天津医药 ›› 2015, Vol. 43 ›› Issue (9): 992-995.doi: 10.11958/j.issn.0253-9896.2015.09.009

• 实验研究 • 上一篇    下一篇

PDTC 对高血压大鼠继发左心室肥厚及心力衰竭的作用

牟鑫煜,张寰   

  1. 天津市第四中心医院心内科CCU
  • 收稿日期:2015-03-20 修回日期:2015-06-05 出版日期:2015-09-15 发布日期:2015-09-15
  • 通讯作者: 张寰△ E-mail:huan_cn@126.com E-mail:sqs5324@sohu.com
  • 作者简介: 牟鑫煜 (1979), 男, 主治医师, 主要从事高血压病方面研究
  • 基金资助:
    天津市卫生局科技基金资助项目 (2013KZ016)

Effects of PDTC on ventricular hypertrophy and congestive heart failure in hypertensive rats

MU Xinyu,,ZHANG Huan   

  1. Department of Cardiology, The Fourth Central Hospital of Tianjin, Tianjin 300140, China
  • Received:2015-03-20 Revised:2015-06-05 Published:2015-09-15 Online:2015-09-15
  • Contact: E-mail:huan_cn@126.com E-mail:sqs5324@sohu.com

摘要: 目的 评价核因子 (NF) -κB 抑制剂吡咯烷二硫基甲酸盐(PDTC)对高血压-心室肥厚-充血性心力衰竭大鼠心脏 NF-κB 活性和血清中各炎症递质的抑制作用。方法 42 只雄性 Dahl 盐敏感大鼠建立高血压-心肌肥厚-心力衰竭动物模型, 按随机数字表法分为 A 组 (正常饲料喂养组)、 B 组 (高盐饲料喂养组)、 C 组 (早期 NF-κB 抑制组)、 D 组 (高血压期 NF-κB 抑制组)、 E 组 (心肌肥厚期 12 周 NF-κB 抑制组)、 F 组 (心肌肥厚期 16 周 NF-κB 抑制组)、 G 组 (心力衰竭期 NF-κB 抑制组), 每组 6 只。各组分别按特定时间段予以 8%高盐饲养及 PDTC 100 mg/ (kg·d) 腹腔内注射, 观察不同时长的 PDCT 给药期对血压、 左心室舒张末期室间隔厚度 (IVSD)、 左室舒张末期后壁厚度(LVPWD)、 左室舒张末期内径 (LVEDD)、 左室收缩末期内径 (LVESD)、 左室射血分数 (LVEF)、 心肺质量/体质量比值、 NF-κB 活性、 肿瘤坏死因子 (TNF) -α、 白细胞介素 (IL) -6、 单核细胞趋化蛋白(MCP)-1、 C 反应蛋白 (CRP) 的影响。结果 早期给予 PDTC 可抑制 NF-κB 和促炎症细胞因子水平, 大鼠心脏结构改变减轻且心脏功能仅呈轻度降低, 给药时间越长, 对心脏的保护作用越大, 可有效地控制血压, 在一定程度上阻断未来可能发生的左室肥厚与左室衰竭。当高血压持续、 心肌肥厚形成并伴有心力衰竭的情况下, PDTC 用药效果作用有限。结论 PDTC 对大鼠高血压、 心室肥厚及充血性心力衰竭的发生发展具有预防和治疗作用, 早期应用对维持大鼠心脏的正常心功能作用更加明显。

关键词: 高血压, 心肌病, 肥厚性, 心力衰竭, 细胞因子类, 大鼠, 吡咯烷二硫基甲酸盐

Abstract: Objective To evaluate the inhibitory effects of NF-κB inhibitor pyrrolidine dithiocar-bamate (PDTC) on NF-kappa B activity and the serum inflammatory mediators in hypertensive-ventricular hypertrophy-congestive heart fail⁃ ure rats. Methods The rat model of hypertension- cardiac hypertrophy-heart failure was made from 42 male Dahl salt sen⁃ sitive rats. Rats were randomly divided into seven groups including group A (normal diet group), group B (high salt diet group), group C (NF-κB inhibition in early stage), group D (NF-κB inhibition in hypertensive stage), group E (NF-κB inhibi⁃ tion in cardiac hypertrophy stage of week 12) and group G (NF-κB inhibition in heart failure stage). There were six rats for each group. Rats were administrated 8% high salt diet and injected PDTC 100 mg/ (kg·d)intraperitoneally according to the prescribed time. Changes of blood pressure, left ventricular end diastolic interventricular septal thickness (IVSD), left ven⁃ tricular end diastolic posterior wall thickness (LVPWD), left ventricular end diastolic diameter (LVEDD), systolic left ventric⁃ ular end diastolic diameter (LVESD), left ventricular ejection fraction (LVEF), heart, lung weight / body weight ratio, NF- kappa B activity, tumor necrosis factor (TNF)-α, interleukin (IL)-6, monocyte chemotactic protein (MCP)-1 and C-reactive protein (CRP) were observed in different treatment time points of PDCT. Results Levels of NF-κB and proinflammatory cy⁃ tokines were reduced after early administration of PDTC, and the cardiac function was also decreased. The longer the treat⁃ ment time, the greater the protective effect on heart. PDTC can effectively control blood pressure, and block left ventricular hypertrophy and left ventricular failure in a certain extent. The effects of PDTC were limited after persistent hypertension, and myocardial hypertrophy formation accompanied by heart failure. Conclusion PDTC plays a role in prevention and treatment of hypertension, left ventricular hypertrophy and congestive heart failure in model rats. Early application of PDTC could obviously maintain the normal cardiac function in rats with heart disease.

Key words: hypertension, cardiomyopathy, hypertrophic, heart failure, cytokines, rats, pyrrolidine dithiocar-bamate