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胎盘超微结构
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  placental ultrastructure
     A Morphological Study of the Placental Ultrastructure Changes in Pregnancy after 40 Weeks with Postmaturity Syndrome
     妊娠40周后伴胎儿过熟综合征胎盘超微结构电镜观察
短句来源
     Studies of the Placental Ultrastructure in Rats with Intrahepatic Cholestasis of Pregnancy
     孕鼠肝内胆汁淤积症的胎盘超微结构研究
短句来源
     A study on the placental ultrastructure in gestational diabetes mellitus
     妊娠期糖尿病患者胎盘超微结构的研究
短句来源
     Objective:To explore the changes of the morphology of the placental ultrastructure with Intrahepatic Cholostasis of pregnancy(ICP)under acute hypoxia conditions.
     目的:观察急性缺氧时妊娠期肝内胆汁淤积症(Intrahepaticcholestasisofpregnancy,ICP)胎盘超微结构的变化。
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  “胎盘超微结构”译为未确定词的双语例句
     Objectives To investigate effect of therapeutic dosage for hyberbaric oxygen (HBO) on lipid peroxidation (LPO) of normal pregnant rabbits and fetal rabbits, and ultrastructure of placenta, so as to present the theory of using HBO safely in clinical obstetrics.
     目的 通过研究治疗剂量高压氧对正常孕兔、胎兔体内脂质过氧化指标和胎盘超微结构的影响,为产科临床安全应用高压氧提供理论依据。
短句来源
     Objective The cytotoxic effect of bile acids on trophoblast and fetal development in intrahepatic cholestasis of pregnancy(ICP) were studied through the observation of ultrastructure changes and expression of epidermal growth factor receptor(EGFR) of placenta.
     目的 观察妊娠肝内胆汁淤积症 (intrahepaticcholestasisofpregnancy ,ICP)胎盘超微结构病理改变和表皮生长因子受体 (EGFR)的表达 ,研究胆汁酸对滋养细胞的毒性作用及其对胎儿生长发育的影响。
短句来源
     Objective:To study the ultrastructural changes in placenta of Intrahepatic Cholestasis of Pregnancy(ICP) and to investigate the reasons of intrauterine growth retardation and intrauterine fetal death in ICP.
     目的 :研究妊娠期肝内胆汁淤积症 (ICP)胎盘超微结构改变 ,探讨ICP时胎儿宫内生长不良及死亡原因。
短句来源
     Serum NO increased significanlty, but ultra-structure of placental villi had no improvement after NG treatment.
     用硝酸甘油后NO 明显增加,胎盘超微结构无明显改善。
短句来源
     Study of ultrastructure and expression of epidermal growth factor receptor in placenta in intrahepatic cholestasis of pregnancy
     妊娠肝内胆汁淤积症胎盘超微结构及其表皮生长因子受体表达的研究
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     Effects of alcohol drinking on the ultrastructure of human placenta
     嗜酒对胎盘超微结构的影响
短句来源
     A study on the placental ultrastructure in gestational diabetes mellitus
     妊娠期糖尿病患者胎盘超微结构的研究
短句来源
     Study on Ultrastructure of Benign and Malignant Pheochromocytoma
     嗜铬细胞瘤的超微结构
短句来源
     A Study on the Ultrastructure of Chondroblastoma
     软骨母细胞瘤的超微结构
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     Placenta site nodules and plaques
     胎盘部位结节
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Electron microscopic studies of placental tissues from ten cases were presented. Three specimens were taken from full-term normal placentas and seven from placentas of pre-eclamptic patients at term. The ultrastructure of chorionic villi of both normal and pre-eclamptic placentas was examined. The difference between the normal and pathological structures revealed in our work and that of the other authors were analyzed, and suggested that the proliferation of cytotrophoblastic cells of the placental villi in...

Electron microscopic studies of placental tissues from ten cases were presented. Three specimens were taken from full-term normal placentas and seven from placentas of pre-eclamptic patients at term. The ultrastructure of chorionic villi of both normal and pre-eclamptic placentas was examined. The difference between the normal and pathological structures revealed in our work and that of the other authors were analyzed, and suggested that the proliferation of cytotrophoblastic cells of the placental villi in the pre-eclamptic placenta was probably the effect of tissue anoxia. On the free surfaces of syncytial cells, fibrous deposition was sccn and the basal membrane of these cells was thickened. In the tissues where the fibrous deposition was prevalent, there were changes in the structure of syncytial cells, and reduction in organcllcs and microvilli. On the fetal side, changes in the endothelial cells such as cellular swelling, reduction of organcllcs, increase in intracellular filaments and shortage of sinocytosis were shown. All of these changes mentioned above, may affect the function of normal nutrient exchanges in the placenta.

本文观察了10例(3例正常足月与7例先兆子癇)胎盘的超微结构,对正常足月胎盘绒毛与先兆子癇胎盘绒毛的超微结构进行了描述。复习有关文献并从正常和病理方面与有关研究资料进行了初步的对比分析。从两者结构方面存在的差别,提示先兆子癇胎盘绒毛细胞滋养层细胞增生,为缺氧的结果。在合体细胞游离面有纤维蛋白样物质沉着处,基底膜往往同时增厚。凡有纤维蛋白样物质沉着的地方合体细胞有改变,细胞器减少,微绒毛减少。胎儿毛细血管内皮细胞肿胀,胞质内细胞器减少,原纤维增多,胞饮减少。这些改变可能使胎盘运输的功能和物质交换量受到影响。

Eight cases of preeclampsia-eclampsia were studied under EM forultrastructural alterations and compared with that of normal gestational cases.Main charges of placentae are: significant degeneration of syneytiotrophoblas(?)cells, considerable hyperplasia of cytotrophoblast cells, thickening of basaimembrane beneath trophoblast layer and deposit of fibroid substances betweenbasal surface, swollen endothelia of capillaries in villous stroma and narrowedlumens of capillaries.

8例先兆子痫胎盘绒毛的超微结构变化是合体滋养细胞退行性变,细胞滋养细胞增生。滋养层下的基底膜增厚,类纤维蛋白沉着及绒毛间质内的毛细血管肿胀,管腔变小等,以目前较流行的关于本病病因的子宫胎盘缺血及弥漫性血管内凝血学说可较合理地解释先兆子痫时胎盘超微结构所见为缺氧所致。

Autodesmosomes is one kind of the desmosomes, it is formed from two different parts of plasma membrane in the same cell. Under EM we found that there are autodesmo-somes on the free surface and the basal plasma membrane of the syncytium of the chorio-nic villi in human placenta at term, but could not found it on the Langhans'cells. The origin and the significance of the autodesmosomes in human placenta remain obscure,

自体桥粒是桥粒的一种。它是由同一个细胞的两个不同部份的质膜所构成。在利用电镜研究人足月妊娠胎盘的超微结构时,我们发现,在合体细胞的自由表面及底部质膜有自体桥粒存在。Langhans细胞则不含有自体桥粒。有关胎盘内自体桥粒的来源及其重要性,仍有待进一步的研究。

 
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