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Monoamine oxidase: radiotracer development and human studies.
Joanna S Fowler1, Jean Logan, Nora D Volkow
1Chemistry Department, Brookhaven National Laboratory, Upton, NY 11973-5000, USA. fowler@bnl.gov
Methods (San Diego, Calif.)
|August 17, 2002
Summary
Monoamine oxidase (MAO) enzymes in the brain can be measured using PET scans. These scans help researchers understand how factors like aging and smoking affect MAO activity.
Area of Science:
- Biochemistry
- Neuroscience
- Pharmacology
Background:
- Monoamine oxidase (MAO) is a crucial mitochondrial enzyme involved in amine metabolism.
- MAO exists as two subtypes, MAO A and MAO B, with distinct functions and specificities.
- MAO influences neurotransmitter levels and the metabolism of xenobiotics.
Purpose of the Study:
- To detail the use of Positron Emission Tomography (PET) for imaging and quantifying MAO A and B in the human brain.
- To explore the application of PET in assessing factors affecting MAO activity.
Main Methods:
- Utilizing Positron Emission Tomography (PET) with carbon-11 radiotracers.
- Quantifying MAO A and B enzyme activity in vivo within the living human brain.
Main Results:
- PET imaging allows for the visualization and measurement of MAO A and B distribution and levels.
- Studies have successfully measured the impact of aging, MAO inhibitor drugs, and tobacco smoke on brain MAO activity.
Conclusions:
- PET imaging is a valuable tool for studying MAO in the human brain.
- This technique enables research into how various factors modulate MAO activity, with implications for neuroscience and drug development.