成骨

Objective To study the effects of basic fibroblast growth factor on bone formation.

目的 探讨碱性成纤维细胞生长因子对成骨细胞合成骨作用的影响。

It seems that excessive products of apoptosis induce cell proliferation and sclerotic changes during fluorosis.

一定剂量的氟促使软骨细胞、成骨细胞凋亡，同时也促进成骨细胞增殖。

BACKGROUND: Transgenic cell transplantation can elevate quantity and activity of osteoblasts, and can be a major method to repair bone defects.

背景：转基因细胞移植可以提高成骨细胞数量及成骨活性，有可能成为骨缺损的重要修复方法。

RESULTS:①Histological analysis showed membrane bone formation and endochondral bone. A mass of chondrocytes appeared in bony callus of the OVX group at days 21 and 28 after operation.

结果：①组织学观察结果：显示骨折处膜内成骨和软骨成骨两种方式，术后第21天及28天时去势组骨痂中仍可见大量软骨细胞。

All of above were higher than those of control side.Conclusions ADM can improve the bone quality, increase bone density and intensity and is an ideal guided bone regeneration membrane for alveolar ridge agumentation with TiNi-SMA distraetor.

脱细胞真皮基质作为屏障膜，能提高牵张区成骨质量，增加骨强度，在镍钛记忆合金牵张成骨过程中是一种理想的引导骨再生生物膜。

The palate bone defects can be repaired completely by GBR with collagen composite of human recombinant morpho...

1复合Hr -BMP胶原膜GBR具有确实有效的骨引导和骨诱导性，在骨缺损修复的早期阶段即可产生大量的新骨；2 复合Hr-BMP胶原膜植入后 4周内的成骨活动最活跃，胶原膜和复合Hr-BMP胶原膜在其降解吸收过程中，不干扰后续的成骨活动；3仍有必要构建具有适合的吸收降解性和一定力学强度的隔膜材料。

This is the first delineation of an aspartic acid substitution in new site of the al chain causing nonlethal osteogenesis imperfecta.

COL1A1基因突变也是中国人群中成骨不全致病原因之一，现发现的突变属成骨不全一个新的致病基因突变。

The bone mineral density of mandible was measured at 1 day, 1, 2, 4 and 6 weeks after operation. The expression and distribution of Smad7 were observed by immunohistochemistry.

各组分别于牵张成骨后1 d，1，2，4，6周取材，在牵张成骨侧下颌骨行骨密度测量，用免疫组织化学法观察兔下颌骨牵张过程中不同时期Smad7的表达和分布。

Weeks after operation, around 2 kinds of materials had obvious connective tissue. The histology slice observation, we discovered has connective tissue proliferation, and few inflammatory cell infiltration. And some osteoblast around the material arrangement regulation, around the material had a kind of ossein and the chondroid structure appearance.

术后4W，2种植入材料周围有明显的结缔组织包裹，组织学切片观察，发现有结缔组织增生，其间有炎性细胞浸润，有成骨细胞在材料周围规则排列，有异位成骨趋势，材料周围已有类骨质和软骨样结构出现。

2Cm bone defect was established in ulna of rabbits, the capacity of different therapeutic measures in bone defect repairment was determined in groups A , B (implanted BMP, TGF -β〓 and carrier) and C . It was found that the appearance of osteoblasts and formation of bone union were earlier and the number of osteoblasts more in group B than in group A. The amino acid analysis revealed that the volume of ossein was significantly higher in group B than in group A at the early stage.

分别用bBMP及载体bBMP、TGF-〓及载体和单纯载体修复兔尺骨1.2cm骨缺损的实验模型来比较三者间的成骨效果，结果表明B组比A组成骨细胞出现早、形成数量多、骨连接形成提前，骨胶原氨基酸分析在骨缺损修复早期胶原形成量B组均高于A组，且B组以形成Ⅰ型胶原为主，C组表现为一纤维形成过程。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