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Author = Kelly, Daniel;
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Displaying Results 101 - 124 of 124 on page 5 of 5
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Sommera cusucoana, a new species of Rubiaceae from Honduras
(2015)
KELLY, DANIEL
Sommera cusucoana, a new species of Rubiaceae from Honduras
(2015)
KELLY, DANIEL
http://hdl.handle.net/2262/82179
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Stresses in peripheral arteries following stent placement: a finite element analysis
(2009)
PRENDERGAST, PATRICK; KELLY, DANIEL; LALLY, CAITRIONA
Stresses in peripheral arteries following stent placement: a finite element analysis
(2009)
PRENDERGAST, PATRICK; KELLY, DANIEL; LALLY, CAITRIONA
Abstract:
The success of stents to restore blood flow in atherosclerotic peripheral arteries is low relative to coronary arteries. It has been shown that joint flexion induces a mechanical environment that makes stent placement in these arteries highly incompatible, and damage and destruction of stents has been recorded. However, the effect of this environment on the stresses in the arteries is unknown. It is hypothesised that the stresses induced in arteries as a result of this mechanical environment could be sufficient to explain the relatively low success rates. To investigate this hypothesis, a finite element model of the stent-artery interaction was developed. Following stent expansion, bending was simulated by applying a displacement boundary condition to the artery. It is found that high stresses occur at the proximal/distal ends of the stent. As high stress and vascular injury are hypothesised to cause restenosis, the results presented here suggest that the mechanical environment of p...
http://hdl.handle.net/2262/38226
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Substrate stiffness and oxygen availability as regulators of mesenchymal stem cell differentiation within a mechanically loaded bone chamber.
(2014)
KELLY, DANIEL
Substrate stiffness and oxygen availability as regulators of mesenchymal stem cell differentiation within a mechanically loaded bone chamber.
(2014)
KELLY, DANIEL
Abstract:
M echanical stimuli such as tissue deformation and fluid flow are often implicated as regulators of mesenchymal stem cell (MSC) differentiation during regenerative events in vivo . However , in vitro studies have identified several other physical and biochemical environmental cues , such as substrate stiffness and oxygen availability, as key regulators of stem cell fate . Hypotheses for how MSC differentiation is regulated in vivo can be either corroborated or rejected based on the ability of in silico models to accurately predic t spatial and temporal patterns of tissue differentiation observed experimentally . The goal of this study was to employ a previously de veloped computational framework to test the hypothesis that substrate stiffness and oxygen availability regulate stem cel l differentiation during t issue regeneration within an implanted bone chamber. To enable a prediction of the oxygen levels within the bone chamber, a lattice model of angiogenesis was implemented where...
http://hdl.handle.net/2262/72872
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Tensile and compressive properties of fresh human carotid atherosclerotic plaques.
(2009)
KELLY, DANIEL; LALLY, CAITRIONA
Tensile and compressive properties of fresh human carotid atherosclerotic plaques.
(2009)
KELLY, DANIEL; LALLY, CAITRIONA
http://hdl.handle.net/2262/31946
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Testing indicators of biodiversity for plantation forests
(2013)
MITCHELL, FRASER; KELLY, DANIEL
Testing indicators of biodiversity for plantation forests
(2013)
MITCHELL, FRASER; KELLY, DANIEL
Abstract:
In many parts of the world, plantations make up a considerable proportion of the total forest area. In such regions, the identification of high biodiversity value stands and of management practices to enhance biodiversity is essential if the goals of Sustainable Forest Management are to be achieved. Since complete biodiversity assessments are rarely possible, efforts have been increasingly focussed on the use of indicators. Of particular interest are indicators applicable to individual stands that require no specialist taxonomic or technical knowledge to assess. Candidate biodiversity indicators had been identified in a previous study using data from Irish Sitka spruce (Picea sitchensis) and ash (Fraxinus excelsior) plantations but had yet to be tested on independent data. In the present study, the provisional indicators for vascular plant, bryophyte, spider and bird diversity were tested on data from Irish Scots pine (Pinus sylvestris), oak (Quercus petraea/Quercus robur), Sitka sp...
http://hdl.handle.net/2262/72534
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The Composition of Engineered Cartilage at the Time of Implantation Determines the Likelihood of Regenerating Tissue with a Normal Collagen Architecture.
