scholarly journals Evaluation on Cytotoxicity of Natural Rubber Latex Nanoparticles and Application in Bone Tissue Engineering

2017 ◽  
Vol 12 (0) ◽  
pp. 1-10 ◽  
Author(s):  
Mitsuru Furuya ◽  
Naoki Shimono ◽  
Kazuyuki Yamazaki ◽  
Ryota Domura ◽  
Masami Okamoto
Keyword(s):  
Tissue Engineering ◽  
Natural Rubber ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Natural Rubber Latex ◽  
Rubber Latex

Inkjet Printing of Conductive Materials for Smart Textiles and Flexible Electronics

2009 ◽  
Vol 1192 ◽  
Author(s):  
Veronica Sanchez Romaguera ◽  
Marie B. Madec ◽  
Stephen G. Yeates
Keyword(s):  
Tissue Engineering ◽  
Natural Rubber ◽  
Metal Nanoparticles ◽  
Flexible Electronics ◽  
Inkjet Printing ◽  
Natural Rubber Latex ◽  
Mechanical Deformation ◽  
Electrical Performance ◽  
Rubber Latex ◽  
Conductive Materials

AbstractIn recent years, inkjet printing has become an important technology for many applications, such as organic electronics, nanotechnology, and tissue engineering, on account of its ability to precisely deposit pico litre volumes of solutions or suspensions, including polymers and metal nanoparticles, in well-defined patterns [1]. In this work we focus on the electrical performance of PEDOT:PSS conductors inkjet printed onto natural rubber latex and the effect of mechanical deformation on conductor integrity and electrical performance. 1. B.-J de Gans, P. C. Duineveld and U. S. Schubert, Adv. Mater., 16, (2004).

HYDROXYAPATITE, ALGINATE, AND CHITOSAN FOR BONE SCAFFOLDS: SPECTROSCOPY STUDY

2016 ◽  
Vol 19 (2) ◽  
pp. 93-100
Author(s):  
Lalita El Milla
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Functional Groups ◽  
Bone Growth ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Tissue Engineering Scaffolds ◽  
Hydroxyapatite Powder ◽  
Materials Used

Scaffolds is three dimensional structure that serves as a framework for bone growth. Natural materials are often used in synthesis of bone tissue engineering scaffolds with respect to compliance with the content of the human body. Among the materials used to make scafffold was hydroxyapatite, alginate and chitosan. Hydroxyapatite powder obtained by mixing phosphoric acid and calcium hydroxide, alginate powders extracted from brown algae and chitosan powder acetylated from crab. The purpose of this study was to examine the functional groups of hydroxyapatite, alginate and chitosan. The method used in this study was laboratory experimental using Fourier Transform Infrared (FTIR) spectroscopy for hydroxyapatite, alginate and chitosan powders. The results indicated the presence of functional groups PO43-, O-H and CO32- in hydroxyapatite. In alginate there were O-H, C=O, COOH and C-O-C functional groups, whereas in chitosan there were O-H, N-H, C=O, C-N, and C-O-C. It was concluded that the third material containing functional groups as found in humans that correspond to the scaffolds material in bone tissue engineering.

PLGA+HA/βTCP scaffold incorporating simvastatin: a promising biomaterial for bone tissue engineering

2020 ◽  
Author(s):  
Mariane Beatriz Sordi ◽  
Ariadne Cristiane Cabral da Cruz ◽  
Águedo Aragones ◽  
Mabel Mariela Rodríguez Cordeiro ◽  
Ricardo de Souza Magini
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Thermal Analyses ◽  
Chemical Properties ◽  
Biological Properties ◽  
Scanning Calorimetry ◽  
Evaporation Technique ◽  
Porosity Analysis ◽  
Biphasic Ceramic

The aim of this study was to synthesize, characterize, and evaluate degradation and biocompatibility of poly(lactic-co-glycolic acid) + hydroxyapatite / β-tricalcium phosphate (PLGA+HA/βTCP) scaffolds incorporating simvastatin (SIM) to verify if this biomaterial might be promising for bone tissue engineering. Samples were obtained by the solvent evaporation technique. Biphasic ceramic particles (70% HA, 30% βTCP) were added to PLGA in a ratio of 1:1. Samples with SIM received 1% (m:m) of this medication. Scaffolds were synthesized in a cylindric-shape and sterilized by ethylene oxide. For degradation analysis, samples were immersed in PBS at 37 °C under constant stirring for 7, 14, 21, and 28 days. Non-degraded samples were taken as reference. Mass variation, scanning electron microscopy, porosity analysis, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetry were performed to evaluate physico-chemical properties. Wettability and cytotoxicity tests were conducted to evaluate the biocompatibility. Microscopic images revealed the presence of macro, meso, and micropores in the polymer structure with HA/βTCP particles homogeneously dispersed. Chemical and thermal analyses presented very similar results for both PLGA+HA/βTCP and PLGA+HA/βTCP+SIM. The incorporation of simvastatin improved the hydrophilicity of scaffolds. Additionally, PLGA+HA/βTCP and PLGA+HA/βTCP+SIM scaffolds were biocompatible for osteoblasts and mesenchymal stem cells. In summary, PLGA+HA/βTCP scaffolds incorporating simvastatin presented adequate structural, chemical, thermal, and biological properties for bone tissue engineering.

Bone tissue engineering and repair by gene therapy

10.2741/2724 ◽  
2008 ◽  
Vol 13 (13) ◽  
pp. 833 ◽  
Author(s):  
Volker, M. Betz
Keyword(s):  
Tissue Engineering ◽  
Gene Therapy ◽  
Bone Tissue Engineering ◽  
Bone Tissue
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