Zobrazeno 1 - 10
of 48
pro vyhledávání: '"K L, Kunze"'
Autor:
P. L. S. Uson, K. L. Kunze, M. A. Golafshar, G. Botrus, D. Riegert-Johnson, L. Boardman, M. J. Borad, D. Ahn, M. B. Sonbol, A. Kahn, M. Klint, E. D. Esplin, R. L. Nussbaum, A. K. Stewart, T. Bekaii-Saab, N. J. Samadder
Publikováno v:
Digestive Diseases and Sciences. 67:5107-5115
To determine prevalence and clinical utility of pathogenic germline variants (PGV) in gastric and esophageal cancer patients using universal genetic testing approach.We undertook a prospective study of germline sequencing using an 80 gene next-genera
Publikováno v:
Pharmaceutical research. 17(3)
The intestinal metabolism of some CYP3A substrates can be altered profoundly by co-administration of the potent inhibitor, ketoconazole. The present research was conducted to test the hypothesis that, unlike the inhibition kinetics observed with isol
Publikováno v:
Drug metabolism and disposition: the biological fate of chemicals. 27(5)
The purpose of this work was to evaluate the effect of mutual unbound inhibitor and unbound enzyme depletion on the potency of three antifungal cytochrome P-450 (CYP)3A inhibitors with over 1000-fold range in enzyme affinity. Incubations were perform
Publikováno v:
The Journal of pharmacology and experimental therapeutics. 289(2)
It has been suggested that the binding of a drug to plasma proteins will influence the intestinal extraction efficiency when drug is delivered to the mucosal epithelium via either the gut lumen or vasculature. We evaluated this hypothesis using cytoc
Autor:
J M, Fisher, S A, Wrighton, P B, Watkins, P, Schmiedlin-Ren, J C, Calamia, D D, Shen, K L, Kunze, K E, Thummel
Publikováno v:
The Journal of pharmacology and experimental therapeutics. 289(2)
Cytochrome P-450 (CYP) 3A4 accounts for approximately 50% of all P-450s found in the small intestine (Paine et al., 1997) and contributes to the extensive and variable first-pass extraction of drugs such as cyclosporine and saquinavir. We recently de
Publikováno v:
Drug metabolism and disposition: the biological fate of chemicals. 27(2)
The purpose of this study was to compare the kinetics of intestinal and hepatic cytochrome P-450 3A (CYP3A) inhibition by using microsomal midazolam 1'-hydroxylation as a marker of enzyme activity. The effect of two antifungal agents commonly implica
Publikováno v:
Anesthesiology. 87(1)
There is considerable unexplained variability in alfentanil pharmacokinetics, particularly systemic clearance. Alfentanil is extensively metabolized in vivo, and thus systemic clearance depends on hepatic biotransformation. Cytochrome P450 3A4 was pr
Publikováno v:
Drug metabolism and disposition: the biological fate of chemicals. 24(5)
Kinetic studies demonstrate that two forms of human liver cytochrome P450 are responsible for the formation of (R)-8-hydroxywarfarin: a low-affinity enzyme (KM approximately 1.5 mM), previously identified as P4501A2; and a high-affinity enzyme (KM =
Autor:
D J, Black, K L, Kunze, L C, Wienkers, B E, Gidal, T L, Seaton, N D, McDonnell, J S, Evans, J E, Bauwens, W F, Trager
Publikováno v:
Drug metabolism and disposition: the biological fate of chemicals. 24(4)
Consistent with expectations based on human in vitro microsomal experiments, administration of fluconazole (400 mg/day) for 6 days to six human volunteers significantly reduced the cytochrome P450 (P450)-dependent metabolic clearance of the warfarin
Publikováno v:
Drug metabolism and disposition: the biological fate of chemicals. 24(4)
The antifungal agent fluconazole was found to be a potent inhibitor of cytochrome P450 (P450) 2C9 (Ki = 7-8 microM), the principal enzyme responsible for the clearance (85%) of the more potent anticoagulant (S)-warfarin to the inactive (S)-7- and (S)