| pubmed-article:11204592 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:11204592 | lifeskim:mentions | umls-concept:C0205245 | lld:lifeskim |
| pubmed-article:11204592 | lifeskim:mentions | umls-concept:C0015498 | lld:lifeskim |
| pubmed-article:11204592 | lifeskim:mentions | umls-concept:C0015501 | lld:lifeskim |
| pubmed-article:11204592 | lifeskim:mentions | umls-concept:C2700640 | lld:lifeskim |
| pubmed-article:11204592 | lifeskim:mentions | umls-concept:C0871161 | lld:lifeskim |
| pubmed-article:11204592 | pubmed:issue | 1 | lld:pubmed |
| pubmed-article:11204592 | pubmed:dateCreated | 2001-2-1 | lld:pubmed |
| pubmed-article:11204592 | pubmed:abstractText | Carriership of the factor V (FV) gene marked by the R2-haplotype, a series of linked polymorphisms encoding several amino acid changes in FV, is associated with mild resistance to activated protein C (APC) and with an increased risk of thrombosis. We compared the functional properties of normal FV(a) and R2-FV(a) in model systems and in plasma. FV and R2-FV were equally well activated by thrombin and expressed identical cofactor activities in prothrombin activation. Rate constants of APC-catalyzed inactivation of FVa and R2-FVa were similar both with and without protein S. However, significant differences were observed between haemostatic parameters determined in plasma from homozygous carriers of the R2-gene (n = 5) and age-matched non-carriers (n = 19). Plasma from R2-carriers contained significantly lower FV levels and the ratio of the two FV isoforms (FV1 and FV2) was shifted in favor of FV1. The FV2/FV1 ratio was 1.4 (95% CI = 1.3-1.5) in homozygous carriers of R2 and 2.8 (95% CI = 2.5-3.1) in controls (p < 0.00001). In an APC resistance test which quantifies the cofactor activity of FV in APC-catalyzed FVIII(a) inactivation, homozygous R2-carriers had significantly lower (p < 0.00001) APC sensitivity ratios (APCsr = 1.54, 95% CI = 1.48-1.60) than controls (APCsr = 2.17, 95% CI = 2.05-2.28). This indicates that R2-FV has reduced cofactor activity in APC-catalyzed FVIII(a) inactivation. The changes of the relative amounts of FV1 and FV2 in carriers of the R2-gene will result in increased thrombin formation in the presence of APC and may provide a mechanistic explanation for the increased thrombotic risk associated with the R2-haplotype. | lld:pubmed |
| pubmed-article:11204592 | pubmed:language | eng | lld:pubmed |
| pubmed-article:11204592 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11204592 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:11204592 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11204592 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11204592 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11204592 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11204592 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11204592 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11204592 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:11204592 | pubmed:month | Jan | lld:pubmed |
| pubmed-article:11204592 | pubmed:issn | 0340-6245 | lld:pubmed |
| pubmed-article:11204592 | pubmed:author | pubmed-author:BernardiFF | lld:pubmed |
| pubmed-article:11204592 | pubmed:author | pubmed-author:RosingJJ | lld:pubmed |
| pubmed-article:11204592 | pubmed:author | pubmed-author:TangSS | lld:pubmed |
| pubmed-article:11204592 | pubmed:author | pubmed-author:GirelliDD | lld:pubmed |
| pubmed-article:11204592 | pubmed:author | pubmed-author:GemmatiDD | lld:pubmed |
| pubmed-article:11204592 | pubmed:author | pubmed-author:HoekemaLL | lld:pubmed |
| pubmed-article:11204592 | pubmed:author | pubmed-author:CastoldiEE | lld:pubmed |
| pubmed-article:11204592 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:11204592 | pubmed:volume | 85 | lld:pubmed |
| pubmed-article:11204592 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:11204592 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:11204592 | pubmed:pagination | 75-81 | lld:pubmed |
| pubmed-article:11204592 | pubmed:dateRevised | 2006-11-15 | lld:pubmed |
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| pubmed-article:11204592 | pubmed:meshHeading | pubmed-meshheading:11204592... | lld:pubmed |
| pubmed-article:11204592 | pubmed:year | 2001 | lld:pubmed |
| pubmed-article:11204592 | pubmed:articleTitle | Functional properties of factor V and factor Va encoded by the R2-gene. | lld:pubmed |
| pubmed-article:11204592 | pubmed:affiliation | Department of Biochemistry, Cardiovascular Research Institute, Maastricht, Maastricht University, The Netherlands. | lld:pubmed |
| pubmed-article:11204592 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:11204592 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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