1 The interaction between phenylephrine and debrisoquine was studied using normal and hypertensive human volunteers, measuring blood pressure, pulse rate and pupil diameter. Single doses of phenylephrine were given before, during and after a short course of debrisoquine treatment. 2 The circulatory effects of phenylephrine are potentiated by debrisoquine; in a few subjects this potentiation was marked and a potential hazard. 3 Limited deductions could be made about the effects of debrisoquine on baroceptor responses and adrenergic mechanisms.
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http://dx.doi.org/10.1111/j.1365-2125.1974.tb00206.x | DOI Listing |
Objective: Assess the impact of interferons and interleukin (IL)-2 and IL-6 inhibitors on cytochrome P450 (CYP) drug metabolism in human subjects.
Data Sources: PubMed search from 1980 to March 31, 2021, limited to human subjects and English language via search strategy: (biological drug names) [AND] (cytochrome [OR] CYP metabolism).
Study Selection And Data Extraction: Narrative review of human studies assessing biological drugs in select classes that affect CYP drug metabolism.
Ther Adv Urol
July 2017
Department I of Pharmacology, Center for Pharmacology, Clinical Pharmacology Unit, University Hospital Cologne (AöR), Gleueler Straße 24, 50931 Köln, Germany.
Background: The objective of this study was to examine the inhibitory potential of darifenacin, fesoterodine, oxybutynin, propiverine, solifenacin, tolterodine and trospium chloride on the seven major human cytochrome P450 enzymes (CYP) by using a standardized and validated seven-in-one cytochrome P450 cocktail inhibition assay.
Methods: An cocktail of seven highly selective probe substrates was incubated with human liver microsomes and varying concentrations of the seven test compounds. The major metabolites of the probe substrates were simultaneously analysed using a validated liquid chromatography tandem mass spectrometry (LC-MS/MS) method.
Biochim Biophys Acta Gen Subj
January 2017
UMR 8601 CNRS, University Paris Descartes, Paris Sorbonne Cité, 75270 Paris, France. Electronic address:
Background: Cytochrome P450 2U1 (CYP2U1) has been identified from the human genome and is highly conserved in the living kingdom. It is considered as an "orphan" protein as few data are available on its physiological function(s) and spectral characteristics. Its only known substrates reported so far are unsaturated fatty acids such as arachidonic acid (AA), and, more recently, N-arachidonoylserotonin (AS) and some xenobiotics related to debrisoquine (Deb) and terfenadine.
View Article and Find Full Text PDFStem Cell Res Ther
March 2015
Department of Regenerative Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fuku-ura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan.
Introduction: Chimeric mice with humanized livers were recently established by transplanting human hepatocytes. This mouse model that is repopulated with functional human hepatocytes could be a useful tool for investigating human hepatic cell biology and drug metabolism and for other preclinical applications. Successfully transplanting human hepatocytes into mice requires that recipient mice with liver failure do not reject these human cells and provide a suitable microenvironment (supportive niche) to promote human donor cell expansion and differentiation.
View Article and Find Full Text PDFBiochim Biophys Acta
July 2015
UMR 8601 CNRS, University Paris Descartes, Paris Sorbonne Cité, 75270 Paris, France.. Electronic address:
Background: Cytochrome P450 2U1 (CYP2U1) has been identified from the human genome and is highly conserved in the living kingdom. In humans, it has been found to be predominantly expressed in the thymus and in the brain. CYP2U1 is considered as an "orphan" enzyme as few data are available on its physiological function(s) and active site topology.
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