Sato A, Miyoshi S
First Department of Oral Anatomy, Fukuoka Dental College, Japan.
Anat Rec. 1990 Mar;226(3):288-94. doi: 10.1002/ar.1092260304.
This study investigated the relationship between the fine structure of the main excretory duct (MED) epithelia and the subepithelial capillaries of the major salivary glands (parotid, submandibular, and sublingual) in the rat. The MED subepithelial capillaries vary in type (fenestrated and continuous), number of fenestrae present in the available fenestrated endothelium (the attenuated area of endothelium), and number of capillaries per unit length of epithelium. In the parotid gland, continuous capillaries predominate, and the capillary density per 200 microns of epithelium (1.73 in region I and 1.03 in region II) is lower than in the other two glands, as is the number of fenestrae per 10 microns of available endothelium (1.97 in region I and 1.25 in region II). The submandibular gland has mainly fenestrated capillaries. The capillary density per 200 microns of epithelium (4.46 in region I and 5.51 in region II) is higher than in the other two glands, as is the number of fenestrae per 10 microns of available endothelium (4.82 in region I and 7.90 in region II). Similarly, in the sublingual gland, fenestrated capillaries are dominant. The density of capillaries per 200 microns of epithelium (4.15 in region I and 4.31 in region II) is intermediate between the parotid and submandibular glands, as is the number of fenestrae per 10 microns of available endothelium (2.98 in region I and 3.83 in region II).
本研究调查了大鼠主要唾液腺（腮腺、下颌下腺和舌下腺）主排泄管（MED）上皮的精细结构与上皮下毛细血管之间的关系。MED上皮下毛细血管在类型（有孔型和连续型）、可用有孔内皮中存在的窗孔数量（内皮的变薄区域）以及每单位长度上皮的毛细血管数量方面存在差异。在腮腺中，连续毛细血管占主导，每200微米上皮的毛细血管密度（I区为1.73，II区为1.03）低于其他两个腺体，每10微米可用内皮的窗孔数量（I区为1.97，II区为1.25）也低于其他两个腺体。下颌下腺主要是有孔毛细血管。每200微米上皮的毛细血管密度（I区为4.46，II区为5.51）高于其他两个腺体，每10微米可用内皮的窗孔数量（I区为4.82，II区为7.90）也高于其他两个腺体。同样，在舌下腺中，有孔毛细血管占主导。每200微米上皮的毛细血管密度（I区为4.15，II区为4.31）介于腮腺和下颌下腺之间，每10微米可用内皮的窗孔数量（I区为2.98，II区为3.83）也介于腮腺和下颌下腺之间。