(2013)
KELLY, DANIEL
The Composition of Engineered Cartilage at the Time of Implantation Determines the Likelihood of Regenerating Tissue with a Normal Collagen Architecture.
(2013)
KELLY, DANIEL
Abstract:
The biomechanical functionality of articular cartilage is derived from both its biochemical composition and the architecture of the collagen network. Failure to replicate this normal Benninghoff architecture in regenerating articular cartilage may in turn predispose the tissue to failure. In this article, the influence of the maturity (or functionality) of a tissue-engineered construct at the time of implantation into a tibial chondral defect on the likelihood of recapitulating a normal Benninghoff architecture was investigated using a computational model featuring a collagen remodeling algorithm. Such a normal tissue architecture was predicted to form in the intact tibial plateau due to the interplay between the depth-dependent extracellular matrix properties, foremost swelling pressures, and external mechanical loading. In the presence of even small empty defects in the articular surface, the collagen architecture in the surrounding cartilage was predicted to deviate significantly...
http://hdl.handle.net/2262/66929
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The effect of concentration, cooling rate and cell seeding density on the initial mechanical properties of agarose hydrogels.
(2009)
Buckley, Conor; Robinson, Anthony; Kelly, Daniel
The effect of concentration, cooling rate and cell seeding density on the initial mechanical properties of agarose hydrogels.
(2009)
Buckley, Conor; Robinson, Anthony; Kelly, Daniel
Abstract:
Agarose hydrogels are commonly used for cartilage tissue engineering studies and to provide a three dimensional environment to investigate cellular mechanobiology. Interpreting the results of such studies requires accurate quantification of the mechanical properties of the hydrogel. There is significant variation in the reported mechanical properties of agarose hydrogels, and little is reported on the influence of factors associated with mixing these hydrogels with cell suspensions on their initial mechanical properties. The objective of this study was to determine the influence of agarose concentration, the cooling rate during gelation, the thermal history following gelation and the cell seeding density on the initial mechanical properties of agarose hydrogels. The average ramp modulus of 2% agarose gel in tension was 24.9 kPa (?1.7, n=10), compared with 55.6 kPa (?0.5, n=10) in compression. The average tensile equilibrium modulus was 39.7 kPa (?5.7, n=6), significantly higher than...
http://hdl.handle.net/2262/29027
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The effect of cyclic hydrostatic pressure on the functional development of cartilaginous tissues engineered using bone marrow derived mesenchymal stem cells
(2011)
KELLY, DANIEL; BUCKLEY, CONOR
The effect of cyclic hydrostatic pressure on the functional development of cartilaginous tissues engineered using bone marrow derived mesenchymal stem cells
(2011)
KELLY, DANIEL; BUCKLEY, CONOR
Abstract:
Mechanical signals can play a key role in regulating the chondrogenic differentiation of Mesenchymal Stem Cells (MSCs). The objective of this study was to determine if the long-term application of cyclic hydrostatic pressure could be used to improve the functional properties of cartilaginous tissues engineered using bone marrow derived MSCs. MSCs were isolated from the femora of two porcine donors, expanded separately under identical conditions, and then suspended in cylindrical agarose hydrogels. Constructs from both donors were maintained in a chemically defined media supplemented with TGF-?3 for 42 days. TGF-?3 was removed from a subset of constructs from day 21 to 42. Loaded groups were subjected to 10 MPa of cyclic hydrostatic pressurization at 1 Hz for one hour/day, five days/week. Loading consisted either of continuous hydrostatic pressure (CHP) initiated at day 0, or delayed hydrostatic pressure (DHP) initiated at day 21. Free-swelling (FS) constructs were cultured in parall...
