PMID- 29050585 OWN - NLM STAT- MEDLINE DCOM- 20180725 LR - 20181202 IS - 1879-1344 (Electronic) IS - 0144-8617 (Linking) VI - 178 DP - 2017 Dec 15 TI - Non-cytotoxic hybrid bioscaffolds of chitosan-silica: Sol-gel synthesis, characterization and proposed application. PG - 190-199 LID - S0144-8617(17)31072-X [pii] LID - 10.1016/j.carbpol.2017.09.047 [doi] AB - Biohybrid chitosan-silica scaffolds were synthesized through the sol-gel and the freeze drying processes. Hydrolysis and condensation of chitosan with tetraethylorthosilicate (TEOS) in the presence of 3-isocyanatopropyl triethoxysilane (ICPTES) were successfully carried out. Results obtained from FTIR, swelling test and pyrolysis confirmed that the hybrid scaffolds containing covalent coupling between the organic and inorganic networks were formed with high crosslink density of SiOSi bridging and could be classified as the class II material. The hybridization also resulted in improvements on mechanical strength and stability comparing to the pure chitosan. In vitro investigations on the guided bone regeneration and the cytotoxicity were also performed. SEM-EDS was used to examine the proliferation of calcium phosphate mineral at the scaffold surface after an immersion in simulated body fluid. The results revealed that the hybrid scaffolds exhibited a rapid induction of calcium phosphate mineral without cytotoxicity effect, reflecting an excellent in vitro bone bioactivity which was superior to the pure chitosan scaffold. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Pipattanawarothai, Athit AU - Pipattanawarothai A AD - Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand. Electronic address: atith.m@hotmail.com. FAU - Suksai, Chomchai AU - Suksai C AD - Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand. Electronic address: jomjai@buu.ac.th. FAU - Srisook, Klaokwan AU - Srisook K AD - Department of Biochemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand. Electronic address: klaokwan@buu.ac.th. FAU - Trakulsujaritchok, Thanida AU - Trakulsujaritchok T AD - Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand. Electronic address: thanida@buu.ac.th. LA - eng PT - Journal Article DEP - 20170914 PL - England TA - Carbohydr Polym JT - Carbohydrate polymers JID - 8307156 RN - 0 (Biocompatible Materials) RN - 7631-86-9 (Silicon Dioxide) RN - 9012-76-4 (Chitosan) SB - IM MH - Animals MH - Biocompatible Materials/chemistry MH - *Bone Regeneration MH - Chitosan/*chemistry MH - Human Umbilical Vein Endothelial Cells MH - Humans MH - Mice MH - Porosity MH - RAW 264.7 Cells MH - Silicon Dioxide/*chemistry MH - *Tissue Scaffolds OTO - NOTNLM OT - Bioscaffold OT - Bone regeneration OT - Chitosan OT - Cytotoxicity OT - Hybrid OT - Sol-gel EDAT- 2017/10/21 06:00 MHDA- 2018/07/26 06:00 CRDT- 2017/10/21 06:00 PHST- 2017/06/17 00:00 [received] PHST- 2017/08/31 00:00 [revised] PHST- 2017/09/13 00:00 [accepted] PHST- 2017/10/21 06:00 [entrez] PHST- 2017/10/21 06:00 [pubmed] PHST- 2018/07/26 06:00 [medline] AID - S0144-8617(17)31072-X [pii] AID - 10.1016/j.carbpol.2017.09.047 [doi] PST - ppublish SO - Carbohydr Polym. 2017 Dec 15;178:190-199. doi: 10.1016/j.carbpol.2017.09.047. Epub 2017 Sep 14.