dental pulp stem cells of mini-pig with odontoblast induction medium were transplanted.

在动物实验中，我们将迷你猪乳牙的前牙作拔髓，后牙做断髓处理，各分成四组做实验，第一组不放任何细胞、第二组加入迷你猪乳牙牙髓干细胞和培养液、第三组加入迷你猪乳牙牙髓干细胞和lovastatin，第四组加入迷你猪乳牙牙髓干细胞和odontoblast induction medium，观察三个月后，以探讨其牙齿组织是否会再生。

Results 5 cases of ependymocytoma, 3 cases of astrocytoma, 1 medulloblastoma hemangioblastoma in 10 cases of intra-medullary tumor; 36 cases of neurogenic tumor, 11 cases of spinal meningioma in 47 cases of subdural extramedullary tumor; 2 cases of neurogenic tumor strided over scleromeninx;2 cases of extradural metastatic tumor, 1 cestodiasis, 2 cases of epidural hematoma, which were mistaken for hemangioma before surgical operation and 1 vascular malformation in 4 cases of intraspinal nontumorous occupying lesion.

结果：10例髓内肿瘤中，室管膜瘤5例；星形细胞瘤3例；血管母细胞瘤1例；成神经管细胞瘤1例。47例脊髓外硬膜下肿瘤中，神经源性肿瘤36例；脊膜瘤11例。2例跨硬膜内外生长的神经源性肿瘤2例。硬膜外的转移瘤2例。4例椎管内非肿瘤性占位性病变中，椎管内绦虫病1例；硬膜外血肿2例，术前误为血管瘤；血管畸形1例。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。