301
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Müller-Herrmann S, Scheibel T. Enzymatic Degradation of Films, Particles, and Nonwoven Meshes Made of a Recombinant Spider Silk Protein. ACS Biomater Sci Eng 2015; 1:247-259. [DOI: 10.1021/ab500147u] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Susanne Müller-Herrmann
- Lehrstuhl
Biomaterialien, Universität Bayreuth, Universitätsstraße 30, D-95447 Bayreuth, Germany
| | - Thomas Scheibel
- Lehrstuhl
Biomaterialien, Universität Bayreuth, Universitätsstraße 30, D-95447 Bayreuth, Germany
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302
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Ferreira AV, Volkov V, Abreu AS, Azoia N, Botelho CM, Cavaco‐Paulo A. Orange IV stabilizes silk fibroin microemulsions. Eng Life Sci 2015. [DOI: 10.1002/elsc.201400190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Ana V. Ferreira
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Vadim Volkov
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Ana S. Abreu
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Nuno Azoia
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Cláudia M. Botelho
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Artur Cavaco‐Paulo
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
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303
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Mauney JR, Adam RM. Dynamic reciprocity in cell-scaffold interactions. Adv Drug Deliv Rev 2015; 82-83:77-85. [PMID: 25453262 DOI: 10.1016/j.addr.2014.10.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 09/07/2014] [Accepted: 10/15/2014] [Indexed: 12/14/2022]
Abstract
Tissue engineering in urology has shown considerable promise. However, there is still much to understand, particularly regarding the interactions between scaffolds and their host environment, how these interactions regulate regeneration and how they may be enhanced for optimal tissue repair. In this review, we discuss the concept of dynamic reciprocity as applied to tissue engineering, i.e. how bi-directional signaling between implanted scaffolds and host tissues such as the bladder drives the process of constructive remodeling to ensure successful graft integration and tissue repair. The impact of scaffold content and configuration, the contribution of endogenous and exogenous bioactive factors, the influence of the host immune response and the functional interaction with mechanical stimulation are all considered. In addition, the temporal relationships of host tissue ingrowth, bioactive factor mobilization, scaffold degradation and immune cell infiltration, as well as the reciprocal signaling between discrete cell types and scaffolds are discussed. Improved understanding of these aspects of tissue repair will identify opportunities for optimization of repair that could be exploited to enhance regenerative medicine strategies for urology in future studies.
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304
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Xu Z, Shi L, Yang M, Zhang H, Zhu L. Fabrication of a novel blended membrane with chitosan and silk microfibers for wound healing: characterization, in vitro and in vivo studies. J Mater Chem B 2015; 3:3634-3642. [DOI: 10.1039/c5tb00226e] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A novel type of chitosan/silk microfibers blended membrane was fabricated, which could significantly accelerate wound healing efficiency.
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Affiliation(s)
- Zongpu Xu
- Institute of Applied Bioresource Research
- College of Animal Science
- Zhejiang University
- Hangzhou 310058
- PR China
| | - Liyang Shi
- Institute of Applied Bioresource Research
- College of Animal Science
- Zhejiang University
- Hangzhou 310058
- PR China
| | - Mingying Yang
- Institute of Applied Bioresource Research
- College of Animal Science
- Zhejiang University
- Hangzhou 310058
- PR China
| | - Haiping Zhang
- Institute of Applied Bioresource Research
- College of Animal Science
- Zhejiang University
- Hangzhou 310058
- PR China
| | - Liangjun Zhu
- Institute of Applied Bioresource Research
- College of Animal Science
- Zhejiang University
- Hangzhou 310058
- PR China
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305
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Sheykhhasan M, Qomi RT, Kalhor N, Mehdizadeh M, Ghiasi M. Evaluation of the ability of natural and synthetic scaffolds in providing an appropriate environment for growth and chondrogenic differentiation of adipose-derived mesenchymal stem cells. Indian J Orthop 2015; 49:561-8. [PMID: 26538764 PMCID: PMC4598549 DOI: 10.4103/0019-5413.164043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Although progenitor cells have been observed in articular cartilage, this part has a limited ability to repair due to a lack of blood supply. Formerly, tissue engineering was mainly based on collecting chondrocytes from the joint surface, culturing them on resorbable scaffolds such as poly D, L-lactic glycolic acid (PLGA) and then autologous transplantation. In recent times, due to difficulties in collecting chondrocytes, most of the researchers are focused on stem cells for producing these cells. Among the important factors in this approach, is using appropriate scaffolds with good mechanical and biological properties to provide optimal environment for growth and development of stem cells. In this study, we evaluated the potential of fibrin glue, PLGA and alginate scaffolds in providing a suitable environment for growth and chondrogenic differentiation of mesenchymal stem cells (MSCs) in the presence of transforming growth factor-β3. MATERIALS AND METHODS Fibrin glue, PLGA and alginate scaffolds were prepared and MSCs were isolated from human adipose tissue. Cells were cultured separately on the scaffolds and 2 weeks after differentiation, chondrogenic genes, cell proliferation ability and morphology in each scaffold were evaluated using real time-polymerase chain reaction, MTT chondrogenic assay and histological examination, respectively. RESULTS Proliferation of differentiated adipose tissue derived mesenchymal stem cells (AD-MSCs) to chondrogenic cells in Fibrin glue were significantly higher than in other scaffolds. Also, Fibrin glue caused the highest expression of chondrogenic genes compared to the other scaffolds. Histological examination revealed that the pores of the Fibrin glue scaffolds were filled with cells uniformly distributed. CONCLUSION According to the results of the study, it can be concluded that natural scaffolds such as fibrin can be used as an appropriate environment for cartilage differentiation.
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Affiliation(s)
- Mohsen Sheykhhasan
- Department of Stem Cell, The Academic Center for Education, Culture and Research, Qom Branch, Qom, Iran
| | - Reza Tabatabaei Qomi
- Department of Stem Cell, The Academic Center for Education, Culture and Research, Qom Branch, Qom, Iran
| | - Naser Kalhor
- Department of Stem Cell, The Academic Center for Education, Culture and Research, Qom Branch, Qom, Iran
| | - Mohammad Mehdizadeh
- Department of Oral and Maxillofacial Surgery, Dental Faculty, Babol Medical Science University, Babol, Iran
| | - Mahdieh Ghiasi
- Department of Stem Cell, The Academic Center for Education, Culture and Research, Qom Branch, Qom, Iran,Address for correspondence: Dr. Mahdieh Ghiasi, Department of Stem Cell, The Academic Center for Education, Culture and Research, Qom Branch, Qom, Iran. E-mail:
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306
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Rostam HM, Singh S, Vrana NE, Alexander MR, Ghaemmaghami AM. Impact of surface chemistry and topography on the function of antigen presenting cells. Biomater Sci 2015. [DOI: 10.1039/c4bm00375f] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The impact of biomaterial surface topography and chemistry on antigen presenting cells’ phenotype and function.
