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Träfflista för sökning "WFRF:(Newby L. Kristin) ;pers:(Becker Richard C.)"

Sökning: WFRF:(Newby L. Kristin) > Becker Richard C.

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1.
  • Becker, Richard C., et al. (författare)
  • Effect of apixaban, an oral and direct factor Xa inhibitor, on coagulation activity biomarkers following acute coronary syndrome
  • 2010
  • Ingår i: Thrombosis and Haemostasis. - 0340-6245 .- 2567-689X. ; 104:5, s. 976-983
  • Tidskriftsartikel (refereegranskat)abstract
    • Apixaban is an oral, direct factor Xa inhibitor under development for secondary prevention in acute coronary syndrome (ACS) Apixaban's effect on D dimer and prothrombin fragment 12 (F1 2) (coagulation activity biomarkers) was determined in a randomised, double blinded, placebo controlled phase 2 study Patients (n=1,715) with either ST segment elevation or non ST segment elevation ACS received either placebo or apixaban 2 5 mg twice daily 10 mg once daily, 10 mg twice daily or 20 mg once daily for six months Samples were obtained at baseline (before study drug administration), week 3 and week 26 Apixaban plasma concentrations were measured directly by liquid chromatography/mass spectometry and anti Xa activity was determined using apixaban as a reference standard D dimer and F 1 2 were measured using ELISA based methods Most patients had elevated D dimer and Fl 2 levels at baseline Both coagulation activity biomarkers decreased by week 3 in all treatment groups but to a greater degree with apixaban than placebo (p<0 001) In a multivariable analysis, apixaban was independently associated with a change in biomarkers over time (p<0 0001) While the overall decrease did not differ significantly among the three highest apixaban doses, Fl 2 was suppressed more rapidly by the 10 mg once daily than the 2 5 mg twice daily dose (p<0 05) There was a strong and direct relationship between apixaban plasma concentrations and anti Xa apixaban levels, and an inverse relationship for both measures with coagulation activity biomarkers In conclusion the oral direct factor Xa inhibitor apixaban significantly reduced coagulation activity biomarkers among patients with ACS The 10 mg once daily dose reduced thrombin generation (F 1 2) and fibrin formation (D dimer) more rapidly and robustly than the 25 mg twice daily dose The effect on both D dimer and F 12 was apixaban concentration and factor Xa inhibition dependent durable and provided general guidance for dose selection in phase 3 investigation.
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2.
  • Lopes, Renato D., et al. (författare)
  • Highlights from the III International Symposium of Thrombosis and Anticoagulation (ISTA), October 14-16, 2010, Sao Paulo, Brazil
  • 2011
  • Ingår i: Journal of Thrombosis and Thrombolysis. - : Springer Science and Business Media LLC. - 0929-5305 .- 1573-742X. ; 32:2, s. 242-266
  • Tidskriftsartikel (refereegranskat)abstract
    • To discuss and share knowledge around advances in the care of patients with thrombotic disorders, the Third International Symposium of Thrombosis and Anticoagulation was held in So Paulo, Brazil, from October 14-16, 2010. This scientific program was developed by clinicians for clinicians, and was promoted by four major clinical research institutes: the Brazilian Clinical Research Institute, the Duke Clinical Research Institute of the Duke University School of Medicine, the Canadian VIGOUR Centre, and the Uppsala Clinical Research Center. Comprising 3 days of academic presentations and open discussion, the symposium had as its primary goal to educate, motivate, and inspire internists, cardiologists, hematologists, and other physicians by convening national and international visionaries, thought-leaders, and dedicated clinician-scientists. This paper summarizes the symposium proceedings.
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