前列腺素E1对新生大鼠缺氧缺血性脑损伤的保护作用

目的探讨外源性前列腺素E1(PGE1)对缺氧缺血新生大鼠脑组织超氧化物歧化酶(SOD)和NO水平的影响。方法选用7日龄Wistar大鼠60只,制备缺氧缺血性脑损伤(HIBD)模型后注射PGE1及川芎嗪(TMP)。缺氧缺血后48h处死,取大脑皮质,制作脑组织匀浆,检测脑组织SOD、NO水平。结果HIBD组脑组织SOD水平低、NO水平高,同正常组对比均有显著差异(P均<0.01),PGE1、TMP治疗组SOD水平高、NO水平低,同HIBD组相比均有显著差异(P均<0.01)。结论PGE1可通过血脑脊液屏障使大脑皮质SOD水平升高,NO水平降低,对HIBD有防治作用。

Protective Effects of Prostaglandin E1 on Newborn Rats with Hypoxic- ischemic Brain Damage

Objective To study the effect of exogenous prostaglandin E 1 (PGE 1) on the superoxide dismutase(SOD) and nitric oxide(NO) levels in brain tissue of neonatal rats with hypoxic-ischemic brain damage(HIBD).Methods Sixty 7-day old newborn Wistar rats to establish HIBD models,intraperitoneally and subcutaneous injected PGE 1 and TMP,then the rats were killed after hypo- xia and ischemia for 48 hours.Take cerebral cortex of arteria carotis ligation side and made them into homogenate to detect SOD and NO levels in brain tissue.Results SOD level in HIBD group was lower,and NO level was higher than those of normal group(P< 0.01),SOD levers of PGE 1 group and TMP group were much higher,and NO lever were lower,they were significantly different with those of HIBD group and normal saline group(P<0.01).Conclusion PGE 1 and TMP can pass through the blood-cerebral barrier and promote the levels of SOD and NO in cerebral cortex,So it has preventive and curative effect on HIBD.