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Affiliation(s)
- H. M. Rostam
- Immunology and Tissue Modelling Group
- School of Life Science
- University of Nottingham
- Queen's Medical Centre
- Nottingham
| | - S. Singh
- Immunology and Tissue Modelling Group
- School of Life Science
- University of Nottingham
- Queen's Medical Centre
- Nottingham
| | - N. E. Vrana
- Université de Strasbourg
- Faculté de Chirurgie Dentaire
- France
- Protip SAS
- Strasbourg
| | - M. R. Alexander
- Interface and Surface Analysis Centre
- School of Pharmacy
- University of Nottingham
- UK
| | - A. M. Ghaemmaghami
- Immunology and Tissue Modelling Group
- School of Life Science
- University of Nottingham
- Queen's Medical Centre
- Nottingham
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307
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Kudasheva A, Hirota Y, Kawahara Y, Ito A. Application of Biopolymers in Air Dehumidification Membranes. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2015. [DOI: 10.1252/jcej.15we049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alina Kudasheva
- Department of Chemical Engineering, Tokyo Institute of Technology
| | - Yuichiro Hirota
- Department of Chemical Engineering, Tokyo Institute of Technology
| | - Yutaka Kawahara
- Division of Environmental Engineering Science, Gunma University
| | - Akira Ito
- Department of Chemical Engineering, Tokyo Institute of Technology
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308
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You R, Xu Y, Liu Y, Li X, Li M. Comparison of the
in vitro
and
in vivo
degradations of silk fibroin scaffolds from mulberry and nonmulberry silkworms. Biomed Mater 2014; 10:015003. [DOI: 10.1088/1748-6041/10/1/015003] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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309
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Kim SY, Wong AHM, Abou Neel EA, Chrzanowski W, Chan HK. The future perspectives of natural materials for pulmonary drug delivery and lung tissue engineering. Expert Opin Drug Deliv 2014; 12:869-87. [DOI: 10.1517/17425247.2015.993314] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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310
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Kim JY, Yang BE, Ahn JH, Park SO, Shim HW. Comparable efficacy of silk fibroin with the collagen membranes for guided bone regeneration in rat calvarial defects. J Adv Prosthodont 2014; 6:539-46. [PMID: 25551015 PMCID: PMC4279054 DOI: 10.4047/jap.2014.6.6.539] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 09/04/2014] [Accepted: 09/18/2014] [Indexed: 01/01/2023] Open
Abstract
PURPOSE Silk fibroin (SF) is a new degradable barrier membrane for guided bone regeneration (GBR) that can reduce the risk of pathogen transmission and the high costs associated with the use of collagen membranes. This study compared the efficacy of SF membranes on GBR with collagen membranes (Bio-Gide®) using a rat calvarial defect model. MATERIALS AND METHODS Thirty-six male Sprague Dawley rats with two 5 mm-sized circular defects in the calvarial bone were prepared (n=72). The study groups were divided into a control group (no membrane) and two experimental groups (SF membrane and Bio-Gide®). Each group of 24 samples was subdivided at 2, 4, and 8 weeks after implantation. New bone formation was evaluated using microcomputerized tomography and histological examination. RESULTS Bone regeneration was observed in the SF and Bio-Gide®-treated groups to a greater extent than in the control group (mean volume of new bone was 5.49 ± 1.48 mm(3) at 8 weeks). There were different patterns of bone regeneration between the SF membrane and the Bio-Gide® samples. However, the absolute volume of new bone in the SF membrane-treated group was not significantly different from that in the collagen membrane-treated group at 8 weeks (8.75 ± 0.80 vs. 8.47 ± 0.75 mm(3), respectively, P=.592). CONCLUSION SF membranes successfully enhanced comparable volumes of bone regeneration in calvarial bone defects compared with collagen membranes. Considering the lower cost and lesser risk of infectious transmission from animal tissue, SF membranes are a viable alternative to collagen membranes for GBR.
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Affiliation(s)
- Jwa-Young Kim
- Department of Oral and Maxillofacial Surgery, Hallym University School of Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Byoung-Eun Yang
- Department of Oral and Maxillofacial Surgery, Hallym University School of Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Jin-Hee Ahn
- Department of Prosthodontics, Hallym University School of Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Sang O Park
- Department of Emergency Medicine, Konkuk University School of medicine, Konkuk University Medical Center, Seoul, Republic of Korea
| | - Hye-Won Shim
- Department of Prosthodontics, Hallym University School of Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
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311
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Cheung JW, McCulloch CA, Santerre JP. Establishing a gingival fibroblast phenotype in a perfused degradable polyurethane scaffold: Mediation by TGF-β1, FGF-2, β1-integrin, and focal adhesion kinase. Biomaterials 2014; 35:10025-32. [DOI: 10.1016/j.biomaterials.2014.09.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/26/2014] [Accepted: 08/30/2014] [Indexed: 11/30/2022]
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312
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Verdanova M, Pytlik R, Kalbacova MH. Evaluation of sericin as a fetal bovine serum-replacing cryoprotectant during freezing of human mesenchymal stromal cells and human osteoblast-like cells. Biopreserv Biobank 2014; 12:99-105. [PMID: 24749876 DOI: 10.1089/bio.2013.0078] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
A reliable, cryoprotective, xeno-free medium suitable for different cell types is highly desirable in regenerative medicine. There is danger of infection or allergic reaction with the use of fetal bovine serum (FBS), making it problematic for medical applications. The aim of the present study was to develop an FBS-free cryoprotective medium for human mesenchymal stromal cells (hMSCs; primary cells) and immortalized human osteoblasts (SAOS-2 cell line). Furthermore, we endeavored to eliminate or reduce the presence of dimethyl sulfoxide (DMSO) in the medium. Sericin, a sticky protein derived from the silkworm cocoon, was investigated as a substitute for FBS and DMSO in the freezing medium. Cell viability (24 hours after thawing, both hMSC and SAOS-2) and colony-forming ability (2 weeks after thawing, only for hMSCs) were both determined. The FBS-free medium with 1% sericin in 10% DMSO was found to be a suitable freezing medium for primary hMSCs, in contrast to immortalized human osteoblasts. Surprisingly, the storage of hMSCs in a cultivation medium with only 10% DMSO also provided satisfactory results. Any drop in DMSO concentration led to significantly worse survival of cells, with little improvement in hMSC survival in the presence of sericin. Thus, sericin may substitute for FBS in the freezing medium for primary hMSCs, but cannot substitute for DMSO.
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Affiliation(s)
- Martina Verdanova
- 1 Institute of Inherited Metabolic Disorders, Faculty of Science, Charles University in Prague , Prague, Czech Republic
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313
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Lee SW, Kim SG. Membranes for the Guided Bone Regeneration. Maxillofac Plast Reconstr Surg 2014; 36:239-46. [PMID: 27489841 PMCID: PMC4283533 DOI: 10.14402/jkamprs.2014.36.6.239] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 10/07/2014] [Accepted: 10/17/2014] [Indexed: 11/17/2022] Open
Abstract
Many kinds of membrane have been used for the guided bone regeneration (GBR) technique. However, most membranes do not fulfill all requirements for the ideal membrane for the GBR technique. Among them, collagen membrane has been most widely used. However, its high price and weak tensile strength in wet condition are limitations for wide clinical application. Synthetic polymers have also been used for the GBR technique. Recently, silk based membrane has been considered as a membrane for the GBR technique. Despite many promising preclinical data for use of a silk membrane, clinical data regarding the silk membrane has been limited. However, silk based material has been used clinically as vessel-tie material and an electrospun silk membrane was applied successfully to patients. No adverse effect related to the silk suture has been reported. Considering that silk membrane can be provided to patients at a cheap price, its clinical application should be encouraged.
