recurrent pregnancy loss is usually defined as the loss of two or more consecutive pregnancies before 20 weeks of gestation, which occurs in approximately 5% of reproductive-aged women. it has been suggested that women with thrombophilia have an increased risk of pregnancy loss and other adverse pregnancy outcomes. thrombophilia is an important predisposition to blood clot formation and is cons...

This article refers to:A new Co(II)-coordination polymer: prevention of postpartum hemorrhage by increasing the prothrombin activity

A gamma-carboxylation recognition site on the propeptide of the vitamin K-dependent blood coagulation proteins directs the carboxylation of glutamic acid residues by binding to the vitamin K-dependent carboxylase. To determine residues that define this site, we evaluated the effect of mutation of certain residues in the prothrombin propeptide on the extent of carboxylation. The prothrombin cDNA...

Recent work from this laboratory has been concerned with elucidating the function of the non-thrombin-forming half or propiece of prothrombin in the zymogen activation process. These studies have demonstrated that Fragment 1, the NH2-terminal region of the propiece (Fragment 1.2), is responsible for the Ca2+-mediated binding of prothrombin to phospholipid vesicles (1) and that Fragment 2, the C...

A comparison has been made of the electrophoretic behavior, chemical composition, amino-terminal sequence, and immunological properties of bovine prothrombin, factor IX (Christmas factor), and factor X (Stuart factor). Some immunological crossreactivity was found between the antibody to prothrombin and factor X although prothrombin and factor X differ substantially in amino-acid and carbohydrat...

The study here is to estimate the frequency of Prothrombin allelic polymorphisms from randomly selected general population. Prothrombin is a blood-clotting protein, a vitamin K-dependent clotting factor. The gene has a mutation at position 20210, hence the disorder being referred to as Prothrombin mutation 20210. The PT20210 polymorphisms were identified using simple PCR and followed by Restric...

The human prothrombin G20210A polymorphism located at the 3' cleavage site of the mRNA results in elevated plasma prothrombin levels and increased risk of venous thrombosis. This polymorphism has been shown to directly influence a variety of processes related to prothrombin mRNA metabolism. We have constructed plasmids that express the full-length prothrombin mRNA that is polyadenylated at its ...

Incubation of prothrombin on cultured human umbilical vein endothelial cells with factor Xa and calcium ions induced the activation of prothrombin. The mechanism of prothrombin activation was analyzed on sodium dodecyl sulfate gels using immuno- and amido-blotting techniques. It was demonstrated that meizothrombin was formed as an intermediate in prothrombin activation on the endothelial cell s...

Prothrombin is activated by activated Factor X f (Factor V and phospholipid) in the presence of diisopropylfluorophosphate which preferentially inhibits thrombin. Under these conditions a single activation fragment, designated Fragment 1.2, is released which represents the complete nonthrombin portion of the prothrombin molecule. The same fragment is seen as a transient species in the absence o...

BACKGROUND AND PURPOSE Although intracerebral hemorrhage is one of the most serious complications during oral anticoagulant therapy, there are no guidelines on emergency treatment with respect to reversal of anticoagulation effect in these patients. METHODS We retrospectively compared laboratory data and clinical features in 17 cases of anticoagulant-related intracerebral hemorrhage treated w...