http://hdl.handle.net/2262/58657
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The effect of prosthesis design on vibration of the reconstructed ossicular chain: a comparative finite element analysis of four prostheses
(2003)
KELLY, DANIEL; PRENDERGAST, PATRICK JOHN
The effect of prosthesis design on vibration of the reconstructed ossicular chain: a comparative finite element analysis of four prostheses
(2003)
KELLY, DANIEL; PRENDERGAST, PATRICK JOHN
Abstract:
peer-reviewed
Hypothesis: We hypothesize that the differences in the bioacoustic performance of ossicular replacement prosthesis designs, and insertion positions, can be quantified using finite element analysis. Background: Many designs of prosthesis are available for middle ear surgery. Materials used, and the shape of the implants, differ widely. Advances in computer simulation technologies offer the possibility of replicating the in vivo behavior of the different prostheses. If this can be achieved, insight into the design attributes required for improved biofunctionality may be determined. Methods: Micro CT scanning and NMR imaging were used to obtain geometric information that was translated into a finite element model of the outer and middle ear. The forced frequency response across the hearing range of the normal middle ear was compared to the middle ear reconstructed with partial and total ossicular replacement prostheses (Xomed, Jacksonville, FL and Kurz, Dusslingen Ger...
http://hdl.handle.net/2262/29106
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The identification of articular cartilage and growth plate extracellular matrix-specific proteins supportive of either osteogenesis or stable chondrogenesis of stem cells
(2020)
Kelly, Daniel
The identification of articular cartilage and growth plate extracellular matrix-specific proteins supportive of either osteogenesis or stable chondrogenesis of stem cells
(2020)
Kelly, Daniel
Abstract:
Tissue-specific extracellular matrix (ECM) proteins can play a key role in regulating the fate of stem cells and can potentially be utilized for therapeutic applications. Realising this potential requires further characterization of the diversity of biomolecules present in tissue-specific ECMs and an evaluation of their role as regulatory cues for regenerative medicine applications. The goal of this study was to identify specific soluble factors within the ECM of articular cartilage (AC) and growth plate (GP) that may impart chondro-inductivity or osteo-inductivity respectively. To this end, the significantly different proteins between both matrisomes were searched against the STRING database platform, from which C-type lectin domain family-11 member-A (CLEC11A) and S100 calcium-binding protein-A10 (S100A10) were identified as potential candidates for supporting osteogenesis, and Gremlin-1 (GREM1) and TGF-? induced gene human clone-3 (?IGH3) were identified as potential candidates f...
http://hdl.handle.net/2262/94801
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The impacts of traditional and novel herbicide application methods on target plants, non-target plants and production in intensive grasslands
(2013)
POWER, EILEEN; STOUT, JANE; KELLY, DANIEL
The impacts of traditional and novel herbicide application methods on target plants, non-target plants and production in intensive grasslands
(2013)
POWER, EILEEN; STOUT, JANE; KELLY, DANIEL
http://hdl.handle.net/2262/75187
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The influence of construct scale on the composition and functional properties of cartilaginous tissues engineered using bone marrow-derived mesenchymal stem cells.
(2012)
Kelly, Daniel; Buckley, Conor
The influence of construct scale on the composition and functional properties of cartilaginous tissues engineered using bone marrow-derived mesenchymal stem cells.
(2012)
Kelly, Daniel; Buckley, Conor
Abstract:
Engineering cartilaginous tissue of a scale necessary to treat defects observed clinically is a well-documented challenge in the field of cartilage tissue engineering. The objective of this study was to determine how the composition and mechanical properties of cartilaginous tissues that are engineered by using bone marrow-derived mesenchymal stem cells (MSCs) depend on the scale of the construct. Porcine bone marrow-derived MSCs were encapsulated in agarose hydrogels, and constructs of different cylindrical geometries (?4?1.5 mm; ?5?3 mm; ?6?4.5 mm; ?8?4.5?mm) were fabricated and maintained in a chemically defined serum-free medium supplemented with transforming growth factor-?3 for 42 days. Total sulfated glycosaminoglycan (sGAG) accumulation by day 42 increased from 0.14% w/w to 0.88% w/w as the construct geometry increased from ?4?1.5 to ?8?4.5?mm, with collagen accumulation increasing from 0.31% w/w to 1.62% w/w. This led to an increase in the dynamic modulus from 90.81 to 327....
