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中国临床药理学与治疗学 ›› 2000, Vol. 5 ›› Issue (1): 21-24.

• 论著 • 上一篇    下一篇

川芎嗪对慢性低氧和高二氧化碳致大鼠肺动脉高压及TXA2和PGI2的影响1

王良兴, 陈少贤, 徐正介, 喻林升2, 谢于鹏, 陈彦凡, 王卫   

  1. 温州医学院肺心病研究室,附属一院呼吸科;
    2病理科,温州 325000
  • 收稿日期:2000-01-04 修回日期:2000-01-24 出版日期:2000-03-26 发布日期:2020-11-26
  • 作者简介:王良兴,男,副教授,主要研究方向为肺心病防治。
  • 基金资助:
    1 本课题受浙江省自然科学基金(№398530 396479)及浙江省医药卫生优秀青年科技人才专项科研基金资助

Effect of ligustrazine on pulmonary arterial pressure and thromboxane A 2 and prostacyclin in chronic hypoxic hypercapnic rats1

WANG Liang-Xing, CHENG Shao-Xian, XU Zheng-Jie, YU Lin-Sheng, XIE Yu-Peng, CHENG Yan-Fan, WANG Wen2   

  1. Institute of Cor pulmonale;
    2Department of Pathology,Wenzhou Medical College,Wenzhou,325000
  • Received:2000-01-04 Revised:2000-01-24 Online:2000-03-26 Published:2020-11-26

摘要: 目的 研究川芎嗪对慢性低 O2和高 CO2致大鼠肺动脉高压及 TXA 2 和 PGI 2 的影响。方法 30只 SD 大鼠分为正常对照组(A 组),4 wk 低 O2高 CO2组(B 组),4 wk 低 O2高 CO2+川芎嗪组(C 组),观察川芎嗪对慢性低 O2高 CO2大鼠肺动脉平均压(mPAP)、颈动脉平均压(mCAP)、肺动脉显微和超微结构、血浆 TXB2 及 6-keto-PGF 浓度的影响。结果 (1)B 组 mPAP明显高于A 组(P<0.01),C 组 mPAP明显低于 B 组(P<0.01),三组间 mCAP无明显差异(P>0.05);(2)光镜下,肺细小动脉管壁面积/管总面积比值(WA/TA)、肺细小动脉中膜平滑肌细胞核密度(SMC)B 组较 A 组明显增高 (P均<0.01),C 组 WA/TA 、 SMC 较 B 组明显降低 (P均<0.01),电镜下,B 组肺细小动脉中膜平滑肌细胞增生,面积增大,染色质增多,外膜胶原纤维密集,C 组大鼠肺细小动脉中膜平滑肌细胞和外膜胶原纤维增生较 B 组明显减轻;(3)B 组 TXB 2 较A 组明显增高(P<0.01),C 组 TXB2 较 B 组明显降低(P<0.01),6-keto-PGF 三组间无显著性差异 (P>0.05),B 组 TXB 2 /6-keto-PGF 比值较 A 组明显增高 (P<0.01),C 组 TXB2 /6-keto-PGF 比值较 B 组明显降低(P<0.01)。结论 川芎嗪抑制 TXA 2 合成可能为其抑制慢性低 O 2和高 CO2性肺动脉高压及肺血管结构重建的作用机制之一 。

关键词: 川芎嗪, 缺氧, 高碳酸血症, 高血压/肺性, 血栓素A2, 前列环素

Abstract: Aim To investigate the effect of ligustrazine on pulmonary arterial pressure,thromboxane A2(TXA2)and prostacyclin(PGI2)in chronic hypoxic hypercapnic rats.Methods Thirty rats were randomly divided into control group(A),hypoxic hypercapnic group(B)and hypoxic hypercapnia+ligustrazine (lig)group(C).Results The mPAP in group B was significantly higher than that in group A(P<0.01)and group C(P<0.01).Differences of mCAP among groups were not significant (P>0.05);The specific value of WA/TA(vessel wall area/total area) and SMC (the density of medial smooth muscle cells)were significantly higher in group B than that in group A(P<0.01)and group C(P<0.01).Electron microscopy showed the proliferation of medial smooth muscle cells and collageous fibers of pulmonary ar-terioles in ratsof group B and ligustrazine could invert the changes mentioned above.Plasma TXB2 concentration and TXB2/6-keto-PGF 1αwere significantly higher in ratsof group B than that of group A(P<0.01)and group C (P<0.01).Differences of 6-keto-PGF were not significant among groups(P>0.05).Conclusion Ligustrazine can inhibit pulmonary hyper-tension and structural remodeling of pulmonary artery in chronic hypoxic hypercapnic rats by inhibiting synthesis of TXA2.

Key words: ligustrazine, anoxia, hypercapnia, hypertension, pulmonary, thromboxane A2, prostacyclin

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