cytochromes P450
Involvement of Cytochromes P450 in Drug Drug Interactions: An Overview
... Involvement of Cytochromes P450 in Drug Drug Interactions An Overview CONTINUING MEDICAL EDUCATION Involvement of Cytochromes P450 in Drug Drug Interactions An Overview C E Ong, PhD*, L K Teh, PhD**,[.] ...
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Isolation, characterization and induction studies of human cytochromes P450
... f P450 genes exist, 481 genes and 22 putative pseudogenes have been identified in 85 eukaryotes (including vertebrates, invertebrates, fungi and plants) and 20 prokaryote species (Nelson et a i, ...cytochrome ...
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The Anticancer Drug Ellipticine Induces Cytochromes P450 1A1, 1A2 and 3A, Cytochrome b5 and NADPH:Cytochrome P450 Oxidoreductase in Rat Liver, Kidney and Lung
... initiation of apoptosis (for a summary see [1-6]). Ellipticine was found (i) to arrest cell cycle progression due to modulation of levels of cyclinB1 and Cdc2, and phosphorylation of Cdc2 in human mammary adenocarcinoma ...
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Dissecting the expression landscape of cytochromes P450 in hepatocellular carcinoma: towards novel molecular biomarkers
... For cytochromes P450, similar criteria were used, and a cut- off of a mean expression of at least 2 TPM in one or the other condition was added to allow efficient detection of the transcript in ...
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Small Heterodimer Partner Regulates Circadian Cytochromes p450 and Drug-Induced Hepatotoxicity
... mechanism for the body’s defense against xenobiotic threats [ 3 ]. Xenobiotic metabolism is generally divided into three phases, namely, phase I modific- ation, phase II conjugation and phase III excretion [4]. ...
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Review Article The roles of cytochromes P450 in vascular biology and cardiovascular homeostasis
... Abstract: Cardiovascular disease and atherosclerosis are human health crises that remain the leading cause of death worldwide. The cytochromes P450 (CYPs) are key metabolizing enzymes of both xenobiotics ...
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Up regulation on cytochromes P450 in rat mediated by total alkaloid extract from Corydalis yanhusuo
... The effects of YHS on drug-metabolizing enzymes such as cytochromes P450 (CYPs), which are important in controlling xenobiotic metabolism, have occasionally been reported. CYPs is a group of hemoproteins ...
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Structural and Functional Exploration of an Artificial Family of Cytochromes P450
... ~3,000 P450 heme proteins that correctly fold and incorporate a heme cofactor by recombining three cytochromes P450 at seven crossover locations chosen to minimize structural ...chimeric P450 ...
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Cytochromes P450: a success story
... P450 enzymes have been compared to a blowtorch. They cat- alyze regiospecific and stereospecific oxidative attack of non- activated hydrocarbons at physiological temperatures. Such a reaction, uncatalyzed, would ...
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MutaCYP: Classification of missense mutations in human cytochromes P450
... mutations altering enzyme activity can occur at the heme- binding site, within the protein core, and at the protein interface involved in electron transfer from the redox part- ners, ferredoxin (FDX) and P450 ...
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Cytochrome P450 humanised mice
... Humans are exposed to countless foreign compounds, typically referred to as xenobiotics. These can include clinically used drugs, environmental pollutants, food additives, pesticides, herbicides and even natural plant ...
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Identification of the fetal liver cytochrome CYP3A7 in human endometrium and placenta
... cytochromes P450 in human liver, CYP3A. To investigate the possible role in these extrahepatic tissues of the CYP3A microsomal hemoproteins, we analyzed placental and endometrial microsomes on Western blots ...
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Lignin degradation potential and draft genome sequence of Trametes trogii S0301
... CYPs: cytochromes P450; CAZymes: carbohydrate-active enzymes; CDS: coding region of a gene; LTR: long terminal repeat; LINEs: long interspersed nuclear elements; SINEs: short interspersed elements; COG: ...
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Nonplanar Porphyrins by N Substitution: A Neglected Pathway
... The destruction of cytochromes P450 by the substrate results in the formation of N-alkylated porphyrins and their accumulation in the liver.[6] Additionally, such compounds have been fou[r] ...
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Prediction of reacting atoms for the major biotransformation reactions of organic xenobiotics
... Drugs are usually inactivated by CYPs, but certain drugs are transformed to active substances. In these cases, the metabolites exhibit pharmacological activity and affinity to the target receptors of the pharmaceutical. ...
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The regulation of cytochrome P450 2B gene expression by the anti-epileptic drug phenobarbital
... cytochrome P450 superfamily reflects the w ide variety of reactions they are involved ...cytochrome P450 proteins. There have been 481 cytochrome P450 genes and 22 pseudogenes described to date in 85 ...
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Previously claimed male germline stem cells from porcine testis are actually progenitor Leydig cells
... Cytochrome P450 family 11 subfamily A member 1; CYP17A1: Cytochrome P450 family 17 subfamily A member 1; DE: Differentially expressed; DMEM: Dulbecco ’ s modified Eagle medium; DPBS: Dulbecco ’ s phosphate ...
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The Terminal Oxidase Cytochrome bd Promotes Sulfide-resistant Bacterial Respiration and Growth
... strain was severely impaired (Fig. 4B). Lacking bd oxidases, the latter strain proved to be highly sensitive to sulfide, with 6 μM NaHS causing ~25% reduced cell growth, as evaluated at 2 hours after NaHS addition (inset ...
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Activation of peroxisome proliferator activated receptor alpha ameliorates ethanol induced steatohepatitis in mice
... Ethanol treatment results in fatty acids accumulation in the liver. Fatty acids are substrate of cytochrome P450 2E1 (CYP 2E1). Induction of CYP 2E1 by fatty acids is a major source of reactive oxygen species ...
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Aldosterone-producing adrenocortical carcinoma with myxoid differentiation in a cat
... pleomorphic, polygonal neoplastic cells with moderate to abundant, occasionally granular, eosinophilic cytoplasm. Lobules were separated by fine fibrovascular trabeculae, and numerous cystic cavities containing amorphous ...
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