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- W2019995104 abstract "To screen beta2-adrenergic receptor (beta2-AR) agonists from Radix Aconiti Lateralis Preparata (RALP) as potential drug leads for asthma using a sensitive cell-based agonist assay.The beta2-AR gene was stably expressed by Chinese hamster ovary (CHO) cells also stably expressing a cyclic adenosine monophosphate (AMP) response element-linked enhanced green fluorescent protein reporter gene. The cells were used to screen agonists from high-performance liquid chromatographic fractions of an extract of RALP. The fraction with the highest activity was selected for further compound isolation and the study of the structure-activity relationship. Its active compound was further identified by chromatography and mass spectrometry.Bioactivity-directed fractionation of the crude extract of RALP led to the isolation and characterization of the effective compound, namely hignamine. It could dose-dependently relax the isolated guinea pig trachea strip precontraction with acetylcholine with EC(50) value of (2.60+/-0.36)x10(-5) mol/L. Further in vivo studies also displayed that hignamine could protect experimental asthma model induced by histamine in guinea pigs to prolong the latent periods of asthma.Hignamine, as a beta2-AR agonist existing in the extract of RALP, is the key compound contributing to the successful relief of the bronchoconstriction." @default.
- W2019995104 created "2016-06-24" @default.
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- W2019995104 date "2008-10-01" @default.
- W2019995104 modified "2023-10-06" @default.
- W2019995104 title "Identification of higenamine in Radix Aconiti<i>Lateralis Preparata</i>as a beta2-adrenergic receptor agonist<sup>1</sup>" @default.
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- W2019995104 doi "https://doi.org/10.1111/j.1745-7254.2008.00859.x" @default.
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