infection with human immunodeficiency virus (hiv) is a progressive condition which may cause endothelial dysfunction and liver damage leading to coagulopathy. with adventure of highly active antiretroviral therapy (haart), life expectancy has prolonged in hiv positive patients but several acquired immunodeficiency syndrome (aids)-related conditions such as coagulopathies are responsible for ass...

We developed a new product called titanium-prepared platelet-rich fibrin (T-PRF). The T-PRF method is based on the hypothesis that titanium may be more effective in activating platelets than the silica activators used with glass tubes in Chouckroun's leukocyte- and platelet-rich fibrin (L-PRF) method. In this study, we aimed to define the structural characteristics of T-PRF and compare it with ...

BACKGROUND Patients experiencing massive haemorrhage are at high risk of developing coagulopathy through loss, consumption, and dilution of coagulation factors and platelets. It has been reported that plasma fibrinogen concentrations may reach a critical low level relatively early during bleeding, calling for replacement fibrinogen therapy. Cryoprecipitate has been widely used in the past, but ...

A series of indole-based aryl(aroyl)hydrazone analogs of antiplatelet indole-3-carboxaldehyde phenylhydrazone were synthesized by the Schiff base formation reaction and their antiplatelet activity was assessed using human platelet rich plasma. The platelet concentrate was obtained using a two-step centrifugation protocol and ADP, arachidonic acid and collagen were used as inducers of platelet a...

In a series of important studies Murphy and his colleagues demonstrated that the preparation and storage of platelet-rich plasma and platelet concentrates at 22°C rather than 4°C improved their life span in vivo (Murphy and Gardner, 1969; Murphy, Sayar, and Gardner, 1970). The potential clinical relevance of this finding has been confirmed by Handin and Valeri (1971), and it is likely that this...

Washed human platelets in buffers containing either 2 mM Ca++ or 4 mM EDTA were stimulated by human alpha-thrombin to induce secretion. The binding of two endogenous secreted proteins, factor-VIII-related protein (VIII-R) (von Willebrand factor) and platelet factor 4, was measured by reacting thrombin-treated and control platelets with specific antibodies to these proteins, then quantifying ant...