Protein Information

Name CYP3A4
Synonyms CP33; CYP3; HLP; CYP3A; CP34; CYP 3A4; CYP 3; CYP3A3…

Compound Information

Name deltamethrin
CAS

Reference List

PubMed Abstract RScore(About this table)
16790556 Usmani KA, Cho TM, Rose RL, Hodgson E: Inhibition of the human liver microsomal and human cytochrome P450 1A2 and 3A4 metabolism of estradiol by deployment-related and other chemicals. Drug Metab Dispos. 2006 Sep;34(9):1606-14. Epub 2006 Jun 21.

Preincubation of CYP3A4 with chlorpyrifos, fonofos, deltamethrin, or permethrin resulted in 94, 87, 58, and 37% inhibition of E2 metabolism.
35(0,1,1,5) Details
20183062 Abass K, Turpeinen M, Pelkonen O: An evaluation of the cytochrome P450 inhibition potential of selected pesticides in human hepatic microsomes. J Environ Sci Health B. 2009 Aug;44(6):553-63.

Deltamethrin and fenvalerate were potent inhibitors of CYP2D6 (IC (50) values of approximately 3 micro M) while lambda-cyhalothrin potently inhibited both CYP2D6 and CYP3A4-mediated activities (IC (50)'s about 3-4 micro M).
33(0,1,1,3) Details
19326768 Das PC, Streit TM, Cao Y, Rose RL, Cherrington N, Ross MK, Wallace AD, Hodgson E: Pyrethroids: cytotoxicity and induction of CYP isoforms in human hepatocytes. Drug Metabol Drug Interact. 2008;23(3-4):211-36.

At 100 microM deltamethrin 2-3 fold induction of CYP1A1 and CYP2B6 mRNA was observed, while at the same time an approximately 25-fold induction of CYP3A4 was noted.
7(0,0,1,2) Details
17936932 Hodgson E, Rose RL: Human metabolic interactions of environmental chemicals. J Biochem Mol Toxicol. 2007;21(4):182-6.

OPs are potent irreversible inhibitors of testosterone metabolism by cytochrome P450 (CYP) 3A4 and of estradiol metabolism by CYP3A4 and CYP1A2.
Several agrochemicals, including fipronil and the pyrethroids, permethrin and deltamethrin, show toxicity toward human hepatocytes with fipronil being the most potent in this regard.
2(0,0,0,2) Details