Edward L. Croom

author keywords: Chlorpyrifos; CYP isoform; Desulfuration; Dearylation; Human liver microsomes; Organophosphorothioate pesticides

MeSH headings : Animals; Aryl Hydrocarbon Hydroxylases / metabolism; Cell Line; Chlorpyrifos / metabolism; Chlorpyrifos / toxicity; Cytochrome P-450 CYP2B6; Cytochrome P-450 CYP2C19; Cytochrome P-450 CYP3A / metabolism; Cytochrome P-450 Enzyme System / genetics; Cytochrome P-450 Enzyme System / metabolism; Humans; Insecticides / metabolism; Insecticides / toxicity; Isoenzymes / genetics; Isoenzymes / metabolism; Microsomes, Liver / drug effects; Microsomes, Liver / enzymology; Oxidoreductases, N-Demethylating / metabolism; Substrate Specificity / drug effects; Substrate Specificity / physiology

TL;DR: Individual variations in CPO production may need to be considered in determining the risk of chlorpyrifos poisoning, and the combination of ketoconazole and ticlopidine inhibited the majority of TCP and CPO formation. (via Semantic Scholar)

author keywords: CYP450; Ontogeny; CYP2B6; CYP3A; Hepatic

MeSH headings : Adolescent; Age Factors; Aryl Hydrocarbon Hydroxylases / biosynthesis; Aryl Hydrocarbon Hydroxylases / chemistry; Aryl Hydrocarbon Hydroxylases / genetics; Child; Child, Preschool; Cytochrome P-450 CYP2B6; Female; Gene Expression Regulation, Developmental / physiology; Gene Expression Regulation, Enzymologic / physiology; Genotype; Humans; Infant; Male; Microsomes, Liver / enzymology; Oxidoreductases, N-Demethylating / biosynthesis; Oxidoreductases, N-Demethylating / chemistry; Oxidoreductases, N-Demethylating / genetics

TL;DR: Hepatic CYP2B6 protein levels were characterized in microsomal protein preparations isolated from a pediatric liver bank and showed consistency with different mechanisms controlling the ontogeny and constitutive expression of these enzymes and the lack of significant induction in the pediatric samples. (via Semantic Scholar)