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Affiliation(s)
- Sang-Woon Lee
- Correspondence to Seong-Gon Kim, Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, 7 Jukheon-gil, Gangneung 210-702, Korea, Tel: 82-33-640-2468, Fax: 82-33-641-2477, E-mail:
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314
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Comparison of different concentrations of tetracycline-loaded silk fibroin membranes on the guided bone regeneration in the rat calvarial defect model. Tissue Eng Regen Med 2014. [DOI: 10.1007/s13770-014-9057-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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315
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Siddiqui N, Pramanik K. Development of fibrin conjugated chitosan/nano β-TCP composite scaffolds with improved cell supportive property for bone tissue regeneration. J Appl Polym Sci 2014. [DOI: 10.1002/app.41534] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Nadeem Siddiqui
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela India 769008
| | - Krishna Pramanik
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela India 769008
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316
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Rohman G. Materials Used in Biomaterial Applications. Biomaterials 2014. [DOI: 10.1002/9781119043553.ch3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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317
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Maghdouri-White Y, Bowlin GL, Lemmon CA, Dréau D. Mammary epithelial cell adhesion, viability, and infiltration on blended or coated silk fibroin–collagen type I electrospun scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 43:37-44. [DOI: 10.1016/j.msec.2014.06.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 06/02/2014] [Accepted: 06/30/2014] [Indexed: 12/16/2022]
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318
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Sarker B, Singh R, Silva R, Roether JA, Kaschta J, Detsch R, Schubert DW, Cicha I, Boccaccini AR. Evaluation of fibroblasts adhesion and proliferation on alginate-gelatin crosslinked hydrogel. PLoS One 2014; 9:e107952. [PMID: 25268892 PMCID: PMC4182442 DOI: 10.1371/journal.pone.0107952] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 08/17/2014] [Indexed: 12/16/2022] Open
Abstract
Due to the relatively poor cell-material interaction of alginate hydrogel, alginate-gelatin crosslinked (ADA-GEL) hydrogel was synthesized through covalent crosslinking of alginate di-aldehyde (ADA) with gelatin that supported cell attachment, spreading and proliferation. This study highlights the evaluation of the physico-chemical properties of synthesized ADA-GEL hydrogels of different compositions compared to alginate in the form of films. Moreover, in vitro cell-material interaction on ADA-GEL hydrogels of different compositions compared to alginate was investigated by using normal human dermal fibroblasts. Viability, attachment, spreading and proliferation of fibroblasts were significantly increased on ADA-GEL hydrogels compared to alginate. Moreover, in vitro cytocompatibility of ADA-GEL hydrogels was found to be increased with increasing gelatin content. These findings indicate that ADA-GEL hydrogel is a promising material for the biomedical applications in tissue-engineering and regeneration.
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Affiliation(s)
- Bapi Sarker
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Raminder Singh
- Department of Cardiology and Angiology, University Hospital Erlangen, Erlangen, Germany
| | - Raquel Silva
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Judith A. Roether
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Joachim Kaschta
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Rainer Detsch
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Dirk W. Schubert
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Iwona Cicha
- Department of Cardiology and Angiology, University Hospital Erlangen, Erlangen, Germany
- Cardiovascular Nanomedicine Unit, Section of Experimental Oncology and Nanomedicine, ENT Department, University Hospital, Erlangen, Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
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319
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Park YT, Kweon HY, Kim SG. Soft Tissue Augmentation with Silk Composite Graft. Maxillofac Plast Reconstr Surg 2014; 36:192-200. [PMID: 27489833 PMCID: PMC4283525 DOI: 10.14402/jkamprs.2014.36.5.192] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 08/12/2014] [Accepted: 09/03/2014] [Indexed: 11/17/2022] Open
Abstract
PURPOSE The objective of this study was to evaluate the interaction between 4-hexylresorcinol (4HR) and antibody as that affects the performance of a silk-4HR combination graft for soft tissue augmentation in an animal model. METHODS The silk graft materials consisted of four types: silk+10% tricalcium phosphate (TCP) (ST0), silk+10% TCP+1% 4HR (ST1), silk+10% TCP+3% 4HR (ST3), and silk+10% TCP+6% 4-HR (ST6). The antibody binding assay tested the 4HR effect and scanning electron microscopic (SEM) exam was done for silk grafts. The animal experiment used a subcutaneous pocket mouse model. The graft - SH0 or SH1 or SH3 or SH6 - was placed in a subcutaneous pocket. The animals were killed at one, two, and four weeks, postoperatively. The specimens were subjected to histological analysis and lysozyme assay. RESULTS Groups with 4HR applied showed lower antibody binding affinity to antigen compared to groups without 4HR. In the SEM examination, there was no significant difference among groups. Histological examinations revealed many foreign body giant cells in ST0 and ST1 group at four weeks postoperatively. Both ST3 and ST6 groups developed significantly lower levels of giant cell values compared to ST0 and ST1 groups (P <0.001) at four weeks postoperatively. In the lysozyme assay, the ST1 and ST3 groups showed denser signals than the other groups. CONCLUSION 4HR combined silk implants resulted in high levels of vascular and connective tissue regeneration.
