Glycogen in the epithelium of mucous membranes and skin and its significance.
Glycogen in the epithelium of mucous membranes and skin and its significance.
复制标题
粘膜和皮肤上皮中的糖原及其意义。
DOI:
10.1159/000141788
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发表时间:
1961
期刊:
影响因子:
--
通讯作者:
L. Falin
中科院分区:
文献类型:
--
作者:
L. Falin
Glycogen discovered in 1857 by Cl. Ilernard occurs, as is known, in the proto plasm of numerous animal cells, first of all in liver and skeletal muscles. It represents a stored substance important for energy processes, readily splitting with formation of glucose and producing lactic acid in glycolysis (Stepanenko [1958]). In starvation or intensive muscular work the glycogen in the liver breaks down to glucose or its phosphoric ethers which spread with the blood (low throughout the organism. In muscles glycogen is an important source of energy necessary for the process of muscular contraction. Histochemical investigations have shown that in skeletal muscles glycogen is substantially connected with the anisotropic substance of myo fibrillar in the form of myosin-glycogenic complex playing an essential role in the dynamics of muscular contraction (Rosenfeld [1947. 1948]; Shubitch [1958J). No less is the role of glycogen in the carbohydrate metabolism of nervous tissue (Shabadash 11949)). According to Shabadash. the ability to synthesise glycogen is a primary property of the nerve cell. This is confirmed by the richness in glycogen of nerve cells of many invertebrates (Levinson [1942]). As shown by investigations of Shabadash in higher animals, especially in mammals, the ability to synthesize and accumulate glycogen is peculiar only to motor cells of the spinal cord and brain stem as well as to sensory neurones of spinal ganglia. The cells of cerebral and cere bellar cortex are devoid of glycogen which indicates their shift to another type of carbohydrate metabolism associated with an immediate use of glycose from the surrounding medium (Shabadash). Of considerable interest is the evidence presented by a number of authors w ho showed the role of glycogen in the processes of development and calcification of the osseous tissue (Friedcnstein [1956]) and the hard dental tissues (Harris [1933];