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Potential of Novel Electrospun Core-Shell Structured Polyurethane/Starch (Hyaluronic Acid) Nanofibers for Skin Tissue Engineering: In Vitro and in Vivo Evaluation Publisher Pubmed

Summary: Scientists report nanofiber dressings with starch and hyaluronic acid boost wound healing, ideal for skin repair. #WoundHealing #Biomedical

Movahedi M1 ; Asefnejad A1 ; Rafienia M2 ; Khorasani MT3
Authors

Source: International Journal of Biological Macromolecules Published:2020


Abstract

The biomaterials with excellent biocompatibility and biodegradability ¬can lead to satisfactory wound healing. In this study, core-shell structured PU (polyurethane)/St (Starch) and PU/St (Hyaluronic Acid (HA)) nanofibers were fabricated with coaxial electrospinning technique. The morphology characterization of the core-shell structure of nanofibers was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images. Contact-angle measurements were confirmed the core/shell structure of the electrospun nanofibers with shell and core feed rates of 0.675 L/min and <0.135 L/min, respectively. The average fiber diameter values were calculated for polyurethane nanofibers (836 ± 172.13 nm), PU/St nanofibers (612 ± 93.21 nm) and PU/St (HA) nanofibers (428 ± 78.32 nm). The average porosity values of scaffolds were determined for PU (1.251 ± 0.235 μm), PU/St (1.734 ± 0.284 μm) and PU/St (HA) (3.186 ± 0.401 μm). The core-shell PU/St and PU/St (HA) nanofibers were evaluated in vitro by using mouse fibroblasts (L929) cells. Cell morphology and viability results were exhibited significant enhancement in cell promoting and cell attachment. Furthermore, in vivo studies was indicated Core-shell PU/St (HA) wound dressing can be an appropriate candidate for skin tissue engineering and wound healing. © 2018
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