MULTICOMPOSITE STRUCTURE OF TENDON
MULTICOMPOSITE STRUCTURE OF TENDON
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DOI：
10.3109/03008207809152283
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发表时间：
1978-01-01
影响因子：
2.9
通讯作者：
BAER, E
中科院分区：
文献类型：
--
作者：
KASTELIC, J;GALESKI, A;BAER, E
提出了一种肌腱卷曲结构的修正形态学模型。成年大鼠尾巴直径为300 - 500微米的肌腱由1到10多个直径为80 - 320微米的亚结构组成，这些亚结构被称为肌束。每个肌束在偏光显微镜下都具有可观察到的卷曲结构，并且肌腱内相邻的肌束通常呈现卷曲配准。研究表明，肌束本身是由直径为500 - 5000埃的平面锯齿状卷曲的胶原纤维组成的圆柱形排列。通过扫描电子显微镜（SEM）和偏光光学显微镜证明了肌束近似的圆柱对称性。采用一种用折射率接近胶原蛋白的其他液体替代天然水的方法，以减少或消除光的散射，从而极大地改善了光学显微镜（OM）的观察效果。从肌腱中取出的小束胶原纤维呈现出简单的平面锯齿状形态。通过小角度X射线衍射验证了胶原纤维的平面卷曲以及它们组装成圆柱对称肌束的过程。
A revised morphological model for the crimp structure of tendon is presented. The 300-500 .mu. diameter tendons of the mature rat tail are comprised of from 1 to more than 10 substructures, called fascicles, of 80-320 .mu. diameter. Fascicles each possess a crimp structure demonstrable in the polarizing microscope and neighboring fascicles within a tendon usually exhibit crimp registry. The fascicle itself is shown to be a cylindrical array of planar-zig-zag crimped 500-5000 .ANG. diameter collagen fibrils. The approximate cylindrical symmetry of the fascicle is demonstrated by SEM [scanning electron microscope] and polarizing optical microscopy. A method of replacing native water with other liquids of refractive index near to that of collagen is utilized to reduce or eliminate light diffusion and thereby greatly improve OM [optical microscope] observations. Small bunches of collagen fibrils from the tendon exhibit simple planar zig-zag morphology. The planar crimping of collagen fibrils and their assembly into cylindrically symmetric fascicles is verified by small angle X-ray diffraction.