نتایج جستجو برای: coagulation activity

تعداد نتایج: 1175523  

Journal: :Peritoneal dialysis international : journal of the International Society for Peritoneal Dialysis 2005
Farhan Bazargani Ann Albrektsson Noushin Yahyapour Magnus Braide

OBJECTIVES Clinical studies have demonstrated that the intraperitoneal (IP) complement and coagulation systems are activated in peritoneal dialysis (PD) patients. In animal models, low molecular weight heparin (LMWH) was seen to inhibit peritoneal angiogenesis, and related compounds have increased ultrafiltration volumes after repeated administration to PD patients. The present study evaluated ...

A ANSARI, H TOWFIGHI, H ZOLFAGHARIAN, S KHATAMI, Z ZAMANI,

Snake venoms contain a rich variety of factors which affect blood coagulation. There have been few reports on the anticoagulant activity of the venom of different cobras, but no such observations have been made on the Iranian cobra, although a procoagulant factor has been described. In this study an anticoagulant factor has been purified from the venom of Naja naja oxiana using gel filtrat...

Journal: :Cancer research 2003
Todd A Hembrough Glenn M Swartz Adonia Papathanassiu George P Vlasuk William E Rote Shawn J Green Victor S Pribluda

An association between cancer and thrombosis has been recognized for more than a century. However, the manner by which tumor growth is regulated by coagulation in vivo remains unclear. To assess the role of coagulation on tumor growth, in vivo, we tested coagulation inhibitors specific for either tissue factor (TF)/factor VIIa (fVIIa) complexes or factor Xa (fXa) for antitumor activity. Here, w...

2011
Derek Tilley Irina Levit John A Samis

BACKGROUND Factor V (FV) in its activated form, FVa, is a critical regulator of thrombin generation during fibrin clot formation. There is a need of a simple, fast, and inexpensive microplate-based coagulation assay to measure the functional activity of FV in human plasma. The objective of this study was to develop a microplate-based assay that measures FV coagulation activity during clot forma...

Journal: :Circulation 2004
Marcel Levi Tom van der Poll Harry R Büller

Inflammation and coagulation play pivotal roles in the pathogenesis of vascular disease. Increasing evidence points to extensive cross-talk between these two systems, whereby inflammation leads not only to activation of coagulation, but coagulation also considerably affects inflammatory activity. Activation of coagulation and fibrin deposition as a consequence of inflammation is well known and ...

Journal: :The Tohoku journal of experimental medicine 1986
H Takahashi M Hanano S Hayashi Y Arai N Yoshino E Takakuwa W Tatewaki R Nagayama S Takizawa A Shibata

Plasma levels of protein C (PC) and vitamin K-dependent coagulation factors (factors II, VII, IX and X) were measured in 100 specimens from patients on long-term warfarin therapy. Both activities and antigens of these coagulation factors were decreased, depending on the thrombotest values. Factor II activity/antigen ratio and factor X activity/antigen ratio were correlated well with thrombotest...

Journal: :Neonatology 2012
Christine Poralla Hans-Jörg Hertfelder Johannes Oldenburg Andreas Müller Peter Bartmann Axel Heep

BACKGROUND Pathogenesis of intraventricular hemorrhage (IVH) in premature infants is multifactorial. Little is known about the influence of pro-inflammatory cytokine activation on the coagulation system in extremely preterm infants and its impact on the development of IVH. OBJECTIVE To determine the interaction between serum interleukin-6 (IL-6) and the coagulation system in preterm infants p...

Journal: :Journal of Korean Medical Science 1986
M. Lee S. Park J. S. Han Y. Y. Lee H. Y. Lee K. C. Kye B. K. Kim J. S. Lee

Twenty male patients with Korean hemorrhagic fever were evaluated with thrombelastography (TEG) to assess the changes in coagulation system, and the results were compared with those of conventional coagulation tests. Procoagulant activity in the plasma was determined by comparing the reaction time "r" of the normal plasma and that of the mixture of equal parts of the normal plasma and the patie...

2002
Pier Mannuccio Mannucci Raffaella Coppola Thomas Keller Helmut Ostermann Jochen Kienast

Septic shock and multiple organ failure may be associated with coagulation activation, disseminated fibrin formation, and consumption of coagulation inhibitors such as antithrombin 111. We have evaluated prospectively coagulation measurements in patients with severe chemotherapy-induced neutropenia. This group of patients was chosen because of their high risk of developing severe septic cornpli...

Journal: :Toxicon : official journal of the International Society on Toxinology 1991
L Y Yukelson G Tans M C Thomassen H C Hemker J Rosing

The venoms from central Asian snakes (Echis carinatus, Echis multisquamatus, Vipera ursini, Vipera lebetina, Agkistrodon halys halys and Naja naja oxiana) contain several enzymes with amidolytic- and procoagulant activity. We have characterized the activities and the mol. wts of the venom enzymes that are able to convert a number of commercially available chromogenic substrates for activated co...

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