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Comparative genetics of warfarin resistance
J Oldenburg1, C R Müller, S Rost
1Prof. Dr. Johannes Oldenburg, Institute of Experimental Haematology and Transfusion Medicine, University Clinic Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany, E-mail: johannes.oldenburg@ukb.uni-bonn.de, Tel. +49/(0)228/287 51 75, Fax +49/(0)228/287 51 76.
Warfarin resistance in rodents and humans is caused by mutations in the vitamin K 2,3-epoxide reductase complex subunit 1 (VKORC1) gene. This review details VKORC1 mutations, their genetic mechanisms, and differences between species.
Area of Science:
- Biochemistry
- Genetics
- Pharmacology
Background:
- Warfarin and 4-hydroxycoumarin anticoagulants target VKORC1.
- These drugs are used as rodenticides and human antithrombotics.
- High-dose warfarin use has led to rodent resistance via VKORC1 mutations.
Purpose of the Study:
- To review VKORC1 mutations causing warfarin resistance.
- To explore genetic mechanisms and compare human and rodent variants.
- To identify genomics databases as data sources.
Main Methods:
- Literature review of VKORC1 mutations.
- Analysis of mutation data from scientific literature and genomics databases.
- Comparative analysis of human and rodent VKORC1 variants.
Main Results:
- Rodents exhibit numerous VKORC1 missense mutations (mice: 6, rats: 12).
- Humans have 26 distinct VKORC1 mutations, occurring rarely.
- Human and rodent VKORC1 mutations differ characteristically.
Conclusions:
- VKORC1 mutations are a significant cause of warfarin resistance.
- Understanding these mutations is crucial for both pest control and human medicine.
- Genomics databases offer valuable insights into VKORC1 variants.
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