Protein Information

Name CYP2E1
Synonyms CPE 1; Flavoprotein linked monooxygenase; Xenobiotic monooxygenase; Microsomal monooxygenase; CPE1; CYP2E; CYP2E1; CYP2E1 protein…

Compound Information

Name piperonyl butoxide
CAS 5-[[2-(2-butoxyethoxy)ethoxy]methyl]-6-propyl-1,3-benzodioxole

Reference List

PubMed Abstract RScore(About this table)
12593759 Pass GJ, McLean S: Inhibition of the microsomal metabolism of 1,8-cineole in the common brushtail possum (Trichosurus vulpecula) by terpenes and other chemicals. Xenobiotica. 2002 Dec;32(12):1109-26.


Diethyldithiocarbamate also inhibited 9-hydroxylation in the possum, indicating that a CYP2E1-like enzyme contributes to this reaction. 3.
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8887459 Zhao ZS, O'Brien PJ: The prevention of CCl4-induced liver necrosis in mice by naturally occurring methylenedioxybenzenes. Toxicol Appl Pharmacol. 1996 Oct;140(2):411-21.

Pretreatment with isosafrole, safrole, dihydrosafrole, and benzodioxole at dosages as low as 10 mg/kg significantly prevented the increase in plasma transaminase levels and histochemical changes associated with CCl4-induced liver necrosis, whereas piperonyl butoxide (PBO), eugenol, isoeugenol, sesamol, and curcumin did not prevent CCl4 hepatotoxicity even at 200 mg/kg.
The protective effects of isosafrole, safrole, and benzodioxole were therefore predominantly attributed to their ability to inactivate CYP2E1, the major isozyme involved in CCl4 bioactivation.
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