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已发表论文
CYP2C9 和 VKORC1 基因多态性与中国人群对华法林 (warfarin) 的敏感性相关
Authors Jia LQ, Wang Z, Men J, Cai H, Wei M
Received 14 December 2016
Accepted for publication 27 February 2017
Published 31 March 2017 Volume 2017:13 Pages 421—425
DOI https://doi.org/10.2147/TCRM.S130198
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Hoa Le
Peer reviewer comments 4
Editor who approved publication: Professor Deyun Wang
Objective: Warfarin is a
commonly prescribed anticoagulant for prevention of thromboembolic events. Wide
inter-individual dose variation, narrow therapeutic range and risk of serious
bleeding result in difficulties in achieving the therapeutic effect. The
present study was designed to clarify the real biological significance of the
polymorphisms of VKORC1 and cytochrome P450 2C9 (CYP2C9) in warfarin
metabolism.
Methods: A total of 214 patients with warfarin anticoagulant therapy were selected. During follow-up of anticoagulation, warfarin dosage and associated international normalized ratio values were recorded. Genetic polymorphisms of VKORC1 promoter and from exon 1 to exon 3 and CYP2C9 exon 4 sequence were detected by polymerase chain reaction and gene sequencing.
Results: Five polymorphisms were identified in this research, which were VKORC1 1173C>T (intron 1), 1542G>C (intron 2), 2255C>T (intron 2), 3730C>T (3'-downstream) and CYP2C9 exon 4 −65G>C. VKORC1 1173CT, 1542GC, 2255CT and 3730CT polymorphisms were detected in same patients, but CYP2C9 exon 4 −65GC carriers were different from them. VKORC1 1173CT, 1542GC, 2255CT, 3730CT carriers and CYP2C9 exon 4 −65GC carriers had significantly higher warfarin daily dosage than others (3.2±0.6 vs 3.1±1.1 vs 2.6±0.8 mg/day). Logistic regression analysis revealed VKORC1 1173CT, 1542GC, 2255CT, 3730CT carrier status (odds ratio [OR] =3.233, 95% confidence interval [CI]: 1.259–8.303, P =0.015) and obesity with body mass index >27 kg/m2 (OR =1.223, 95% CI: 1.097–1.363, P <0.001) to have independent and statistically significant contributions to high warfarin dosage.
Conclusion: In general, in VKORC1 1173CT, 1542GC, 2255CT and 3730CT carriers and in obese patients, warfarin maintenance doses were significantly higher than in the others.
Keywords: warfarin, vitamin K, cytochrome P450, polymorphism
Methods: A total of 214 patients with warfarin anticoagulant therapy were selected. During follow-up of anticoagulation, warfarin dosage and associated international normalized ratio values were recorded. Genetic polymorphisms of VKORC1 promoter and from exon 1 to exon 3 and CYP2C9 exon 4 sequence were detected by polymerase chain reaction and gene sequencing.
Results: Five polymorphisms were identified in this research, which were VKORC1 1173C>T (intron 1), 1542G>C (intron 2), 2255C>T (intron 2), 3730C>T (3'-downstream) and CYP2C9 exon 4 −65G>C. VKORC1 1173CT, 1542GC, 2255CT and 3730CT polymorphisms were detected in same patients, but CYP2C9 exon 4 −65GC carriers were different from them. VKORC1 1173CT, 1542GC, 2255CT, 3730CT carriers and CYP2C9 exon 4 −65GC carriers had significantly higher warfarin daily dosage than others (3.2±0.6 vs 3.1±1.1 vs 2.6±0.8 mg/day). Logistic regression analysis revealed VKORC1 1173CT, 1542GC, 2255CT, 3730CT carrier status (odds ratio [OR] =3.233, 95% confidence interval [CI]: 1.259–8.303, P =0.015) and obesity with body mass index >27 kg/m2 (OR =1.223, 95% CI: 1.097–1.363, P <0.001) to have independent and statistically significant contributions to high warfarin dosage.
Conclusion: In general, in VKORC1 1173CT, 1542GC, 2255CT and 3730CT carriers and in obese patients, warfarin maintenance doses were significantly higher than in the others.
Keywords: warfarin, vitamin K, cytochrome P450, polymorphism
