Double pharmacological challenge on repolarization opens new avenues for drug safety research
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Double pharmacological challenge on repolarization opens new avenues for drug safety research. / Thomsen, Morten Bækgaard.
I: British Journal of Pharmacology, Bind 151, Nr. 7, 08.2007, s. 909-11.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › fagfællebedømt
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TY - JOUR
T1 - Double pharmacological challenge on repolarization opens new avenues for drug safety research
AU - Thomsen, Morten Bækgaard
PY - 2007/8
Y1 - 2007/8
N2 - The pharmaceutical industry is testing new potential drugs for their propensity to prolong human cardiac repolarization, and regards this as a sign of proarrhythmic risk. Many studies have dethroned the common perception that prolonged repolarization is a reliable surrogate marker for torsades de pointes (TdP) arrhythmia. Both the pharmaceutical industry and the regulatory bodies are neglecting the available proarrhythmia models. In vitro studies have suggested that combined pharmacological hits on repolarization will produce a superior substrate for in vivo proarrhythmia, compared to the single-drug assessment. By using consecutive pharmacological challenges, a simple model is proposed, in which combinatorial pharmacology is employed to provoke TdP in the conscious dog. The pharmaceutical industry interested in evaluating the proarrhythmic potential of their present and future drugs now has a simple means of doing so.
AB - The pharmaceutical industry is testing new potential drugs for their propensity to prolong human cardiac repolarization, and regards this as a sign of proarrhythmic risk. Many studies have dethroned the common perception that prolonged repolarization is a reliable surrogate marker for torsades de pointes (TdP) arrhythmia. Both the pharmaceutical industry and the regulatory bodies are neglecting the available proarrhythmia models. In vitro studies have suggested that combined pharmacological hits on repolarization will produce a superior substrate for in vivo proarrhythmia, compared to the single-drug assessment. By using consecutive pharmacological challenges, a simple model is proposed, in which combinatorial pharmacology is employed to provoke TdP in the conscious dog. The pharmaceutical industry interested in evaluating the proarrhythmic potential of their present and future drugs now has a simple means of doing so.
KW - Animals
KW - Chromans
KW - Delayed Rectifier Potassium Channels
KW - Dogs
KW - Drug Synergism
KW - Drug Toxicity
KW - Electrocardiography
KW - Humans
KW - Long QT Syndrome
KW - Phenethylamines
KW - Potassium Channel Blockers
KW - Potassium Channels, Voltage-Gated
KW - Rabbits
KW - Risk Factors
KW - Sulfonamides
KW - Torsades de Pointes
U2 - 10.1038/sj.bjp.0707299
DO - 10.1038/sj.bjp.0707299
M3 - Journal article
C2 - 17549050
VL - 151
SP - 909
EP - 911
JO - British Journal of Pharmacology
JF - British Journal of Pharmacology
SN - 0007-1188
IS - 7
ER -
ID: 45965505