Objective(s): Echis carinatus is one of the venomous snakes in Iran. The venom of Iranian Echis carinatus is a rich source of protein with various factors affecting the plasma protein and blood coagulation factor. Some of these proteins exhibit types of enzymatic activities. However, other items are proteins with no enzymatic activity.   Materials and Methods: In order to study the mechanism ...

background: acetaminophen (n-acetyl-p aminophenol; apap) is one of the most common types of analgesics. it is also the most common xneobitic reported to poison centers. this study investigates if therapeutic doses of nac can falsely increase coagulation tests, prothrombin time (pt) and bleeding time (bt). ​​ methods: thirty-six apap poisoned patients whose acetaminophen serum concentration were...

novel citric acid modified starch-carboxy methyl cellulose (cmc) -montmorillonite (mmt) bionanocomposite films were prepared by casting method and the effect of mmt on the structural and physical properties of the starch-cmc biocomposites was studied. x-ray diffraction test showed thatstrong polar interactions between the hydroxyl groups present in the starch and cmc chains and in the silicate ...

To study the specific role of gamma-carboxyglutamic acid (Gla) residues in prothrombin, we have isolated a series of partially carboxylated prothrombin variants from a patient with a hereditary defect in vitamin K-dependent carboxylation (Goldsmith, G. H., Pence, R. E., Ratnoff, O. D., Adelstein, D. A., and Furie, B. (1982) J. Clin. Invest. 69, 1253-1260). The three variant prothrombins, purifi...

The 25,000 Af, fragment obtained by thrombin digestion of normal prothrombin has been further compared with the corresponding fragment from dicoumarol-induced prothrombin. In contrast with the fragment from normal prothrombin, the one from dicoumarol-induced prothrombin does not bind calcium (STENFLO, J. (1973) /. Biol. Chem. 248, 6325). After cyanogen bromide degradation of this material, a fr...

A patient developed bleeding due to an acute acquired specific prothrombin deficiency. Unlike previously described patients, this patient had no evidence of an associated lupus anticoagulant. Prothrombin activity and antigen were decreased concordantly and the patient's plasma did not neutralize the activity of added prothrombin or interfere with its measurement by electroimmunoassay. Neverthel...

The investigators have evaluated the frequency and manifestations of anti-prothrombin antibodies in patients with the lupus anticoagulant. Thirty-one of 42 patients with lupus anticoagulants associated with a variety of underlying conditions (74%) had evidence on crossed immunoelectrophoresis of anti-prothrombin antibodies. Twenty-four of 25 patients with an activated partial thromboplastin tim...

The aim of this study was to investigate co-expression of des-γ-carboxy prothrombin (DCP) and c-Met in hepatocellular carcinoma (HCC) and its significance in predicting tumor recurrence after surgical resection. Immunohistochemical techniques were used to examine DCP and c-Met expression in HCC samples collected from 153 patients. DCP and c-Met staining were observed in tumor areas in 63.4% (97...

Recombinant human prothrombin (r-prothrombin) and recombinant mutant prothrombin with active site Asp419 substituted by Asn (D419N-prothrombin) were expressed in recombinant CHO cells, isolated and purified from the fermentation supernatant. The r-Prothrombin and D419N-prothrombin were digested by both Echis carinatus venom and Oxyuranus scutellatus venom. Prior to, during and after activation,...