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Affiliation(s)
- Yong-Tae Park
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University
| | | | - Seong-Gon Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University
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320
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Ha YY, Park YW, Kweon H, Jo YY, Kim SG. Comparison of the physical properties and in vivo bioactivities of silkworm-cocoon-derived silk membrane, collagen membrane, and polytetrafluoroethylene membrane for guided bone regeneration. Macromol Res 2014. [DOI: 10.1007/s13233-014-2138-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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321
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Hodgkinson T, Yuan XF, Bayat A. Electrospun silk fibroin fiber diameter influences in vitro dermal fibroblast behavior and promotes healing of ex vivo wound models. J Tissue Eng 2014; 5:2041731414551661. [PMID: 25383171 PMCID: PMC4221927 DOI: 10.1177/2041731414551661] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 08/22/2014] [Indexed: 01/26/2023] Open
Abstract
Replicating the nanostructured components of extracellular matrix is a target for dermal tissue engineering and regenerative medicine. Electrospinning Bombyx mori silk fibroin (BMSF) allows the production of nano- to microscale fibrous scaffolds. For BMSF electrospun scaffolds to be successful, understanding and optimizing the cellular response to material morphology is essential. Primary human dermal fibroblast response to nine variants of BMSF scaffolds composed of nano- to microscale fibers ranging from ~250 to ~1200 nm was assessed in vitro with regard to cell proliferation, viability, cellular morphology, and gene expression. BMSF support of epithelial migration was then assessed through utilization of a novel ex vivo human skin wound healing model. Scaffolds composed of the smallest diameter fibers, ~250 -300 nm, supported cell proliferation significantly more than fibers with diameters approximately 1 μm (p < 0.001). Cell morphology was observed to depart from a stellate morphology with numerous cell -fiber interactions to an elongated, fiber-aligned morphology with interaction predominately with single fibers. The expressions of extracellular matrix genes, collagen types I and III (p < 0.001), and proliferation markers, proliferating cell nuclear antigen (p < 0.001), increased with decreasing fiber diameter. The re-epithelialization of ex vivo wound models was significantly improved with the addition of BMSF electrospun scaffolds, with migratory keratinocytes incorporated into scaffolds. BMSF scaffolds with nanofibrous architectures enhanced proliferation in comparison to microfibrous scaffolds and provided an effective template for migratory keratinocytes during re-epithelialization. The results may aid in the development of effective BMSF electrospun scaffolds for wound healing applications
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Affiliation(s)
- Tom Hodgkinson
- Plastic & Reconstructive Surgery Research, Manchester Institute of Biotechnology, University of Manchester, Manchester, UK ; School of Chemical Engineering and Analytical Science, University of Manchester, Manchester, UK
| | - Xue-Feng Yuan
- National Supercomputer Centre in Guangzhou (NSCC-GZ), Research Institute for Application of High Performance Computing, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Ardeshir Bayat
- Plastic & Reconstructive Surgery Research, Manchester Institute of Biotechnology, University of Manchester, Manchester, UK
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322
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Construction of transgenic silkworm spinning antibacterial silk with fluorescence. Mol Biol Rep 2014; 42:19-25. [DOI: 10.1007/s11033-014-3735-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 09/10/2014] [Indexed: 01/13/2023]
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323
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Ozcelik B, Brown KD, Blencowe A, Ladewig K, Stevens GW, Scheerlinck JPY, Abberton K, Daniell M, Qiao GG. Biodegradable and biocompatible poly(ethylene glycol)-based hydrogel films for the regeneration of corneal endothelium. Adv Healthc Mater 2014; 3:1496-507. [PMID: 24652807 DOI: 10.1002/adhm.201400045] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Indexed: 12/16/2022]
Abstract
Corneal endothelial cells (CECs) are responsible for maintaining the transparency of the human cornea. Loss of CECs results in blindness, requiring corneal transplantation. In this study, fabrication of biocompatible and biodegradable poly(ethylene glycol) (PEG)-based hydrogel films (PHFs) for the regeneration and transplantation of CECs is described. The 50-μm thin hydrogel films have similar or greater tensile strengths to human corneal tissue. Light transmission studies reveal that the films are >98% optically transparent, while in vitro degradation studies demonstrate their biodegradation characteristics. Cell culture studies demonstrate the regeneration of sheep corneal endothelium on the PHFs. Although sheep CECs do not regenerate in vivo, these cells proliferate on the films with natural morphology and become 100% confluent within 7 d. Implantation of the PHFs into live sheep corneas demonstrates the robustness of the films for surgical purposes. Regular slit lamp examinations and histology of the cornea after 28 d following surgery reveal minimal inflammatory responses and no toxicity, indicating that the films are benign. The results of this study suggest that PHFs are excellent candidates as platforms for the regeneration and transplantation of CECs as a result of their favorable biocompatibility, degradability, mechanical, and optical properties.
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Affiliation(s)
- Berkay Ozcelik
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Karl D. Brown
- Centre for Eye Research Australia (CERA); Royal Victorian Eye & Ear Hospital, Peter Howson Wing; Victoria 3002 Australia
| | - Anton Blencowe
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Katharina Ladewig
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Geoffrey W. Stevens
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | | | - Keren Abberton
- O'Brien Institute; Fitzroy St, Fitzroy Victoria 3065 Australia
- Faculty of Health Sciences, Australian Catholic University; Melbourne Australia
- Department of Surgery; St. Vincent's Hospital; Fitzroy St Fitzroy Victoria 3065 Australia
| | - Mark Daniell
- Centre for Eye Research Australia (CERA); Royal Victorian Eye & Ear Hospital, Peter Howson Wing; Victoria 3002 Australia
| | - Greg G. Qiao
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
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324
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Malhotra U, Maity S, Chatterjee A. Polypyrrole-silk electro-conductive composite fabric byin situchemical polymerization. J Appl Polym Sci 2014. [DOI: 10.1002/app.41336] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Urvashi Malhotra
- Department of Textile Engineering; Jawaharlal Nehru Government Engineering College; Sundernagar Himachal Pradesh 175018 India
| | - Subhankar Maity
- Department of Textile Technology; Dr. B. R. Ambedkar National Institute of Technology; Jalandhar Punjab 144011 India
| | - Arobindo Chatterjee
- Department of Textile Technology; Dr. B. R. Ambedkar National Institute of Technology; Jalandhar Punjab 144011 India
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325
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Huang G, Yang D, Sun C, Huang J, Chen K, Zhang C, Chen H, Yao Q. A quicker degradation rate is yielded by a novel kind of transgenic silk fibroin consisting of shortened silk fibroin heavy chains fused with matrix metalloproteinase cleavage sites. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1833-1842. [PMID: 24801061 DOI: 10.1007/s10856-014-5220-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 04/19/2014] [Indexed: 06/03/2023]
Abstract
Degradation performance of silk fibroin is an important property for its medical applications. Herein we constructed a shortened silk fibroin heavy chain protein fused with a matrix metalloproteinase cleavage site (SSFH-MMP) along with a glutathione S-transferase tag ahead. The digestion assay shows it can be cut by matrix metalloproteinase-2 (MMP-2) at its MMP cleavage site. Furthermore, we introduced the SSFH-MMP into silk fibroin by genetic modification of silkworms in order to increase the degradation rate of the silk fibroin. After acquisition of a race of transgenic silkworms with the coding sequence of the MMP cleavage site in their genomic DNA, we tested some properties of their silk fibroin designated TSF-MMP. The results show that the TSF-MMP has MMP cleavage sites and yields a quicker degradation rate during dilution in MMP-2 enzyme buffer or implantation into tumor tissues compared with that of normal silk fibroin. Moreover, the TSF-MMP is in vitro non-toxic to human bone marrow mesenchymal stem cells (hBM-MSCs) indicating that the TSF-MMP may become a biomaterial with a quicker degradation rate for its medical applications.
