Abstract
ABSTRACTRandom and aligned electrospun scaffolds were prepared combining poly(l‐lactic acid) (PLLA) and activated platelet‐rich plasma (PRGF) at various proportions, with the aim of elucidating the role of nanofibers orientation and growth factors on cell attachment and proliferation. PRGF is released from scaffolds in a sustained way for at least 3 weeks, without an initial burst effect. Mesenchymal stem cells (MSCs) seeded on the random scaffolds present a polygonal and random orientation in any direction of the scaffold. On the other hand, aligned scaffolds are able to promote cell attachment and proliferation in the direction of the nanofibers. The incorporation of PRGF in the scaffolds enhances cell proliferation for at least 2 weeks. Overall, aligned electrospun PLLA : PRGF scaffolds can encapsulate growth factors at relatively large proportions and sustain their release to enhance cell attachment and proliferation as well as eliciting cell alignment. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41372.
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