نتایج جستجو برای: warfarin dose requirements

تعداد نتایج: 518675  

Introduction: Using artificial intelligence tools in pharmacogenomics is one of the latest bioinformatics research fields. One of the most important drugs that determining its initial therapeutic dose is difficult is the anticoagulant warfarin. Warfarin is an oral anticoagulant that, due to its narrow therapeutic window and complex interrelationships of individual factors, the selection of its ...

Journal: :Lancet 1999
G P Aithal C P Day P J Kesteven A K Daly

BACKGROUND The cytochrome P450 CYP2C9 is responsible for the metabolism of S-warfarin. Two known allelic variants CYP2C9*2 and CYP2C9*3 differ from the wild type CYP2C9*1 by a single aminoacid substitution in each case. The allelic variants are associated with impaired hydroxylation of S-warfarin in in-vitro expression systems. We have studied the effect of CYP2C9 polymorphism on the in-vivo wa...

Journal: :Clinical pharmacology and therapeutics 2008
M-S Wen Mtm Lee J-J Chen H-P Chuang L-S Lu C-H Chen T-H Lee C-T Kuo F-M Sun Y-J Chang P-L Kuan Y-F Chen M-J Charng C-Y Ray J-Y Wu Y-T Chen

Polymorphisms in CYP2C9 and VKORC1 have been shown to be associated with warfarin dose requirements and could be used to predict warfarin dose. We conducted a prospective study in which warfarin dose was prescribed based on CYP2C9 and VKORC1 polymorphisms in 108 Han-Chinese patients without prior warfarin treatments. Using the genotype-based dosing, 83% of patients reached stable, therapeutic i...

Journal: :Acta Cardiologica Sinica 2013
Ming-Shien Wen Ming Ta Michael Lee

UNLABELLED Warfarin was first introduced in the 1950s and quickly became the most commonly used oral anticoagulant for the prevention of thromboembolism in patients with deep vein thrombosis, atrial fibrillation, or prosthetic heart valve replacement. Warfarin is highly effective in treating these diseases; however, several factors prevent it from even wider use, especially in Asian populations...

Introduction: Using artificial intelligence tools in pharmacogenomics is one of the latest bioinformatics research fields. One of the most important drugs that determining its initial therapeutic dose is difficult is the anticoagulant warfarin. Warfarin is an oral anticoagulant that, due to its narrow therapeutic window and complex interrelationships of individual factors, the selection of its ...

2014
Anna-Karin Hamberg Mia Wadelius Lena E Friberg Tina T Biss Farhad Kamali E Niclas Jonsson

AIMS Although genetic, clinical and demographic factors have been shown to explain approximately half of the inter-individual variability in warfarin dose requirement in adults, less is known about causes of dose variability in children. This study aimed to identify and quantify major genetic, clinical and demographic sources of warfarin dose variability in children using modelling and simulati...

2017
Karla Claudio-Campos Aurora Labastida Alga Ramos Andrea Gaedigk Jessicca Renta-Torres Dariana Padilla Giselle Rivera-Miranda Stuart A. Scott Gualberto Ruaño Carmen L. Cadilla Jorge Duconge-Soler

Existing algorithms account for ~50% of observed variance in warfarin dose requirements after including common polymorphisms. However, they do not perform as well in populations other than Caucasians, in part because some ethno-specific genetic variants are overlooked. The objective of the present study was to identify genetic polymorphisms that can explain variability in warfarin dose requirem...

Journal: :Hawai'i journal of medicine & public health : a journal of Asia Pacific Medicine & Public Health 2014
Sydney Y Tatsuno Eric M Tatsuno

Warfarin is the most common anticoagulant prescribed and its metabolism has been linked to two specific genes, CYP2C9 and VKORC1. This study analyzed 113 patients from 4 different ethnic backgrounds (Asian, Native Hawaiian, Portuguese, and Caucasian) and investigated the association between the mean daily dose of warfarin and ethnicity. Caucasian patients required the highest mean daily dose of...

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