scholarly journals A novel akermanite/poly (lactic-co-glycolic acid) porous composite scaffold fabricated via a solvent casting-particulate leaching method improved by solvent self-proliferating process

2017 ◽  
Vol 4 (4) ◽  
pp. 233-242 ◽  
Author(s):  
Yao Deng ◽  
Mengjiao Zhang ◽  
Xianchun Chen ◽  
Ximing Pu ◽  
Xiaoming Liao ◽  
...  
Keyword(s):  
Glycolic Acid ◽  
Composite Scaffold ◽  
Solvent Casting ◽  
Porous Composite ◽  
Particulate Leaching

scholarly journals Adhesion and Proliferation of Osteoblast-Like Cells on Porous Polyetherimide Scaffolds

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Yanbo Zhang ◽  
Ruiyan Li ◽  
Wenzheng Wu ◽  
Yun’an Qing ◽  
Xiongfeng Tang ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Contact Angle ◽  
Cell Adhesion ◽  
Phase Composition ◽  
Cell Morphology ◽  
Solvent Casting ◽  
Water Contact ◽  
Particulate Leaching ◽  
Cell Adhesion And Proliferation ◽  
Better Than

The purpose of this work was to investigate the porous polyetherimide scaffold (P-PEIs) as an alternative biopolymer for bone tissue engineering. The P-PEIs was fabricated via solvent casting and particulate leaching technique. The morphology, phase composition, roughness, hydrophilicity, and biocompatibility of P-PEIs were evaluated and compared with polyetherimide (PEI) and Ti6Al4V disks. P-PEIs showed a biomimetic porous structure with a modulus of 78.95 ± 2.30 MPa. The water contact angle of P-PEIs was 75.4 ± 3.39°, which suggested that P-PEIs had a wettability surface. Moreover, P-PEIs provides a feasible environment for cell adhesion and proliferation. The relative cell adhesion capability and the cell morphology on P-PEIs were better than PEI and Ti6Al4V samples. Furthermore, the MC3T3-E1 cells on P-PEIs showed faster proliferation rate than other groups. It was revealed that the P-PEIs could be a potential material for the application of bone regeneration.

scholarly journals A dual-application poly (dl-lactic-co-glycolic) acid (PLGA)-chitosan composite scaffold for potential use in bone tissue engineering

2017 ◽  
Vol 28 (16) ◽  
pp. 1966-1983 ◽  
Author(s):  
Yamina Boukari ◽  
Omar Qutachi ◽  
David J. Scurr ◽  
Andrew P. Morris ◽  
Stephen W. Doughty ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Glycolic Acid ◽  
Composite Scaffold ◽  
Chitosan Composite ◽  
Potential Use

Performance of a porous composite scaffold containing silk fibroin: Applied research repair on oral jaw epithelial defects

2020 ◽  
Vol 10 (4) ◽  
pp. 490-502
Author(s):  
Huajun Zhu ◽  
Chunyu Qian ◽  
Wanshu Xiao ◽  
Qiang Zhang ◽  
Zili Ge
Keyword(s):  
Mechanical Properties ◽  
Contact Angle ◽  
Silk Fibroin ◽  
Composite Scaffold ◽  
Epithelial Tissue ◽  
Porous Composite ◽  
Clinical Value ◽  
Freeze Dried ◽  
Silk Fibroin Film ◽  
Oral Epithelial

Application research on repairing oral and maxillofacial epithelial defects with filin-protein porous composite scaffold. The silk fibroin solution was synthesized by hydrothermal synthesis, and the film was prepared by stirring and pouring. Then silk fibroin film and silk fibroin freeze-dried support were prepared by stirring and smooth casting. It was characterized by FTIR, mechanical properties, dissolution detection, contact Angle and SEM. To evaluate the performance of this material in repairing rabbit oral mucosa and rabbit skin epithelial defects. The characterization shows that the material has good contact Angle, mechanical properties, dissolution and biocompatibility. It has good repair function to rabbit oral epithelial tissue and skin epithelial tissue. Silk fibroin has excellent and unique properties. It has good development prospects and great clinical value in tissue regeneration.

scholarly journals A biodegradable porous composite scaffold of PCL/BCP containing Ang-(1-7) for bone tissue engineering

Cerâmica ◽  
2012 ◽  
Vol 58 (348) ◽  
pp. 481-488 ◽  
Author(s):  
F. A. Macedo ◽  
E. H. M. Nunes ◽  
W. L. Vasconcelos ◽  
R. A. Santos ◽  
R. D. Sinisterra ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Composite Scaffold ◽  
Weight Ratio ◽  
High Porosity ◽  
X Rays ◽  
Solvent Casting