http://hdl.handle.net/2262/67190
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The influence of expansion rates on mandibular distraction osteogenesis: a computational analysis
(2007)
KELLY, DANIEL
The influence of expansion rates on mandibular distraction osteogenesis: a computational analysis
(2007)
KELLY, DANIEL
Abstract:
peer-reviewed
Mandibular distraction osteogenesis is a clinical procedure used for modifying the mandibular geometry when problems of dental overcrowding and arch shrinkage occur. The objective of this study is to use a computational model of tissue differentiation to examine the influence of the rate of distraction on bone re-growth within the fracture callus of a human mandible submitted to symphyseal distraction osteogenesis. A 3D model of the mandible is reconstructed from CT scan data and meshed into finite elements. Two different mastication loadings have been investigated: a `full? mastication load and a `reduced? mastication load where the action of each muscle was reduced by 70%. Four different distraction rates were analyzed: 0.6, 1.2, 2, and 3 mm/day, allowing a total displacement of 6 mm. In the early stages of the distraction process it is predicted that there is a decrease in the amount of bone tissue forming within the center of the fracture gap for all distractio...
http://hdl.handle.net/2262/29028
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The influence of plaque composition on underlying arterial wall stress during stent expansion: the case for lesion-specific stents
(2009)
KELLY, DANIEL; LALLY, CAITRIONA
The influence of plaque composition on underlying arterial wall stress during stent expansion: the case for lesion-specific stents
(2009)
KELLY, DANIEL; LALLY, CAITRIONA
Abstract:
Intracoronary stent implantation is a mechanical procedure, the success of which depends to a large degree on the mechanical properties of each vessel component involved and the pressure applied to the balloon. Little is know about the influence of plaque composition on arterial overstretching and the subsequent injury to the vessel wall following stenting. An idealised finite element model was developed to investigate the influence of both plaque type (hypercellular, hypocellular and calcified) and stent inflation pressures (9, 12 and 15 atm) on vessel and plaque stresses during the implantation of a balloon expandable coronary stent into an idealised stenosed artery. The plaque type was found to have a significant influence on the stresses induced within the artery during stenting. Higher stresses were predicted in the artery wall for cellular plaques, while the stiffer calcified plaque appeared to play a protective role by reducing the levels of stress within the arterial tissue ...
http://hdl.handle.net/2262/29029
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The influence of ventilation tube design on the magnitude of stress imposed at the implant/tympanic membrane interface
(2008)
KELLY, DANIEL; PRENDERGAST, PATRICK JOHN
The influence of ventilation tube design on the magnitude of stress imposed at the implant/tympanic membrane interface
(2008)
KELLY, DANIEL; PRENDERGAST, PATRICK JOHN
Abstract:
peer-reviewed
The design of ventilation tubes or grommets is thought to have a considerable influence on their performance. A computational model (finite element method) was used to investigate the significance of four design parameters of a commonly-used design of ventilation tube. The design parameters were: the length of the shaft, the diameter of the flanges, the thickness of the flanges, and the material type. A statistical analysis technique, known as a factorial analysis of variance, was used to examine the importance of the four design parameters on the dynamical behaviour of the middle-ear with the implant in situ and on the magnitude of stress induced at the implant/tympanic membrane interface. We predicted that the ventilation tube alters the frequency response of the middle ear; specifically the shaft length and the thickness of the flanges were found to have a significant effect upon the vibratory pattern at the umbo. A reduced length of tube and an increased size o...
http://hdl.handle.net/2262/29148
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The pericellular environment regulates cytoskeletal development and the differentiation of mesenchymal stem cells and determines their response to hydrostatic pressure.
