Genome-wide decrease in DNA methylation in adults with epilepsy treated with modified ketogenic diet: A prospective...

Area of Science:

• Epigenetics
• Nutritional Neuroscience
• Metabolic Disorders

Background:

• Epilepsy is a chronic neurological disorder affecting millions worldwide.
• The modified ketogenic diet (MKD) is an established therapy for drug-resistant epilepsy.
• The molecular mechanisms underlying the anti-seizure effects of the MKD are not fully understood.

Purpose of the Study:

• To investigate the impact of the modified ketogenic diet on genome-wide DNA methylation in adults with epilepsy.
• To identify specific genes and pathways affected by the MKD at the epigenetic level.
• To explore potential molecular mechanisms linking MKD to seizure amelioration.

Main Methods:

• Prospective study of 58 adults with epilepsy on MKD for 12 weeks.
• Genome-wide DNA methylation analysis using Illumina MethylationEPIC BeadChip array.
• Statistical analysis including ANOVA, paired t-test, and FDR correction for differential methylation analysis.

Main Results:

• Observed a genome-wide decrease in DNA methylation after 4 and 12 weeks of MKD.
• Differentially methylated CpGs were annotated to genes involved in epilepsy, lipid metabolism, and transcriptional regulation.
• Five identified genes were related to inositol phosphate metabolism, suggesting a potential mechanism of action.

Conclusions:

• The MKD induces significant changes in DNA methylation patterns in adults with epilepsy.
• Epigenetic modifications, particularly in lipid and inositol phosphate metabolism pathways, may mediate the anti-seizure effects of the MKD.
• Understanding these molecular changes could lead to novel therapeutic strategies for epilepsy.