Related Experiment Videos
Human cerebral free amino acids in hepatic coma
Journal of Neural Transmission. Supplementum
|January 1, 1978
Summary
Hepatic coma alters brain amino acid levels, particularly glutamine and ammonia. L-valine administration may aid ammonia detoxification and influence amino acid uptake in the brain.
Area of Science:
- Neurochemistry
- Metabolic Disorders
Background:
- Hepatic coma is associated with significant alterations in brain amino acid composition.
- Understanding these changes is crucial for developing effective therapeutic strategies.
Purpose of the Study:
- To quantify free amino acids and related compounds in human brain autopsy specimens.
- To investigate the impact of hepatic coma and L-valine administration on brain amino acid profiles.
Main Methods:
- Column chromatography was used to determine amino acid and related compound concentrations.
- Autopsy specimens from different human brain areas were analyzed.
Main Results:
- Significant differences in tyrosine and lysine were observed between brain regions in hepatic coma patients.
- Hepatic coma brains showed higher concentrations of glutamine, isoleucine, histidine, and ammonia compared to controls.
- L-valine administration led to decreased alanine and valine, increased taurine, and reduced glutamine and ammonia levels.
Conclusions:
- L-valine may possess beneficial effects on ammonia detoxification in the brain.
- L-valine might compete with large neutral amino acids for brain uptake mechanisms.