Open AccessJournal Article
Design, production and biocompatibility of nanostructured porous HAp and Si-HAp ceramics as three-dimensional scaffolds for stem cell culture and differentiation
G Lehmann,Paola Palmero,Ilaria Cacciotti,R. Pecci,Luisa Campagnolo,Rossella Bedini,G. Siracusa,Alessandra Bianco,Antonella Camaioni,Laura Montanaro +9 more
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TLDR
The incorporation of small amounts of silicon within hydroxyapatite lattice significantly improves HAp solubility and rate of bone apposition, as well as the proliferation of human osteoblasts in vitro.Abstract:
Biocompatible and biodegradable scaffolds can provide a convenient support for stem cell differentiation leading to tissue
formation. Porous hydroxyapatite (HAp) scaffolds are clinically used for applications such as spinal fusions, bone tumors,
fractures, and in the replacement of failed or loose joint prostheses. The incorporation of small amounts of silicon within
hydroxyapatite lattice significantly improves HAp solubility and rate of bone apposition, as well as the proliferation of human
osteoblasts in vitro. In the present paper we report biocompatibility data obtained on a newly designed three-dimensional
nano-structured porous scaffold made of pure and silicon-substituted hydroxyapatite. A suitable amount of porosity (60 vol%)
was obtained within a well densified ceramic skeleton by using polyethylene spheres. Biocompatibility was tested by using
murine embryonic stem cells (ES). Cell culture analysis indicated that ES cells adhere well on both hydroxyapatite and
silicon-substituted hydroxyapatite scaffolds. Si-substitution, however, improved subsequent ES cell proliferation rate.
Bioresorption of hydroxyapatite scaffolds was tested by using human osteoclasts obtained from peripheral blood monocytes,
made to differentiate on disks and evaluated by SEM analysis.read more
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Silk Fibroin-Based Biomaterials for Biomedical Applications: A Review
Thang Phan Nguyen,Quang Vinh Nguyen,Van-Huy Nguyen,Thu-Ha Le,Vu Quynh Nga Huynh,Dai-Viet N. Vo,Quang Thang Trinh,Soo Young Kim,Quyet Van Le +8 more
TL;DR: The structure, composition, general properties, and structure-properties relationship of silk fibroin, the main protein of silkworm silk, are described and the methods used for the fabrication and modification of various materials are briefly addressed.
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In vitro cell performance on hydroxyapatite particles/poly(L-lactic acid) nanofibrous scaffolds with an excellent particle along nanofiber orientation.
Fei Peng,Xiaohua Yu,Mei Wei +2 more
TL;DR: Highly porous hydroxyapatite (HA)/poly(L-lactide) (PLLA) nanofibrous scaffolds prepared by incorporating needle-shaped nano- or micro-sized HA particles into PLLA nan ofibers using electrospinning exhibited higher cell viability and ALP activity than a pure PLLa scaffold.
Journal ArticleDOI
Accurate characterization of pure silicon-substituted hydroxyapatite powders synthesized by a new precipitation route
David Marchat,Maria Zymelka,Cristina Coelho,Laurent Gremillard,Lucile Joly-Pottuz,Florence Babonneau,Claude Esnouf,Jérôme Chevalier,Didier Bernache-Assollant +8 more
TL;DR: The results, particularly those from infrared spectroscopy, raise serious reservations about the phase purity of previously prepared and biologically evaluated SiHA powders, pellets and scaffolds in the literature.
Journal ArticleDOI
Development of novel aligned nanofibrous composite membranes for guided bone regeneration
TL;DR: Novel nanofibrous composite membranes developed through electrospinning of PCL-forsterite nanopowder are expected to be attractive in GBR membrane applications.