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Metabolomic changes in adults with status epilepticus: A human case-control study
Aurélie Hanin1,2,3, Céline Chollet4, Sophie Demeret5
1Comprehensive Epilepsy Center, Department of Neurology, Yale University School of Medicine, New Haven, Connecticut, USA.
Epilepsia
|February 10, 2024
Summary
Status epilepticus (SE) involves prolonged seizures causing neuronal damage. This study reveals altered amino acid and lipid metabolism, particularly the tryptophan kynurenine pathway, offering targets for neuroprotection.
Area of Science:
- Neuroscience
- Biochemistry
- Metabolomics
Background:
- Status epilepticus (SE) is a critical neurological emergency with severe consequences.
- Understanding SE's pathophysiology is vital for preventing neuronal injury and long-term disability.
Purpose of the Study:
- To investigate the metabolic alterations in patients with status epilepticus.
- To identify key metabolic pathways involved in SE-induced neuronal damage.
Main Methods:
- Untargeted metabolomic analysis using LC-HRMS on plasma and cerebrospinal fluid (CSF).
- Comparison of metabolite profiles between 78 SE patients and 107 controls.
- Enrichment analysis to identify affected metabolic pathways.
Main Results:
- Identified 76 plasma and 37 CSF differential metabolites in SE patients.
- Key affected pathways include amino acid metabolism (tryptophan, glutamate, alanine), pyrimidine metabolism, and lipid homeostasis.
- Elevated quinolinic acid and pyruvate, decreased arginine and tryptophan observed; the tryptophan kynurenine pathway was significantly altered.
Conclusions:
- The tryptophan kynurenine pathway plays a significant role in SE pathophysiology.
- Identified metabolic pathways offer potential targets for novel neuroprotective therapies against SE consequences.
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