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Warfarin dose relat...
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Kohnke, HugoUppsala universitet,Klinisk farmakologi
(författare)
Warfarin dose related to apolipoprotein E (APOE) genotype
- Artikel/kapitelEngelska2005
Förlag, utgivningsår, omfång ...
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2005-06-11
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Springer Science and Business Media LLC,2005
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-74345
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-74345URI
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https://doi.org/10.1007/s00228-005-0936-3DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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OBJECTIVE: Warfarin is an anticoagulant which acts through interference with the recycling of vitamin K in the liver, leading to reduced activation of several clotting factors. Apolipoprotein E plays a central role in the uptake of the lipid-soluble vitamin K. The apolipoprotein E (APOE) alleles E2, E3 and E4 encode the three major isoforms of apolipoprotein E. The aim of this project was to evaluate whether variation in the APOE gene influences warfarin dose.METHODS: We genotyped APOE in 183 warfarin-treated patients. Information about warfarin dose, prothrombin time, age, gender, body weight, treatment indication and duration, other diseases and concurrent medication was taken from the patients' medical records. Cytochrome P(450) 2C9 genotyping had been performed previously, and patients were stratified according to CYP2C9 genotype.RESULTS: Patients homozygous for APOE*E4 tended to receive higher warfarin doses than others. Among CYP2C9 extensive metabolisers, APOE*E4 homozygous patients received significantly higher warfarin doses than patients with one or no E4 alleles; 56.9 compared with 34.3 and 34.6 mg/week, (Bonferroni corrected P=0.008 and 0.007, respectively). APOE genotype explains 6% of warfarin dose variance among CYP2C9 extensive metabolisers (analysis of variance, P=0.009).CONCLUSION: Previous studies have shown that individuals carrying the APOE*E4 allele have a faster uptake of lipoproteins into the liver and lower levels of circulating vitamin K than others. It is therefore plausible that patients carrying E4 alleles have an enhanced uptake of vitamin K into the liver and require higher doses of warfarin to compensate for this.
Ämnesord och genrebeteckningar
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APOE
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warfarin
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pharmacogenetics
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MEDICINE
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MEDICIN
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Sörlin, KristinaUppsala universitet,Klinisk farmakologi
(författare)
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Granath, Göran
(författare)
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Wadelius, MiaUppsala universitet,Klinisk farmakogenomik och osteoporos(Swepub:uu)miawadel
(författare)
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Uppsala universitetKlinisk farmakologi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:European Journal of Clinical Pharmacology: Springer Science and Business Media LLC61:5-6, s. 381-80031-69701432-1041
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