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Affiliation(s)
- Guoping Huang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China,
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326
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Kambe Y, Sutherland TD, Kameda T. Recombinant production and film properties of full-length hornet silk proteins. Acta Biomater 2014; 10:3590-8. [PMID: 24862540 DOI: 10.1016/j.actbio.2014.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 05/01/2014] [Accepted: 05/15/2014] [Indexed: 12/12/2022]
Abstract
Full-length versions of the four main components of silk cocoons of Vespa simillima hornets, Vssilk1-4, were produced as recombinant proteins in Escherichia coli. In shake flasks, the recombinant Vssilk proteins yielded 160-330mg recombinant proteinl(-1). Films generated from solutions of single Vssilk proteins had a secondary structure similar to that of films generated from native hornet silk. The films made from individual recombinant hornet silk proteins had similar or enhanced mechanical performance compared with films generated from native hornet silk, possibly reflecting the homogeneity of the recombinant proteins. The pH-dependent changes in zeta (ζ) potential of each Vssilk film were measured, and isoelectric points (pI) of Vssilk1-4 were determined as 8.9, 9.1, 5.0 and 4.2, respectively. The pI of native hornet silk, a combination of the four Vssilk proteins, was 4.7, a value similar to that of Bombyx mori silkworm silk. Films generated from Vssilk1 and 2 had net positive charge under physiological conditions and showed significantly higher cell adhesion activity. It is proposed that recombinant hornet silk is a valuable new material with potential for cell culture applications.
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327
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Kweon H, Lee SW, Hahn BD, Lee YC, Kim SG. Hydroxyapatite and silk combination-coated dental implants result in superior bone formation in the peri-implant area compared with hydroxyapatite and collagen combination-coated implants. J Oral Maxillofac Surg 2014; 72:1928-36. [PMID: 25234528 DOI: 10.1016/j.joms.2014.06.455] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 06/11/2014] [Accepted: 06/30/2014] [Indexed: 01/28/2023]
Abstract
PURPOSE The objective of this study was to compare bone formation after installation of uncoated (UC), hydroxyapatite-coated (HA), collagen plus HA-coated (CH), and silk plus HA-coated (SH) implants. MATERIALS AND METHODS Implants in the UC group had acid-etched surfaces. Surface coating was applied using the aerosol deposition method. Cellular responses on the coated surfaces were examined with scanning electron microscopy. Cellular responses to the surfaces were studied with the corresponding coated discs and MG63 cells. Subsequently, 3-(4, 5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and alkaline phosphatase (ALP) assays were performed. Peri-implant bone formation was evaluated with the rabbit tibia model. Twenty-four implants from each group were installed. The animals were sacrificed 6 weeks after implant installation. Peri-implant bone formation and implant-to-bone contact were measured in histologic sections. Significance of differences across groups was evaluated using analysis of variance. RESULTS Scanning electron microscopic images showed that the CH and SH groups exhibited cells that appeared more spread out than those in the other groups. The SH group exhibited the highest value in the MTT assay. The CH group exhibited the highest level of ALP activity. Comparisons of these modifications with the acid-etched surfaces showed that the CH and SH groups displayed significantly greater peri-implant bone formation (P < .001). CONCLUSION The SH group displayed significantly greater new bone formation and bone-to-implant contact than did the other groups.
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Affiliation(s)
- HaeYong Kweon
- Researcher, Sericultural and Apicultural Materials Division, National Academy of Agricultural Science, RDA, Suwon, Republic of Korea
| | - Sang-Woon Lee
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Gangneung Asan Hospital, Gangneung, Republic of Korea
| | - Byung-Dong Hahn
- Researcher, Powder and Ceramics Division, Korea Institute of Materials Science, Changwon, Republic of Korea
| | - Yong-Chan Lee
- Clinician, Department of Oral and Maxillofacial Surgery, Bestian Hospital, Seoul, Republic of Korea
| | - Seong-Gon Kim
- Associate Professor and Chairman, Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, Republic of Korea.
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328
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Kundu B, Kurland NE, Yadavalli VK, Kundu SC. Isolation and processing of silk proteins for biomedical applications. Int J Biol Macromol 2014; 70:70-7. [PMID: 24971560 DOI: 10.1016/j.ijbiomac.2014.06.022] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 04/11/2014] [Accepted: 06/07/2014] [Indexed: 12/16/2022]
Abstract
Silk proteins of silkworms are chiefly composed of core fibroin protein and glycoprotein sericin that glues fibroin. Unique mechanical properties, cyto-compatibility and controllable biodegradability facilitate the use of fibroin in biomedical applications. Sericin serves as additive in cosmetic and food industries, as mitotic factor in cell culture media, anti-cancerous drug, anticoagulant and as biocompatible coating. For all these uses; aqueous solutions of silk proteins are preferred. Therefore, an accurate understanding of extraction procedure of silk proteins from their sources is critical. A number of protocols exist, amongst which it is required to settle a precise and easy one with desired yield and least down-stream processing. Here, we report extraction of proteins employing methods mentioned in literature using cocoons of mulberry and nonmulberry silks. This study reveals sodium carbonate salt-boiling system is the most efficient sericin extraction procedure for all silk variants. Lithium bromide is observed as the effective fibroin dissolution system for mulberry silk cocoons; whereas heterogeneous species-dependent result is obtained in case of nonmulberry species. We further show the effect of common post processing on nanoscale morphology of mulberry silk fibroin films. This knowledge eases the adoption and fabrication of silk biomaterials in devices and therapeutic delivery systems.
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Affiliation(s)
- Banani Kundu
- Department of Biotechnology, Indian Institute of Technology, Kharagpur 721302, India
| | - Nicholas E Kurland
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Vamsi K Yadavalli
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA.
| | - Subhas C Kundu
- Department of Biotechnology, Indian Institute of Technology, Kharagpur 721302, India.
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329
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Jin J, Wang J, Huang J, Huang F, Fu J, Yang X, Miao Z. Transplantation of human placenta-derived mesenchymal stem cells in a silk fibroin/hydroxyapatite scaffold improves bone repair in rabbits. J Biosci Bioeng 2014; 118:593-8. [PMID: 24894683 DOI: 10.1016/j.jbiosc.2014.05.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 04/07/2014] [Accepted: 05/03/2014] [Indexed: 12/13/2022]
Abstract
The main requirements for successful tissue engineering of the bone are non-immunogenic cells with osteogenic potential and a porous biodegradable scaffold. The purpose of this study is to evaluate the potential of a silk fibroin/hydroxyapatite (SF/HA) porous material as a delivery vehicle for human placenta-derived mesenchymal stem cells (PMSCs) in a rabbit radius defect model. In this study, we randomly assigned 16 healthy adult New Zealand rabbits into two groups, subjected to transplantation with either SF/HA and PMSCs (experimental group) or SF/HA alone (control group). To evaluate fracture healing, we assessed the extent of graft absorption, the quantity of newly formed bone, and re-canalization of the cavitas medullaris using radiographic and histological tools. We performed flow cytometric analysis to characterize PMSCs, and found that while they express CD90, CD105 and CD73, they stain negative for HLA-DR and the hematopoietic cell surface markers CD34 and CD45. When PMSCs were exposed to osteogenic induction medium, they secreted calcium crystals that were identified by von Kossa staining. Furthermore, when seeded on the surface of SF/HA scaffold, they actively secreted extracellular matrix components. Here, we show, through radiographic and histological analyses, that fracture healing in the experimental group is significantly improved over the control group. This strongly suggests that transplantation of human PMSCs grown in an SF/HA scaffold into injured radius segmental bone in rabbits, can markedly enhance tissue repair. Our finding provides evidence supporting the utility of human placenta as a potential source of stem cells for bone tissue engineering.
