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  • Title: [The effect of kudingcha (Ilex latifolia Thunb.) on the contraction of isolated guinea-pig tracheal smooth muscle in vitro].
    Author: Jiang JM, Xu SB, Kong YC.
    Journal: Zhongguo Zhong Yao Za Zhi; 2001 Dec; 26(12):853-6. PubMed ID: 12776338.
    Abstract:
    OBJECTIVE: To study the effects of Kudingcha (Ilex latifolia Thunb., IL) on the isolated guinea pig tracheal smooth muscle in vitro. METHOD: By obtaining CaCl2 and Histamine accumulative dose-response curves, to observe the influences of IL on the contraction of tracheal strips induced by calcium and some asthmogenic mediators. RESULT: CaCl2 and histamine caused significant contraction of tracheal smooth muscle and pD2 was 3.55 and 5.34 respectively. After incubated with IL, the dose-response curves of CaCl2 and histamine were significantly shifted to the right, and the maximal contractile force was reduced. IL could also inhibit isolated tracheal strip contraction induced by acetylcholine 3 x 10(-6) mol.L-1 and histamine 3 x 10(-6) mol.L-1, and IC50 was 0.16 mg.ml-1 and 0.21 mg.ml-1. CONCLUSION: Kudingcha has significant dilated effects on tracheal smooth muscle.
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