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Niazov-Elkan A, Weissman H, Shimoni E, Sui X, Feldman Y, Wagner HD, Rybtchinski B. Emergent Self-Assembly of Sustainable Plastics Based on Amino Acid Nanocrystals. ACS NANO 2023; 17:20962-20967. [PMID: 37871004 PMCID: PMC10655173 DOI: 10.1021/acsnano.3c02528] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 10/25/2023]
Abstract
Development of biodegradable plastic materials is of primary importance in view of acute environmental and health problems associated with the accumulation of plastic waste. We fabricated a biodegradable composite material based on hydroxyethyl cellulose polymer and tyrosine nanocrystals, which demonstrates enhanced strength and ductility (typically mutually excluding properties), superior to most biodegradable plastics. This emergent behavior results from an assembly pattern that leads to a uniform nanoscale morphology and strong interactions between the components. Water-resistant biodegradable composites encapsulated with hydrophobic polycaprolactone as a protection layer were also fabricated. Self-assembly of robust sustainable plastics with emergent properties by using readily available building blocks provides a valuable toolbox for creating sustainable materials.
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Affiliation(s)
- Angelica Niazov-Elkan
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Haim Weissman
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Eyal Shimoni
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - XiaoMeng Sui
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Yishay Feldman
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - H. Daniel Wagner
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Boris Rybtchinski
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
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2
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Wang B, Nguyen N, Kang M, Srirangapatanam S, Connelly S, Souza R, Ho SP. Contact ratio and adaptations in the maxillary and mandibular dentoalveolar joints in rats and human clinical analogs. J Mech Behav Biomed Mater 2022; 136:105485. [PMID: 36209587 DOI: 10.1016/j.jmbbm.2022.105485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 11/19/2022]
Abstract
Spatial maps of function-based contact areas and resulting mechanical strains in bones of intact fibrous joints in preclinical small-scale animal models are limited. Functional imaging in situ on intact dentoalveolar fibrous joints (DAJs) in hemimandibles and hemimaxillae harvested from 10 male Sprague-Dawley rats (N = 5 at 12 weeks, N = 5 at 20 weeks) was performed in this study. Physical features including bone volume fraction (BVF), bone pore diameter and pore density, and cementum fraction (CF) of the molars in the maxillary and mandibular joints were evaluated. Biomechanical testing in situ provided estimates of joint stiffness, changes in periodontal ligament spaces (PDL-space) between the molar and bony socket, and thereby localization of contact area in the respective joints. Contact area localization revealed mechanically stressed interradicular and apical regions in the joints. These anatomy-specific contact stresses in maxillary and mandibular joints were correlated with the physical features and resulting strains in interradicular and bony socket compartments. The mandibular joint spaces, in general, were higher than maxillary, and this trend was consistent with age (younger loaded: Mn - 134 ± 55 μm, Mx - 110 ± 47 μm; older loaded: Mn - 122 ± 49 μm, Mx - 105 ± 48 μm). However, a significant decrease (P < 0.05) in mandibular and maxillary joint spaces with age (younger unloaded: Mn - 147 ± 51 μm; Mx - 125 ± 42 μm; older unloaded: Mn - 134 ± 46 μm; Mx - 116 ± 44 μm) was observed. The bone volume fraction (BVF) of mandibular interradicular bone (IR bone) increased significantly with age (P < 0.05) with the percent porosity of coronal mandibular bone lower than its maxillary counterpart. The contact ratio (contact area to total surface area) of maxillary teeth was significantly greater (P < 0.05) than mandibular teeth; both maxillary interradicular and apical contact ratios (IR bone: 41%, 56%; Apical bone: 4%, 12%) increased with age, and were higher than the mandibular (IR bone: 19%, 44%; Apical bone: 1%, 4%) counterpart. Resulting higher but uniform strains in maxillary bone contrasted with lower but higher variance in mandibular strains at a younger age. Anatomy-specific colocalization of physical properties and functional strains in bone provided insights into form-guided adaptive dominance of the maxilla compared to material property-guided adaptive dominance of the mandible. These age-related trends from the preclinical animal model paralleled with age- and tooth position-specific variabilities in mandibular craniofacial bones of adolescent and adult patients following orthodontic treatment.