(2013)
KELLY, DANIEL
The pericellular environment regulates cytoskeletal development and the differentiation of mesenchymal stem cells and determines their response to hydrostatic pressure.
(2013)
KELLY, DANIEL
Abstract:
The objective of this study was to examine the interplay between matrix stiffness and hydrostatic pressure (HP) in regulating chondrogenesis of mesenchymal stem cells (MSCs) and to further elucidate the mechanotransductive roles of integrins and the cytoskeleton. MSCs were seeded into 1 %, 2 % or 4 % agarose hydrogels and exposed to cyclic hydrostatic pressure. In a permissive media, the stiffer hydrogels supported an osteogenic phenotype, with little evidence of chondrogenesis observed regardless of the matrix stiffness. In a chondrogenic media, the stiffer gels suppressed cartilage matrix production and gene expression, with the addition of RGDS (an integrin blocker) found to return matrix synthesis to similar levels as in the softer gels. Vinculin, actin and vimentin organisation all adapted within stiffer hydrogels, with the addition of RGDS again preventing these changes. While the stiffer gels inhibited chondrogenesis, they enhanced mechanotransduction of HP. RGDS suppressed t...
http://hdl.handle.net/2262/66930
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The role of mechanical signals in regulating chondrogenesis and osteogenesis of mesenchymal stem cells
(2010)
KELLY, DANIEL
The role of mechanical signals in regulating chondrogenesis and osteogenesis of mesenchymal stem cells
(2010)
KELLY, DANIEL
Abstract:
It is becoming increasingly clear that mesenchymal stem cell (MSC) differentiation is regulated by mechanical signals. Mechanical forces generated intrinsically within the cell in response to its extracellular environment, and extrinsic mechanical signals imposed upon the cell by the extracellular environment, play a central role in determining MSC fate. This article reviews chondrogenesis and osteogenesis during skeletogenesis, and then considers the role of mechanics in regulating limb development and regenerative events such as fracture repair. However, observing skeletal changes under altered loading conditions can only partially explain the role of mechanics in controlling MSC differentiation. Increasingly, understanding how epigenetic factors, such as the mechanical environment, regulate stem cell fate is undertaken using tightly controlled in vitro models. Factors such as bioengineered surfaces, substrates, and bioreactor systems are used to control the mechanical forces impo...
http://hdl.handle.net/2262/41078
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Three-Dimensional Bioprinting of Polycaprolactone Reinforced Gene Activated Bioinks for Bone Tissue Engineering
(2017)
KELLY, DANIEL; DALY, ANDREW; NELSON SATHY, BINULAL; Cunniffe, Gr?inne M.; Gonzalez-Fern...
Three-Dimensional Bioprinting of Polycaprolactone Reinforced Gene Activated Bioinks for Bone Tissue Engineering
(2017)
KELLY, DANIEL; DALY, ANDREW; NELSON SATHY, BINULAL; Cunniffe, Gr?inne M.; Gonzalez-Fernandez, Tomas; Jeon, Oju; Alsberg, Eben
Abstract:
Regeneration of complex bone defects remains a significant clinical challenge. Multi-tool biofabrication has permitted the combination of various biomaterials to create multifaceted composites with tailorable mechanical properties and spatially controlled biological function. In this study we sought to use bioprinting to engineer nonviral gene activated constructs reinforced by polymeric micro-filaments. A gene activated bioink was developed using RGD-?-irradiated alginate and nano-hydroxyapatite (nHA) complexed to plasmid DNA (pDNA). This ink was combined with bone marrow-derived mesenchymal stem cells (MSCs) and then co-printed with a polycaprolactone supporting mesh to provide mechanical stability to the construct. Reporter genes were first used to demonstrate successful cell transfection using this system, with sustained expression of the transgene detected over 14 days postbioprinting. Delivery of a combination of therapeutic genes encoding for bone morphogenic protein and tran...
