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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (5): 528-531.

• 研究原著 • 上一篇    下一篇

氢氯噻嗪和吲哒帕胺逆转自发性高血压大鼠心肌肥厚及促进心肌中内皮型一氧化氮合酶的表达

何燕, 钟国强, 王炎, 涂荣会, 汪道文1   

  1. 广西医科大学第一附属医院老年心血管内科,心血管研究所,南宁 530000,广西;
    1 华中科技大学同济医学院附属同济医院心血管内科, 武汉 430000,湖北
  • 收稿日期:2006-02-11 修回日期:2006-03-03 出版日期:2006-05-26 发布日期:2020-12-09
  • 通讯作者: 汪道文, 男, 博士生导师, 研究方向:分子心脏病学。 E-mail:dwwang @tjh.tjmu.edu.cn
  • 作者简介:何燕, 女, 硕士研究生, 研究方向:分子心脏病学。 Tel:13877109677   E-mail:hyxjwxy @126.com

Effects of hydrochlorothiazide and indapamide on left ventricular hyper-trophy and eNOS expression in spontaneous hypertensive rats

HE Yan, ZHONG Guo-qiang, WANG Yan1, TOU Rong-hui, WANG Dao-wen1   

  1. Department of Cardiology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530000, Jiangsu, China;
    1Cardiovascular Division of Internal Medicine Department and Gene Therapy Center, Tongji Medical College of Hua-zhong University of Science and Technology, Wuhan 430000, Hubei, China
  • Received:2006-02-11 Revised:2006-03-03 Online:2006-05-26 Published:2020-12-09

摘要: 目的: 研究氢氯噻嗪和吲哒帕胺对肥厚心肌 及心肌中内皮型一氧化氮合酶(endothelial nitric ox-ide synthase, eNOS)表达的影响, 从而探讨其逆转心 肌肥厚可能的分子机制。 方法: 15 只成年雌性自发 性高血压大鼠(SHR)随机分为对照组 、氢氯噻嗪组、 吲哒帕胺组。治疗前、开始至结束时每周测血压 1 次。4 周后处死动物, 取左心室称重后, 计算左心室 重与体重的比值, 采用天狼猩红染色分析心肌间质 和血管壁胶原分布。 采用 Western Blot 法检测心肌 eNOS 蛋白质表达。 结果: 治疗组动物收缩压及左心 室重与体重比均明显低于对照组。心肌经天狼猩红 染色后见治疗组心肌结构基本正常, 与对照组相比 未见明显的胶原沉积。 并且治疗组在蛋白质水平显 著上调心肌 eNOS 的表达(P<0.05)。结论: 吲哒帕 胺或氢氯噻嗪治疗自发性高血压可逆转左室肥厚、 上调心肌 eNOS、改善心肌纤维化从而起到保护心脏的作用。

关键词: 氢氯噻嗪, 吲哒帕胺, 自发性高血压大鼠, 左心室肥厚, 内皮型一氧化氮合酶

Abstract: AIM: To investigate the effects of hydro-chlorothiazide and indapamide on cardiac remodeling and the expression of endothelial nitric oxide synthase (eNOS) in spontaneous hypertensive rats (SHR).METHODS: Fifteen female SHRs were randomly divided into 3 groups (n =5):control group, hydrochlorothiazide(HCTZ, 10 mg·kg-1 ·d-1)group and indapamide (IND, 0.625 mg·kg-1 ·d-1)group.Systolic blood pressure (SBP)of the rats in each group was measured at pretreatment and each week during the study.Four weeks later, rats were sacrificed and the ratio of heart weight to body weight was calculated, collagen deposition in the heart was deter-mined histochemically using Sirius red staining, and eNOS protein expression of the heart was determined by Western blot.RESULTS: Both HCTZ and IND reduced the SBP of SHRs significantly (P<0.05).The drug group showed normal myocardium structure as compared with control rats which showed myocardium cell hypertro-phy, derangement, interstitial proliferation and mass col-lagen deposition.HCTZ and IND increased the eNOS ex-pression significantly.CONCLUSION: Both HCTZ and IND can protect the heart by reversing cardiac remodel-ing, upregulate the eNOS expression and reduce collagen deposition.

Key words: hydrochlorothiazide, indapamide, spon-taneous hypertensive rats, left ventricular hypertrophy, endothelial nitric oxide synthase

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