In vitro Behavior of Silk Fibroin-Based Composite Resorbable Bone Fixation Devices

2019 ◽  
Author(s):  
Bryant Heimbach ◽  
Le Yu ◽  
Mei Wei
Keyword(s):  
Silk Fibroin ◽  
Bone Fixation ◽  
Fixation Devices

In vitro behavior of silk fibroin-based composite resorbable bone fixation devices

Materialia ◽  
2020 ◽  
Vol 9 ◽  
pp. 100587 ◽  
Author(s):  
Bryant Heimbach ◽  
Le Yu ◽  
Mei Wei
Keyword(s):  
Silk Fibroin ◽  
Bone Fixation ◽  
Fixation Devices

Evaluation of Structure-Controlled Silk Fibroin Coatings for Orthopedic Infection and In-Situ Osteogenesis: In Vitro and In Vivo

2020 ◽  
Author(s):  
Wenhao Zhou ◽  
Teng Zhang ◽  
Jianglong Yan ◽  
QiYao Li ◽  
Panpan Xiong ◽  
...  
Keyword(s):  
Silk Fibroin ◽  
Orthopedic Infection

scholarly journals Anti-Inflammatory Properties of Injectable Betamethasone-Loaded Tyramine-Modified Gellan Gum/Silk Fibroin Hydrogels

Biomolecules ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1456
Author(s):  
Isabel Matos Oliveira ◽  
Cristiana Gonçalves ◽  
Myeong Eun Shin ◽  
Sumi Lee ◽  
Rui Luis Reis ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Mechanical Properties ◽  
Silk Fibroin ◽  
Therapeutic Efficacy ◽  
Composite Structures ◽  
Gelation Time ◽  
Polymeric Materials ◽  
Gellan Gum ◽  
Traditional Use

Rheumatoid arthritis is a rheumatic disease for which a healing treatment does not presently exist. Silk fibroin has been extensively studied for use in drug delivery systems due to its uniqueness, versatility and strong clinical track record in medicine. However, in general, natural polymeric materials are not mechanically stable enough, and have high rates of biodegradation. Thus, synthetic materials such as gellan gum can be used to produce composite structures with biological signals to promote tissue-specific interactions while providing the desired mechanical properties. In this work, we aimed to produce hydrogels of tyramine-modified gellan gum with silk fibroin (Ty–GG/SF) via horseradish peroxidase (HRP), with encapsulated betamethasone, to improve the biocompatibility and mechanical properties, and further increase therapeutic efficacy to treat rheumatoid arthritis (RA). The Ty–GG/SF hydrogels presented a β-sheet secondary structure, with gelation time around 2–5 min, good resistance to enzymatic degradation, a suitable injectability profile, viscoelastic capacity with a significant solid component and a betamethasone-controlled release profile over time. In vitro studies showed that Ty–GG/SF hydrogels did not produce a deleterious effect on cellular metabolic activity, morphology or proliferation. Furthermore, Ty–GG/SF hydrogels with encapsulated betamethasone revealed greater therapeutic efficacy than the drug applied alone. Therefore, this strategy can provide an improvement in therapeutic efficacy when compared to the traditional use of drugs for the treatment of rheumatoid arthritis.

scholarly journals Photocuring Hyaluronic Acid/Silk Fibroin Hydrogel Containing Curcumin Loaded CHITOSAN Nanoparticles for the Treatment of MG-63 Cells and ME3T3-E1 Cells

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2302
Author(s):  
Qingwen Yu ◽  
Zhiyuan Meng ◽  
Yichao Liu ◽  
Zehao Li ◽  
Xing Sun ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Bone Regeneration ◽  
Water Uptake ◽  
Silk Fibroin ◽  
Bone Repair ◽  
Ph Value ◽  
Chitosan Nanoparticles ◽  
Vitro Assay ◽  
Long Term Treatment

After an osteosarcoma excision, recurrence and bone defects are significant challenges for clinicians. In this study, the curcumin (Cur) loaded chitosan (CS) nanoparticles (CCNP) encapsulated silk fibroin (SF)/hyaluronic acid esterified by methacrylate (HAMA) (CCNPs-SF/HAMA) hydrogel for the osteosarcoma therapy and bone regeneration was developed by photocuring and ethanol treatment. The micro or nanofibers networks were observed in the CCNPs-SF/HAMA hydrogel. The FTIR results demonstrated that alcohol vapor treatment caused an increase in β-sheets of SF, resulting in the high compression stress and Young’s modulus of CCNPs-SF/HAMA hydrogel. According to the water uptake analysis, SF caused a slight decrease in water uptake of CCNPs-SF/HAMA hydrogel while CCNPs could enhance the water uptake of it. The swelling kinetic results showed that both the CCNPs and the SF increased the swelling ratio of CCNPs-SF/HAMA hydrogel. The accumulative release profile of CCNPs-SF/HAMA hydrogel showed that the release of Cur from CCNPs-SF/HAMA hydrogel was accelerated when pH value was decreased from 7.4 to 5.5. Besides, compared with CCNPs, the CCNPs-SF/HAMA hydrogel had a more sustainable drug release, which was beneficial for the long-term treatment of osteosarcoma. In vitro assay results indicated that CCNPs-SF/HAMA hydrogel with equivalent Cur concentration of 150 μg/mL possessed both the effect of anti-cancer and promoting the proliferation of osteoblasts. These results suggest that CCNPs-SF/HAMA hydrogel with superior physical properties and the bifunctional osteosarcoma therapy and bone repair may be an excellent candidate for local cancer therapy and bone regeneration.

