Abstract:
:Microstructure in terms of hierarchical assembly exists widely in mineralized biomaterials, fulfilling an important role in setting up their outstanding properties. The purpose of this study was to investigate the hierarchical assembly of enamel structure and functions, which are related to the unique characteristics of enamel. Human enamel taken from mature third molars was explored using scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and atomic force microscopy (AFM). Integrating the microscopic observations revealed the high complexity of the well-organized enamel structure in terms of hierarchical assembly. Based on these observations, seven hierarchical levels of the microstructure were proposed and described, using a scheme representing a complete spectrum of the organization in detail, covering a range from microscale to nanoscale: hydroxyapatite crystals (Level 1) at first form mineral nanofibrils (Level 2); the nanofibrils always align lengthways, aggregating into fibrils (Level 3) and further thicker fibres (Level 4); prism/interprism continua (Level 5) are then composed of them. At the microscale, prisms assemble into prism bands (Level 6), which present different arrangements across the thickness of the enamel layer (Level 7). Analysis of the enamel and bone hierarchical structure suggests similarities of scale distribution at each level. This study also aimed to understand further the structural-mechanical relations at each hierarchical level.
journal_name
J Tissue Eng Regen Medjournal_title
Journal of tissue engineering and regenerative medicineauthors
Cui FZ,Ge Jdoi
10.1002/term.21subject
Has Abstractpub_date
2007-05-01 00:00:00pages
185-91issue
3eissn
1932-6254issn
1932-7005journal_volume
1pub_type
杂志文章abstract::For the success of any biomaterial for tissue engineering, its mechanical properties and ability to support nutrient diffusion will be critical. Collagen scaffolds are ideal candidates, due to their ability to immerse cells in a biomimetic nanofibrous matrix. We have established O(2) diffusion coefficients through nat...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.402
更新日期:2012-01-01 00:00:00
abstract::Native articular cartilage is subjected to synovial fluid flow during normal joint function. Thus, it is believed that the morphogenesis of articular cartilage may be positively regulated by the application of similar stimulation in vitro. In the present study, the effect of fluid flow over the chondrogenic differenti...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.372
更新日期:2011-10-01 00:00:00
abstract::To create functional tissues having complex structures, bottom-up approaches to assembling small tissue modules into larger constructs have been emerging. Most of these approaches are based on chemical reactions or physical interactions at the interface between tissue modules. Here we report a biological assembly appr...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2008
更新日期:2015-09-01 00:00:00
abstract::Over the last few years, the generation of induced pluripotent stem cells (iPSCs) from human somatic cells has proved to be one of the most potentially useful discoveries in regenerative medicine. iPSCs are becoming an invaluable tool to study the pathology of different diseases and for drug screening. However, severa...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章,评审
doi:10.1002/term.2021
更新日期:2016-11-01 00:00:00
abstract::The present study aimed to investigate the effect of structure (design and porosity) on the matrix stiffness and osteogenic activity of stem cells cultured on poly(ester-urethane) (PEU) scaffolds. Different three-dimensional (3D) forms of scaffold were prepared from lysine-based PEU using traditional salt-leaching and...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.1848
更新日期:2015-08-01 00:00:00
abstract::Advanced frontal sinus disease non-responsive to conservative therapy has been treated with fat obliteration for decades. More recently, a wide variety of autogenous, allogenic or synthetic materials have also been used. In this study we present a treatment based on totally autogenous procedures and materials that was...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.534
更新日期:2013-06-01 00:00:00
abstract::Lipofilling or lipografting is a novel and promising treatment method for reduction or prevention of dermal scars after injury. Ample anecdotal evidence from case reports supports the scar-reducing properties of adipose tissue grafts. However, only a few properly controlled and designed clinical trials have been condu...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章,评审
doi:10.1002/term.2213
更新日期:2017-11-01 00:00:00
