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UDP-glucuronosyltransferases (UGTs) in neuro-olfactory tissues: expression, regulation, and function
Jean-Marie Heydel1, Elzbieta J Holsztynska, Arièle Legendre
1INRA/Université de Bourgogne, UMR 1129 FLAVIC, Dijon, France. jean-marie.heydel@u-bourgogne.fr
Drug Metabolism Reviews
|January 14, 2010
Summary
This study reveals high expression of uridine diphosphate (UDP)-glucuronosyltransferases (UGTs) in the olfactory system, suggesting roles in detoxification and modulating olfactory perception.
Area of Science:
- Neuroscience
- Biochemistry
- Pharmacology
Background:
- Uridine diphosphate (UDP)-glucuronosyltransferases (UGTs) are crucial enzymes in xenobiotic metabolism.
- The olfactory system, including the olfactory epithelium, bulb, and cortex, processes sensory information and is exposed to environmental compounds.
- The role of UGTs within the olfactory system has not been extensively studied.
Purpose of the Study:
- To review and quantitatively analyze the expression and spatial distribution of UGTs in the mouse olfactory system.
- To identify novel UGT isoforms expressed in the brain.
- To explore the potential functions of olfactory UGTs in detoxification and olfactory processing.
Main Methods:
- Utilized high-throughput in situ hybridization data from the Allen Brain Atlas (ABA).
- Performed quantitative analysis of UGT gene expression across olfactory structures.
- Reviewed existing literature on UGTs and xenobiotic transport to the brain.
Main Results:
- The olfactory area exhibits the highest expression of UGTs in the central nervous system.
- Identified UGT isoforms in the brain that were not previously recognized.
- Olfactory UGTs are implicated in the detoxification of xenobiotics entering via the nasal pathway.
- These UGTs also play a role in metabolizing compounds essential for olfactory function.
Conclusions:
- The olfactory system is a significant site for UGT activity, beyond detoxification.
- Olfactory UGTs are involved in perireceptor events modulating olfactory perception.
- These findings highlight the importance of UGTs in maintaining olfactory homeostasis and processing sensory information.
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