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  • Title: Abnormal prothrombin in the vitamin K-deficient rat.
    Author: Shah DV, Swanson JC, Suttie JW.
    Journal: Thromb Res; 1984 Aug 15; 35(4):451-8. PubMed ID: 6484892.
    Abstract:
    Vitamin K is required for the post-translational formation of gamma-carboxyglutamyl residues in the vitamin K-dependent plasma clotting factors. Interference with vitamin K action results in the appearance of undercarboxylated, "abnormal," forms of prothrombin in bovine and human plasma, but the extent of this response in the rat has been controversial. Development of amidolytic and immunochemical assays for rat prothrombin have now shown that plasma from vitamin K-deficient or Warfarin-treated rats contains a non-BaSO4 adsorbable (undercarboxylated) pool of prothrombin that is equivalent to between 5 and 10% of the normal plasma prothrombin concentration.
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