BACKGROUND The study of platelet aggregation is essential to assess in vitro platelet function by different platelet activation pathways. OBJECTIVE To assess aggregation and biochemical parameters of random platelet concentrates produced at the Fundação HEMOAM using the quality control tests defined by law. METHODS Whole blood samples from 80 donors and the respective platelet concentrate u...

BACKGROUND Therapeutic storage of platelet concentrate is a challenging problem for Transfusion Medicine, so that many studies have been carried out with the aim of improving the duration of storage of platelet concentrates. Little attention, however, has been given to the most appropriate biochemical methods for evaluating the quality of the stored platelet concentrates. MATERIAL AND METHODS...

BACKGROUND Mesenchymal stem cells are promising candidates in regenerative cell therapy. Conventional culture methods involve the use of animal substances, specifically fetal bovine serum as growth supplement. Since the use of animal-derived products is undesirable for human applications, platelet lysates produced from human platelets are an attractive alternative. This is especially true if pl...

Preservation of platelet integrity and responsiveness was examined in platelet concentrates prepared in the presence of various formulations and combinations of plateletactivation inhibitors affecting intracellular levels of cyclic 3-5’ adenosine monophosphate (CAMP). Platelet concentrates were prepared and stored in an artificial medium for two weeks at 22’C. Markers of metabolic activity (pH,...

The use of autologous platelet concentrates, represent a promising and innovator tools in the medicine and dentistry today. The goal is to accelerate hard and soft tissue healing. Among them, the platelet-rich plasma (PRP) is the main alternative for use in liquid form (injectable). These injectable form of platelet concentrates are often used in regenerative procedures and demonstrate good res...