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- W3217750160 abstract "ABSTRACT: Platelet-rich plasma (PRP) has been considered a promising therapeutic alternative, since platelets are rich in growth factors that are used in the Regenerative Medicine field. However, fresh PRP cannot be stored for long periods. This study aimed to develop a protocol for obtaining lyophilized canine PRP capable of maintaining viability after its reconstitution. For that purpose, canine PRP extraction and lyophilization protocols were initially tested. Subsequently, assays were carried out to quantify the growth factors VEGF and TGF-β, before and after the lyophilization process, gelation test and the three-dimensional gel structure analysis of the reconstituted lyophilized PRP by electron microscopy, as well as in vitro cell proliferation test in lyophilized PRP gel. Additionally, the immunogenicity test was performed, using allogeneic samples of lyophilized PRP. The results showed that the lyophilized PRP had adequate therapeutic concentrations of growth factors VEGF and TGF-β (9.1pg/mL and 6161.6pg/mL, respectively). The reconstituted PRP gel after lyophilization showed an in vitro durability of 10 days. Its electron microscopy structure was similar to that of fresh PRP. In the cell proliferation test, an intense division process was verified in mesenchymal stem cells (MSCs) through the three-dimensional mesh structure of the lyophilized PRP gel. The immunogenicity test showed no evidence of an immune reaction. The findings were promising, suggesting the possibility of having a lyophilized canine PRP that can be marketed. New in vivo and in vitro studies must be carried out for therapeutic confirmation." @default.
- W3217750160 created "2021-12-06" @default.
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- W3217750160 date "2021-01-01" @default.
- W3217750160 modified "2023-09-27" @default.
- W3217750160 title "In-vitro production and pre-validation of lyophilized canine platelet-rich plasma for therapeutic use" @default.
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- W3217750160 doi "https://doi.org/10.1590/1678-5150-pvb-6999" @default.
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