Protein Information

Name CYP2B
Synonyms CYP2B; CYP2B7; CYP2B7P; CYP2B protein; CYP2B7P1; CYP2B7P1 protein; CYP2B7P1 proteins

Compound Information

Name dieldrin
CAS

Reference List

PubMed Abstract RScore(About this table)
7473857 Nims RW, Lubet RA: Induction of cytochrome P-450 in the Norway rat, Rattus norvegicus, following exposure to potential environmental contaminants. J Toxicol Environ Health. 1995 Nov;46(3):271-92.

In contrast, the chlorinated hydrocarbon pesticides, such as DDT, dieldrin, chlordane, and mirex, cause almost exclusively the induction of isoforms of the CYP2B (and to a lesser extent the CYP3A) subfamilies.
32(0,1,1,2) Details
8812189 Dubois M, Plaisance H, Thome JP, Kremers P: Hierarchical cluster analysis of environmental pollutants through P450 induction in cultured hepatic cells. Ecotoxicol Environ Saf. 1996 Aug;34(3):205-15.

The tested products fell into four major groups: a first group with pentachlorophenol, identified as a CYP3A inducer; a second group containing the methylcholanthrene-type inducers that increase CYP1A-related activities; a third class represented by dieldrin, a PB-type inducer; a fourth group including inert compounds or weak inducers.
On the immunoblots, specific antibodies revealed induced CYP1A1 in fetal rat hepatocytes, CYP2B in quail hepatocytes, and CYP3A7 in Hep G2 cells.
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15649640 Dehn PF, Allen-Mocherie S, Karek J, Thenappan A: Organochlorine insecticides: impacts on human HepG2 cytochrome P4501A, 2B activities and glutathione levels. Toxicol In Vitro. 2005 Mar;19(2):261-73.

This study examined the effects of the organochlorine (OC) insecticides chlordane, o,p'-DDT, dieldrin, endosulfan, kepone, methoxychlor, and toxaphene on human HepG2 cytochrome P450 (1A-EROD and 2B-PROD) activities and glutathione (GSH) levels.
These results support findings of OC insecticides inducing CYP1A, 2B in rats, with CYP2B responses more important.
1(0,0,0,1) Details
16054614 Kretschmer XC, Baldwin WS: CAR and PXR: xenosensors of endocrine disrupters? . Chem Biol Interact. 2005 Aug 15;155(3):111-28.

Furthermore, PXR and CAR induce enzymes, such as the CYP2B and CYP3A family members, responsible for the metabolism of steroid and thyroid hormones and this may alter their normal physiological function.
Environmental estrogens, such as the pesticides methoxychlor, endosulfan, dieldrin, DDT, and the plasticizer nonylphenol activate either PXR or both PXR and CAR.
1(0,0,0,1) Details