The growth factors' release was probably regulated by interaction between epithelial cells and fibroblasts.
These scaffolds can provide a platform for the delivery of growth factors release and drug delivery under controlled conditions.
It has been demonstrated that infusion of NTG lead to vasodilation of the meningeal blood vessels and then modulate the inflammatory factors release [23].
Paracrine activity of scaffold-seeded MSCs varied with the scaffold structure and growth factors release was globally improved in comparison with control alginate scaffolds.
Furthermore, fibroblasts are fundamental in maintaining homeostasis through the secretion of growth factors, release of matrix metalloproteinases, and involvement in wound repair because of cytoskeletal elements that facilitate contraction of healing wounds [8, 9].
Activation methods and storage procedures are also aspects under examination: in particular, activation has been demonstrated to affect the physical properties and growth factors release kinetics of PRP [43], even if no data have been reported about differences in clinical results.
