Prevention of Pazopanib-Induced Prolonged Cardiac Repolarization and Proarrhythmic Effects.

Prevention of Pazopanib-Induced Prolonged Cardiac Repolarization and Proarrhythmic Effects.
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DOI:
10.5935/abc.20140138
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发表时间:
2014-11
影响因子:
2.6
通讯作者:
Yilmaz AU
Yilmaz AU
中科院分区:
医学4区
文献类型:
--
作者:
Akman T;Erbas O;Akman L;Yilmaz AU

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与其他酪氨酸激酶抑制剂类似,帕唑帕尼 (PZP) 可能会引起长时间的心脏复极和致心律失常作用。目的 证明 PZP 诱导的延长心脏复极和促心律失常电生理效应,并研究美托洛尔和地尔硫卓对实验大鼠模型中心电图变化(延长 QT)的可能预防作用。将 24 只 Sprague-Dawley 成年雄性大鼠随机分为 4 组(n = 6)。第一组(正常组)接受 4 mL 自来水,其他组通过口胃管口服 100 mg/kg PZP(Votrient® 片剂)。 3小时后,给动物腹腔注射以下溶液:生理盐水(SP)、正常组和第二组(对照-PZP+SP组); 1mg/kg美托洛尔(Beloc、Ampule、阿斯利康),给第三组(PZP+美托洛尔组);和1mg/kg地尔硫卓(Diltiazem,Mustafa Nevzat),至第四组(PZP+地尔硫卓组)。 1小时后,在麻醉下,通过记录I导联心电图来计算QTc。平均QTc间期值如下:正常组,99.93±3.62ms;对照-PZP+SP组,131.23±12.21ms; PZP+美托洛尔组,89.36±3.61 ms; PZP+地尔硫卓组,88.86 ± 4.04 ms。与对照-PZP+SP 组相比,PZP+美托洛尔和 PZP+地尔硫卓组的 QTc 间期均显着缩短 (p < 0.001)。美托洛尔和地尔硫卓均可阻止 PZP 诱导的 QT 间期延长。这些药物可能为与酪氨酸激酶抑制剂的使用相关的 QTc 间期延长提供有前景的预防策略。
Pazopanib (PZP) may induce prolonged cardiac repolarization and proarrhythmic effects, similarly to other tyrosine kinase inhibitors. To demonstrate PZP-induced prolonged cardiac repolarization and proarrhythmic electrophysiological effects and to investigate possible preventive effects of metoprolol and diltiazem on ECG changes (prolonged QT) in an experimental rat model. Twenty-four Sprague-Dawley adult male rats were randomly assigned to 4 groups (n = 6). The first group (normal group) received 4 mL of tap water and the other groups received 100 mg/kg of PZP (Votrient® tablet) perorally, via orogastric tubes. After 3 hours, the following solutions were intraperitoneally administered to the animals: physiological saline solution (SP), to the normal group and to the second group (control-PZP+SP group); 1 mg/kg metoprolol (Beloc, Ampule, AstraZeneca), to the third group (PZP+metoprolol group); and 1mg/kg diltiazem (Diltiazem, Mustafa Nevzat), to the fourth group (PZP+diltiazem group). One hour after, and under anesthesia, QTc was calculated by recording ECG on lead I. The mean QTc interval values were as follows: normal group, 99.93 ± 3.62 ms; control-PZP+SP group, 131.23 ± 12.21 ms; PZP+metoprolol group, 89.36 ± 3.61 ms; and PZP+diltiazem group, 88.86 ± 4.04 ms. Both PZP+metoprolol and PZP+diltiazem groups had significantly shorter QTc intervals compared to the control-PZP+SP group (p < 0.001). Both metoprolol and diltiazem prevented PZP-induced QT interval prolongation. These drugs may provide a promising prophylactic strategy for the prolonged QTc interval associated with tyrosine kinase inhibitor use.
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