http://hdl.handle.net/2262/91780
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Tissue differentiation and bone regeneration in an osteotomized mandible: a computational analysis of the latency period
(2008)
KELLY, DANIEL; PRENDERGAST, PATRICK JOHN
Tissue differentiation and bone regeneration in an osteotomized mandible: a computational analysis of the latency period
(2008)
KELLY, DANIEL; PRENDERGAST, PATRICK JOHN
Abstract:
peer-reviewed
Mandibular symphyseal distraction osteogenesis is a common clinical procedure to modify the geometrical shape of the mandible for correcting problems of dental overcrowding and arch shrinkage. In spite of consolidated clinical use, questions remain concerning the optimal latency period and the influence of mastication loading on osteogenesis within the callus prior to the first distraction of the mandible. This work utilized a mechano-regulation model to assess bone regeneration within the callus of an osteotomized mandible. A 3D model of the mandible was reconstructed from CT scan data and meshed using poroelastic finite elements. The stimulus regulating tissue differentiation within the callus was hypothesized to be a function of the strain and fluid flow computed by the finite element model. This model was then used to analyse tissue differentiation during a fifteen day latency period, defined as the time between the day of the osteotomy and the day when the fir...
http://hdl.handle.net/2262/29147
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Tissue engineering scaled-up, anatomically shaped osteochondral constructs for joint resurfacing
(2015)
KELLY, DANIEL; BUCKLEY, CONOR; VINARDELL, TATIANA
Tissue engineering scaled-up, anatomically shaped osteochondral constructs for joint resurfacing
(2015)
KELLY, DANIEL; BUCKLEY, CONOR; VINARDELL, TATIANA
Abstract:
Arthroplasty is currently the only surgical procedure available to restore joint function following articular cartilage and bone degeneration associated with diseases such as osteoarthritis (OA). A potential alternative to this procedure would be to tissue-engineer a biological implant and use it to replace the entire diseased joint. The objective of this study was therefore to tissue-engineer a scaled-up, anatomically shaped, osteochondral construct suitable for partial or total resurfacing of a diseased joint. To this end it was first demonstrated that a bone marrow derived mesenchymal stem cell seeded alginate hydrogel could support endochondral bone formation in vivo within the osseous component of an osteochondral construct, and furthermore, that a phenotypically stable layer of articular cartilage could be engineered over this bony tissue using a co-culture of chondrocytes and mesenchymal stem cells. Co-culture was found to enhance the in vitro development of the chondral phas...
http://hdl.handle.net/2262/77352
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Tissue engineering whole bones through endochondral ossification: Regenerating the distal phalanx
(2015)
BUCKLEY, CONOR; KELLY, DANIEL
Tissue engineering whole bones through endochondral ossification: Regenerating the distal phalanx
(2015)
BUCKLEY, CONOR; KELLY, DANIEL
Abstract:
Novel strategies are urgently required to facilitate regeneration of entire bones lost due to trauma or disease. In this study, we present a novel framework for the regeneration of whole bones by tissue engineering anatomically shaped hypertrophic cartilaginous grafts in vitro that subsequently drive endochondral bone formation in vivo. To realize this, we first fabricated molds from digitized images to generate mesenchymal stem cell-laden alginate hydrogels in the shape of different bones (the temporomandibular joint [TMJ] condyle and the distal phalanx). These constructs could be stimulated in vitro to generate anatomically shaped hypertrophic cartilaginous tissues that had begun to calcify around their periphery. Constructs were then formed into the shape of the distal phalanx to create the hypertrophic precursor of the osseous component of an engineered long bone. A layer of cartilage engineered through self-assembly of chondrocytes served as the articular surface of these const...
http://hdl.handle.net/2262/77351
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Tissue-specific extracellular matrix scaffolds for the regeneration of spatially complex musculoskeletal tissues
(2019)
Kelly, Daniel; Dunne, Aisling; Cunniffe, Gr?inne M.; D?az-Payno, Pedro J.; Sheehy, Eamo...
