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- W2139965181 abstract "The wild-type (WT) Cprlox/lox (cytochrome P450 oxidoreductase, Cpr) mouse is an ideal model to assess the contribution of P450 enzymes to the metabolic activation and disposition of environmental xenobiotics. In the present study, we examined the effect of in utero exposure to benzo(a)pyrene [B(a)P] aerosol on Sp4 and N-methyl-D-aspartate (NMDA)–dependent systems as well as a resulting behavioral phenotype (object discrimination) in Cpr offspring. Results from in utero exposure of WT Cprlox/lox mice were compared with in utero exposed brain-Cpr-null offspring mice. Null mice were used as they do not express brain cytochrome P4501B1–associated NADPH oxidoreductase (CYP1B1-associated NADPH oxidoreductase), thus reducing their capacity to produce neural B(a)P metabolites. Subsequent to in utero (E14–E17) exposure to B(a)P (100 μg/m3), Cprlox/lox offspring exhibited: (1) elevated B(a)P metabolite and F2-isoprostane neocortical tissue burdens, (2) elevated concentrations of cortical glutamate, (3) premature developmental expression of Sp4, (4) decreased subunit ratios of NR2B:NR2A, and (5) deficits in a novelty discrimination phenotype monitored to in utero exposed brain-Cpr-null offspring. Collectively, these findings suggest that in situ generation of metabolites by CYP1B1-associated NADPH oxidoreductase promotes negative effects on NMDA-mediated signaling processes during the period when synapses are first forming as well as effects on a subsequent behavioral phenotype." @default.
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- W2139965181 date "2011-10-10" @default.
- W2139965181 modified "2023-10-03" @default.
- W2139965181 title "PAH Particles Perturb Prenatal Processes and Phenotypes: Protection from Deficits in Object Discrimination Afforded by Dampening of Brain Oxidoreductase Following In Utero Exposure to Inhaled Benzo(a)pyrene" @default.
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- W2139965181 doi "https://doi.org/10.1093/toxsci/kfr261" @default.
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