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Affiliation(s)
- Bo Wang
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116023, PR China; International Research Center for Computational Mechanics, Dalian University of Technology, Dalian, 116023, PR China; Ningbo Institute of Dalian University of Technology, Ningbo, 315016, PR China; DUT-BSU Joint Institute, Dalian University of Technology, 116023, PR China; Division of Preclinical Education, Biomaterials & Engineering, Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, CA 94143, USA
| | - Nam Nguyen
- Division of Preclinical Education, Biomaterials & Engineering, Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, CA 94143, USA
| | - Misun Kang
- Division of Preclinical Education, Biomaterials & Engineering, Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, CA 94143, USA
| | | | - Stephen Connelly
- Division of Oral Surgery, Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, CA, 94143, USA
| | - Richard Souza
- Departments of Physical Therapy and Rehabilitation Science, Radiology and Biomedical Orthopaedic Surgery, School of Medicine, University of California San Francisco, CA, 94143, USA
| | - Sunita P Ho
- Division of Preclinical Education, Biomaterials & Engineering, Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, CA 94143, USA.
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3
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Buss DJ, Reznikov N, McKee MD. Crossfibrillar mineral tessellation in normal and Hyp mouse bone as revealed by 3D FIB-SEM microscopy. J Struct Biol 2020; 212:107603. [DOI: 10.1016/j.jsb.2020.107603] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 02/05/2023]
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4
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Yao J, Fang W, Guo J, Jiao D, Chen S, Ifuku S, Wang H, Walther A. Highly Mineralized Biomimetic Polysaccharide Nanofiber Materials Using Enzymatic Mineralization. Biomacromolecules 2020; 21:2176-2186. [PMID: 32286801 DOI: 10.1021/acs.biomac.0c00160] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Many biological high-performance composites, such as bone, antler, and crustacean cuticles, are composed of densely mineralized and ordered nanofiber materials. The mimicry of even simplistic bioinspired structures, i.e., of densely and homogeneously mineralized nanofibrillar materials with controllable mechanical performance, continues to be a grand challenge. Here, using alkaline phosphatase as an enzymatic catalyst, we demonstrate the dense, homogeneous, and spatially controlled mineralization of calcium phosphate nanostructures within networks of anionically charged cellulose nanofibrils (CNFs) and cationically charged chitin nanofibrils (ChNFs)-both emerging biobased nanoscale building blocks for sustainable high-performance materials design. Our study reveals that anionic CNFs lead to a more homogeneous nanoscale mineralization with very high mineral contents up to ca. 70 wt % with a transition from amorphous to crystalline deposits, while cationic ChNFs yield rod-like crystalline morphologies. The bone-inspired CNF bulk films exhibit a significantly increased stiffness, maintain good flexibility and translucency, and have a significant gain in wet state mechanical properties. The mechanical properties can be tuned both by the enzyme concentration and the mineralization time. Moreover, we also show a spatial control of the mineralization using kinetically controlled substrate uptake in a dialysis reactor, and by spatially selectively incorporating the enzyme into 2D printed filament patterns. The strategy highlights possibilities for spatial encoding of enzymes in tailored structures and patterns and programmed mineralization processes, promoting the potential application of mineralized CNF biomaterials with complex gradients for bone substitutes and tissue regeneration in general.
