Histological review of the human cellular cementum with special reference to an alternating lamellar pattern
Histological review of the human cellular cementum with special reference to an alternating lamellar pattern
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人类细胞牙骨质的组织学审查，特别参考交替层状模式
DOI：
10.1007/s10266-010-0134-3
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Amizuka N
中科院分区：
文献类型：
--
作者：
Yamamoto T.;Li M.;Liu Z.;Guo Y.;Hasegawa T.;Masuki H.;Suzuki R.;Amizuka N
牙骨质是以胶原纤维为主要有机成分的矿化组织，大致可分为脱细胞牙骨质和细胞牙骨质。后者通常由细胞内纤维牙骨质层堆叠而成，在光镜下观察，其中强染色和弱染色的层片（每个约2.5 μm厚）交替出现。有人认为，交替的层状图案的内在纤维排列的周期性变化的结果，但由于观察三维原纤维排列的困难，细节直到最近才被理解。NaOH浸渍法已被开发来克服这一困难。在过去的二十年里，我们已经研究了牙骨质的结构和发展，通过扫描电子显微镜使用NaOH浸渍，以及通过光和透射电子显微镜，并积累了大量的数据，牙骨质的结构和形成。根据这些数据，我们得出以下结论：（1）交替层状模式符合扭曲胶合板模型，其中胶原原纤维沿同一方向规则旋转，形成两种交替类型的层状结构，一种由横向和几乎横向切割的原纤维组成，另一种由纵向和几乎纵向切割的原纤维组成。(2)内在纤维排列的发育可能受成牙骨质细胞的控制;成牙骨质细胞同步和周期性地移动指状突起，以在内在纤维排列中产生交替变化，并且这种动态序列导致交替的层状图案。
Cementum is mineralized tissue with collagen fibrils as its major organic component, and it can be roughly classified into acellular and cellular cementum. The latter generally consists of a stack of cellular intrinsic fiber cementum layers, in which intensely and weakly stained lamellae (each about 2.5 μm thick) alternate in light microscopic observations. It has been suggested that the alternate lamellar pattern results from periodic changes of the intrinsic fiber arrangement, but owing to the difficulty of observing the fibril arrangement three dimensionally, details were not understood until recently. The NaOH-maceration method has been developed to overcome this difficulty. For the past two decades, we have studied the structure and development of cementum by scanning electron microscopy using NaOH-maceration, as well as by light and transmission electron microscopy, and have accumulated a significant amount of data with regard to the structure and formation of cementum. In light of these data, we have arrived at the following conclusions: (1) The alternate lamellar pattern conforms to the twisted plywood model, in which collagen fibrils rotate regularly in the same direction to form two alternating types of lamellae; one type consists of transversely and almost transversely cut fibrils and the other consists of longitudinally and almost longitudinally cut fibrils. (2) The development of the intrinsic fiber arrangement may be controlled by cementoblasts; the cementoblasts move finger-like processes synchronously and periodically to create alternate changes in the intrinsic fiber arrangement, and this dynamic sequence results in the alternate lamellar pattern.
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人类牙齿高级细胞牙骨质形成中纤维排列的调节。
影响因子：
3.5
作者：
T. Yamamoto;T. Domon;S. Takahashi;N. Islam;R. Suzuki;M. Wakita
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
3.5
作者：
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DOI：
--
发表时间：
1987
期刊：
Archivum histologicum Japonicum = Nihon soshikigaku kiroku
影响因子：
--
作者：
O. Ohtani
通讯作者：
O. Ohtani