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中国应用生理学杂志 ›› 2017, Vol. 33 ›› Issue (6): 558-563.doi: 10.12047/j.cjap.5601.2017.132

• 研究论文 • 上一篇    下一篇

敦煌疗风虚瘦弱方对大鼠慢性心衰的治疗作用及其机制

吴国泰1,2, 杜丽东2, 陈振鹤2, 蔺兴遥1,2, 李金田1,2, 李芳2   

  1. 1. 甘肃中医药大学 敦煌医学与转化省部共建教育部重点实验室, 兰州 730000;
    2. 甘肃省中药药理与毒理学重点实验室, 兰州 730000
  • 收稿日期:2016-11-04 修回日期:2017-06-20 出版日期:2017-11-28 发布日期:2018-06-19
  • 基金资助:
    敦煌医学与转化省部共建教育部重点实验室开放基金(DHYX1212-010);2015年甘肃省"陇原青年创新人才扶持计划"项目(2015-003)

Therapeutic effects of Dunhuang Liaofengxushouruo decoction on chronic heart failure in rats

WU Guo-tai1,2, DU Li-dong2, CHEN Zhen-he2, LIN Xing-yao1,2, LI Jin-tian1,2, LI Fang2   

  1. 1. Gansu University of Chinese Medicine, Key Laboratory of Dunhuang Medicine and Transformation in Ministry of Education, Lanzhou 730000, China;
    2. Key Laboratory of Pharmacology and Toxicology of TCM in Gansu Province, Lanzhou 730000, China
  • Received:2016-11-04 Revised:2017-06-20 Online:2017-11-28 Published:2018-06-19
  • Contact: 李芳,Tel:13919959028;E-mail:119232388@qq.com E-mail:119232388@qq.com
  • Supported by:
    敦煌医学与转化省部共建教育部重点实验室开放基金(DHYX1212-010);2015年甘肃省"陇原青年创新人才扶持计划"项目(2015-003)

摘要: 目的:观察敦煌疗风虚瘦弱方(LXD)对慢性心衰大鼠的治疗作用及机制。方法:48只Wistar雄性大鼠随机分为6组(n=8):正常组、模型组、卡托普利组和LXD高、中、低剂量组。除正常组外,其余各组大鼠尾静脉注射阿霉素(2.5 mg/kg),每周1次,连续6周复制慢性心衰模型,末次注射阿霉素60 min后,卡托普利组灌胃卡托普利,LXD高、中、低剂量组分别以灌胃LXD水煎液80、40、20 g/kg (生药/体重),正常组和模型组灌胃等容量生理盐水,每天1次,连续6周,同时每周腹腔注射15 mg/kg异丙肾上腺素1次。记录各组大鼠的呼吸、皮毛颜色、活动、体重、力竭游泳时间、心率(HR)、平均动脉压(MAP)、左室收缩压(LVSP)、左室舒张末压(LVEDP)、左室内压最大上升速率(+dp/dtmax),左室内压最大下降速率(-dp/dtmax),检测血清白介素-6(IL-6)及肿瘤坏死因子-α(TNF-α)水平,评价抗氧化活性和心室质量指数,光镜下观察心肌组织形态变化。结果:与正常组比较,模型大鼠体重增长减慢,力竭游泳时间明显缩短,心脏功能减弱,出现细胞因子激活、自由基损伤、心肌酶释放增多,HE染色显示心肌组织形态出现损伤,心肌纤维断裂等。与模型组比较,各剂量LXD对模型大鼠有不同程度的治疗作用,给药第42天,LXD各剂量组体重明显增长;LXD高、中剂量组力竭游泳时间明显延长(P<0.05),MAP、血清IL-6、TNF-α、MDA、LVMI和RVMI显著降低(P<0.05,P<0.01),LVSP、+dp/dtmax及-dp/dtmax均显著升高(P<0.05,P<0.01),LXD高剂量组LVEDP显著降低(P<0.01),LXD中、低剂量组CK和AST显著降低(P<0.05,P<0.01);LXD各剂量组血清SOD升高。结论:敦煌疗风虚瘦弱方对阿霉素诱导的慢性心衰模型大鼠具有一定的治疗作用,作用机制与改善血流动力学,降低心肌组织损伤有关。

关键词: 敦煌疗风虚瘦弱方, 慢性心力衰竭, 阿霉素, 心肌损伤,血流动力学, 大鼠

Abstract: Objective: To observe the therapeutic effects and mechanism of Dunhuang Liaofengxushouruo decoction (LXD) (Traditional Chinese Medicine) on chronic heart failure(CHF) in rats.Methods: Forty-eight male Wistar rats were randomly divided into normal group(n=8):model group, captopril group and LXD(Traditional Chinese Medicine) high, medium and low dose group. Except the normal group, the rats were intravenous injected with adriamycin 2.5 mg/kg in one day for 6 weeks, the captopril rats were intragastric administrated by captopril 25 mg/kg, LXD high, medium and low dose groups were intragastric administrated by LXD of 80, 40, 20 g/kg for 6 consecutive weeks. The rats breathing, coat color, activity, body weight(BW) and time of exhaustive swimming were measured; Heart rate, mean arterial pressure (MAP), left ventricular systolic pressure (LVSP), left ventricular end diastolic pressure (LVEDP), maximal rate of left ventricular pressure (+dp/dtmax or -dp/dtmax)of each rat were examined by Power Lab. The levels of interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) were measured; The rats were sacrificed and hearts removed for separation of left and right ventricle, the antioxidant activity and ventricular mass index were measured, left ventricular myocardium was administrated by 4% paraformaldehyde, HE staining, morphological changes were observed under microscope.Results: Body weight of each group decreased, and time of exhaustive swimming decreased after modeling (P<0.01). At 28 days after administration, BW in high and middle dose of LXD groups were increased and the swimming time of rats in LXD high dose group was increased (P<0.05).At 42 days, BW in all of LXD groups were increased and the exhaustive swimming time of high and middle dose of LXD were prolonged (P<0.05), MAP was decreased and LVSP, +dp/dtmax or -dp/dtmax were increased in LXD high and middle groups. The LVEDP was decreased in high dose of LXD group(P<0.05,P<0.01). The levels of creatine kinase (CK) and aspartate aminotransferase (AST) in middle and low dose of LXD groups were decreased(P<0.05,P<0.01), and the serum levels of IL-6, TNF-α and malondialdehyde (MDA) in serum in LXD high and middle dose groups were lower. The activities of superoxide dismutase (SOD) in serum were increased in all of LXD groups, and the LVMI and RVMI were decreased in high and middle dose of LXD groups(P<0.05,P<0.01). The pathological results showed that myocardial fiber arrangement and myocardial interstitial edema phenomenon were obviously improved in high dose of LXD group and CMD decreased.Conclusion: Therapeutic effect of LXD on CHF by doxorubicin-induced in rats is confirmed, the mechanisms are associated with improved hemodynamics and myocardial tissue.

Key words: Dunhuang Liaofengxushouruo decoction, chronic heart failure, adriamycin, myocardial injury, hemodynamics, rats

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