Vitreous structure, IV. Chemical composition of the insoluble residual protein fraction from the rabbit vitreous.
Vitreous structure, IV. Chemical composition of the insoluble residual protein fraction from the rabbit vitreous.
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玻璃体结构，IV。
DOI：
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
J. Caulfield
中科院分区：
文献类型：
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作者：
D. Swann;I. Constable;J. Caulfield
对兔玻璃体中结构蛋白的分析表明，羟脯氨酸含量为3.1%（w/w），而从牛身上获得的同等样品的含量为10.9%（w/w）。与牛玻璃体中的离散纤维相反，兔成分作为直径为15至20微米的原纤维聚集体出现。氨基酸和碳水化合物的组成是类似的血管基膜和分离的馏分含有大量的棕榈酸和硬脂酸。这些数据表明，不同物种的玻璃体结构的变异性不仅是定量的，而且是定性的。这表明，在兔子中，结构蛋白可能主要来自萎缩的玻璃体系统，并且在该动物中几乎没有（如果有的话）发生次生玻璃体形成。
Analysis of the structural proteins in the rabbit vitreous showed that the hydroxyproline content was 3.1 per cent w/w compared to a value of 10.9 per cent w/w for equivalent samples obtained from cattle. In contrast to the discreet fibers in bovine vitreous, the rabbit constituents occur as an aggregate of fibrils with a diameter of 15 to 20 å. The amino acid and carbohydrate composition was similar to vascular basement membrane and isolated fractions contained significant amounts of palmitic and stearic acids. The data indicate that the variability of vitreous structure in different species is not only quantitative, but also qualitative. It is suggested that in the rabbit the structural proteins may be derived primarily from the atrophied hyaloid system and that little, if any, secondary vitreous formation occurs in this animal.