COLLAGEN FIBRIL MORPHOLOGY IN DEVELOPING CHICK METATARSAL TENDONS .1. X-RAY-DIFFRACTION STUDIES
COLLAGEN FIBRIL MORPHOLOGY IN DEVELOPING CHICK METATARSAL TENDONS .1. X-RAY-DIFFRACTION STUDIES
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DOI：
10.1016/0141-8130(82)90063-0
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发表时间：
1982-01-01
影响因子：
8.2
通讯作者：
PARRY, DAD
中科院分区：
文献类型：
--
作者：
EIKENBERRY, EF;BRODSKY, B;PARRY, DAD
水合胚胎鸡跖腱的低角度赤道 X 射线衍射 (R.simeq. 30.mu.m-1) 包含成熟腱中未见的最小值和最大值。这种衍射源自无序排列的平行圆柱形胶原原纤维，其直径小而均匀，构成了该组织的主要部分。将最小值和最大值的位置与圆柱体阵列中预期的位置进行比较，可以估计圆柱体的平均直径和平均中心到中心最近邻间距。在胎儿 13-19 天的年龄范围内，平均直径从 .apprx 增加。 46 至 .apprx。 58 nm，而平均最近邻间距保持恒定为 .apprx。 90纳米。对 17 天胎儿肌腱的 X 射线强度分布的详细分析表明，存在原纤维直径的稀疏分散分布，其中有 2 个或多个间隔 10-12 nm 的优选直径的离散群体。
The low angle equatorial X-ray diffraction (R .simeq. 30 .mu.m-1) from hydrated embryonic chick metatarsal tendon contains minima and maxima that are not seen in mature tendons. This diffraction derives from the disordered array of parallel, cylindrical fibrils of collagen of small, uniform diameter that comprise the major part of this tissue. Comparison of the positions of the minima and maxima with those expected from an array of cylinders allows estimation of the mean diameter of the cylinders and the average center-to-center nearest neighbor separation. In the age range from 13-19 days fetal, the mean diameter increased from .apprx. 46 to .apprx. 58 nm, whereas the mean nearest neighbor separation remained constant at .apprx. 90 nm. Detailed analysis of the X-ray intensity profile of a 17-day fetal tendon indicated the presence of a paucidisperse distribution of fibril diameter with 2 or more discrete populations of preferred diameters separated by 10-12 nm.