A New Generation of Electrospun Fibers Containing Bioactive Glass Particles for Wound Healing

Abstract

Chitosan fibers blended with polyethylene oxide (CHIT_PEO) and crosslinked with genipin were fabricated by electrospinning technique. Subsequently, CHIT_PEO bioactive glass composite electrospun mats were fabricated with the aim to achieve flexible structures with adequate mechanical properties and improved biological performance respect to CHIT_PEO fibers, for potential applications in wound healing. Three different compositions of bioactive glasses (BG) were selected and investigated: 45S5 BG, a Sr and Mg containing bioactive glass (BGMS10) and a Zn-containing bioactive glass (BGMS_2Zn). Particulate BGs (particles size < 20 μm) were separately added to the starting CHIT_PEO solution before electrospinning. The two recently developed bioactive glasses (BGMS10 and BGMS_2Zn) showed very promising biological properties in terms of bioactivity and cellular viability; thus, such compositions were added for the first time to CHIT_PEO solution to fabricate composite electrospun mats. The incorporation of bioactive glass particles and their distribution into CHIT_PEO fibers were assessed by SEM and FTIR analyses. Furthermore, CHIT_PEO composite electrospun mats showed improved mechanical properties in terms of Young’s Modulus compared to neat CHIT_PEO fibers; on the contrary, the values of tensile strain at break (%) were comparable. Biological performance in terms of cellular viability was investigated by means of WST-8 assay and CHIT_PEO composite electrospun mats showed cytocompatibility and the desired cellular viability.

Modified Sol–Gel Synthesis of Mesoporous Borate Bioactive Glasses for Potential Use in Wound Healing

“…The financial burden is higher than the $25 billion/year spent on CNHW treatment in just the United States [ 1 ]. Therefore, numerous attempts have been made to manage CNHW, including the use of traditional wound dressings (e.g., gauze and ointments) and advanced dressings (e.g., biodegradable and biocompatible materials) [ 2 , 3 ]. However, bacterial infections are still among the most challenging issues ahead of treating CNHW in the clinic and may impede wound healing.…”

Cell loaded hydrogel containing Ag‐doped bioactive glass–ceramic nanoparticles as skin substitute: Antibacterial properties, immune response, and scarless cutaneous wound regeneration

“…Furthermore, the findings demonstrated that the tensile strain at break of GC‐Ch/PEO/Gel and Ag/GC‐Ch/PEO/Gel nanofibrous scaffolds enhanced, compared to Ch/PEO/Gel nanofibrous scaffold, showing that the nanocomposites possess higher mechanical properties than neat nanofibers (Figure 3a). This can be related to the impairing effect of particles such as GCs on the structure of the polymeric scaffolds by serving as hard inclusions 28,29 …”

“…This can be related to the impairing effect of particles such as GCs on the structure of the polymeric scaffolds by serving as hard inclusions. 28,29 Thermal gravimetric analysis (TGA) measures the weight change of a sample as a function of temperature, while subjected to a controlled heating program. Figure 3b,c show TG and DTG thermograms of Ch/PEO/Gel, GC-Ch/PEO/Gel, and the Ag/GC-Ch/PEO/Gel F I G U R E 1 (a) GC and Ag/GC synthesis by the sol-gel method (b) GC-Ch/PEO/Gel and Ag/GC-Ch/PEO/Gel nanofibrous scaffold fabrication through electrospinning samples.…”

Mesoporous Silica Nanoparticles and Mesoporous Bioactive Glasses for Wound Management: From Skin Regeneration to Cancer Therapy

“…These substances have shown great promise in managing both acute and chronic wounds, and their emerging applications in treating skin malignancies are still under evaluation [ 17 ]. Bioactive glasses were previously proven as suitable additives for promoting different stages of skin wounds [ 42 , 43 ]. Up to now, various formulations of bioactive glasses, including silicate-, phosphate-, as well as borate- and borosilicate-based glasses, have been investigated in treating skin injuries with promising outcomes [ 44 , 45 , 46 ].…”