Beneficial effect of tetrandrine on refractory epilepsy via suppressing P-glycoprotein.

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Chen Y, Xiao X, Wang C, Jiang H, Hong Z, Xu G

Beneficial effect of tetrandrine on refractory epilepsy via suppressing P-glycoprotein.

Int J Neurosci. 2015;125(9):703-10. doi: 10.3109/00207454.2014.966821. Epub 2014 Oct 22.

PubMed ID

25233150 [ View in PubMed

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Abstract

Patients with refractory epilepsy are resistance to antiepileptic drugs (AEDs). The mechanisms of drug resistance are varied, but one of them is the overexpression of multidrug transporters, such as P-glycoprotein (P-gp), in the brain. Tetrandrine (TTD) is a bis-benzylisoquinoline alkaloid isolated from the root of Stephania tetrandra (S, Moore) and is found to have a favorable effect against multidrug resistance (MDR) in chemotherapy. However, whether TTD affects AEDs in refractory epilepsy is unknown. In this study, we investigated the change in AED treatment efficacy in doxorubicin-induced drug resistant cells after TTD administration. We also examined the effect of TTD on seizure behaviors in the refractory epileptic rats, specifically the expression of MDR1 mRNA and P-gp protein in the cortex and hippocampus of the refractory epileptic rats. Our results demonstrated that TTD decreased cell resistance to phenytoin and valproate. TTD decreased seizure rate and increased the treatment efficacy of AEDs by reducing the expression of P-gp at mRNA and protein levels in vivo. These data support the use of TTD as an adjuvant drug for treating refractory epilepsy.

DrugBank Data that Cites this Article

Drug Targets

Drug	Target	Kind	Organism	Pharmacological Action	Actions
Tetrandrine	P-glycoprotein 1	Protein	Humans	Unknown	Inhibitor	Details