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中国应用生理学杂志 ›› 2018, Vol. 34 ›› Issue (3): 242-246.doi: 10.12047/j.cjap.5591.2018.057

• 研究论文 • 上一篇    下一篇

苹果多酚通过下调钙敏感受体改善大鼠低氧性肺动脉高压的作用

孟涵燕1, 赵洁1, 花春艳2, 朱星谕1, 李依玲1, 袁琳波2   

  1. 1. 温州医科大学第一临床医学院, 浙江温州 325000;
    2. 温州医科大学基础医学院生理教研室, 浙江温州 325000
  • 收稿日期:2017-04-10 修回日期:2018-01-31 出版日期:2018-05-28 发布日期:2018-09-08
  • 通讯作者: 袁琳波,Tel:13676452396;E-mail:81132302@qq.com E-mail:81132302@qq.com
  • 基金资助:
    温州市科技局(Y20170018),浙江省教育厅(Y201223758),浙江省大学生科技创新活动计划暨新苗人才计划(2016R413011),温州医科大学科研课题(wyx201601060),浙江省高等教育教学改革项目(gj20160104),浙江省教育厅教育规划课题(SCG163),温州医科大学高等教育教学研究课题(YBJ201605),地方高校国家级大学生创新创业训练计划(201710343005)

Improvement effects of applephenon on hypoxia pulmonary hypertension in rats by down-regulating the calcium sensing receptor

MENG Han-yan1, ZHAO Jie1, HUA Chun-yan2, ZHU Xing-yu1, LI Yi-ling1, YUAN Lin-bo2   

  1. 1. School of the First Clinical Medical Sciences, Wenzhou Medical University, Wenzhou 325000, China;
    2. Department of physiology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou 325000, China
  • Received:2017-04-10 Revised:2018-01-31 Online:2018-05-28 Published:2018-09-08
  • Supported by:
    温州市科技局(Y20170018),浙江省教育厅(Y201223758),浙江省大学生科技创新活动计划暨新苗人才计划(2016R413011),温州医科大学科研课题(wyx201601060),浙江省高等教育教学改革项目(gj20160104),浙江省教育厅教育规划课题(SCG163),温州医科大学高等教育教学研究课题(YBJ201605),地方高校国家级大学生创新创业训练计划(201710343005)

摘要: 目的:探究苹果多酚通过下调钙敏感受体(CaSR)表达改善大鼠低氧性肺动脉高压的作用。方法:36只雄性SD大鼠随机分为对照组、低氧诱导组和苹果多酚干预组(n=12)。低氧诱导组和苹果多酚干预组大鼠每天在低氧舱(氧浓度为10%)中间断低氧暴露8 h,对照组在正常环境下饲养,为期四周。建模同时,苹果多酚干预组每日用苹果多酚按200 mg/kg的剂量灌胃,对照组、低氧诱导组用等量生理盐水灌胃,每日1次,共持续四周。建模完成后,检测各组大鼠的肺动脉平均压(mPAP)、肺血管阻力(PVR)、右心室肥厚指数(RVHI)、肺动脉中膜厚度(MT)、WA%、WT%及肺动脉组织中CaSR表达量。结果:低氧暴露组大鼠mPAP、PVR、RVHI、MT、WA%、WT%及肺动脉组织中CaSR表达量均较对照组明显升高(P<0.01);苹果多酚干预组可改善上述效应。结论:苹果多酚能有效预防大鼠低氧性肺动脉高压,其机制与下调CaSR的表达有关。

关键词: 苹果多酚, 肺动脉高压, 大鼠, 钙敏感受体(CaSR)

Abstract: Objective: To investigate the improving effect of applephenon on the hypoxic-pulmonary hypertension by down-regulating the expression of calcium sensing receptor(CaSR).Methods: Thirty-six male SD rats were randomly divided into 3 groups(n=12):control group, hypoxia-exposure group and applephenon-intervention group.Rats in hypoxia-exposure group and applephenon-intervention group were intermittently exposed to hypoxia in a hypoxic-cabin (the O2 concentration was 10%) for 8 hours everyday, while rats in control group were raised in normal environment, the experiments were conducted for 4 weeks.Meanwhile, rats in applephenon-intervention group were given intragastrically with applephenon according to 200 mg/kg per day, rats in control and hypoxia-exposure group were given intragastrically with the same amount of normal saline, it lasted for 4 weeks. Then the average pulmonary artery pressure(mPAP), pulmonary vascular resistance(PVR), right ventricular hypertrophy index(RVHI), medial thickness(MT), WA%, WT% and the expression of calcium sensitive receptor (CaSR) of rats in each group were measured.Results: mPAP, PVR, RVHI, MT, WA%, WT% and CaSR expression in hypoxia-exposure group were all significantly higher than those in control group(P<0.01), while applephenon could improved those obviously.Conclusion: Applephenon has a good prophylactic effect on hypoxic pulmonary hypertension, the mechanism may be involved in the down-regulation of CaSR expression.

Key words: applephenon, rats, pulmonary hypertension, calcium sensitive receptor (CaSR)

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