Structural determinants for histamine H1 affinity, hERG affinity and QTc prolongation in a series of terfenadine analogs
摘要:
In the late 1980's reports linking the non-sedating antihistamines terfenadine and astemizole with torsades de pointes, a form of ventricular tachyarrhythmia that can degenerate into ventricular fibrillation and sudden death, appeared in the clinical literature. A substantial body of evidence demonstrates that the arrhythmogenic effect of these cardiotoxic antihistamines, as well as a number of structurally related compounds, results from prolongation of the QT interval due to suppression of specific delayed rectifier ventricular K+ currents via blockade of the hERG-IKr channel. In order to better understand the structural requirements for hERG and H-1 binding for terfenadine, a series of analogs of terfenadine has been prepared and studied in both in vitro and in vivo hERG and H-1 assays. (C) 2009 Elsevier Ltd. All rights reserved.
Provided herein are compositions and methods for treating or preventing infection.
本文提供了用于治疗或预防感染的组合物和方法。
Structural determinants for histamine H1 affinity, hERG affinity and QTc prolongation in a series of terfenadine analogs
作者:Robert Aslanian、John J. Piwinski、Xiaohong Zhu、Tony Priestley、Steve Sorota、Xiao-Yi Du、Xue-Song Zhang、Robbie L. McLeod、Robert E. West、Shirley M. Williams、John A. Hey
DOI:10.1016/j.bmcl.2009.07.047
日期:2009.9
In the late 1980's reports linking the non-sedating antihistamines terfenadine and astemizole with torsades de pointes, a form of ventricular tachyarrhythmia that can degenerate into ventricular fibrillation and sudden death, appeared in the clinical literature. A substantial body of evidence demonstrates that the arrhythmogenic effect of these cardiotoxic antihistamines, as well as a number of structurally related compounds, results from prolongation of the QT interval due to suppression of specific delayed rectifier ventricular K+ currents via blockade of the hERG-IKr channel. In order to better understand the structural requirements for hERG and H-1 binding for terfenadine, a series of analogs of terfenadine has been prepared and studied in both in vitro and in vivo hERG and H-1 assays. (C) 2009 Elsevier Ltd. All rights reserved.