Sato A, Miyoshi S
Department of Oral Anatomy I, Fukuoka Dental College, Japan.
Eur J Morphol. 1996 Aug;34(3):225-8. doi: 10.1076/ejom.34.3.225.13031.
We report the tuft cells in the main excretory duct epithelia of rat salivary glands. These cells exhibit similar fundamental characteristics in the salivary glands and in other organs. However, numerous membrane-bound electron-dense granules are present among the microvilli of the tuft cells in the submandibular gland, but not in other organs. The apical cytoplasm contains numerous vesicles with a filamentous substance that reacts positively for glycoconjugates. The vesicles frequently are close to the apical plasma membrane and seem to open into the lumen. Nerve endings with synaptic vesicles are seen close to the basal portion of the tuft cells. The ratio of the tuft cells to principal cells is highest in the submandibular gland and lowest in the sublingual gland. The functions of the tuft cells in the salivary glands are suggested to be secretion, absorption, and reception.
我们报道了大鼠唾液腺主排泄管上皮中的簇状细胞。这些细胞在唾液腺和其他器官中表现出相似的基本特征。然而，下颌下腺簇状细胞的微绒毛之间存在大量膜结合的电子致密颗粒，而其他器官中则没有。顶端细胞质中含有许多带有丝状物质的囊泡，这些丝状物质对糖缀合物呈阳性反应。这些囊泡经常靠近顶端质膜，似乎通向管腔。在簇状细胞基部附近可见带有突触小泡的神经末梢。簇状细胞与主细胞的比例在下颌下腺中最高，在舌下腺中最低。唾液腺中簇状细胞的功能被认为是分泌、吸收和感受。
