Shared metabolic pathways in epilepsy and plant immunity: From evolution to diet

Area of Science:

• Biochemistry
• Neuroscience
• Plant Science

Background:

• Epilepsy is a neurological disorder characterized by recurrent seizures due to abnormal brain electrical activity.
• Vitamin B6 is crucial for neurotransmitter metabolism, with both deficiency and excess posing health risks.
• Vitamin B6 homeostasis is partly regulated by Δ1-piperideine-6-carboxylic acid (P6C), a lysine metabolite that inactivates B6 vitamers.

Purpose of the Study:

• To explore the biochemical basis of epilepsy.
• To highlight the role of vitamin B6 in human neurological health.
• To provide evolutionary perspectives on shared metabolic vulnerabilities.

Main Methods:

• Literature review of biochemical pathways.
• Analysis of conserved metabolic pathways in humans and plants.
• Examination of the role of vitamin B6 and P6C in neurological function and plant metabolism.

Main Results:

• Both humans and plants are affected by disruptions in vitamin B6 metabolism, specifically by elevated P6C levels.
• Conserved metabolic pathways, originating from ancient bacterial enzymes, govern vitamin B6 biosynthesis and lysine degradation in both organisms.
• Vitamin B6 plays a critical role in neurotransmitter metabolism, influencing seizure susceptibility.

Conclusions:

• Understanding vitamin B6 metabolism and its regulation by P6C is crucial for addressing epilepsy.
• Plant-derived nutrients, particularly vitamin B6, can support human neurological health.
• Shared metabolic pathways offer evolutionary insights into neurological disorders and vulnerabilities.