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Journal of Tissue Engineering

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https://www.readbyqxmd.com/read/30202512/biomimetic-oyster-shell-replicated-topography-alters-the-behaviour-of-human-skeletal-stem-cells
#1
Shona J Waddell, María C de Andrés, Penelope M Tsimbouri, Enateri V Alakpa, Maggie Cusack, Matthew J Dalby, Richard Oc Oreffo
The regenerative potential of skeletal stem cells provides an attractive prospect to generate bone tissue needed for musculoskeletal reparation. A central issue remains efficacious, controlled cell differentiation strategies to aid progression of cell therapies to the clinic. The nacre surface from Pinctada maxima shells is known to enhance bone formation. However, to date, there is a paucity of information on the role of the topography of P. maxima surfaces, nacre and prism. To investigate this, nacre and prism topographical features were replicated onto polycaprolactone and skeletal stem cell behaviour on the surfaces studied...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30140422/jte-first-impact-factor-of-2-683
#2
EDITORIAL
Jonathan Knowles, Hae-Won Kim
No abstract text is available yet for this article.
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30128109/modelling-multi-scale-cell-tissue-interaction-of-tissue-engineered-muscle-constructs
#3
Ryo Torii, Rallia-Iliana Velliou, David Hodgson, Vivek Mudera
Expectation on engineered tissue substitute continues to grow, and for an effective development of a functional tissue and to control its quality, cellular mechanoresponse plays a key role. Although the mechanoresponse - in terms of cell-tissue interaction across scales - has been understood better in recent years, there are still technical limitations to quantitatively monitor the processes involved in the development of both native and engineered tissues. Computational (in silico) studies have been utilised to complement the experimental limitations and successfully applied to the prediction of tissue growth...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30116518/impact-of-surface-topography-and-coating-on-osteogenesis-and-bacterial-attachment-on-titanium-implants
#4
Laila Damiati, Marcus G Eales, Angela H Nobbs, Bo Su, Penelope M Tsimbouri, Manuel Salmeron-Sanchez, Matthew J Dalby
Titanium (Ti) plays a predominant role as the material of choice in orthopaedic and dental implants. Despite the majority of Ti implants having long-term success, premature failure due to unsuccessful osseointegration leading to aseptic loosening is still too common. Recently, surface topography modification and biological/non-biological coatings have been integrated into orthopaedic/dental implants in order to mimic the surrounding biological environment as well as reduce the inflammation/infection that may occur...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30093985/maintenance-of-chondrocyte-phenotype-during-expansion-on-plla-microtopographies
#5
Elisa Costa, Cristina González-García, José Luis Gómez Ribelles, Manuel Salmerón-Sánchez
Articular chondrocytes are difficult to grow, as they lose their characteristic phenotype following expansion on standard tissue culture plates. Here, we show that culturing them on surfaces of poly(L-lactic acid) of well-defined microtopography allows expansion and maintenance of characteristic chondrogenic markers. We investigated the dynamics of human chondrocyte dedifferentiation on the different poly(L-lactic acid) microtopographies by the expression of collagen type I, collagen type II and aggrecan at different culture times...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30083309/near-infrared-laser-mediated-drug-release-and-antibacterial-activity-of-gold-nanorod-sputtered-titania-nanotubes
#6
Kyoung-Suk Moon, Young-Bum Park, Ji-Myung Bae, Seunghan Oh
The infection control of implants is one of the hot issues in the field of medicine and dentistry. In this study, we prepared gold nanorod-sputtered titania nanotubes on titanium surface, which is the main component of implant material, and aimed to estimate the remote-controlled tetracycline release and resulting antibacterial effects of gold nanorod-sputtered titania nanotubes using near-infrared laser irradiation. Gold nanorods prepared by ion plasma sputtering (aspect ratio = 1:3) showed optical properties like those of chemically synthesized gold nanorods, exhibiting photothermal effects in the near-infrared region, as demonstrated using field-emission scanning electron microscopy, transmission electron microscopy, and diffuse ultraviolet-visible-near-infrared spectrophotometry...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30083308/antibacterial-surface-modification-of-titanium-implants-in-orthopaedics
#7
Wich Orapiriyakul, Peter S Young, Laila Damiati, Penelope M Tsimbouri
The use of biomaterials in orthopaedics for joint replacement, fracture healing and bone regeneration is a rapidly expanding field. Infection of these biomaterials is a major healthcare burden, leading to significant morbidity and mortality. Furthermore, the cost to healthcare systems is increasing dramatically. With advances in implant design and production, research has predominately focussed on osseointegration; however, modification of implant material, surface topography and chemistry can also provide antibacterial activity...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30046433/simultaneous-structuring-and-mineralization-of-silk-fibroin-scaffolds
#8
Michaela Rödel, Katrin Baumann, Jürgen Groll, Uwe Gbureck
