PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16757081-6 2006 There were significant relationships between paraoxon formation from parathion (5 microM, 20 microM and 200 microM) and the CYP3A4/5, CYP2C8 and CYP1A2 mediated reactions, although only the latter two isoforms correlated significantly with the lowest parathion concentration. Parathion 69-78 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 124-130 16757081-6 2006 There were significant relationships between paraoxon formation from parathion (5 microM, 20 microM and 200 microM) and the CYP3A4/5, CYP2C8 and CYP1A2 mediated reactions, although only the latter two isoforms correlated significantly with the lowest parathion concentration. Parathion 251-260 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 124-130 12669189-7 2003 These data indicate that CYP3A4/5 and CYP2C8, which constitute up to 40% of human liver P450s, are the most significant participants in the metabolism of parathion. Parathion 154-163 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 25-31 10996483-5 2000 Addition of the CYP3A4 inhibitor ketoconazole to microsomal incubations resulted in 66% cholinesterase activity with diazinon, 20% with parathion and 5% with chlorpyrifos. Parathion 136-145 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 16-22 10996483-6 2000 The unexpected finding that CYP2D6, as well as CYP3A4, catalysed oxidative biotransformation was confirmed for chlorpyrifos and parathion using microsomes prepared from a human lymphoblastoid cell line expressing CYP2D6. Parathion 128-137 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 47-53 10794390-3 2000 Recent studies using cDNA expressed human CYPs have suggested that CYP3A4 is the principal human CYP involved in the oxidation of parathion and probably other organo(thio)phosphate (OP) insecticides and thus PM in this CYP might influence susceptibility to OP. Parathion 130-139 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 67-73 10484078-9 1999 Greater inhibition was produced by the less selective CYP3A inhibitors parathion, quinidine, and ketoconazole; CYP1A inhibitors were ineffective. Parathion 71-80 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 54-59 10414794-5 1999 The activation of parathion (200 microM) was positively correlated with nifedipine oxidation, indicating the involvement of CYP3A. Parathion 18-27 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 124-129 10414794-7 1999 Paraoxon formation from parathion was markedly reduced by CYP3A inhibitors. Parathion 24-33 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 58-63 10414794-10 1999 This study has determined wide interindividual variations in capacity to metabolise parathion, mainly by CYP3A, which may influence its manifest toxicity. Parathion 84-93 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 105-110 9023313-5 1997 Linear regression of rates of parathion oxidation with those of other microsomal CYP reactions implicated CYP3A4 in the reaction. Parathion 30-39 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 106-112 9023313-7 1997 CYP 3A4 expressed in lymphoblastoid cell lines was an efficient catalyst of parathion oxidation, although CYP 1A2 and 2B6 also catalyzed the activity. Parathion 76-85 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 0-7 9023313-8 1997 The CYP3A4 inhibitors ketoconazole and triacetyloleandomycin decreased the observed rate of microsomal parathion oxidation, but chemicals known to interact preferentially with other human CYP were essentially noninhibitory. Parathion 103-112 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 4-10 9023313-14 1997 In summary, these findings strongly implicate CYP 3A4 as the principal catalyst of parathion oxidation in human liver, although other CYP may play a lesser role. Parathion 83-92 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 46-53 27441453-6 2016 Using menadione as the redox-cycling chemical, we discovered that this enzymatic reaction blocks metabolic activation of parathion in rat and human liver microsomes and in recombinant CYPs important to parathion metabolism, including CYP1A2, CYP2B6, and CYP3A4. Parathion 121-130 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 254-260 26196221-7 2015 Moreover, parathion and bisphenol A are the activators of PXR and inducers of CYP3A4 mRNA and protein in the primary cultures of human hepatocytes. Parathion 10-19 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 78-84