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Valproyl CoA: an active metabolite of valproate?
1Epilepsy Center, Harborview Medical Center, Seattle, WA 98104.
Medical Hypotheses
|January 1, 1990
Summary
Valproic acid
Area of Science:
- Biochemistry
- Neuroscience
- Pharmacology
Background:
- Valproic acid demonstrates antiepileptic effects with a time course suggesting active metabolites play a crucial role.
- Valproyl-CoA, a known valproate metabolite in the liver, is hypothesized to accumulate in the brain.
Purpose of the Study:
- To investigate the potential role of valproyl-CoA in the brain's antiepileptic activity of valproic acid.
- To explore the mechanism by which valproyl-CoA might influence neuronal function.
Main Methods:
- Analysis of valproate metabolism in brain tissue.
- Measurement of brain ATP concentrations.
- Assessment of Na+, K+-ATPase activity in relation to valproyl-CoA levels.
Main Results:
- Valproyl-CoA accumulation in the brain is proposed to occur via normal fatty acid turnover.
- Valproyl-CoA may stimulate Na+, K+-ATPase activity, particularly when brain ATP levels are diminished.
Conclusions:
- Valproyl-CoA is a potential key mediator of valproic acid's antiepileptic effects.
- The stimulation of Na+, K+-ATPase by valproyl-CoA offers a plausible biochemical mechanism for its therapeutic action in epilepsy.