去神经支配后壶腹电感受器器官的快速退化。
Rapid degeneration of ampullary electroreceptor organs after denervation.
作者信息
Szamier R B, Bennett M V
出版信息
J Cell Biol. 1973 Feb;56(2):466-77. doi: 10.1083/jcb.56.2.466.
Abstract
Electroreceptors (ampullary organs) of the transparent catfish (Kryptopterus bicirrhus) lie in the epidermis, and contain spherical receptor cells that receive purely afferent innervation from the lateral line nerve. Section of this nerve causes rapid degenerative changes to occur in the receptors. Fine structural alterations occur in the receptor cell synapses and nerve fiber 6-12 h postoperatively. Disruption of the receptor cells begins by 18 h and most are lost by 48 h. By 72 h supporting cells and secretory cells also show marked degeneration, and by 96 h they may be totally lost. The rapid degeneration of the electroreceptor organs of Kryptopterus should make them a useful preparation for analysis of neurotrophic functions.
摘要
透明鲶鱼（双须缺鳍鲶）的电感受器（壶腹器官）位于表皮，包含球形的感受器细胞，这些细胞接受来自侧线神经的纯传入神经支配。切断这条神经会导致感受器迅速发生退行性变化。术后6 - 12小时，感受器细胞突触和神经纤维会出现细微的结构改变。感受器细胞在18小时开始破坏，到48小时大多数会消失。到72小时，支持细胞和分泌细胞也显示出明显的退化，到96小时它们可能完全消失。双须缺鳍鲶电感受器器官的快速退化应使其成为分析神经营养功能的有用标本。
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