Silk fibroin is commonly used as scaffold material for tissue engineering applications. In combination with a mineralization with different calcium phosphate phases, it can also be applied as material for bone regeneration. Here, we present a study which was performed to produce mineralized silk fibroin scaffolds with controlled macroporosity. In contrast to former studies, our approach focused on a simultaneous gelation and mineralization of silk fibroin by immersion of frozen silk fibroin monoliths in acidic calcium phosphate solutions...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30034770/osteoblast-response-to-disordered-nanotopography
#9
Christopher Allan, Andrew Ker, Carol-Anne Smith, Penelope M Tsimbouri, Juliana Borsoi, Stewart O'Neill, Nikolaj Gadegaard, Matthew J Dalby, R M Dominic Meek
The ability to influence stem cell differentiation is highly desirable as it would help us improve clinical outcomes for patients in various aspects. Many different techniques to achieve this have previously been investigated. This concise study, however, has focused on the topography on which cells grow. Current uncemented orthopaedic implants can fail if the implant fails to bind to the surrounding bone and, typically, forms a soft tissue interface which reduces direct bone contact. Here, we look at the effect of a previously reported nanotopography that utilises nanodisorder to influence mesenchymal stromal cell (as may be found in the bone marrow) differentiation towards bone and to also exert this effect on mature osteoblasts (as may be found in the bone)...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30034769/the-importance-of-factorial-design-in-tissue-engineering-and-biomaterials-science-optimisation-of-cell-seeding-efficiency-on-dermal-scaffolds-as-a-case-study
#10
Alexandra Levin, Vaibhav Sharma, Lilian Hook, Elena García-Gareta
This article presents a case study to show the usefulness and importance of using factorial design in tissue engineering and biomaterials science. We used a full factorial experimental design (2 × 2 × 2 × 3) to solve a routine query in every biomaterial research project: the optimisation of cell seeding efficiency for pre-clinical in vitro cell studies, the importance of which is often overlooked. In addition, tissue-engineered scaffolds can be cellularised with relevant cell type(s) to form implantable tissue constructs, where the cell seeding method must be reliable and robust...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29899969/bone-substitutes-a-review-of-their-characteristics-clinical-use-and-perspectives-for-large-bone-defects-management
#11
REVIEW
Gabriel Fernandez de Grado, Laetitia Keller, Ysia Idoux-Gillet, Quentin Wagner, Anne-Marie Musset, Nadia Benkirane-Jessel, Fabien Bornert, Damien Offner
Bone replacement might have been practiced for centuries with various materials of natural origin, but had rarely met success until the late 19th century. Nowadays, many different bone substitutes can be used. They can be either derived from biological products such as demineralized bone matrix, platelet-rich plasma, hydroxyapatite, adjunction of growth factors (like bone morphogenetic protein) or synthetic such as calcium sulfate, tri-calcium phosphate ceramics, bioactive glasses, or polymer-based substitutes...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29796242/improved-bioactivity-of-gummetal-%C3%A2-ti-59-nb-36-ta-2-zr-3-o-0-3-via-formation-of-nanostructured-surfaces
#12
Shiva Kamini Divakarla, Seiji Yamaguchi, Tadashi Kokubo, Dong-Wook Han, Jae Ho Lee, Wojciech Chrzanowski
The leading reason for implant revision surgery globally is lack of implant integration with surrounding bone. A new titanium alloy GUMMETAL® (Ti59 Nb36 Ta2 Zr3 O0.3 ) is currently used in biomedical devices and has a Young's modulus that is better matched to bone. The surface was subject to NaOH, CaCl2 , heat and water treatment (BioGum) after which the surfaces were evaluated using atomic force microscope, scanning electron microscope, X-ray diffractometer and elemental analysis using energy dispersive X-ray...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29785258/intra-articular-biomaterials-assisted-delivery-to-treat-temporomandibular-joint-disorders
#13
Khandmaa Dashnyam, Jung-Hwan Lee, Nandin Mandakhbayar, Guang-Zhen Jin, Hae-Hyoung Lee, Hae-Won Kim
The temporomandibular joint disorder, also known as myofascial pain syndrome, is considered one of the prevalent chronic pain diseases caused by muscle inflammation and cartilage degradation in head and neck, and thus influences even biopsychosocial conditions in a lifetime. There are several current treatment methodologies relieving inflammation and preventing degradation of the joint complex. One of the promising non-surgical treatment methods is an intra-articular injection of drugs such as corticosteroids, analgesics, and anti-depressants...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29780570/engineering-a-microcirculation-for-perfusion-control-of-ex-vivo-assembled-organ-systems-challenges-and-opportunities
#14
REVIEW
Pavan Kottamasu, Ira Herman
Donor organ shortage remains a clear problem for many end-stage organ patients around the world. The number of available donor organs pales in comparison with the number of patients in need of these organs. The field of tissue engineering proposes a plausible solution. Using stem cells, a patient's autologous cells, or allografted cells to seed-engineered scaffolds, tissue-engineered constructs can effectively supplement the donor pool and bypass other problems that arise when using donor organs, such as who receives the organ first and whether donor organ rejection may occur...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29774140/three-dimensional-printing-in-maxillofacial-surgery-hype-versus-reality
#15
Alaa Aldaadaa, Nazanin Owji, Jonathan Knowles
Three-dimensional printing technology is getting more attention recently, especially in the craniofacial region. This is a review of literature enlightening the materials that have been used to date and the application of such technology within the scope of maxillofacial surgery.
