نتایج جستجو برای: cyp1a2

تعداد نتایج: 1781  

Objective(s): In this study, we aimed to evaluate the effect of salidroside on the activities of the different drug-metabolizing enzymes CYP1A2, CYP2B6, CYP2C9, CYP2D6 and CYP3A4 in rats, in which a specific probe drug was used for each enzyme. Materials and Methods: After pretreatment with salidroside, five probe drugs were simultaneously administered to rats by gavage. The given dose was 2.0 ...

2010

Pregnancy results in increased CYP3Aand CYP2D6-mediated clearance but decreases the clearance of CYP1A2 probe drugs. The aim of this study was to determine whether the decreased CYP1A2 activity during human pregnancy could be explained by decreased expression of CYP1A2 protein and mRNA using the rat as a model. Potential mechanisms leading to decreased CYP1A2 activity and expression were also i...

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2011
Alysa A Walker Leslie Dickmann Nina Isoherranen

Pregnancy results in increased CYP3A- and CYP2D6-mediated clearance but decreases the clearance of CYP1A2 probe drugs. The aim of this study was to determine whether the decreased CYP1A2 activity during human pregnancy could be explained by decreased expression of CYP1A2 protein and mRNA using the rat as a model. Potential mechanisms leading to decreased CYP1A2 activity and expression were also...

Objective(s): In this study, a cocktail of probe drugs was used to assess whether lentinan could influence the activities of rat enzymes CYP3A4, CYP2D6, CYP1A2, CYP2C19, and CYP2C9 in vivo. Materials and Methods: Fourteen days after intraperitoneal injection of lentinan, rats were given an oral dose of a cocktail solution containing phenacetin, tolbutamide, omeprazole, metoprolol, and midazolam...

2010

Pregnancy results in increased CYP3Aand CYP2D6-mediated clearance but decreases the clearance of CYP1A2 probe drugs. The aim of this study was to determine whether the decreased CYP1A2 activity during human pregnancy could be explained by decreased expression of CYP1A2 protein and mRNA using the rat as a model. Potential mechanisms leading to decreased CYP1A2 activity and expression were also i...

2010

Pregnancy results in increased CYP3Aand CYP2D6-mediated clearance but decreases the clearance of CYP1A2 probe drugs. The aim of this study was to determine whether the decreased CYP1A2 activity during human pregnancy could be explained by decreased expression of CYP1A2 protein and mRNA using the rat as a model. Potential mechanisms leading to decreased CYP1A2 activity and expression were also i...

Journal: :Human molecular genetics 2012
Idris Guessous Maria Dobrinas Zoltán Kutalik Menno Pruijm Georg Ehret Marc Maillard Sven Bergmann Jacques S Beckmann Daniele Cusi Federica Rizzi Franco Cappuccio Jacques Cornuz Fred Paccaud Vincent Mooser Jean-Michel Gaspoz Gérard Waeber Michel Burnier Peter Vollenweider Chin B Eap Murielle Bochud

The 15q24.1 locus, including CYP1A2, is associated with blood pressure (BP). The CYP1A2 rs762551 C allele is associated with lower CYP1A2 enzyme activity. CYP1A2 metabolizes caffeine and is induced by smoking. The association of caffeine consumption with hypertension remains controversial. We explored the effects of CYP1A2 variants and CYP1A2 enzyme activity on BP, focusing on caffeine as the p...

Journal: :Toxicological sciences : an official journal of the Society of Toxicology 2005
D F Staskal J J Diliberto M J Devito L S Birnbaum

Dioxins have been shown to bind and induce rodent CYP1A2, producing a dose-dependent hepatic sequestration in vivo. The induction of CYP1A2 activity has been used as a noninvasive biomarker for human exposure to dioxins; while there is a consistent relationship between exposure and hepatic CYP1A2 induction in rodents, this relationship has only been observed in some of the highest exposed human...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پزشکی 1390

استامینوفن پرمصرف ترین داروی ضد درد وضد تب است که در کشور های مختلف مورد استفاده قرار می گیرد. در برخی از فورمولاسیون ها،استامینوفن به همراه اپیوئیدها(مخدرها)مثل کدئین،برای درمان درد های شدید تر استفاده می شود. بنابراین در بسیاری از موارد، مصرف زیاد و طولانی مدت این دارو،علت عمده ایجاد اسیب های شدید کبدی وکلیوی است.آسیب سلولی ناشی از مصرف این دارو با تبدیل به متابولیت ان-استیل پارا بنزو کوئینون...

2017
Mohammad M Al-Ahmad Naheed Amir Subramanian Dhanasekaran Anne John Yousef M Abdulrazzaq Bassam R Ali Salim M A Bastaki

Cytochrome P450 1A2 (CYP1A2) is one of the CYP450 mixed-function oxidase system that is of clinical importance due to the large number of drug interactions associated with its induction and inhibition. In addition, significant inter-individual differences in the elimination of drugs metabolized by CYP1A2 enzyme have been observed which are largely due to the highly polymorphic nature of CYP1A2 ...

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