天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (增刊1): 1-9.

• 研究论文 •    下一篇

小分子果胶对原发性高血压的治疗作用及机制研究

宋勇飞1,程丽艳1,吴丽梅1,曹颖1,高海峰2,黄萍萍2,王孝举1*   

  1. 1浙江省医学科学院分子医学中心,杭州 310013;2杭州络通生物科技有限公司,杭州 310052
  • 出版日期:2018-07-31 发布日期:2018-07-31
  • 基金资助:

    浙江省自然科学基金(LY13H310004)

Effect and Mechanism of Low-Molecular-Weight Citrus Pectin on Hypertension in SHR Rats

SONG Yong-fei1,CHENG Li-yan1,WU Li-mei1,CAO Ying1,GAO Hai-feng2,HUANG Ping-ping2,WANG Xiao-ju1*   

  1. 1Center for MolecuLar Medicine,Zhejiang Academy of Medical Sciences,Hangzhou 310013,China; 2Hangzhou JoyfuL Biotechnology Co.,Ltd,Hangzhou 310052,China
  • Online:2018-07-31 Published:2018-07-31

摘要: 本文观察小分子果胶对于原发性高血压大鼠的降压作用及机制,原发性高血压大鼠(SHR大鼠)连续8周灌胃给予不同剂量小分子果胶,每两周无创测定血压,心率,给药结束后测定血清中血管紧张素II,降钙素基因相关肽以及血清中一氧化氮、一氧化氮合酶等含量。结果表明,与模型对照组相比,给予高剂量(30 mL/kg)小分子果胶组大鼠分别于2周和6周后收缩压显著下降(P<0.05),给予高剂量(30 mL/kg)和中剂量(20 mL/kg)小分子果胶组大鼠4周后心率持续显著下降(P<0.05);给予高剂量(30 mL/kg)小分子果胶组大鼠血清血管紧张素II显著下降(P<0.01),降钙素基因相关肽显著升高(P<0.05),一氧化氮显著升高(P<0.05);组织病理学检查结果显示各剂量小分子果胶对大鼠肝脏组织、肾脏组织无影响。研究显示小分子果胶对原发性高血压具有显著的降压作用,该作用可能与其降低血清血管紧张素II、内皮素-1,升高血清降钙素基因相关肽、一氧化氮有关。

关键词: 小分子果胶, 高血压

Abstract: This paper showed antihypertensive effect and mechanism of low molecuLar weight citrus pectin (LCP) in hypertensive rats.Treatment with different doses of LCP for 8 consecutive weeks,every two weeks non-invasive diagnosis of spontaneously hypertensive rats (SHR rats) blood pressure and heart rate were measured.After administration Serum levels of angiotensin II,calcitonin gene-related peptide and serum nitric oxide and nitric oxide synthase were detected.The results showed that compared with the model control group,the systolic blood pressure of the high dose (30 mL/kg) LCP group was significantly decreased at 2 and 6 weeks (P<0.05),After 4 weeks,the heart rate of rats in high dose (30 mL/kg) and medium dose (20 mL/kg) LCP groups continued to decrease significantly (P<0.05).After administration of high dose (30 mL/kg) LCP group,the serum level of angiotensin II was significantly decreased (P<0.01),calcitonin gene related peptide (P<0.05),and nitric oxide significantly increased (P<0.05).Histopathological examination showed that each dose of LCP have no effect on rat liver and kidney.Studies have shown that LCP has a significant antihypertensive effect on essential hypertension;the effect may be related to its lower serum angiotensin II,endothelin -1,elevated serum calcitonin gene-related peptide,nitric oxide.

Key words: low molecuLar weight citrus pectin, hypertension  

中图分类号:  R285.5