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Optimal Concentration of Thrombin to Activate Platelet for Wound Healing  

Eum, Soo Jin (Department of Plastic Surgery Korea University College of Medicine)
Han, Seung Kyu (Department of Plastic Surgery Korea University College of Medicine)
Chun, Kyung Wook (Department of Plastic Surgery Korea University College of Medicine)
Kim, Woo Kyung (Department of Plastic Surgery Korea University College of Medicine)
Publication Information
Archives of Plastic Surgery / v.36, no.1, 2009 , pp. 19-23 More about this Journal
Abstract
Purpose: Platelet transplantation is a novel therapeutic strategy for acceleration of wound healing. When applying platelets, efficacy of adding thrombin to stimulate growth factor release from platelets has already been proved. However, no quantitative data of the thrombin treatment has been reported. The purpose of this study was to determine the optimal thrombin concentration to maximize growth factor release of platelets. In particular, this study was designed to quantify levels of platelet derived growth factor(PDGF)-BB, which is a major growth factor contained in the platelets, in vitro. Methods: Fresh platelets were obtained from a blood bank. They were suspended in DMEM/F - 12 and incubated with thrombin of various concentrations. The concentrations of thrombin tested were 0, 6.25, 12.5, 25, 50, 100, 200, and 400 IU/ml. After 30 minutes, 1, 3, 5, and 7 days, the levels of PDGF - BB were measured using enzyme linked immunosorbent assay. Platelets from four donors were included in this study. Each sample was tested in triplicate and the mean value was used as a data for each sample. Results: The addition of thrombin increased the level of PDGF - BB. Increases in storage time of platelets resulted in decreased levels of PDGF - BB. Higher levels of PDGF were detected in consort with increased thrombin concentrations. However, there was no significant difference between samples of 200 and 400 IU/ml concentrations. Conclusion: The results indicate that adding thrombin accelerates the release of growth factors from platelets and the optimal thrombin concentration to maximize this function is 200 IU/ml.
Keywords
Platelet; Wound healing; Thrombin;
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