abstract::Keratin is an important protein used for wound healing and tissue recovery. In this study, keratin was first extracted from raw materials and chemically modified to obtain stable keratin (m-keratin). The raw and m-keratin were examined by Raman spectroscopy. The molecular weight of the m-keratin was analysed by SDS-PA...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.1653
更新日期:2015-09-01 00:00:00
abstract::Wound healing remains a major challenge in modern medicine. Bone marrow- (BM) and adipose tissue- (AT) derived mesenchymal stromal/stem cells (MSCs) are of great interest for tissue reconstruction due to their unique immunological properties and regenerative potential. The purpose of this study was to characterize BM ...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.1700
更新日期:2016-02-01 00:00:00
abstract::Cardiac stem cells (CSCs) represent a logical cell type to exploit as a regenerative treatment option for tissue damage accrued as a result of a myocardial infarction. However, the isolation and expansion of CSCs prior to cell transplantation is time consuming, costly and invasive, and the reliability of cell expansio...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2392
更新日期:2018-01-01 00:00:00
abstract::Nerve guides are currently being fabricated by blending a variety of biomaterials with different proteins. Adding proteins, which can support nerve repair and regeneration, optimizes the biological properties of a nerve guide. In our study we have blended glial cell line-derived nerve growth factor (GDNF) and laminin ...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.44
更新日期:2007-09-01 00:00:00
abstract::'Off-the-shelf' tissue-engineered skin alternatives for epidermal and dermal skin layers are available; however, no such alternative for the subdermal fat layer exists. Without this well-vascularized layer, skin graft take is variable and grafts may have reduced mobility, contracture and contour defects. In this study...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2025
更新日期:2017-04-01 00:00:00
abstract::The objective was to improve proliferation and chondrogenic potential of adipose stem cells (ASCs) by expansion on extracellular matrix (ECM) deposited by either ASCs or synovium-derived stem cells (SDSCs). ASCs isolated from porcine infrapatellar fat pad were separately expanded on conventional plastic flasks, ASC-de...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.505
更新日期:2013-01-01 00:00:00
abstract::Adipose tissue-derived microvascular fragments (ad-MVFs) are promising vascularization units for tissue engineering. In this study, we analysed the effects of normothermic (37°C) and subnormothermic (20°C) short-term cultivation on their viability and network forming capacity. Ad-MVFs from green fluorescent protein (G...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2774
更新日期:2019-02-01 00:00:00
abstract::Recellularization of ex vivo-derived scaffolds remains a significant hurdle primarily due to the scaffolds subcellular pore size that restricts initial cell seeding to the scaffolds periphery and inhibits migration over time. With the aim to improve cell migration, repopulation, and graft mechanics, the effects of a f...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.3015
更新日期:2020-03-01 00:00:00
abstract::Human bone marrow-derived mesenchymal stem cells (hBM-MSCs) have potential clinical utility in the treatment of a multitude of ailments and diseases, due to their relative ease of isolation from patients and their capacity to form many cell types. However, hBM-MSCs are sparse, and can only be isolated in very small qu...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.1515
更新日期:2014-03-01 00:00:00
abstract::Biomaterials and, especially, scaffolds may function as temporary extracellular matrix (ECM), mimicking in vivo environmental structures and facilitating cell growth and tissue regeneration. ECM is composed mostly of glycosaminoglycans (GAGs) and proteins, the ratio of GAGs, hyaluronic acid (HA):sulphated GAGs (sGAGs)...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.1883
更新日期:2016-12-01 00:00:00
abstract::Rapid vascular remodelling of damaged dermal tissue is required to heal burn wounds. Thymosin β4 (Tβ4) is a growth factor that has been shown to promote angiogenesis and dermal wound repair. However, the underlying mechanisms based on Tβ4 function have not yet been fully investigated. In the present study, we investig...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2028
更新日期:2017-04-01 00:00:00
abstract::Osteochondral defects of the ankle are common lesions affecting the talar cartilage and subchondral bone. Current treatments include cell-based therapies but are frequently associated with donor-site morbidity. Our objective is to characterize the posterior process of the talus (SP) and the os trigonum (OT) tissues an...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2092