Highly porous three-dimensional biodegradable scaffolds was obtained from beta-tricalcium phosphate-hydroxyapatite bioceramic (BCP), PCL, and Angiotensin-(1-7). We used the solvent casting and particulate leaching methods (SC/PL). The processed scaffolds were characterized by X-ray microtomography (µ-CT). Biocompatibility tests in vitro were performed during three and seven days using MTT and Alkaline Phosphatase Activity (APA) assays. Both the MTT activity and APA were evaluated using a one-way ANOVA test. The µ-CT results showed that the increase of the PCL:BCP weight ratio leads to structures with lower pore sizes. The pore interconnectivity of the processed scaffolds was evaluated in terms of the fragmentation index (FI). We observed that the obtained composites present poorly connected structures, with close values of FI. However, as the polymer phase is almost transparent to the X-rays, it was not taken into consideration in the µ-CT tests. The MTT activity assay revealed that scaffolds obtained with and without Angiotensin-(1-7) present mild and moderate cytotoxic effects, respectively. The APA assay showed that the rat osteoblasts, when in contact for three days with the PCL composites, presented an APA similar to that observed for the control cells. Nevertheless, for an incubation time of seven days we observed a remarkable decrease in the alkaline phosphatase activity. In conclusion, using the solvent casting and salt leaching method we obtained 3D porous that are composites of PCL, BC and Ang-(1-7), which have suitable shapes for the bone defects, a high porosity and interconnect pores. Furthermore, the viability in vitro showed that the scaffolds have potential for drug delivery system and could be used in future in vivo tests.

Preparation of an rhBMP-2 loaded mesoporous bioactive glass/calcium phosphate cement porous composite scaffold for rapid bone tissue regeneration

2015 ◽  
Vol 3 (43) ◽  
pp. 8558-8566 ◽  
Author(s):  
Nan Li ◽  
Chuan Jiang ◽  
Xingdi Zhang ◽  
Xinfeng Gu ◽  
Jingwei Zhang ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Bioactive Glass ◽  
Bone Tissue ◽  
Tissue Regeneration ◽  
Calcium Phosphate Cement ◽  
Composite Scaffold ◽  
Early Stage ◽  
Bone Tissue Regeneration ◽  
Porous Composite ◽  
Mesoporous Bioactive Glass

An rhBMP-2/MBG/CPC scaffold is beneficial for rapid bone tissue regeneration in the early stage.

scholarly journals Bimodal Porous Scaffolds by Sequential Electrospinning of Poly(glycolic acid) with Sucrose Particles

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
B. Wulkersdorfer ◽  
K. K. Kao ◽  
V. G. Agopian ◽  
A. Ahn ◽  
J. C. Dunn ◽  
...  
Keyword(s):  
Glycolic Acid ◽  
Three Dimensional ◽  
Porous Scaffolds ◽  
Hybrid Technique ◽  
Electrospun Scaffolds ◽  
Limited Application ◽  
Novel Method ◽  
Particulate Leaching ◽  
The One ◽  
Laminated Structures

Electrospinning is a method to produce fine, biopolymer mesh with a three-dimensional architecture that mimics native extra-cellular matrix. Due to the small fiber diameter created in this process, conventional electrospun scaffolds have pore sizes smaller than the diameter of most cells. These scaffolds have limited application in tissue engineering due to poor cell penetration. We developed a hybrid electrospinning/particulate leaching technique to create scaffolds with increased porosity and improved cellular ingrowth. Poly(glycolic acid) (PGA) and a sucrose-ethanol suspension were electrospun in equal, alternating sequences at intervals of one, two, and ten minutes each. The scaffolds revealed fiber mesh with micropores of 10 m and uniformly distributed sucrose particles. Particulate leaching of sucrose from the one- or two-minute scaffolds revealed honeycomb structures with interconnected macropores between 50 and 250 m. Sucrose leaching from the ten-minute scaffolds resulted in laminated structures with isolated macropores between 200 and 350 m. Macropore size was directly proportional to the duration of the sucrose spinning interval. After 24 hours of cell culture, conventionally spun scaffolds demonstrated no cellular penetration. Conversely, the PGA/sucrose scaffolds demonstrated deep cellular penetration. This hybrid technique represents a novel method of generating electrospun scaffolds with interconnected pores suitable for cellular ingrowth.

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