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首页> 外文期刊>European Journal of Histochemistry >Neuronal intermediate filaments in the developing tongue of the frog Rana esculenta
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Neuronal intermediate filaments in the developing tongue of the frog Rana esculenta

机译：青蛙蛙蛙舌中神经元中间丝

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摘要

The expression of several neuronal intermediate filament (NIF) proteins was investigated in the tongue of metamorphosing tadpoles (stage 38-45 of Gosner) and in adult individuals of the frog, Rana esculenta by means of immunohistochemistry. Results showed that nerve fibres at early stages of tongue development expressed peripherin (a NIF protein usually found in differentiating neurones) as well as the light- and medium molecular weight NIF polypeptide subunits (NF-L and NF-M, respectively); in the adult frog, peripherin was still found in nerve fibres reaching the fungiform papilla together with NF-M, but NF-L immunoreactivity was absent therein. Clusters of epithelial cells expressing peripherin were found in the early developing tongue before differentiation of taste organs, and NF-L and NF-H immunoreactivities were present in basal (Merkel) cells of the adult frog taste disc. Results indicate that neurones innervating the adult frog's taste disc maintain a certain plasticity in their cytoskeleton and that neuronal-like cells are present in the undifferentiated and differentiated tongue epithelium possibly playing a role in the developing and mature taste organ.
机译：通过免疫组织化学研究了几种neuro神经元中间丝（NIF）蛋白在变态t（Gosner的38-45期）和成年蛙蛙中的表达。结果表明，舌头发育早期的神经纤维表达了外周蛋白（一种通常存在于分化神经元中的NIF蛋白）以及轻中分子量NIF多肽亚基（分别为NF-L和NF-M）。在成年青蛙中，在与真菌乳头一起到达真菌状乳头的神经纤维中仍发现有外周蛋白，但其中没有NF-L免疫反应性。在味觉器官分化之前的早期发育舌头中发现了表达外周蛋白的上皮细胞簇，成年青蛙味觉盘的基底细胞（Merkel）中存在NF-L和NF-H免疫反应性。结果表明，支配成年青蛙味觉盘的神经元在其细胞骨架中保持一定的可塑性，未分化和分化的舌头上皮中存在神经元样细胞，可能在发育和成熟的味觉器官中起作用。

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