Tang M P, Sims M R, Sampson W J, Dreyer C W
Department of Dentistry, University of Adelaide, SA.
Arch Oral Biol. 1993 Mar;38(3):273-6. doi: 10.1016/0003-9969(93)90040-s.
A continuous tension load of 1.0 N applied to the rat maxillary first molar for 30 min led to a significant increase (p < 0.05) in the mean number of junctions/microns of endothelial perimeter. The mean number of junctions/microns was compared with the mean number of tissue channels/microns 2 as previously reported by fitting linear and quadratic equations. An increase in the mean number of junctions/microns was associated with an increase in mean number of tissue channels/microns 2 (p < 0.01) in control and experimental periodontal ligament. Significant increases in the mean number of junctions/microns occurred in the middle-third zone for venous capillaries (p < 0.01) and in the tooth-third zone for postcapillary-sized venules (p < 0.001). It is concluded that the endothelial junctions of venous capillaries and postcapillary-sized venules provide significant pathways for fluid transport across the tensioned walls of the microvascular bed of the periodontal ligament.
对大鼠上颌第一磨牙施加1.0牛的持续张力负荷30分钟，导致内皮周长每微米的连接数平均值显著增加（p < 0.05）。如先前通过拟合线性和二次方程所报告的那样，将每微米的连接数平均值与每平方微米的组织通道数平均值进行比较。在对照和实验性牙周韧带中，每微米的连接数增加与每平方微米的组织通道数增加相关（p < 0.01）。静脉毛细血管的中三分之一区域（p < 0.01）和毛细血管后大小微静脉的牙三分之一区域（p < 0.001）的每微米连接数平均值显著增加。得出的结论是，静脉毛细血管和毛细血管后大小微静脉的内皮连接为液体跨牙周韧带微血管床的张紧壁运输提供了重要途径。
