نتایج جستجو برای: biodegradable mgzn scaffold

تعداد نتایج: 36064  

Journal: :Journal of biomedical materials research. Part A 2003
C E Holy J A Fialkov J E Davies M S Shoichet

Engineering trabecular-like, three-dimensional bone tissue throughout biodegradable polymer scaffolds is a significant challenge. Using a novel processing technique, we have created a biodegradable scaffold with geometry similar to that of trabecular bone. When seeded with bone-marrow cells, new bone tissue, the geometry of which reflected that of the scaffold, was evident throughout the scaffo...

In this study, using biodegradable polymers, nanofiberouse scaffolds were fabricated from the layer-by-layer electrospinning method, including two layer that poly (ε-caprolactone), polyvinylpyrrolidone deposited at first layer and poly (ε-caprolactone), polyvinyl alcohol , β-tricalcium phosphate at latter. After prepration of scaffolds, scanning electron microscopy (SEM), swelling, porosity, me...

ژورنال: دانشور پزشکی 2013
امامقلی, عسگر , بوربور, زهرا , ذوالفقاری, داوود , صدرایی, سید همایون , صدری, مینو , کاکا, غلامرضا ,

 Background and Objective: Several studies have been performed to achieve a scaffold for growing stem cells. The purpose of the study was to provide a biodegradable scaffold of chitosan - poly ethylene oxide (PEO) with the ability for growing, proliferation, un-differentiation and apoptosis of bone marrow stromal cells (BMSCs). Materials and Methods: First, formation of chitosan-PEO nanof...

Journal: :Biomaterials 2008
Eero Waris Nureddin Ashammakhi Mauri Lehtimäki Riitta-Mari Tulamo Minna Kellomäki Pertti Törmälä Yrjö T Konttinen

Biodegradable poly-L/D-lactide (P(L/D)LA) 96/4 joint scaffold arthroplasty is a recently clinically introduced concept in the reconstruction of small joints, however its histology and function in vivo is unknown. In this experimental study on 11 minipigs the fifth metacarpophalangeal joints were reconstructed using a P(L/D)LA 96/4 joint scaffold or Swanson silicone implant. They were evaluated ...

Journal: :Biomacromolecules 2008
Lihong Huang Xiuli Zhuang Jun Hu Le Lang Peibiao Zhang Yu Wang Xuesi Chen Yen Wei Xiabin Jing

To obtain one biodegradable and electroactive polymer as the scaffold for tissue engineering, the multiblock copolymer PLAAP was designed and synthesized with the condensation polymerization of hydroxyl-capped poly( l-lactide) (PLA) and carboxyl-capped aniline pentamer (AP). The PLAAP copolymer exhibited excellent electroactivity, solubility, and biodegradability. At the same time, as one scaff...

Journal: :European cells & materials 2010
J P Gleeson N A Plunkett F J O'Brien

There is an enduring and unmet need for a bioactive, load-bearing tissue-engineering scaffold, which is biocompatible, biodegradable and capable of facilitating and promoting osteogenesis when implanted in vivo. This study set out to develop a biomimetic scaffold by incorporating osteoinductive hydroxyapatite (HA) particles into a highly porous and extremely biocompatible collagen-based scaffol...

Journal: :Journal of biomedical materials research. Part A 2007
Laura M Y Yu Karineh Kazazian Molly S Shoichet

Nerve fibres are guided to their targets by the combined actions of chemotactic and haptotactic stimuli; however, translating these stimuli to a scaffold that will promote nerve regeneration is nontrivial. In pursuit of this goal, we synthesized and characterized cell-adhesive, biodegradable chitosan scaffolds. Chitosan amine groups were reacted with methacrylic anhydride resulting in a water s...

Journal: :Journal of biomedical materials research. Part A 2008
Joseph George Jun Onodera Teruo Miyata

Tissue engineering requires a mechanically stable, biocompatible, and biodegradable scaffold that permits cell adherence and proliferation, allows preservation of cell-specific properties, and suitable for surgical implantations. In this study, honeycomb collagen sheet was used for three-dimensional (3D) cultures of human skin fibroblasts and characterized as an effective and suitable scaffold ...

Journal: :The Journal of thoracic and cardiovascular surgery 2005
Osamu Ishii Michael Shin Taijiro Sueda Joseph P Vacanti

OBJECTIVE Cardiac tissue engineering has been proposed as a treatment to repair impaired hearts. Bioengineered cardiac grafts are created by combining autologous cell transplantation with a degradable scaffold as a temporary extracellular matrix. Here we present a system for engineered myocardium combining cultured cardiomyocytes and a novel biodegradable scaffold with a unique extracellular ma...

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