ANTI-SRS-A EFFECT OF TETRANDRINE
Hong Zhang
Abstract
Hong Zhang
Abstract
Tetrandrine was shown to significantly inhibit the contraction of guinea pig tracheal or lung strips induced by SRS-A 100 U/ml in vitro. It was also found to inhibit the contractile effect on human bronchial or lung strips induced by SRS-A U/ml in vitro.Tetrandrine 25 mg/kg given intravenously prior to SRS-A antagonized the augmentation of respiratory airflow by SRS-A.The SRS-A induced asthmatic attack of guinea pig was also alleviated by tetrandrine. The anti-SRS-A effect of tetrandrine was reduced when the extracellular Ca~(++) level was elevated and vice versa.
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Tetrandrine was shown to significantly inhibit the contraction of guinea pig tracheal or lung strips induced by SRS-A 100 U/ml in vitro. It was also found to inhibit the contractile effect on human bronchial or lung strips induced by SRS-A U/ml in vitro.Tetrandrine 25 mg/kg given intravenously prior to SRS-A antagonized the augmentation of respiratory airflow by SRS-A.The SRS-A induced asthmatic attack of guinea pig was also alleviated by tetrandrine. The anti-SRS-A effect of tetrandrine was reduced when the extracellular Ca~(++) level was elevated and vice versa.
Key concepts: Tetrandrine, Guinea pig, Contraction (grammar), In vitro, Pharmacology, Chemistry, Lung, Respiratory system