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IN VITRO AND IN VIVO EFFECTS OF PDGF-BB DELIVERY STRATEGIES ON TENDON HEALING: A REVIEW

Journal

EUROPEAN CELLS & MATERIALS
Volume 34, Issue -, Pages 15-39

Publisher

AO RESEARCH INSTITUTE DAVOS-ARI
DOI: 10.22203/eCM.v034a02

Keywords

PDGF-BB; tendon healing; heparin; electrospinning; biomechanics

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To promote and support tendon healing, one viable strategy is the use or administration of growth factors at the wound/rupture site. Platelet derived growth factor-BB (PDGF-BB), together with other growth factors, is secreted by platelets after injury. PDGF-BB promotes mitogenesis and angiogenesis, which could accelerate tendon healing. Therefore, in vitro studies with PDGF-BB have been performed to determine its effect on tenocytes and tenoblasts. Moreover, accurate and sophisticated drug delivery devices, aiming for a sustained release of PDGF-BB, have been developed, either by using heparin-binding and fibrin-based matrices or different electrospinning techniques. In this review, the structure and composition, as well as the healing process of tendons, are described. Part A deals with in vitro studies. They focus on the multiple effects evoked by PDGF-BB on the cellular level. Moreover, they address strategies for the sustained delivery of PDGF-BB. Part B focuses on animal models used to test different delivery strategies for PDGF-BB, in the context of tendon reconstruction. These studies showed that dosage and timing of PDGF-BB application are the most important factors for deciding which delivery device should be applied for a specific tendon laceration.

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