...
首页> 外文期刊>Experimental Biology and Medicine: Journal of the Society for Experimental Biology and Medicine >Functional expression of human heme oxygenase-1 gene in renal structure of spontaneously hypertensive rats.
【24h】

Functional expression of human heme oxygenase-1 gene in renal structure of spontaneously hypertensive rats.

机译:人血红素加氧酶-1基因在自发性高血压大鼠肾脏结构中的功能表达。

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Heme oxygenase (HO), by catabolizing heme to bile pigments, regulates the levels and activity of cellular hemoprotein and HO activity. We examined the effect of delivery of the human HO-1 gene on cellular heme in renal tissue using a retroviral vector. We used a single intracardiac injection of the concentrated infectious viral particles in 5-day-old spontaneously hypertensive rats; 25 were transduced with empty vector and 25 were transduced with the human HO-1 gene. Functional expression of human and rat HO-1 was measured after 2 and 4 weeks. Reverse transcription polymerase chain reaction showed that human HO-1 mRNA was expressed as early as 2 weeks, with the highest levels in the kidney. Western blot analysis showed distribution of human HO-1 protein in rat kidney structures, predominantly in the thick ascending limb of the loop of Henle as well as in proximal tubules and preglomerular arterioles. These areas also demonstrated higher HO activity as measured by increased conversion of heme to bilirubin and carbon monoxide. Functional expression of the human HO-1 gene was associated with a decrease in blood pressure in 4- and 8-week-old spontaneously hypertensive rats. Compared with nontransduced rats, human HO-1 gene overexpression in transduced rats was associated with a 35% decrease in urinary 20-hydroxyeicosatetraenoic acid, a potent vasoconstrictor and an inhibitor of tubular Na(+) transport, which may be related to the decrease in blood pressure.
机译:血红素加氧酶(HO)通过将血红素分解为胆汁色素来调节细胞血红蛋白的水平和活性以及HO的活性。我们使用逆转录病毒载体检查了人HO-1基因在肾组织中细胞血红素上的传递作用。我们对5天大的自发性高血压大鼠进行了一次心内注射浓缩的感染性病毒颗粒。用空载体转导25个,用人HO-1基因转导25个。在2和4周后测量人和大鼠HO-1的功能表达。逆转录聚合酶链反应显示,人类HO-1 mRNA最早在2周时就表达出来,并在肾脏中最高表达。蛋白质印迹分析表明,人HO-1蛋白在大鼠肾脏结构中分布,主要分布在Henle环的粗大上升肢以及近端小管和肾小球前小动脉中。这些区域还显示出更高的HO活性,这是通过血红素向胆红素和一氧化碳转化率的提高来衡量的。人HO-1基因的功能性表达与4和8周龄自发性高血压大鼠的血压降低有关。与未转导的大鼠相比,人类HO-1基因在转导大鼠中的过度表达与尿液20-羟基二十碳四烯酸,有效的血管收缩剂和肾小管Na(+)转运抑制剂降低35%有关,这可能与降低血压。

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