【摘要】 目的建立一种新的宫内窘迫肾损伤动物模型,探讨新生儿窒息后肾损伤的发病机制。方法暴露孕21日Wistar大鼠双角子宫,以无创动脉夹钳夹一侧供应子宫的动脉和血管,时间为10、30 min,取下动脉夹行再灌注,时间分别为30 min,2、6、122、4 h,剖宫取胎鼠,取出胎鼠双侧肾脏,行HE染色和透射电镜观察。结果21日龄胎鼠肾脏尚处于发育中,肾小管的发育成熟程度落后于肾小球;随着缺氧缺血及再灌注时间的延长,肾脏损害逐渐加重,近曲小管的变化出现早且重。结论近足月胎鼠宫内缺氧缺血及再灌注模型可能是研究新生儿宫内窘迫后肾及其他脏器损伤的较理想模型。更多还原

【Abstract】 Objective To establish a newborn animal model of renal injury caused by intrauterine asphyxia and explore the mechanism of renal injury in neonate after asphyxia.Methods After two-horn uterus and vessels supplying uterus and ovary were exposed in 21-day-pregnant Wistar rats,arterial clamp occluded one side of vessels.The occluding time were 10 and 30 minutes.Then arterial clamp was taken off,and reperfusion for 30 minutes,2,6,12 and 24 hours respectively.Reaching prescribed time uterus horn was opened rapidly and pups were removed.The pups sacrificed by decapitation.Kidneys were taken out and studied by HE staining and electron microscope.Results Kidney of fetal rats in 21 gestational age was developmental and mature degree of tubules dropped behind that of glomerule.Changes of proximal tubules were early and serious compared with distal tubules during ischemia and reperfusion stages.Conclusion Ischemia and reperfusion to graded pregnant rat can supply an ideal model to study injury of kidney and other organs(intraute)-rously.更多还原