›› 2016, Vol. 43 ›› Issue (6): 1572-1578.doi: 10.16431/j.cnki.1671-7236.2016.06.026

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Effects of Alcohol Extract of Aster tataricus L.f.on the Contraction of Guinea Pig Tracheal Smooth Muscle in vitro

PENG Wen-jing1, XIN Rui-hua1,2,3,4, LIU Yan1, LUO Yong-jiang1,2,3,4, WANG Gui-bo1,2,3,4, LUO Chao-ying1,2,3,4, XIE Jia-sheng1,2,3,4, LI Jin-yu1,2,3,4, ZHENG Ji-fang1,2,3,4   

  1. 1. Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China;
    2. Key Laboratory of New Animal Drug Project of Gansu Province, Lanzhou 730050, China;
    3. Engineering & Technology Research Center of Traditional Chinese Veterinary Medicine of Gansu Province, Lanzhou 730050, China;
    4. Key Laboratory of Veterinary Pharmaceutics Development, Ministry of Agriculture, Lanzhou 730050, China
  • Received:2015-12-04 Online:2016-06-20 Published:2016-07-11

Abstract: The aim of the experiment was to study the effect of alcohol extract of Aster tataricus L.f.on the contraction of isolated guinea pig tracheal smooth muscle.The guinea pig tracheal smooth muscle was prepared by isolated tracheal thermostatic perfusion method.The effects of Aster tataricus L.f.on tracheal smooth muscle under the resting state and contraction stimulated by acetylcholine (Ach),histamine (His),CaCl2,Ca2+ release and influx in cells without calcium were measured by BL-420F biological function experiment systems.The results showed that Aster tataricus L.f.could induce the contraction of isolated trachea at resting state at a low concentrations of 0.002 to 0.008 g/mL and exerted a relaxation on the isolated trachea when at the higher concentrations of 0.008 to 0.196 g/mL.All of the three concentrations of Aster tataricus L.f.could inhibit the tension stimulated by Ach,His and CaCl2 which were antispasmodic agents,led to the non-parallelled rightward moving of cumulative concentration-response curve and the decline of maximal responses.The suppressive effect on His was the strongest,followed by Ach and CaCl2,and the suppression could counteract the contraction induced by extracellular Ca2+influx significantly,and they were all expressed concentration-dependent manner.These results indicated the alcohol extract of Aster tataricus L.f.could relax tracheal smooth muscle by acting on M-receptor and histamine receptor and blocking Ca2+ passage,thus inhibiting extracellular Ca2+influx.

Key words: alcohol extract of Aster tataricus L.f.; guinea pig; tracheal smooth muscle; changes of tension

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