首页> 外文期刊>Seizure: the journal of the British Epilepsy Association >Isobolographic characterization of the anticonvulsant interaction profiles of levetiracetam in combination with clonazepam, ethosuximide, phenobarbital and valproate in the mouse pentylenetetrazole-induced seizure model.
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Isobolographic characterization of the anticonvulsant interaction profiles of levetiracetam in combination with clonazepam, ethosuximide, phenobarbital and valproate in the mouse pentylenetetrazole-induced seizure model.

机译:在小鼠戊四唑诱发的癫痫发作模型中,左乙拉西坦与氯硝西am,乙妥西米特,苯巴比妥和丙戊酸盐联用的抗惊厥相互作用谱的等效线描法表征。

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摘要

This study was designed so as to characterize the interactions between levetiracetam (LEV) and the conventional antiepileptic drugs (AEDs) clonazepam (CZP), ethosuximide (ETS), phenobarbital (PB), and valproate (VPA) in suppressing pentylenetetrazole (PTZ)-induced clonic seizures in mice by use of type II isobolographic analysis. Adverse-effect profiles of the drugs in combination were determined and brain AED concentrations were measured. The combinations of VPA and ETS with LEV at the fixed-ratio of 1:2, CZP with LEV (1:20,000), and PB with LEV (1:20) were supra-additive (synergistic) in suppressing seizures. In contrast, VPA and ETS with LEV (1:1, 2:1, and 4:1), CZP with LEV (1:1000, 1:5000, and 1:10,000), and PB with LEV (1:1, 1:5, and 1:10) were additive. No adverse effects were observed. ETS significantly reduced brain LEV concentrations but no other pharmacokinetic changes were observed. The combinations of CZP with LEV (1:20,000); VPA and ETS with LEV (1:2); and PB with LEV (1:20) appear to be favorable combinations exerting supra-additive interactions in suppressing PTZ-induced seizures.
机译:设计该研究的目的是表征左乙拉西坦(LEV)与常规抗癫痫药(AEDs)氯硝西am(CZP),乙巯丁二酰亚胺(ETS),苯巴比妥(PB)和丙戊酸盐(VPA)在抑制戊四唑(PTZ)-中的相互作用II型等效线描记法分析在小鼠体内诱发了阵挛性癫痫发作。确定了组合药物的不良反应,并测量了大脑AED浓度。 VPA和ETS与LEV的固定比例为1:2的组合,CZP与LEV(1:20,000)的组合以及PB与LEV(1:20)的组合在抑制癫痫发作中具有超加性(协同作用)。相比之下,具有LEV(1:1、2:1和4:1)的VPA和ETS,具有LEV(1:1000、1:5000和1:10,000)的CZP和具有LEV(1:1, 1:5和1:10)是可加的。没有观察到不良反应。 ETS显着降低了脑LEV浓度,但未观察到其他药代动力学变化。 CZP与LEV的组合(1:20,000);具有LEV的VPA和ETS(1:2); PB和LEV(1:20)似乎是抑制PTZ诱发癫痫发作的超加作用的良好组合。

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