...
首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Resveratrol improves high-fructose-induced vascular dysfunction in rats
【24h】

Resveratrol improves high-fructose-induced vascular dysfunction in rats

机译:白藜芦醇改善高果糖诱导的大鼠血管功能障碍

获取原文
获取原文并翻译 | 示例
           

摘要

High levels of fructose in the diet results in metabolic abnormalities and vascular disorders. In this study, the effect of resveratrol (RES) on vascular relaxation and contraction responses was examined in the aorta of high-fructose (HFr)-fed rats. mRNA expressions of aortic sirtuin 1 (SIRT1), GLUT5, and aldolase B were also investigated. Rats were given fructose (30%) and (or) RES (50 mg.L-1) in their drinking water for 8 weeks. In the HFr-fed rats, plasma levels of arginine and the ratio of arginine: asymmetric dimethylarginine (ADMA) decreased, whereas leptin levels increased. Decreased relaxation and increased contractile responses were detected in aortic rings. However, the aortic expressions of SIRT1, GLUT5, and aldolase B remained unchanged. RES treatment restored HFr-induced vascular dysfunction without improvements in insulin resistance. Treatment of HFr-fed rats with RES increased plasma levels of arginine and the L-arginine: ADMA ratio, and decreased plasma levels of leptin. RES increased SIRT1 expression, but decreased the expression of GLUT5 and aldolase B in aortas from HFr-fed rats. These results suggest that RES contributes to the restoration of HFr-induced vascular dysfunction in rats, at least in part, by up-regulation of SIRT 1 and down-regulation of GLUT5 and aldolase B in the aorta. Moreover, RES may have a positive influence on vasculature by partly restoring the plasma arginine: ADMA ratio and leptin levels.
机译:饮食中的果糖含量高会导致代谢异常和血管疾病。在这项研究中,在高果糖(HFr)喂养的大鼠的主动脉中检查了白藜芦醇(RES)对血管舒张和收缩反应的影响。还研究了主动脉Sirtuin 1(SIRT1),GLUT5和醛缩酶B的mRNA表达。大鼠在饮用水中给予果糖(30%)和(或)RES(50 mg.L-1)8周。在HFr喂养的大鼠中,血浆精氨酸水平和精氨酸:不对称二甲基精氨酸(ADMA)之比降低,而瘦蛋白水平升高。在主动脉环中检测到松弛减少和收缩反应增加。但是,SIRT1,GLUT5和醛缩酶B的主动脉表达保持不变。 RES治疗可恢复HFr诱导的血管功能障碍,而不会改善胰岛素抵抗。用RES治疗HFr喂养的大鼠会增加精氨酸的血浆水平和L-精氨酸:ADMA的比率,并降低瘦素的血浆水平。 RES增加了HFr喂养的大鼠主动脉中SIRT1的表达,但降低了GLUT5和醛缩酶B的表达。这些结果表明,RES至少部分地通过上调SIRT 1的上调以及GLUT5和醛缩酶B的下调来促进HFr诱导的大鼠血管功能障碍的恢复。此外,RES可通过部分恢复血浆精氨酸:ADMA比例和瘦素水平,对脉管系统产生积极影响。

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