Tissue-specific extracellular matrix scaffolds for the regeneration of spatially complex musculoskeletal tissues
(2019)
Kelly, Daniel; Dunne, Aisling; Cunniffe, Gr?inne M.; D?az-Payno, Pedro J.; Sheehy, Eamon J.; Critchley, Susan E.; Almeida, Henrique V.; Pitacco, Pierluca; Carroll, Simon F.; Mahon, Olwyn R.; Levingstone, Tanya J.; Moran, Conor J.; Brady, Robert T.; O'Brien, Fergal J.; Brama, Pieter A.J.
Abstract:
Biological scaffolds generated from tissue-derived extracellular matrix (ECM) are commonly used clinically for soft tissue regeneration. Such biomaterials can enhance tissue-specific differentiation of adult stem cells, suggesting that structuring different ECMs into multi-layered scaffolds can form the basis of new strategies for regenerating damaged interfacial tissues such as the osteochondral unit. In this study, mass spectrometry is used to demonstrate that growth plate (GP) and articular cartilage (AC) ECMs contain a unique array of regulatory proteins that may be particularly suited to bone and cartilage repair respectively. Applying a novel iterative freeze-drying method, porous bi-phasic scaffolds composed of GP ECM overlaid by AC ECM are fabricated, which are capable of spatially directing stem cell differentiation in vitro, promoting the development of graded tissues transitioning from calcified cartilage to hyaline-like cartilage. Evaluating repair 12-months post-implant...
http://hdl.handle.net/2262/91220
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Weakly Supervised Training of a Sign Language Recognition System Using Multiple Instance Learning Density Matrices
(2011)
Kelly, Daniel; McDonald, John; Markham, Charles
Weakly Supervised Training of a Sign Language Recognition System Using Multiple Instance Learning Density Matrices
(2011)
Kelly, Daniel; McDonald, John; Markham, Charles
Abstract:
A system for automatically training and spotting signs from continuous sign language sentences is presented. We propose a novel multiple instance learning density matrix algorithm which automatically extracts isolated signs from full sentences using the weak and noisy supervision of text translations. The automatically extracted isolated samples are then utilized to train our spatiotemporal gesture and hand posture classifiers. The experiments were carried out to evaluate the performance of the automatic sign extraction, hand posture classification, and spatiotemporal gesture spotting systems. We then carry out a full evaluation of our overall sign spotting system which was automatically trained on 30 different signs.
http://mural.maynoothuniversity.ie/8288/
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Wearable technology supported home rehabilitation services in rural areas: emphasis on monitoring structures and activities of functional capacity. Handbook
(2019)
Alamäki, Antti; Nevala, Elina; Barton, John; Condell, Joan; Munoz Esquivel. Karla; Nord...
Wearable technology supported home rehabilitation services in rural areas: emphasis on monitoring structures and activities of functional capacity. Handbook
(2019)
Alamäki, Antti; Nevala, Elina; Barton, John; Condell, Joan; Munoz Esquivel. Karla; Nordström, Anna; Tedesco, Salvatore; Kelly, Daniel; Heaney. David
Abstract:
The sustainability of modern healthcare systems is under threat. – the ageing of the population, the prevalence of chronic disease and a need to focus on wellness and preventative health management, in parallel with the treatment of disease, pose significant social and economic challenges. The current economic situation has made these issues more acute. Across Europe, healthcare expenditure is expected to rice to almost 16% of GDP by 2020. (OECD Health Statistics 2018). Coupled with a shortage of qualified personnel, European nations are facing increasing challenges in their ability to provide better-integrated and sustainable health and social services. The focus is currently shifting from treatment in a care center to prevention and health promotion outside the care institute. Improvements in technology offers one solution to innovate health care and meet demand at a low cost. New technology has the potential to decrease the need for hospitals and health stations (Lankila et al., ...
http://hdl.handle.net/10468/9771
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