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Affiliation(s)
- Jun Jin
- Department of Intensive Care Unit, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Jun Wang
- Department of Intensive Care Unit, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Jian Huang
- Department of Intensive Care Unit, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Fang Huang
- Department of Intensive Care Unit, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Jianhong Fu
- Department of Intensive Care Unit, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Xinjing Yang
- Department of Intensive Care Unit, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, China
| | - Zongning Miao
- The Stem Cell Research Lab of Wuxi, No. 3 People's Hospital, Xingyuan Bei Road, Wuxi 214041, China.
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330
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Biomechanics and biocompatibility of woven spider silk meshes during remodeling in a rodent fascia replacement model. Ann Surg 2014; 259:781-92. [PMID: 23873006 DOI: 10.1097/sla.0b013e3182917677] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVE The aim of this study was to investigate biomechanical and immunogenic properties of spider silk meshes implanted as fascia replacement in a rat in vivo model. BACKGROUND Meshes for hernia repair require optimal characteristics with regard to strength, elasticity, and cytocompatibility. Spider silk as a biomaterial with outstanding mechanical properties is potentially suitable for this application. METHODS Commercially available meshes used for hernia repair (Surgisis and Ultrapro) were compared with handwoven meshes manufactured from native dragline silk of Nephila spp. All meshes were tied onto the paravertebral fascia, whereas sham-operated rats were sutured without mesh implantation. After 4 or 14 days, 4 weeks, and 4 or 8 months, tissue samples were analyzed concerning inflammation and biointegration both by histological and biochemical methods and by biomechanical stability tests. RESULTS Histological sections revealed rapid cell migration into the spider silk meshes with increased numbers of giant cells compared with controls with initial decomposition of silk fibers after 4 weeks. Four months postoperatively, spider silk was completely degraded with the formation of a stable scar verified by constant tensile strength values. Surgisis elicited excessive stability loss from day 4 to day 14 (P < 0.001), with distinct inflammatory reaction demonstrated by lymphocyte and neutrophil invasion. Ultrapro also showed decreasing strength and poor elongation behavior, whereas spider silk samples had the highest relative elongation (P < 0.05). CONCLUSIONS Hand-manufactured spider silk meshes with good biocompatibility and beneficial mechanical properties seem superior to standard biological and synthetic meshes, implying an innovative alternative to currently used meshes for hernia repair.
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331
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Xu S, Xu Z, Starrett J, Hayashi C, Wang X. Cross-plane thermal transport in micrometer-thick spider silk films. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.02.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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332
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Yang YJ, Kwon Y, Choi BH, Jung D, Seo JH, Lee KH, Cha HJ. Multifunctional Adhesive Silk Fibroin with Blending of RGD-Bioconjugated Mussel Adhesive Protein. Biomacromolecules 2014; 15:1390-8. [DOI: 10.1021/bm500001n] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yun Jung Yang
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Yunkyeoung Kwon
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Bong-Hyuk Choi
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Dooyup Jung
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Jeong Hyun Seo
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Ki Hoon Lee
- Department
of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 151-921, Korea
| | - Hyung Joon Cha
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
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333
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Teuschl AH, van Griensven M, Redl H. Sericin removal from raw Bombyx mori silk scaffolds of high hierarchical order. Tissue Eng Part C Methods 2014; 20:431-9. [PMID: 24066942 DOI: 10.1089/ten.tec.2013.0278] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Silk fibroin has previously been described as a promising candidate for ligament tissue engineering (TE) approaches. For biocompatibility reasons, silkworm silk requires removal of sericin, which can elicit adverse immune responses in the human body. One disadvantage of the required degumming process is the alteration of the silk fiber structural properties, which can hinder textile engineering of high order hierarchical structures. Therefore, the aim of this study was to find a way to remove sericin from a compact and highly ordered raw silk fiber matrix. The wire rope design of the test model scaffold comprises several levels of geometric hierarchy. Commonly used degumming solutions fail in removing sericin in this wire rope design. Weight loss measurements, picric acid and carmine staining as well as scanning electron microscopy demonstrated that the removal of sericin from the model scaffold of a wire rope design can be achieved through a borate buffer-based system. Furthermore, the borate buffer degummed silks were shown to be nontoxic and did not alter cell proliferation behavior. The possibility to remove sericin after the textile engineering process has taken place eases the production of highly ordered scaffold structures and may expand the use of silk as scaffold material in further TE and regenerative medicine applications.
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Affiliation(s)
- Andreas Herbert Teuschl
- 1 Department of Biochemical Engineering, University of Applied Sciences Technikum Wien , Wien, Austria
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334
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Kundu B, Kurland NE, Bano S, Patra C, Engel FB, Yadavalli VK, Kundu SC. Silk proteins for biomedical applications: Bioengineering perspectives. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2013.09.002] [Citation(s) in RCA: 297] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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335
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Kim MK, Lee KH. Fabrication of Porous Silk Fibroin Microparticles by Electrohydrodynamic Spraying. POLYMER KOREA 2014. [DOI: 10.7317/pk.2014.38.1.98] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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336
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Neffe AT, Wischke C, Racheva M, Lendlein A. Progress in biopolymer-based biomaterials and their application in controlled drug delivery. Expert Rev Med Devices 2014; 10:813-33. [DOI: 10.1586/17434440.2013.839209] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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337
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Yang Y, Kwak HW, Lee KH. Effect of Residual Lithium Ions on the Structure and Cytotoxicity of Silk Fibroin Film. ACTA ACUST UNITED AC 2013. [DOI: 10.7852/ijie.2013.27.2.265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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338
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Enhanced mechanical properties of thermosensitive chitosan hydrogel by silk fibers for cartilage tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4786-94. [DOI: 10.1016/j.msec.2013.07.043] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 07/12/2013] [Accepted: 07/29/2013] [Indexed: 02/06/2023]
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339
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Gil ES, Park SH, Hu X, Cebe P, Kaplan DL. Impact of Sterilization on the Enzymatic Degradation and Mechanical Properties of Silk Biomaterials. Macromol Biosci 2013; 14:257-69. [DOI: 10.1002/mabi.201300321] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 08/15/2013] [Indexed: 12/24/2022]
Affiliation(s)
- Eun Seok Gil
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
| | - Sang-Hyug Park
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
- Department of Biomedical Engineering; Jungwon University; Goesan-eup Chungbuk Korea
| | - Xiao Hu
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
- Department of Physics & Astronomy; and Department of Biomedical Engineering and Sciences; Rowan University; Glassboro NJ 08028 USA
| | - Peggy Cebe
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
- Department of Physics and Astronomy; Tufts University; 4 Colby St. Medford 02155 MA USA
| | - David L. Kaplan
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
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340
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Chlapanidas T, Tosca MC, Faragò S, Perteghella S, Galuzzi M, Lucconi G, Antonioli B, Ciancio F, Rapisarda V, Vigo D, Marazzi M, Faustini M, Torre ML. Formulation and characterization of silk fibroin films as a scaffold for adipose-derived stem cells in skin tissue engineering. Int J Immunopathol Pharmacol 2013; 26:43-9. [PMID: 24046948 DOI: 10.1177/03946320130260s106] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Skin substitutes are epidermal, dermal or complete bilayered constructs, composed by natural or synthetic scaffolds and by adherent cells such as fibroblasts, keratinocytes or mesenchymal stem cells. Silk fibroin is a promising polymer to realize scaffolds, since it is biocompatible, biodegradable, and exhibits excellent mechanical properties in terms of tensile strength. Moreover, fibroin can be added of others components in order to modify the biomaterial properties for the purpose. The aim of this work is to prepare silk fibroin films for adipose-derived stem cell (ADSCs) culture as a novel feeder layer for skin tissue engineering. Pectin has been added to promote the protein conformational transition and construct strength, while glycerol as plasticizer, providing biomaterial flexibility. Eighteen formulations were prepared by casting method using fibroin, pectin (range 1-10% w/w), and glycerol (range 0-20% w/w); films were characterized by Fourier transform infrared spectroscopy and differential scanning calorimetry assay, to select the optimal composition. A stable fibroin conformation was obtained using 6% w/w pectin, and the best mechanical properties were obtained using 12% w/w glycerol. Films were sterilized, and human ADSCs were seeded and cultured for 15 days. Cells adhere to the support assuming a fibroblastic-like shape and reaching confluence. The ultrastructural analysis evidences typical active-cell features and adhesion structures that promote cell anchorage to the film, thus developing a multilayered cell structure. This construct could be advantageously employed in cutaneous wound healing or where the use of ADSCs scaffold is indicated either in human or veterinary field.
