Related Experiment Videos
Concentrations of tryptoline and methtryptoline in rat brain
P Peura1, J V Johnson, R A Yost
1Pasarow Analytical Neurochemistry Facility, Nancy Pritzker Laboratory of Behavioral Neurochemistry, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, California 94305.
Journal of Neurochemistry
|March 1, 1989
Summary
Researchers identified tryptoline and methtryptoline in rat brains using advanced mass spectrometry. Their concentrations were low, with highest levels found in the cerebellum and cortex, suggesting specific neuroanatomical roles.
Area of Science:
- Neuroscience
- Analytical Chemistry
Background:
- Tryptoline and its derivatives are endogenous compounds found in mammalian brains.
- Their precise roles and concentrations in the brain are not fully understood.
Purpose of the Study:
- To identify and quantify tryptoline, methtryptoline, 5-hydroxytryptoline, and 5-hydroxymethtryptoline in rat brain extracts.
- To investigate the neuroanatomical distribution of these compounds.
Main Methods:
- Combined gas chromatography-mass spectrometry (GC-MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS).
- Analysis of heptafluorobutyryl derivatives of target compounds.
- Quantification and identification based on retention times and mass spectral data.
Main Results:
- Tryptoline and methtryptoline were reliably detected in rat brain tissue at concentrations ranging from 0.2 to 3 ng/g.
- These compounds showed similar neuroanatomical distribution, with highest concentrations in the cerebellum and cortex.
- 5-hydroxytryptoline and 5-hydroxymethtryptoline were detected but their formation likely occurred during sample preparation.
Conclusions:
- Tryptoline and methtryptoline are present in specific regions of the rat brain.
- The presence of 5-hydroxytryptoline and 5-hydroxymethtryptoline may be artifacts of sample preparation, requiring further investigation.