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Affiliation(s)
- Jingjing Yao
- A3BMS Lab-Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany.,Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany.,Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany.,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Wenwen Fang
- A3BMS Lab-Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany.,Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany.,Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Jiaqi Guo
- A3BMS Lab-Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany.,Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany.,Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Dejin Jiao
- A3BMS Lab-Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany.,Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany.,Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Shiyan Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Shinsuke Ifuku
- Graduate School of Engineering, Tottori University, 101-4 Koyama-cho Minami, Tottori 680-8502, Japan
| | - Huaping Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Andreas Walther
- A3BMS Lab-Active, Adaptive and Autonomous Bioinspired Materials, Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Straße 31, 79104 Freiburg, Germany.,Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany.,Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany.,Freiburg Institute for Advanced Studies (FRIAS), University of Freiburg, Albertstraße 19, 79104 Freiburg, Germany.,Cluster of Excellence livMatS @ FIT-Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
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5
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Xi L, De Falco P, Barbieri E, Karunaratne A, Bentley L, Esapa CT, Terrill NJ, Brown SDM, Cox RD, Davis GR, Pugno NM, Thakker RV, Gupta HS. Bone matrix development in steroid-induced osteoporosis is associated with a consistently reduced fibrillar stiffness linked to altered bone mineral quality. Acta Biomater 2018; 76:295-307. [PMID: 29902593 PMCID: PMC6084282 DOI: 10.1016/j.actbio.2018.05.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/14/2018] [Accepted: 05/31/2018] [Indexed: 01/24/2023]
Abstract
Glucocorticoid-induced osteoporosis (GIOP) is a major secondary form of osteoporosis, with the fracture risk significantly elevated - at similar levels of bone mineral density - in patients taking glucocorticoids compared with non-users. The adverse bone structural changes at multiple hierarchical levels in GIOP, and their mechanistic consequences leading to reduced load-bearing capacity, are not clearly understood. Here we combine experimental X-ray nanoscale mechanical imaging with analytical modelling of the bone matrix mechanics to determine mechanisms causing bone material quality deterioration during development of GIOP. In situ synchrotron small-angle X-ray diffraction combined with tensile testing was used to measure nanoscale deformation mechanisms in a murine model of GIOP, due to a corticotrophin-releasing hormone promoter mutation, at multiple ages (8-, 12-, 24- and 36 weeks), complemented by quantitative micro-computed tomography and backscattered electron imaging to determine mineral concentrations. We develop a two-level hierarchical model of the bone matrix (mineralized fibril and lamella) to predict fibrillar mechanical response as a function of architectural parameters of the mineralized matrix. The fibrillar elastic modulus of GIOP-bone is lower than healthy bone throughout development, and nearly constant in time, in contrast to the progressively increasing stiffness in healthy bone. The lower mineral platelet aspect ratio value for GIOP compared to healthy bone in the multiscale model can explain the fibrillar deformation. Consistent with this result, independent measurement of mineral platelet lengths from wide-angle X-ray diffraction finds a shorter mineral platelet length in GIOP. Our results show how lowered mineralization combined with altered mineral nanostructure in GIOP leads to lowered mechanical competence. SIGNIFICANCE STATEMENT Increased fragility in musculoskeletal disorders like osteoporosis are believed to arise due to alterations in bone structure at multiple length-scales from the organ down to the supramolecular-level, where collagen molecules and elongated mineral nanoparticles form stiff fibrils. However, the nature of these molecular-level alterations are not known. Here we used X-ray scattering to determine both how bone fibrils deform in secondary osteoporosis, as well as how the fibril orientation and mineral nanoparticle structure changes. We found that osteoporotic fibrils become less stiff both because the mineral nanoparticles became shorter and less efficient at transferring load from collagen, and because the fibrils are more randomly oriented. These results will help in the design of new composite musculoskeletal implants for bone repair.
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Affiliation(s)
- L Xi
- School of Engineering and Material Sciences, Queen Mary University of London, London E1 4NS, UK; Department of Nuclear Engineering, North Carolina State University, Raleigh, NC 27607, USA
| | - P De Falco
- School of Engineering and Material Sciences, Queen Mary University of London, London E1 4NS, UK; Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam-Golm, Germany.
| | - E Barbieri
- School of Engineering and Material Sciences, Queen Mary University of London, London E1 4NS, UK; Department of Mathematical Science and Advanced Technology (MAT), Yokohama Institute for Earth Sciences (YES) 3173-25, Showa-machi, Kanazawa-ku, Yokohama-city, Japan.
| | - A Karunaratne
- Department of Mechanical Engineering, University of Moratuwa, Sri Lanka
| | - L Bentley
- MRC Mammalian Genetics Unit and Mary Lyon Centre, MRC Harwell, Harwell Science and Innovation Campus, OX11 0RD, UK.
| | - C T Esapa
- MRC Mammalian Genetics Unit and Mary Lyon Centre, MRC Harwell, Harwell Science and Innovation Campus, OX11 0RD, UK; Academic Endocrine Unit, Nuffield Department of Clinical Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Headington, Oxford OX3 7JL, UK.
| | - N J Terrill
- Beamline I22, Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Chilton, Didcot, Oxfordshire OX11 0DE, UK.
| | - S D M Brown
- MRC Mammalian Genetics Unit and Mary Lyon Centre, MRC Harwell, Harwell Science and Innovation Campus, OX11 0RD, UK.
| | - R D Cox
- MRC Mammalian Genetics Unit and Mary Lyon Centre, MRC Harwell, Harwell Science and Innovation Campus, OX11 0RD, UK.
