نتایج جستجو برای: nanofbrous scaffold
تعداد نتایج: 23926 فیلتر نتایج به سال:
A previously developed poly-L-lactide scaffold releasing granulocyte colony-stimulating factor (PLLA/GCSF) was tested in a rabbit chronic model of myocardial infarction (MI) as a ventricular patch. Control groups were constituted by healthy, chronic MI and nonfunctionalized PLLA scaffold. PLLA-based electrospun scaffold efficiently integrated into a chronic infarcted myocardium. Functionalizati...
This study aimed to examine the bilayered scaffold containing hydroxyapatite (HA) and N, Ocarboxymethylated chitosan (PVA/NOCC) seeded with mesenchymal stem cells in vitro to determine its potential use as a scaffold in tissue engineering. SEM analysis revealed that pores in this scaffold were interconnected with parallel grooves and ridges. EDS indicated that the level of calcium was relativel...
Tissue engineering stratified scaffolds for articular cartilage and subchondral bone defects repair.
Due to their good biocompatibility and mechanical integrity, tissue engineering scaffolds have become a principal method of repair and regeneration of osteochondral defects. To improve their intrinsic properties, control their degenerative times, and enhance their cell adhesion and differentiation, numerous scaffold architectures and formation methods have been developed and tested, but the ide...
The study described a novel bone tissue scaffold fabricated by computer-aided, air pressure-aided deposition system to control the macro- and microstructure precisely. The porcine bone marrow stem cells (PBMSCs) seeded on either mPEG-PCL-mPEG (PCL) or mPEG-PCL-mPEG/hydroxyapatite (PCL/HA) composite scaffold were cultured under osteogenic medium to test the ability of osteogenesis in vitro. The ...
Considering the load-bearing physiological requirement of articular cartilage, scaffold for cartilage tissue engineering should exhibit appropriate mechanical responses as natural cartilage undergoing temporary deformation on loading with little structural collapse, and recovering to the original geometry on unloading. A porous elastomeric poly l-lactide-co-ɛ-caprolactone (PLCL) was generated a...
The scaffold is a key element in cartilage tissue engineering. The components of Wharton's jelly are similar to those of articular cartilage and it also contains some chondrogenic growth factors, such as insulin-like growth factor I and transforming growth factor-β. We fabricated a tissue-engineered cartilage scaffold derived from Wharton's jelly extracellular matrix (WJECM) and compared it wit...
OBJECTIVE Collagen hydrogel scaffold exhibits bio-safe properties and facilitates periodontal wound healing. However, regenerated tissue volume is insufficient. Fibroblast growth factor-2 (FGF2) up-regulates cell behaviors and subsequent wound healing. We evaluated whether periodontal wound healing is promoted by application of collagen hydrogel scaffold in combination with FGF2 in furcation de...
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 ...
Rapid prototyping techniques have been widely used in tissue engineering to fabricate scaffolds with controlled architecture. Despite the ability of these techniques to fabricate regular structures, the consistency with which these regular structures are produced throughout the scaffold and from one scaffold to another needs to be quantified. Small variations at the pore level can affect the lo...
INVESTIGATION OF PHYSIOCHEMICAL PROPERTIES OF A NOVEL GRADIENTCALCIUM POLYPHOSPHATE BONE SCAFFOLD AND ITS INFLUENCE ONCELLULAR BEHAVIORByLIANG CHENDecember 2013Advisor: Dr. Weiping RenMajor: Biomedical EngineeringDegree: Master of ScienceA good designed bone scaffold is crucial to bone tissue engineering. We have developedand characterized a novel gradien...
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