体内和体外发育中大鼠磨牙釉质中33P与45Ca分布的比较。

Comparison of 33P with 45Ca distribution in developing rat molar enamel in vivo and in vitro.

作者信息

Wennberg A, Bawden J W

出版信息

J Dent Res. 1978 Jan;57(1):111-7. doi: 10.1177/00220345780570010301.

DOI:10.1177/00220345780570010301

Abstract

The distribution of 45Ca and 33P in developing rat molar enamel has been studied using freeze sectioning and autoradiographic methods. The distribution patterns of the two tracers in vivo were dissimilar. The use of in vitro methods showed that flux of 33P into enamel is not influenced by the cells of the enamel organ. It is suggested that the factors controlling movement of calcium and phosphorus into mineralizing enamel may be similar to those proposed for bone.

摘要

利用冷冻切片和放射自显影方法，研究了45Ca和33P在发育中的大鼠磨牙釉质中的分布。两种示踪剂在体内的分布模式不同。体外实验方法表明，33P进入釉质的通量不受釉器细胞的影响。有人提出，控制钙和磷进入矿化釉质的因素可能与影响骨的因素相似。