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Updated: Jan 11, 2026

An Intestine/Liver Microphysiological System for Drug Pharmacokinetic and Toxicological Assessment
Published on: December 3, 2020
Extrahepatic drug metabolizing enzymes.
1Department of Pharmacology, School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Israel.
Extrahepatic drug-metabolizing enzymes show unique regulation tied to tissue function. Hormonal effects on these enzymes may involve tissue-specific transcription factor activity.
Area of Science:
- Pharmacology
- Biochemistry
- Molecular Biology
Background:
- Drug metabolizing enzymes (DMEs) are crucial for xenobiotic and endogenous compound metabolism.
- While hepatic DMEs are well-studied, extrahepatic DME activity is increasingly recognized.
Purpose of the Study:
- To review the unique regulatory mechanisms of extrahepatic DMEs.
- To explore the association between DME regulation, tissue function, and hormonal influences.
Main Methods:
- Literature review of studies investigating extrahepatic DME expression and activity.
- Analysis of evidence for tissue-specific regulation and hormonal control.
Main Results:
- Expression and activity of several extrahepatic DMEs are uniquely regulated, correlating with specific tissue functions.
- Hormonal regulation of these enzymes may occur via tissue-specific transcription factor distribution and responses.
Conclusions:
- Extrahepatic DME regulation is complex and tissue-specific, differing from hepatic patterns.
- Hormonal influences play a significant role, mediated by tissue-specific molecular mechanisms.
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