| | - G R Davis
- Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Institute of Dentistry, E1 2AD, UK.
| | - N M Pugno
- Laboratory of Bio-Inspired & Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano, 77, 38123 Trento, Italy; School of Engineering and Material Sciences, Queen Mary University of London, London E1 4NS, UK; Ket Lab, Edoardo Amaldi Foundation, Italian Space Agency, Via del Politecnico snc, 00133 Rome, Italy.
| | - R V Thakker
- MRC Mammalian Genetics Unit and Mary Lyon Centre, MRC Harwell, Harwell Science and Innovation Campus, OX11 0RD, UK; Academic Endocrine Unit, Nuffield Department of Clinical Medicine, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Churchill Hospital, Headington, Oxford OX3 7JL, UK.
| | - H S Gupta
- School of Engineering and Material Sciences, Queen Mary University of London, London E1 4NS, UK.
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6
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Vercher-Martínez A, Giner E, Arango C, Javier Fuenmayor F. Influence of the mineral staggering on the elastic properties of the mineralized collagen fibril in lamellar bone. J Mech Behav Biomed Mater 2015; 42:243-56. [DOI: 10.1016/j.jmbbm.2014.11.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/19/2014] [Accepted: 11/22/2014] [Indexed: 01/30/2023]
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7
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Aido M, Kerschnitzki M, Hoerth R, Checa S, Spevak L, Boskey AL, Fratzl P, Duda GN, Wagermaier W, Willie BM. Effect of in vivo loading on bone composition varies with animal age. Exp Gerontol 2015; 63:48-58. [PMID: 25639943 PMCID: PMC4352172 DOI: 10.1016/j.exger.2015.01.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 12/23/2014] [Accepted: 01/28/2015] [Indexed: 01/07/2023]
Abstract
Loading can increase bone mass and size and this response is reduced
with aging. It is unclear, however how loading affects bone mineral and matrix
properties. Fourier Transform Infrared Imaging and high resolution synchrotron
scanning small angle X-ray scattering were used to study how bone’s
microscale and nanoscale compositional properties were altered in the tibial
midshaft of young, adult, and elderly female C57Bl/6J mice after two weeks of
controlled in vivo compressive loading in comparison to
physiological loading. The effect of controlled loading on bone composition
varied with animal age, since it predominantly influenced the bone composition
of elderly mice. Interestingly, controlled loading led to enhanced collagen
maturity in elderly mice. In addition, although the rate of bone formation was
increased by controlled loading based on histomorphometry, the newly formed
tissue had similar material quality to new bone tissue formed during
physiological loading. Similar to previous studies, our data showed that bone
composition was animal and tissue age dependent during physiological loading.
The findings that the new tissue formed in response to controlled loading and
physiological loading had similar bone composition and that controlled loading
enhanced bone composition in elderly mice further supports the use of physical
activity as a noninvasive treatment to enhance bone quality as well as maintain
bone mass in individuals suffering from age-related bone loss.
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Affiliation(s)
- Marta Aido
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Germany; Berlin-Brandenburg School for Regenerative Therapies (BSRT), Berlin, Germany
| | - Michael Kerschnitzki
- Berlin-Brandenburg School for Regenerative Therapies (BSRT), Berlin, Germany; Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Rebecca Hoerth
- Berlin-Brandenburg School for Regenerative Therapies (BSRT), Berlin, Germany; Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Sara Checa
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Germany
| | | | | | - Peter Fratzl
- Berlin-Brandenburg School for Regenerative Therapies (BSRT), Berlin, Germany; Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Georg N Duda
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Germany; Berlin-Brandenburg School for Regenerative Therapies (BSRT), Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany
| | | | - Bettina M Willie
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Germany.
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8
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Bar-On B, Wagner HD. Structural motifs and elastic properties of hierarchical biological tissues - a review. J Struct Biol 2013; 183:149-64. [PMID: 23707543 DOI: 10.1016/j.jsb.2013.05.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Revised: 05/04/2013] [Accepted: 05/15/2013] [Indexed: 11/26/2022]
Abstract
Recent progress made in the field of hierarchical biological materials is reviewed with an emphasis on the staggering characteristics at the smaller structural scale of a number of tissues. We show by means of selected examples that the small-scale architecture, and particularly the degree of staggering and overlap, plays a critical role in the macroscopic elastic behavior of those tissues.
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Affiliation(s)
- Benny Bar-On
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel
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