更新日期:2017-07-01 00:00:00
abstract::Allogenic bone graft has been considered the gold standard in connection with bone graft material in revision joint arthroplasty. However, the lack of osteogenic potential and the risk of disease transmission are clinical challenges. The use of osteoinductive materials, such as demineralized bone matrix (DBM), alone o...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.1685
更新日期:2016-03-01 00:00:00
abstract::Glaucoma, a leading cause of blindness, is characterized by an increase in intraocular pressure, which is largely determined by resistance to aqueous humour outflow through the trabecular meshwork (TM). In glaucoma, the cellularity of the TM is decreased, and, as a result, stem cell therapies for the TM represent a po...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2488
更新日期:2018-03-01 00:00:00
abstract::Major congenital malformations affect up to 3% of newborns. Infants with prenatally diagnosed soft tissue defects should benefit from having autologous tissue readily available for surgical implantation in the perinatal period. In this study, we investigate fetal subcutaneous cells as cellular source for tissue engine...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2639
更新日期:2018-05-01 00:00:00
abstract::The creation of vascularized engineered tissues of clinically relevant size is a major challenge of tissue engineering. While it is known that endothelial and mural vascular cells are integral to the formation of stable blood vessels, the specific cell types and optimal conditions for engineered vascular networks are ...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.231
更新日期:2010-03-01 00:00:00
abstract::The regeneration and establishment of osseointegration within oral peri-implant bone defects remains a clinical challenge. Bone tissue engineering (BTE) is emerging as a promising alternative to autogenous and/or biomaterial-based bone grafting. The objective of this systematic review was to answer the focused questio...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1002/term.2412
更新日期:2018-01-01 00:00:00
abstract::In orthopaedic medicine, connective tissues are often affected by traumatic or degenerative injuries, and surgical intervention is required. Rotator cuff tears are a common cause of shoulder pain and disability among adults. The development of graft materials for bridging the gap between tendon and bone after chronic ...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2868
更新日期:2019-07-01 00:00:00
abstract::There has been increased interest in co-cultures of stem cells and chondrocytes for cartilage tissue engineering as there are the limitations associated with using either cell type alone. Drawbacks associated with the use of chondrocytes include the limited numbers of cells available for isolation from damaged or dise...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2608
更新日期:2018-04-01 00:00:00
abstract::Aerosol-based cell therapy has emerged as a novel and promising therapeutic strategy for treating lung diseases. The goal of this study was to determine the safety and efficacy of aerosol-based airway epithelial cell (AEC) delivery in the setting of acute lung injury induced by tracheal brushing in rabbit. Twenty-four...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2421
更新日期:2018-02-01 00:00:00
abstract::Bone extracellular matrix (ECM) is composed of mineralized collagen fibrils which support biological apatite nucleation that participates in bone outstanding properties. Understanding and mimicking bone morphological and physiological parameters at a biological scale is a major challenge in tissue engineering scaffold...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.499
更新日期:2012-11-01 00:00:00
abstract::Low immunogenicity and high repopulation capacity are crucial determinants for the functional and structural performance of acellular cardiovascular implants. The present study evaluates a detergent-free, non-proteolytic, actin-disassembling regimen (BIO) for decellularization of heart valve and vessel grafts, particu...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.2271
更新日期:2017-12-01 00:00:00
abstract::The objective of this study was to test the hypothesis that platelet-rich plasma (PRP) pretreatment on a poly-lactic-co-glycolic acid (PLGA) mesh scaffold enhances the healing capacity of the meniscus with human chondrocyte-seeded scaffolds in vivo, even when the seeded number of cells was reduced from 10 million to o...
journal_title:Journal of tissue engineering and regenerative medicine
pub_type: 杂志文章
doi:10.1002/term.1938
更新日期:2017-02-01 00:00:00