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29686829/the-potential-role-of-bioengineering-and-three-dimensional-printing-in-curing-global-corneal-blindness
#16
REVIEW
Parker E Ludwig, Trevor J Huff, Jorge M Zuniga
An insufficiency of accessible allograft tissue for corneal transplantation leaves many impaired by untreated corneal disease. There is promise in the field of regenerative medicine for the development of autologous corneal tissue grafts or collagen-based scaffolds. Another approach is to create a suitable corneal implant that meets the refractive needs of the cornea and is integrated into the surrounding tissue but does not attempt to perfectly mimic the native cornea on a cellular level. Materials that have been investigated for use in the latter concept include natural polymers such as gelatin, semisynthetic polymers like gelatin methacrylate, and synthetic polymers...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29662670/extended-bioreactor-conditioning-of-mononuclear-cell-seeded-heart-valve-scaffolds
#17
Mitchell VeDepo, Eric Buse, Rachael Quinn, Richard Hopkins, Gabriel Converse
The tissue-engineered heart valve may be the ideal valve replacement option but still must overcome challenges in leaflet recellularization. This study sought to investigate the potential for leaflet matrix restoration and repopulation following mononuclear cell seeding and extended periods of bioreactor conditioning. Human aortic heart valves were seeded with mononuclear cells and conditioned in a pulsatile bioreactor for 3 days, 3 weeks, or 6 weeks. The results of this study determined that a mononuclear cell population can be readily localized within the leaflet tissue in as little as 3 days...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29636893/a-3d-printed-passive-ultrasound-phase-interference-compensator-for-reduced-wave-degradation-in-cancellous-bone-an-experimental-study-in-replica-models
#18
Christian M Langton, Saeed M AlQahtani, Marie-Luise Wille
The current 'active' solution to overcome the impediment of ultrasound wave degradation associated with transit-time variation in complex tissue structures, such as the skull, is to vary the transmission delay of ultrasound pulses from individual transducer elements. This article considers a novel 'passive' solution in which constant transit time is achieved by propagating through an additional material layer positioned between the ultrasound transducer and the test sample. To test the concept, replica models based on four cancellous bone natural tissue samples and their corresponding passive ultrasound phase-interference compensator were 3D-printed...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29623184/emerging-properties-of-hydrogels-in-tissue-engineering
#19
Jung-Hwan Lee, Hae-Won Kim
Hydrogels are three-dimensional polymeric networks filled with water and mimic tissue environments. Therefore, they are considered optimal to deliver cells and engineer damaged tissues. The hydrogel networks have been significantly modified to endow biochemical functionality with adhesive ligands, growth factors, or degradable sites that are helpful to drive proper cell functions. Recently, some of the biophysical properties of hydrogels have emerged as key players in dictating cell fate. Beyond static stiffness, time-dependent stress/strain changes in the interaction with cells and the cell-mediated degradation and matrix synthesis have been demonstrated to shape cell status and tissue repair process...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29568478/toward-a-patient-specific-tissue-engineered-vascular-graft
#20
Cameron Best, Robert Strouse, Kan Hor, Victoria Pepper, Amy Tipton, John Kelly, Toshiharu Shinoka, Christopher Breuer
Integrating three-dimensional printing with the creation of tissue-engineered vascular grafts could provide a readily available, patient-specific, autologous tissue source that could significantly improve outcomes in newborns with congenital heart disease. Here, we present the recent case of a candidate for our tissue-engineered vascular graft clinical trial deemed ineligible due to complex anatomical requirements and consider the application of three-dimensional printing technologies for a patient-specific graft...
January 2018: Journal of Tissue Engineering
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