成骨

BACKGROUND: Osteoblasts derived from bone marrow stromal stem cells are the main force of the cells in bone marrow cavity. In the artificial joint replacement cases, their life situation is closely related to conductive pressure of prosthesis.

背景：骨髓基质干细胞来源的成骨细胞是骨髓腔内主要的受力细胞，在人工关节置换病例中，其生命活动状况与假体传导压力有密切关系。

Adipocytes in bone marrow cavity could decrease the activity of ALP, weaken the expression of Collagen Ⅰ mRNA, inhabit osteogenic potential of bone marrow stromal cell, and induce apoptosis of bone marrow stromal cells.

髓内脂肪细胞可降低骨髓基质细胞内ALP活性，减弱CollagenⅠ mRNA表达，干扰其成骨能力，并能诱导骨髓基质细胞发生凋亡，在骨质疏松症的发病中有着重要的意义。

OBJECTIVE: To investigate a feasible method to mass-produce, culture, and reserve normal osteoblast of people.

目的：探讨建立可行的、能大量生产人正常成骨细胞培养方法和保存方式。

The changes have important effect on the stability of the treatment and the function of mastication.

通过牵引成骨和正畸联合矫治严重上颌后缩后，上颌骨的前移和牙齿的移动必然使上下牙的排列和咬合发生变化，而这种变化对疗效的稳定性和患者的咀嚼功能的恢复有着重要影响。

Osteoblasts and matrix of control group and experiment group showed positive reaction of TGF-β1 but negative in tendency group.

TGF-β1在实验组及对照组的成骨细胞中呈阳性染色，部分骨基质中也有阳性表达，去势组呈阴性表达。

RESULTS: After 3 days of operation, the BMP positive cells were found in the matrix of experimental group I.

将自体成骨样细胞即刻种植在胶原包埋的聚羟基乙酸基质材料上，然后将该复合体或单纯基质材料移植到兔颅骨的一侧全层骨缺损区，作为实验侧或实验侧。

RESULTS: The three kinds of osteotomy in which different levels of osteotomied maxillary complex area were advanced.

通过软硬组织三维有限元模型的建立，可成功模拟面中部牵张成骨术后软组织的变化。

OBJECTIVE: Using membrane guided tissue regeneration technique, to observe the healing velocity and quality of repairing rabbit radius segmental defect combined collagen membrane with allogeneic bone, further more, to contrast the result with pure collagen membrane.

目的：利用膜引导组织再生技术，观察胶原膜复合同种骨颗粒修复兔桡骨节段性骨缺损的成骨速度和质量，并与单纯胶原膜进行比较。

They can also arise in endochondral bone; or primitive mesenchymal cells in the brain, meninges, membranous bone, or soft tissue.

它们可以起源于软骨内骨、或者脑内的间充质细胞、脑膜、膜内成骨或者软组织。

Methods Primary metanephric mesenchyme stem cells were cultivated and multi-directional differentiation was induced.

方法原代分离培养后肾间充质干细胞，在体外特定诱导条件下观察细胞向成骨细胞、脂肪细胞及肾小管上皮细胞的分化及其形态演变，采用细胞免疫荧光检测细胞表面特定蛋白的表达变化。

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％。