The effect of dietary vitamin K intake on warfarin sensitivity is known only from case reports and few small clinical studies. We followed 50 patients commencing warfarin and consuming their regular diets (for 8 weeks) to study this relationship. A one-week recall dietary questionnaire was completed at weeks 2 and 8. Daily intake of nutrients and vitamin K was calculated from standard tables. W...

We conducted a meta-analysis to investigate the influence of two common single nucleotide polymorphisms (SNPs) (rs2292566 G>A and rs4653436 A>G) in the EPHX1 gene on warfarin maintenance dosages. Relevant literatures were searched using the PubMed, Embase, Web of Science, Cochrane Library, CISCOM, CINAHL, Google Scholar, CBM, and CNKI databases without any language restrictions. STATA Version 1...

Objective: To evaluate the impact of pharmacist-led warfarin management and standardized treatment protocol. Methods: A retrospective cohort study was carried out in a cardiology referral hospital located in central Kuala Lumpur, Malaysia, from 2009 to 2014. The inclusion criteria were: adult patients who were diagnosed and treated for atrial fibrillation (AF) with warfarin, attended the warfar...

Pharmacogenomics (PGx) guided warfarin dosing, using a comprehensive dosing algorithm, is expected to improve dose optimisation and lower the risk of adverse drug reactions. As a complementary tool, a simple genotype-dosing table, such as in the US Food and Drug Administration (FDA) Coumadin drug label, may be utilised for general risk assessment of likely over- or under-anticoagulation on a st...

Rifampicin induces multiple detoxification pathways, including those mediated by enzymes of the cytochrome P450 (CYP) family such as CYP2C9 and CYP3A4 [1], and is a known perpetrator of metabolic drug-drug interactions (mDDIs). Warfarin is a narrow therapeutic index anti-coagulant drug that is primarily cleared via CYP-mediated metabolism, and as such is a plausible victim of mDDIs with clinica...

OBJECTIVES We sought to compare the tolerability and safety of three fixed doses of ximelagatran versus warfarin in patients with nonvalvular atrial fibrillation (NVAF). BACKGROUND Anticoagulants such as warfarin lower the risk of stroke in patients with NVAF. Ximelagatran is a novel, oral direct thrombin inhibitor with predictable pharmacokinetics and no known food or pharmacokinetic drug in...

Warfarin is a widely used anticoagulant with a narrow therapeutic index and large interpatient variability in the dose required to achieve target anticoagulation. Common genetic variants in the cytochrome P450-2C9 (CYP2C9) and vitamin K-epoxide reductase complex (VKORC1) enzymes, in addition to known nongenetic factors, account for ~50% of warfarin dose variability. The purpose of this article ...

AIMS We investigated associations between genetic variation in candidate genes and on a genome-wide scale with warfarin maintenance dose, time in therapeutic range (TTR), and risk of major bleeding. MATERIALS & METHODS In total, 982 warfarin-treated patients from the RE-LY trial were studied. RESULTS After adjusting for SNPs in VKORC1 and CYP2C9, SNPs in DDHD1 (rs17126068) and NEDD4 (rs2288...

❚ Received: April 5, 2016 Accepted: June 21, 2016 ❚ Correspondence: Graziamaria Corbi, Department of Medicine and Health Sciences, University of Molise, via De Santis snc, 86100 Campobasso, Italy Tel. +39 087 4404771 Fax +39 087 4404728 E-mail: [email protected] Introduction. Cardiovascular diseases are very prevalent in the elderly population and characterized by high complexity, poo...