Foliguet B, Puchelle E
Bull Eur Physiopathol Respir. 1986 Jan-Feb;22(1):43-7.
The apical structure of human respiratory cilia was studied using thin and thick sectioning techniques. The distal end of the mature cilium is narrowed and presents dense material and a crown-shaped glycocalyx. The crown is composed of three to seven bristles, having a mean length of 31 nm and showing a periodic structure. The capping structure of the apical part of human respiratory cilia is composed of a plate and an electron-dense cap tightly bound to the central and to each of the nine peripheral A microtubules. Lateral spokes link the peripheral microtubules to the internal ciliary plasma membrane and dense filaments radiate from the dense cap to the ciliary crown. These ciliary apical structures may be involved in several functions associated with microtubule assembly as well as ciliary movement and mucociliary transport.
采用薄切片和厚切片技术对人呼吸道纤毛的顶端结构进行了研究。成熟纤毛的远端变窄，呈现致密物质和冠状糖萼。冠由三到七根刷毛组成，平均长度为31纳米，并呈现出周期性结构。人呼吸道纤毛顶端部分的帽状结构由一个板和一个紧密结合在中央微管和九根外周A微管中的每一根上的电子致密帽组成。侧辐将外周微管连接到纤毛内部的质膜，致密细丝从致密帽辐射到纤毛冠。这些纤毛顶端结构可能参与了与微管组装以及纤毛运动和黏液纤毛运输相关的多种功能。
