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Updated: Apr 12, 2026

Electrophoretic Delivery of γ-aminobutyric Acid GABA into Epileptic Focus Prevents Seizures in Mice
Published on: May 16, 2019
Intractable epilepsy and the P-glycoprotein hypothesis.
Guang-Xin Wang1, Da-Wei Wang2, Yong Liu1
1a Medical Institute of Paediatrics , Qilu Children's Hospital of Shandong University , Jinan , P.R. China.
Multidrug transporter P-glycoprotein (P-gp) overexpression may cause intractable epilepsy (IE) in patients unresponsive to antiepileptic drugs (AEDs). This review explores evidence linking P-gp to IE across various research areas.
Area of Science:
- Neurology
- Pharmacology
- Genetics
Background:
- Epilepsy affects over 60 million globally.
- Intractable epilepsy (IE) impacts 20-30% of patients resistant to antiepileptic drugs (AEDs).
- Mechanisms of IE are poorly understood, but P-glycoprotein (P-gp) is a potential factor.
Purpose of the Study:
- To review evidence supporting the association between P-gp overexpression and IE.
- To consolidate findings from diverse research fields.
Main Methods:
- Review of animal studies.
- Pharmacological evidence analysis.
- Examination of clinical cases and genetic studies.
Main Results:
- Evidence suggests P-gp overexpression is linked to IE.
- P-gp may mediate drug efflux at the blood-brain barrier.
- This could explain variable patient responses to AEDs.
Conclusions:
- P-gp overexpression is a significant factor in intractable epilepsy.
- Further research into P-gp's role is warranted.
- This understanding may lead to improved IE treatments.
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