首页> 外文期刊>Research communications in molecular pathology and pharmacology >Effects of selective and non-selective endothelin antagonists on ischemia-reperfusion damage in the isolated perfused murine liver.
【24h】

Effects of selective and non-selective endothelin antagonists on ischemia-reperfusion damage in the isolated perfused murine liver.

机译:选择性和非选择性内皮素拮抗剂对离体灌流小鼠肝脏缺血再灌注损伤的影响。

获取原文
获取原文并翻译 | 示例
       

摘要

The objective of the present study was to clarify the differential effects of endothelinA (ETA) and ETB antagonism in the early phase of ischemia-reperfusion damage. Male Sprague Dawley rats were randomly divided into 4 groups: control (n = 10), bosentan (40 nM; n = 10), BQ-485 (20 nM; n = 10), and BQ-788 (50 nM; n = 10) to compare the effects of ETA or ETB or both ETA and ETB antagonists against the warm ischemia-reperfusion damage of murine livers. Isolated livers were perfused with oxygenated Krebs-Henseleit bicarbonate buffer solution and ET antagonists for 30 min before inducing warm ischemia (non-recirculating system). After 40 min without perfusate, measurements (portal pressure, O2 tensions of influent and effluent perfusate, liver enzymes, etc.) were taken up to 60 min after reperfusion. The BQ-788 group had significantly more liver damage than did the other groups, and more O2 consumption than did the bosentan group. BQ-485 and bosentan were more protective at some points after reperfusion. Antagonism of only the ETB receptors is detrimental, but antagonism of the ETA receptors appears to have a role in protecting the liver from warm ischemia-reperfusion damage in the early phase.
机译:本研究的目的是阐明在缺血再灌注损伤的早期阶段内皮素(ETA)和ETB拮抗作用的差异作用。将雄性Sprague Dawley大鼠随机分为4组:对照组(n = 10),波生坦(40 nM; n = 10),BQ-485(20 nM; n = 10)和BQ-788(50 nM; n = 10)比较ETA或ETB或ETA和ETB拮抗剂对小鼠肝脏热缺血-再灌注损伤的作用。在诱发温暖的局部缺血(非循环系统)之前,将分离的肝脏用含氧的Krebs-Henseleit碳酸氢盐缓冲溶液和ET拮抗剂灌注30分钟。在没有灌注液的情况下40分钟后,在再灌注后60分钟内进行测量(入口压力,进水和出水灌注液的O2张力,肝酶等)。 BQ-788组的肝损伤比其他组明显多,并且消耗的氧气比波生坦组更多。 BQ-485和波生坦在再灌注后的某些时候更具保护作用。仅ETB受体的拮抗作用是有害的,但是ETA受体的拮抗作用似乎在早期保护肝脏免受温暖的局部缺血-再灌注损伤中起作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号