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Affiliation(s)
- T Chlapanidas
- Dipartimento di Scienze del Farmaco, Università degli Studi di Pavia, Pavia, Italy
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341
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Shakya AK, Holmdahl R, Nandakumar KS, Kumar A. Polymeric cryogels are biocompatible, and their biodegradation is independent of oxidative radicals. J Biomed Mater Res A 2013; 102:3409-18. [PMID: 24142798 DOI: 10.1002/jbm.a.35013] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 10/10/2013] [Accepted: 10/15/2013] [Indexed: 01/08/2023]
Abstract
Biocompatibility and in vivo degradation are two important characteristics of cell scaffolds. We evaluated these properties for four different polymeric macroporous cryogels, polyvinylcaprolactam, polyvinyl alcohol-alginate-bioactive glass composite, polyhydroxyethylmethacrylate-gelatin (pHEMA-gelatin), and chitosan-agarose-gelatin in mice. All the cryogels were synthesized at subzero temperature and were implanted subcutaneously in C57Bl/10.Q inbred mice. Both local and systemic toxicities were negligible as determined by serum tumor necrosis factor α analysis and histology of surrounding tissues nearby the implants. Complete integration of cryogels into the surrounding tissues with neovascular formation was evident in all the mice. At the implantation site, massive infiltration of macrophages and few dendritic cells were observed but neutrophils and mast cells were clearly absent. Macrophage infiltrations were observed even inside the pores of cryogel implants. To ascertain whether oxidative radicals are involved in the cryogel degradation, we implanted these gels in mice deficient for reactive oxygen species (ROS) production. Rapid gel degradation was observed in the absence of ROS, and there was no significant difference in the biodegradation of these cryogels between ROS sufficient and deficient mice thereby excluding any major role for ROS in this process. Thus, we demonstrate the biocompatibility and ROS-independent biodegradable properties of cryogels that could be useful for tissue-specific tissue engineering applications.
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Affiliation(s)
- Akhilesh Kumar Shakya
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, 208016, Uttar Pradesh, India; Department of Biochemistry and Biophysics, Medical Inflammation Research, Karolinska Institute, Stockholm, 17177, Sweden
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342
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Seok H, Lee SW, Kim SG, Seo DH, Kim HS, Kweon HY, Jo YY, Kang TY, Lee MJ, Chae WS. The Effect of Silk Membrane Plus 3% 4-hexylresorcinol on Guided Bone Regeneration in a Rabbit Calvarial Defect Model. ACTA ACUST UNITED AC 2013. [DOI: 10.7852/ijie.2013.27.1.209] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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343
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Aytemiz D, Asakura T. Application of Bombyx mori Silk Fibroin as a Biomaterial for Vascular Grafts. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/978-94-007-7119-2_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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344
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Tamayol A, Akbari M, Annabi N, Paul A, Khademhosseini A, Juncker D. Fiber-based tissue engineering: Progress, challenges, and opportunities. Biotechnol Adv 2013; 31:669-87. [PMID: 23195284 PMCID: PMC3631569 DOI: 10.1016/j.biotechadv.2012.11.007] [Citation(s) in RCA: 271] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 11/16/2012] [Accepted: 11/19/2012] [Indexed: 12/28/2022]
Abstract
Tissue engineering aims to improve the function of diseased or damaged organs by creating biological substitutes. To fabricate a functional tissue, the engineered construct should mimic the physiological environment including its structural, topographical, and mechanical properties. Moreover, the construct should facilitate nutrients and oxygen diffusion as well as removal of metabolic waste during tissue regeneration. In the last decade, fiber-based techniques such as weaving, knitting, braiding, as well as electrospinning, and direct writing have emerged as promising platforms for making 3D tissue constructs that can address the abovementioned challenges. Here, we critically review the techniques used to form cell-free and cell-laden fibers and to assemble them into scaffolds. We compare their mechanical properties, morphological features and biological activity. We discuss current challenges and future opportunities of fiber-based tissue engineering (FBTE) for use in research and clinical practice.
