el-Labban N G, Aghabeigi B
Institute of Dental Surgery, Eastman Dental Hospital, London, England.
J Oral Pathol Med. 1990 Nov;19(10):442-6. doi: 10.1111/j.1600-0714.1990.tb00784.x.
Blood vessels were investigated both stereologically and ultrastructurally in keratocyst and dentigerous cyst. The volume and surface densities of blood vessels in 15 keratocysts and dentigerous cysts were analyzed stereologically. No significant differences were found between them using these parameters, suggesting that their overall vascularity may be similar. However, the ultrastructural study showed marked differences between blood vessels in these two types of cysts. It was observed that fenestrated capillaries were found only in keratocysts. In addition, degeneration of endothelial lining associated with thrombosis was also a prominent feature of this cyst. While ruptured endothelium, narrow lumen and Weibel-Palade bodies were characteristic of vessels in dentigerous cyst. The presence of fenestrated capillaries in keratocyst and not in dentigerous cyst might indicate a rapid transfer of fluid to meet the demand of the relatively active proliferating epithelium, which may be promoted by growth factors released from platelets in those thrombosed vessels.
对角化囊肿和含牙囊肿的血管进行了体视学和超微结构研究。采用体视学方法分析了15例角化囊肿和含牙囊肿中血管的体积和表面密度。使用这些参数未发现它们之间有显著差异，这表明它们的总体血管分布可能相似。然而，超微结构研究显示这两种囊肿的血管之间存在明显差异。观察到仅在角化囊肿中发现有窗孔毛细血管。此外，与血栓形成相关的内皮衬里变性也是该囊肿的一个突出特征。而内皮破裂、管腔狭窄和魏-帕小体是含牙囊肿血管的特征。角化囊肿中有窗孔毛细血管而含牙囊肿中没有，这可能表明液体的快速转运以满足相对活跃的增殖上皮的需求，这可能由那些血栓形成血管中血小板释放的生长因子所促进。
