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![Radiosynthesis of 1-(2-[18F]Fluoroethyl)-L-Tryptophan using a One-pot, Two-step Protocol](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F63025.jpg&w=3840&q=50)
Radiosynthesis of 1-(2-[18F]Fluoroethyl)-L-Tryptophan using a One-pot, Two-step Protocol
Published on: September 21, 2021
Tryptophan metabolism in alcoholism
1Cardiff and Vale NHS Trust, Biomedical Research Laboratory, Whitchurch Hospital, Cardiff CF14 7XB, UK. abdulla.badawy@cdffcom-tr.wales.nhs.uk
Alcohol intake affects tryptophan metabolism, altering brain serotonin levels. These changes may explain alcohol-related behaviors and withdrawal symptoms, suggesting potential therapeutic targets.
Area of Science:
- Neuroscience
- Biochemistry
- Addiction Research
Background:
- Alcohol (ethanol) consumption significantly impacts tryptophan (Trp) metabolism.
- Tryptophan metabolism alterations are linked to brain serotonin synthesis and turnover.
Purpose of the Study:
- To investigate the effects of acute and chronic alcohol intake and withdrawal on tryptophan metabolism.
- To explore the relationship between tryptophan metabolism, brain serotonin levels, and alcohol-related behaviors.
Main Methods:
- Studies in rats and mice to examine liver Trp pyrrolase (TP) activity.
- Analysis of brain serotonin synthesis and turnover in relation to circulating Trp availability.
Main Results:
- Acute alcohol enhances liver TP activity, decreasing brain serotonin; chronic intake inhibits TP, while withdrawal enhances it.
- Alcohol-preferring animal models exhibit low brain serotonin linked to liver TP enhancement.
- Alcohol-induced behavioral changes may be mediated by altered serotonin levels and Trp metabolites like quinolinate.
Conclusions:
- Tryptophan metabolism and serotonin pathways are crucial in understanding alcohol's effects and withdrawal syndromes.
- Abstinent alcoholics might self-medicate serotonin deficiency through alcohol consumption.
- Further research into Trp metabolism in abstinence could inform better prevention and treatment strategies.
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