Hypothalamic digoxin, cerebral dominance, and lipid metabolism

Area of Science:

• Biochemistry
• Neuroscience
• Metabolomics

Background:

• Cerebral dominance is associated with distinct cognitive and functional lateralization.
• Lipid metabolism plays a crucial role in cellular function and overall health.
• Understanding the biochemical underpinnings of hemispheric dominance is essential for comprehending human physiology.

Purpose of the Study:

• To investigate the biochemical differences in lipid metabolism between individuals with right and left hemispheric dominance.
• To examine the activity of HMG CoA reductase and serum levels of isoprenoidal metabolites in relation to cerebral dominance.

Main Methods:

• Assessed HMG CoA reductase activity.
• Measured serum levels of isoprenoidal metabolites: digoxin, dolichol, and ubiquinone.
• Analyzed RBC membrane Na(+)-K+ ATPase activity and serum magnesium levels.

Main Results:

• Right hemispheric dominance correlated with increased HMG CoA reductase activity, elevated serum digoxin, reduced ubiquinone, increased dolichol, and decreased Na(+)-K+ ATPase activity and magnesium.
• Left hemispheric dominance exhibited opposite biochemical patterns.
• Right hemispheric dominance indicates a hyperdigoxinemic state with inhibited Na(+)-K+ ATPase and an upregulated isoprenoid pathway.

Conclusions:

• Cerebral dominance significantly regulates lipid metabolism.
• Distinct biochemical profiles characterize right and left hemispheric dominance, impacting isoprenoid pathways and ion transport.
• These findings suggest a link between brain lateralization and metabolic regulation.