IBRO neuroscience reports · 2026
The ketogenic diet ameliorates behavioral abnormalities in a PTZ-induced zebrafish larvae model via modulating neurotransmitter balance.
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Yang Xue, Lin Jia, Zhang Qi, Xia Yuheng, Zhou Shuizhen, Wang Yi, Li Qiang, Yu Lifei
Аннотация
PURPOSE: The ketogenic diet (KD) is a well-established therapy for drug-resistant epilepsy, reducing seizure burden in children and improving cognition in epileptic encephalopathy patients, but its underlying mechanisms remain incompletely understood. This study aimed to establish a translational zebrafish model to investigate KD's anti-epileptic potential and mechanisms, focusing on neurotransmitter homeostasis.
METHOD: Acute epilepsy was induced in 7-day post-fertilization (dpf) zebrafish larvae (n = 24/group, randomly assigned) using pentylenetetrazol (PTZ), a selective GABA-A receptor antagonist. KD was administered to the treatment group, with behavioral assays (locomotor activity, thigmotaxis), electroencephalographic (EEG) recordings, and high-performance liquid chromatography (HPLC) for neurotransmitter quantification. Statistics were analyzed via two-way ANOVA/Tukey's test or Student's t-test.
RESULTS: Results showed KD significantly ameliorated PTZ-induced epileptiform behaviors (prolonged seizure latency, reduced stage-specific duration), attenuated EEG multi-peak discharges, increased inhibitory neurotransmitters (GABA, glycine, taurine), and reversed PTZ-induced excitatory-inhibitory neurotransmitter imbalance (e.g., Glu/GABA, Gln/Tau ratios).
CONCLUSION: We established a PTZ-induced amphibian epilepsy model with KD intervention. KD exerts anti-epileptic effects, likely mediated partially by rebalancing central nervous system neurotransmitter homeostasis, providing a valuable translational platform for further mechanism research.
METHOD: Acute epilepsy was induced in 7-day post-fertilization (dpf) zebrafish larvae (n = 24/group, randomly assigned) using pentylenetetrazol (PTZ), a selective GABA-A receptor antagonist. KD was administered to the treatment group, with behavioral assays (locomotor activity, thigmotaxis), electroencephalographic (EEG) recordings, and high-performance liquid chromatography (HPLC) for neurotransmitter quantification. Statistics were analyzed via two-way ANOVA/Tukey's test or Student's t-test.
RESULTS: Results showed KD significantly ameliorated PTZ-induced epileptiform behaviors (prolonged seizure latency, reduced stage-specific duration), attenuated EEG multi-peak discharges, increased inhibitory neurotransmitters (GABA, glycine, taurine), and reversed PTZ-induced excitatory-inhibitory neurotransmitter imbalance (e.g., Glu/GABA, Gln/Tau ratios).
CONCLUSION: We established a PTZ-induced amphibian epilepsy model with KD intervention. KD exerts anti-epileptic effects, likely mediated partially by rebalancing central nervous system neurotransmitter homeostasis, providing a valuable translational platform for further mechanism research.