The differentiation between neuroglia and connective tissue sheath in the cockroach (Periplaneta americana)

The differentiation between neuroglia and connective tissue sheath in the cockroach (Periplaneta americana)
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蟑螂神经胶质细胞和结缔组织鞘的分化(美洲大蠊)

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发表时间:
1939
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通讯作者:
B. Scharrer
B. Scharrer
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作者:
B. Scharrer

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关于昆虫中枢神经系统的支持组织(神经胶质),我们知之甚少。只有少数调查的西班牙学校(卡哈尔和SBnchez,'15; SBnchez y Sdnchez,'35)处理更广泛的问题,主要是在高尔基准备和以下结果的基础上:1。与Haller('05)对(合胞体)“神经胶质”的描述相反,昆虫神经节中的神经胶质由独立的细胞成分组成。2.除了上皮胶质细胞(相当于室管膜)外,还存在一种真正的神经胶质细胞,可与脊椎动物的星形胶质细胞相比较。然而,一般来说,在论述不同昆虫类群的中枢神经系统的论文中,人们发现只有少数关于支持组织的偶然陈述。在大多数这些研究中,中枢神经系统的非神经成分所用的命名法不统一。特别是神经胶质细胞本身和结缔组织成分之间的明确区分通常缺乏。在一些论文中(例如纳尔逊,'24),我们遇到了术语“外神经膜”的鞘周围的神经节,
There is comparatively little known concerning the supporting tissue (neuroglia) of the central nervous system of insects. Only a few investigations of the Spanish school (Cajal and SBnchez, ’15; SBnchez y Sdnchez, ’35) deal more extensively with the problem mainly on the basis of Golgi preparations and with the following results : 1. In contrast to Haller’s description ( ’05) of a (syncytial) ‘Neuroglianetz,’ the glia in the insects’ ganglia consists of independent cell elements. 2. Besides an epithelial glia (corresponding to the ependyma) there exists a genuine neuroglia which can be compared with the astrocytes of the vertebrates. I n general, however, one finds in papers dealing with the central nervous system of different groups of insects only a few occasional statements concerning the supporting tissue. In the majority of these studies there is no uniformity as to the nomenclature used for the non-nervous constituents of the central nervous system. Particularly a clear differentiation between neuroglia proper on one hand and connective tissue elements on the other is generally lacking. In some papers (for instance Nelson, ’24) we encounter the terms ‘outer iieurilemma’ for the sheath surrounding the ganglia and