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中华胸部外科电子杂志 ›› 2015, Vol. 02 ›› Issue (03) : 157 -160. doi: 10.3877/cma.j.issn.2095-8773.2015.03.004

所属专题: 文献

论著

钙离子拮抗剂维拉帕米对人食管下括约肌舒缩的调节机制
吴瑞锋1, 刘俊峰2,(), 高杨3, 李保庆2, 王金栋4, 刘新波2   
  1. 1. 071000 保定市第一中心医院心胸血管外科
    2. 050011 石家庄,河北医科大学第四医院胸外科
    3. 050011 石家庄,河北医科大学研究生学院
    4. 221002 徐州市第一人民医院胸心外科
  • 收稿日期:2015-04-29 出版日期:2015-08-28
  • 通信作者: 刘俊峰
  • 基金资助:
    河北省自然科学基金资助项目(C2010000622)

Regulation mechanism of contraction and relaxation of human lower esophageal sphincter by calcium antagonist verapamil

Ruifeng Wu1, Junfeng Liu2,(), Yang Gao3, Baoqing Li2, Jindong Wang4, Xinbo Liu2   

  1. 1. Department of Cardiovascular and Thoracic Surgery, the First Central Hospital of Baoding, Baoding 071000, China
    2. the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
    3. School of Postgraduate, Hebei Medical University, Shijiazhuang 050011, China
    4. Department of Cardiothoracic Surgery, the First People’s Hospital of Xuzhou, Xuzhou 221002, China
  • Received:2015-04-29 Published:2015-08-28
  • Corresponding author: Junfeng Liu
  • About author:
    Corresponding author: Liu Junfeng, Email:
引用本文:

吴瑞锋, 刘俊峰, 高杨, 李保庆, 王金栋, 刘新波. 钙离子拮抗剂维拉帕米对人食管下括约肌舒缩的调节机制[J/OL]. 中华胸部外科电子杂志, 2015, 02(03): 157-160.

Ruifeng Wu, Junfeng Liu, Yang Gao, Baoqing Li, Jindong Wang, Xinbo Liu. Regulation mechanism of contraction and relaxation of human lower esophageal sphincter by calcium antagonist verapamil[J/OL]. Chinese Journal of Thoracic Surgery(Electronic Edition), 2015, 02(03): 157-160.

目的

通过比较钙离子拮抗剂维拉帕米对由乙酰胆碱诱导的人食管下括约肌(LES)套索纤维和钩状纤维肌条收缩的拮抗程度,探讨维拉帕米对LES肌条舒缩的影响。

方法

应用中上段食管癌患者LES作为研究对象,同时取食管体部和胃底肌条作为对照。分离出食管体部、胃底、套索纤维(sling)和钩状纤维(clasp)肌束,应用离体肌条张力测定技术分别测定维拉帕米(10-3 mol/L)对由乙酰胆碱(Ach)(浓度分别为10-6、10-5、10-4、10-3 、10-2 、10-1 mol/L)诱导的4种肌条收缩的拮抗程度。

结果

食管环行肌组、胃底环形肌组和clasp组加入维拉帕米前后未见肌条收缩水平有明显改变(t=0.896,P=0.372;t=0.331,P=0.741;t=0.324,P=0.747;t=2.294,P=0.023)。sling组加入维拉帕米后,收缩能力下降,收缩水平由(17.0±5.2)g降至(14.7±6.6)g,差异有统计学意义(t=2.294,P=0.023)。

结论

维拉帕米部分阻滞了LES套索纤维的收缩,从而导致了LES的舒张。

Objective

To investigate the effects of calcium antagonist verapamil on the contraction and relaxation of human lower esophageal sphincter (LES) clasp and sling fibers induced by acetylcholine(Ach).

Methods

LES was obtained from patients with superior and middle esophageal carcinoma, and muscles of esophageal body and gastric bottom were served as controls. After isolation of muscle bundles of esophageal body, gastric bottom, sling fibers and clasp fibers, in vitro muscle stripe intensity measurement technique was employed to determine the effects of verapamil (10-3 mol/L) on the contraction and relaxation of these four muscle stripes induced by Ach(10-6, 10-5, 10-4, 10-3 , 10-2 and 10-1 mol/L).

Results

The contraction of circular muscles of esophageal body and gastric bottom and clasp fibers was not significantly changed after verapamil intervention (t=0.896, P=0.372; t=0.331, P=0.741; t=0.324, P=0.747). However, the contraction of sling fibers was significantly decreased from (17.0±5.2) g to (14.7±6.6) g after verapamil intervention (t=2.294, P=0.023).

Conclusions

Verapamil partly blocks the contraction of LES, and results in the relaxation of LES.

表1 加入维拉帕米前后4种肌条的收缩情况比较(n=6,±s,g)
图1 食管环行肌组加入维拉帕米前后肌条的收缩情况
图2 胃底环行肌组加入维拉帕米前后肌条的收缩情况
图3 clasp组加入维拉帕米前后肌条的收缩情况(n=6)
图4 sling组加入维拉帕米前后肌条的收缩情况(n=6)
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