@article{APS6326,
author = {Gang Bai and Yang Yang and Qian Shi and Ze Liu and Qi Zhang and Yuan-yuan Zhu},
title = {Identification of higenamine in Radix Aconiti Lateralis Preparata as a beta2-adrenergic receptor agonist},
journal = {Acta Pharmacologica Sinica},
volume = {29},
number = {10},
year = {2016},
keywords = {},
abstract = {Aim: To screen beta2-adrenergic receptor (β2-AR) agonists from Radix Aconiti Lateralis Preparata (RALP) as potential drug leads for asthma using a sensitive cell-based agonist assay.
Methods: The β2-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.
Results: Bioactivity-directed fraction-ation 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 EC50 value of (2.60±0.36) × 10−5 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.
Conclusion: Hignamine, as a β2-AR agonist existing in the extract of RALP, is the key compound contributing to the successful relief of the bronchoconstriction.},
issn = {1745-7254}, url = {http://www.chinaphar.com/article/view/6326}
}