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Affiliation(s)
- Ali Tamayol
- Biomedical Engineering Department, McGill University, Montreal, H3A 0G1, Canada
| | - Mohsen Akbari
- Biomedical Engineering Department, McGill University, Montreal, H3A 0G1, Canada
| | - Nasim Annabi
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute ofTechnology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02139, USA
| | - Arghya Paul
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute ofTechnology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02139, USA
| | - Ali Khademhosseini
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute ofTechnology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02139, USA
| | - David Juncker
- Biomedical Engineering Department, McGill University, Montreal, H3A 0G1, Canada
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345
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Hardy JG, Leal-Egaña A, Scheibel TR. Engineered Spider Silk Protein-Based Composites for Drug Delivery. Macromol Biosci 2013; 13:1431-7. [DOI: 10.1002/mabi.201300233] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 06/07/2013] [Indexed: 12/29/2022]
Affiliation(s)
- John G. Hardy
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften; Universität Bayreuth, Universitätsstraße 30; 95447 Bayreuth Germany
| | - Aldo Leal-Egaña
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften; Universität Bayreuth, Universitätsstraße 30; 95447 Bayreuth Germany
| | - Thomas R. Scheibel
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften; Universität Bayreuth, Universitätsstraße 30; 95447 Bayreuth Germany
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346
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Ji W, Zhang Y, Hu S, Zhang Y. Biocompatibility study of a silk fibroin-chitosan scaffold with adipose tissue-derived stem cells in vitro.. Exp Ther Med 2013; 6:513-518. [PMID: 24137218 PMCID: PMC3786727 DOI: 10.3892/etm.2013.1185] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 06/21/2013] [Indexed: 12/17/2022] Open
Abstract
The use of tissue engineering technology in the repair of spinal cord injury (SCI) is a topic of current interest. The success of the repair of the SCI is directly affected by the selection of suitable seed cells and scaffold materials with an acceptable biocompatibility. In this study, adipose tissue-derived stem cells (ADSCs) were incorporated into a silk fibroin-chitosan scaffold (SFCS), which was constructed using a freeze-drying method, in order to assess the biocompatibility of the ADSCs and the SFCS and to provide a foundation for the use of tissue engineering technology in the repair of SCI. Following the seeding of the cells onto the scaffold, the adhesion characteristics of the ADSCs and the SFCS were assessed. A significant difference was observed between the experimental group (a composite of the ADSCs with the SFCS) and the control group (ADSCs without the scaffold) following a culture period of 6 h (P<0.05). The differences in the results at the following time-points were statistically insignificant (P>0.05). The use of an MTT assay to assess the proliferation of the cells on the scaffold revealed that there were significant differences between the experimental and control groups following culture periods of 2 and 4 days (P<0.05). However, the results at the subsequent time-points were not statistically significantly different (P>0.05). Scanning electron microscopy (SEM), using hematoxylin and eosin (H&E) staining, was used to observe the cellular morphology following seeding, and this revealed that the cells displayed the desired morphology. The results indicate that ADSCs have a good biocompatibility with a SFCS and thus provide a foundation for further studies using tissue engineering methods for the repair of SCI.
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Affiliation(s)
- Wenchen Ji
- Medical School of Xi'an Jiaotong University, Xi'an 710061; ; Department of Neurosurgery, The Third Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an 710068, P.R. China
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347
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Shang K, Rnjak-Kovacina J, Lin Y, Hayden RS, Tao H, Kaplan DL. Accelerated In Vitro Degradation of Optically Clear Low β-Sheet Silk Films by Enzyme-Mediated Pretreatment. Transl Vis Sci Technol 2013; 2:2. [PMID: 24049717 DOI: 10.1167/tvst.2.3.2] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 02/05/2013] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To design patterned, transparent silk films with fast degradation rates for the purpose of tissue engineering corneal stroma. METHODS β-sheet (crystalline) content of silk films was decreased significantly by using a short water annealing time. Additionally, a protocol combining short water annealing time with enzymatic pretreatment of silk films with protease XIV was developed. RESULTS Low β-sheet content (17%-18%) and enzymatic pretreatment provided film stability in aqueous environments and accelerated degradation of the silk films in the presence of human corneal fibroblasts in vitro. The results demonstrate a direct relationship between reduced β-sheet content and enzymatic pretreatment, and overall degradation rate of the protein films. CONCLUSIONS The novel protocol developed here provides new approaches to modulate the regeneration rate of silk biomaterials for corneal tissue regeneration needs. TRANSLATIONAL RELEVANCE Patterned silk protein films possess desirable characteristics for corneal tissue engineering, including optical transparency, biocompatibility, cell alignment, and tunable mechanical properties, but current fabrication protocols do not provide adequate degradation rates to match the regeneration properties of the human cornea. This novel processing protocol makes silk films more suitable for the construction of human corneal stroma tissue and a promising way to tune silk film degradation properties to match corneal tissue regeneration.
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Affiliation(s)
- Ke Shang
- Department of Biomedical Engineering, Tufts University, Medford, MA
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348
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Maghdouri-White Y, Elmore LW, Bowlin GL, Dréau D. Breast epithelial cell infiltration in enhanced electrospun silk scaffolds. J Tissue Eng Regen Med 2013; 10:E121-31. [DOI: 10.1002/term.1778] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 04/09/2013] [Accepted: 04/22/2013] [Indexed: 01/07/2023]
Affiliation(s)
- Yas Maghdouri-White
- Department of Biomedical Engineering; Virginia Commonwealth University; Richmond VA USA
- Department of Biology; University of North Carolina at Charlotte; Charlotte NC USA
| | - Lynne W. Elmore
- Department of Pathology; Virginia Commonwealth University; Richmond VA USA
- Massey Cancer Center; Virginia Commonwealth University; Richmond VA USA
| | - Gary L. Bowlin
- Department of Biomedical Engineering; Virginia Commonwealth University; Richmond VA USA
| | - Didier Dréau
- Department of Biology; University of North Carolina at Charlotte; Charlotte NC USA
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349
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Ozcelik B, Brown KD, Blencowe A, Daniell M, Stevens GW, Qiao GG. Ultrathin chitosan-poly(ethylene glycol) hydrogel films for corneal tissue engineering. Acta Biomater 2013; 9:6594-605. [PMID: 23376126 DOI: 10.1016/j.actbio.2013.01.020] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 11/16/2012] [Accepted: 01/17/2013] [Indexed: 10/27/2022]
Abstract
Due to the high demand for donor corneas and their low supply, autologous corneal endothelial cell (CEC) culture and transplantation for treatment of corneal endothelial dysfunction would be highly desirable. Many studies have shown the possibility of culturing CECs in vitro, but lack potential robust substrates for transplantation into the cornea. In this study, we investigate the properties of novel ultrathin chitosan-poly(ethylene glycol) (PEG) hydrogel films (CPHFs) for corneal tissue engineering applications. Cross-linking of chitosan films with diepoxy-PEG and cystamine was employed to prepare ~50 μm (hydrated) hydrogel films. Through variation of the PEG content (1.5-5.9 wt.%) it was possible to tailor the CPHFs to have tensile strains and ultimate stresses identical to or greater than those of human corneal tissue while retaining similar tensile moduli. Light transmission measurements in the visible spectrum (400-700 nm) revealed that the films were >95% optically transparent, above that of the human cornea (maximum ~90%), whilst in vitro degradation studies with lysozyme revealed that the CPHFs maintained the biodegradable characteristics of chitosan. Cell culture studies demonstrated the ability of the CPHFs to support the attachment and proliferation of sheep CECs. Ex vivo surgical trials on ovine eyes demonstrated that the CPHFs displayed excellent characteristics for physical manipulation and implantation purposes. The ultrathin CPHFs display desirable mechanical, optical and degradation properties whilst allowing attachment and proliferation of ovine CECs, and as such are attractive candidates for the regeneration and transplantation of CECs, as well as other corneal tissue engineering applications.
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350
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Zarbin MA. Accelerated in vitro degradation of optically clear low-β sheet silk films by enzyme-mediated pretreatment. JAMA Ophthalmol 2013; 131:676. [PMID: 23579493 DOI: 10.1001/jamaophthalmol.2013.4319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Marco A Zarbin
- New Jersey Medical School, Institute of Ophthalmology and Visual Science, Newark, NJ 07103, USA.
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