Related Experiment Video
Updated: Sep 7, 2025
Electrophoretic Delivery of γ-aminobutyric Acid GABA into Epileptic Focus Prevents Seizures in Mice
Published on: May 16, 2019
Targeted gut microbiota manipulation attenuates seizures in a model of infantile spasms syndrome
Chunlong Mu1, Naghmeh Nikpoor2, Thomas A Tompkins2
1Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Insights
Targeted probiotics, mimicking ketogenic diet effects, reduced infantile spasms (IS) and improved development in a rodent model. This suggests microbiota manipulation may offer a novel therapeutic strategy for pediatric epilepsy.
Area of Science:
- Neuroscience
- Microbiology
- Gastroenterology
Background:
- Infantile spasms syndrome (IS) is a severe early-onset epileptic encephalopathy with poor neurodevelopmental outcomes.
- The ketogenic diet (KD) is a second-line treatment for IS, but its efficacy is linked to gut microbiota changes.
- Targeted manipulation of gut microbiota could offer a novel therapeutic approach for IS.
Purpose of the Study:
- To investigate if mimicking KD-induced gut microbiota alterations via targeted probiotic administration can mitigate seizures in a rodent model of IS.
- To explore the impact of such interventions on developmental outcomes, antioxidant status, and proinflammatory cytokines.
Main Methods:
- Utilized a rodent model of symptomatic IS.
- Administered the KD and broad-spectrum antibiotics to assess their impact on spasm frequency and development.
- Identified specific microbial changes (e.g., increased Streptococcus thermophilus, Lactococcus lactis) associated with spasm reduction.
- Administered a targeted probiotic containing S. thermophilus and L. lactis (5:1 ratio) or a control probiotic (Ligilactobacillus salivarius) to animals on a control diet.
Main Results:
- Both KD and antibiotic administration significantly reduced spasm frequency and improved developmental outcomes in the IS model.
- Targeted probiotic administration replicated the anti-seizure effects of the KD in control diet-fed animals, improving locomotor activity.
- The probiotic intervention increased antioxidant status and decreased proinflammatory cytokines.
- A control probiotic (L. salivarius) had no significant impact on seizures or activity.
Conclusions:
- Targeted probiotic administration effectively reduces seizure frequency and improves locomotor activity in a rodent model of IS.
- These findings highlight the potential of microbiota manipulation as a therapeutic strategy for pediatric epileptic encephalopathies.
- The study provides mechanistic insights into how gut microbiota composition influences neurological function in IS.
Abstract:
Infantile spasms syndrome (IS) is a devastating early-onset epileptic encephalopathy associated with poor neurodevelopmental outcomes. When first-line treatment options, including adrenocorticotropic hormone and vigabatrin, are ineffective, the ketogenic diet (KD) is often employed to control seizures. Since the therapeutic impact of the KD is influenced by the gut microbiota, we examined whether targeted microbiota manipulation, mimicking changes induced by the KD, would be valuable in mitigating seizures. Employing a rodent model of symptomatic IS, we show that both the KD and antibiotic administration reduce spasm frequency and are associated with improved developmental outcomes. Spasm reductions were accompanied by specific gut microbial alterations, including increases in Streptococcus thermophilus and Lactococcus lactis. Mimicking the fecal microbial alterations in a targeted probiotic, we administered these species in a 5:1 ratio. Targeted probiotic administration reduced seizures and improved locomotor activities in control diet-fed animals, similar to KD-fed animals, while a negative control (Ligilactobacillus salivarius) had no impact. Probiotic administration also increased antioxidant status and decreased proinflammatory cytokines. Results suggest that a targeted probiotic reduces seizure frequency, improves locomotor activity in a rodent model of IS, and provides insights into microbiota manipulation as a potential therapeutic avenue for pediatric epileptic encephalopathies.
Related Concept Videos
01:18Antiepileptic Drugs: GABAergic Pathway Potentiators
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for...
01:20Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
01:24Epilepsy and Seizures: Overview
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...