论文部分内容阅读
本文选择8例过期妊娠胎盘进行超微结构观察，其改变主要有合体细胞微绒毛形态不规则，微绒毛变矮，部分区域微绒毛稀少，甚至消失。合体细胞浆内粗面内质同明显扩张，吞饮泡减少，线粒体的体积缩小，数量减少。局灶性的合体细胞坏死及细胞滋养层细胞增生。绒毛间质水肿，血管内皮细胞收缩并向腔内突出而导致管腔变小，纤维组织增生以及滋养层基底膜与血管基底膜之；司出现大小不一的囊泡。上述改变都影响到母子血液进行物质交换和胎儿的发育。此外对上述改变的发时机理进行一厂初步探讨。
In this paper, 8 cases of obstetric ectopic pregnancy placentae were observed ultrastructural changes, the main changes are the irregular shape of micro-villi of syncytial cells, microvilli become short, some areas of microvilli sparse, or even disappear. The syncytial cytoplasm of rough surface endoplasm with significant expansion, swallow to drink less, the mitochondrial volume reduced, the number decreased. Focal conjunctival necrosis and cytotrophoblast hyperplasia. Villus interstitial edema, vascular endothelial cells shrink and protrude to the lumen and lead to smaller lumen, fibrous tissue proliferation and trophoblast basement membrane and vascular basement membrane; Division appeared different sizes of vesicles. The above changes affect the exchange of maternal and child blood and fetal development. In addition, the mechanism of the above mentioned changes was discussed in the first factory.