首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2篇
  中国医学   2篇
  2019年   1篇
  2010年   1篇
排序方式: 共有2条查询结果,搜索用时 15 毫秒
1
1.
Objective: Maijunan(MJA) Tablets is a protected variety of traditional Chinese medicine(TCM) consisted of Pueraria lobata, hydrochlorothiazide(HTCZ), Uncaria rhynchophylla(366:1:980) and excipient. In the present work, MJA was consisted of the total flavones of P. lobata, HCTZ and total alkaloids of U. rhynchophylla(40:11:75). The combination of MJA and the total phenols of Magnolia officinalis(M-MJA) was consisted of the total flavones of P. lobata, the total phenols of M. officinalis, HCTZ and the total alkaloids of U. rhynchophylla(40:40:11:75). The aim of this work was to examine the effect and mechanism of M-MJA on the blood pressure of spontaneous hypertensive rats(SHRs).Methods: Adult male SHRs were randomly divided into control group, MJA group(180 mg/kg·d), and the M-MJA group(218 mg/kg·d)(n = 5). SHRs were orally administered with M-MJA and MJA respectively once a day for 8 weeks, the blood pressure of SHRs was measured every two weeks, and the biochemical indicators related to blood pressures were detected at the last dosing.Results: After oral administration of M-MJA to SHRs once a day for 8 weeks, the systolic and diastolic blood pressures of SHRs were deceased significantly. M-MJA affected renin-angiotensin-aldosterone system by decreasing the levels of Ren, Ang II and ALD, affected the endothelial function by decreasing the levels of ET-1 and 20-HETE, and increasing the level of eNOS, affected the oxidative stress by increasing the protein expression of Nrf2 and the activities of HO-1 and GSH-Px, and decreasing the protein expression of CYP2 E1 and CYP4 A, as well as the content of MDA.Conclusion: These results indicated that M-MJA could regulate the renin-angiotensin-aldosterone system,improve endothelial function, and inhibit CYP4 A activity to reduce the production of 20-HETE, alleviate the oxidative stress disorder of the visceral organs, and eventually exert antihypertensive effect. Additionally, the anti-oxidant ability, regulating the renin-angiotensin-aldosterone system and improving endothelial function of M-MJA are more powerful than that of MJA, suggesting that M-MJA may have a better anti-hypertensive effect than MJA.  相似文献
2.
目的:研究脉君安片对自发性高血压大鼠(SHR)细胞色素P450羟化酶和肾素-血管紧张素-醛固酮系统(RAAS)的影响,探讨其降压抵抗机制。方法:12只成年SHR随机分为给药组和对照组,给药组灌胃模拟脉君安片(氢氯噻嗪10mg.kg-1.d-1,葛根素36mg.kg-1.d-1,钩藤总碱122mg.kg-1.d-1),对照组灌胃等量去离子水。每周测血压1次,4wk后处死动物。用放射免疫法检测血浆中血管紧张素Ⅱ和醛固酮含量,实时荧光定量PCR测定组织中细胞色素P450 4A1(CYP4A1)和血管紧张素Ⅱ1型受体(AT1)mRNA的表达,western blot法测定组织中细胞色素P450 4A1(CYP4A1)蛋白的表达量。结果:与对照组相比,用药4wk时给药组不仅降压效果显著,而且显著上调CYP4A1 mRNA和蛋白水平、血管紧张素Ⅱ1型受体(AT1)mRNA水平、血浆中血管紧张素Ⅱ和醛固酮的含量。结论:脉君安片在降低血压的同时,激活了肾素-血管紧张素-醛固酮系统和花生四烯酸羟化代谢途径,对降压产生了抵抗作用。  相似文献
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号