scholarly journals Potential of 3-D tissue constructs engineered from bovine chondrocytes/silk fibroin-chitosan for in vitro cartilage tissue engineering

Biomaterials ◽  
2011 ◽  
Vol 32 (25) ◽  
pp. 5773-5781 ◽  
Author(s):  
Nandana Bhardwaj ◽  
Quynhhoa T. Nguyen ◽  
Albert C. Chen ◽  
David L. Kaplan ◽  
Robert L. Sah ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Silk Fibroin ◽  
Cartilage Tissue Engineering ◽  
Cartilage Tissue ◽  
Tissue Constructs

scholarly journals In vitro evaluation of bi-layer silk fibroin scaffolds for gastrointestinal tissue engineering

2014 ◽  
Vol 5 ◽  
pp. 204173141455684 ◽  
Author(s):  
Debra Franck ◽  
Yeun Goo Chung ◽  
Jeannine Coburn ◽  
David L Kaplan ◽  
Carlos R Estrada ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Silk Fibroin ◽  
In Vitro Evaluation ◽  
Gastrointestinal Tissue

scholarly journals Optimization of Corneal Epithelial Progenitor Cell Growth onBombyx moriSilk Fibroin Membranes

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Thomas A. Hogerheyde ◽  
Shuko Suzuki ◽  
Jennifer Walshe ◽  
Laura J. Bray ◽  
Sally A. Stephenson ◽  
...  
Keyword(s):  
Silk Fibroin ◽  
Cell Morphology ◽  
Kinase Inhibitor ◽  
Keratinocyte Growth Factor ◽  
Rho Kinase ◽  
Corneal Epithelial Cell ◽  
Differentiation Markers ◽  
Corneal Epithelial ◽  
Collagen Iii

Scaffolds prepared from silk fibroin derived from cocoons of the domesticated silkworm mothBombyx morihave demonstrated potential to support the attachment and growth of human limbal epithelial (HLE) cellsin vitro. In this study, we attempted to further optimize protocols to promote the expansion of HLE cells onB. morisilk fibroin- (BMSF-) based scaffolds. BMSF films were initially coated with different extracellular matrix proteins and then analysed for their impact on corneal epithelial cell adhesion, cell morphology, and culture confluency. Results showed that collagen I, collagen III, and collagen IV consistently improved HCE-T cell adherence, promoted an elongated cell morphology, and increased culture confluency. By contrast, ECM coating had no significant effect on the performance of primary HLE cells cultured on BMSF films. In the second part of this study, primary HLE cells were grown on BMSF films in the presence of medium (SHEM) supplemented with keratinocyte growth factor (KGF) and the Rho kinase inhibitor, Y-27632. The results demonstrated that SHEM medium supplemented with KGF and Y-27632 dramatically increased expression of corneal differentiation markers, keratin 3 and keratin 12, whereas expression of the progenitor marker, p63, did not appear to be significantly influenced by the choice of culture medium.

In Vitro Evaluation of the Growth and Migration of Schwann Cells on Electrospun Silk Fibroin Nanofibers

2011 ◽  
Vol 175-176 ◽  
pp. 220-223 ◽  
Author(s):  
Ai Jun Hu ◽  
Bao Qi Zuo ◽  
Feng Zhang ◽  
Qing Lan ◽  
Huan Xiang Zhang
Keyword(s):  
Tissue Engineering ◽  
Peripheral Nerve ◽  
Nerve Regeneration ◽  
Schwann Cells ◽  
Silk Fibroin ◽  
Nerve Tissue ◽  
Nerve Tissue Engineering ◽  
And Migration ◽  
Silk Fibroin Nanofibers

Schwann cells (SCs) are primary structural and functional cells in peripheral nervous system and play a crucial role in peripheral nerve regeneration. Current challenge in peripheral nerve tissue engineering is to produce an implantable scaffold capable of bridging long nerve gaps and assist Scs in directing the growth of regenerating axons in nerve injury recovery. Electrospun silk fibroin nanofibers, fabricated for the cell culture in vitro, can provide such experiment support. Silk fibroin scaffolds (SFS) were fabricated with formic acid (FA), and the average fiber diameter was 305 ± 24 nm. The data from microscopic, immunohistochemical and scanning electron micrograph confirmed that the scaffold was beneficial to the adherence, proliferation and migration of SCs without exerting any significant cytotoxic effects on their phenotype. Thus, providing an experimental foundation accelerated the formation of bands of Bünger to enhance nerve regeneration. 305 nm SFS could be a candidate material for nerve tissue engineering.

Evaluation of absorbable composite polylactide–hydroxyapatite bone fixation devices: a cohort study

The Lancet ◽  
2016 ◽  
Vol 388 ◽  
pp. S30
Author(s):  
Jianxun Ding ◽  
Xiuli Zhuang ◽  
Xuesi Chen
Keyword(s):  
Cohort Study ◽  
Bone Fixation ◽  
Fixation Devices
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