1
|
Gallo N, Natali ML, Sannino A, Salvatore L. An Overview of the Use of Equine Collagen as Emerging Material for Biomedical Applications. J Funct Biomater 2020; 11:jfb11040079. [PMID: 33139660 PMCID: PMC7712325 DOI: 10.3390/jfb11040079] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 10/24/2020] [Accepted: 10/29/2020] [Indexed: 12/19/2022] Open
Abstract
Type I collagen has always aroused great interest in the field of life-science and bioengineering, thanks to its favorable structural properties and bioactivity. For this reason, in the last five decades it has been widely studied and employed as biomaterial for the manufacture of implantable medical devices. Commonly used sources of collagen are represented by bovine and swine but their applications are limited because of the zoonosis transmission risks, the immune response and the religious constrains. Thus, type-I collagen isolated from horse tendon has recently gained increasing interest as an attractive alternative, so that, although bovine and porcine derived collagens still remain the most common ones, more and more companies started to bring to market a various range of equine collagen-based products. In this context, this work aims to overview the properties of equine collagen making it particularly appealing in medicine, cosmetics and pharmaceuticals, as well as its main biomedical applications and the currently approved equine collagen-based medical devices, focusing on experimental studies and clinical trials of the last 15 years. To the best of our knowledge, this is the first review focusing on the use of equine collagen, as well as on equine collagen-based marketed products for healthcare.
Collapse
|
2
|
Three-Dimensional Culture System of Cancer Cells Combined with Biomaterials for Drug Screening. Cancers (Basel) 2020; 12:cancers12102754. [PMID: 32987868 PMCID: PMC7601447 DOI: 10.3390/cancers12102754] [Citation(s) in RCA: 104] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/17/2020] [Accepted: 09/22/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary For the research and development of drug discovery, it is of prime importance to construct the three-dimensional (3D) tissue models in vitro. To this end, the enhancement design of cell function and activity by making use of biomaterials is essential. In this review, 3D culture systems of cancer cells combined with several biomaterials for anticancer drug screening are introduced. Abstract Anticancer drug screening is one of the most important research and development processes to develop new drugs for cancer treatment. However, there is a problem resulting in gaps between the in vitro drug screening and preclinical or clinical study. This is mainly because the condition of cancer cell culture is quite different from that in vivo. As a trial to mimic the in vivo cancer environment, there has been some research on a three-dimensional (3D) culture system by making use of biomaterials. The 3D culture technologies enable us to give cancer cells an in vitro environment close to the in vivo condition. Cancer cells modified to replicate the in vivo cancer environment will promote the biological research or drug discovery of cancers. This review introduces the in vitro research of 3D cell culture systems with biomaterials in addition to a brief summary of the cancer environment.
Collapse
|
3
|
Lee DW, Jang HG, Lee YJ, Moon SG, Kim NR, Kim JG. Effect of atelocollagen on the healing status after medial meniscal root repair using the modified Mason-Allen stitch. Orthop Traumatol Surg Res 2020; 106:969-975. [PMID: 32753355 DOI: 10.1016/j.otsr.2020.03.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 03/21/2020] [Accepted: 03/24/2020] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Addition of collagen during medial meniscal root repair (MMRR) may improve meniscal root healing minimising fibrous scar tissue formation. The purpose of this study was to verify the effect of atelocollagen on MMRR using the modified Mason-Allen stitch when compared with that of the conventional pullout repair by assessing the clinical and radiological outcomes. HYPOTHESIS It was hypothesised that atelocollagen would enhance the healing effect on the meniscal root following MMRR. Moreover, we presumed that MMRR with atelocollagen application might reduce meniscal extrusion by promoting healing. MATERIALS AND METHODS A total of 47 patients who underwent MMRR using the modified Mason-Allen stitch between 2015 and 2016 were included, and they were divided into group A (atelocollagen application; n=25) and group R (MMRR without atelocollagen application; n=22). The postoperative clinical outcomes, radiological outcomes, and meniscal root healing and medial compartment cartilage status on follow-up magnetic resonance imaging (MRI) were compared between the two groups. RESULTS Mean follow-up duration was 26.4±4.8 months in group A and 27.1±5.2 months in group R (p=0.598). Mean duration from surgery to follow-up MRI was 12.5±1.4 months in group A and 12.7±1.2 months in group R (p=0.604). The subjective knee scores improved significantly in both groups at the last follow-up (all, p<0.001). The Kellgren-Lawrence (K-L) grade progressed in 16% and 22.7% in group A and group R, respectively (p=0.351). Follow-up MRI showed progression of cartilage loss in the medial compartment in 28% and 40.9% in group A and group R, respectively (p=0.355). In terms of meniscal root healing, 18 (72%) and 12 (54.5%) patients had complete healing, and 6 (24%) and 8 (36.4%) patients had partial healing in groups A and R, respectively. The mean value of the intra-meniscal signal intensity (IMSI) of the meniscal root based on MRI in group A was significantly lower than that in group R (p<0.001). The medial meniscal extrusion in groups A and R decreased by 0.2±0.1mm and 0.1±0.3mm following MMRR without significant differences (p=0.056 and p=0.229, respectively). The IMSI presented significant negative correlations with the root healing status and significant positive correlations with K-L grade progression (p<0.05). DISCUSSION Atelocollagen application during MMRR yielded lower IMSIs, suggesting better healing, than did conventional pullout root repair. However, this technique could not demonstrate beneficial effects on meniscal extrusion. LEVEL OF EVIDENCE III, retrospective case-control study.
Collapse
Affiliation(s)
- Dhong Won Lee
- Department of Orthopaedic Surgery, KonKuk University Medical Centre, Seoul, Korea
| | - Han Gil Jang
- Department of Orthopaedic Surgery, KonKuk University Medical Centre, Seoul, Korea
| | - Young Jun Lee
- Department of Orthopaedic Surgery, KonKuk University Medical Centre, Seoul, Korea
| | - Sung Gyu Moon
- Department of Radiology, KonKuk University Medical Centre, Seoul, Korea
| | - Na Ra Kim
- Department of Radiology, KonKuk University Medical Centre, Seoul, Korea
| | - Jin Goo Kim
- Department of Orthopaedic Surgery, Myongji Hospital, Goyang-si, Gyeonggi-do, Korea.
| |
Collapse
|
4
|
Yao S, Xie Y, Xiao L, Cai L, Ma Z. Porous and nonporous silk fibroin (SF) membranes wrapping for Achilles tendon (AT) repair: Which one is a better choice? J Biomed Mater Res B Appl Biomater 2018; 107:733-740. [PMID: 30308113 DOI: 10.1002/jbm.b.34167] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/13/2018] [Accepted: 05/08/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Shiyi Yao
- Department of Orthopaedics; Zhongnan Hospital of Wuhan University; Wuhan, 430071 China
| | - Yuanlong Xie
- Department of Orthopaedics; Zhongnan Hospital of Wuhan University; Wuhan, 430071 China
| | - Lingfei Xiao
- Department of Orthopaedics; Zhongnan Hospital of Wuhan University; Wuhan, 430071 China
| | - Lin Cai
- Department of Orthopaedics; Zhongnan Hospital of Wuhan University; Wuhan, 430071 China
| | - Zhaocheng Ma
- College of Horticulture and Forestry Sciences; Huazhong Agricultural University, Key Laboratory of Horticultural Plant Biology, Ministry of Education; Wuhan, 430070 China
| |
Collapse
|
5
|
Sun J, Mou C, Shi Q, Chen B, Hou X, Zhang W, Li X, Zhuang Y, Shi J, Chen Y, Dai J. Controlled release of collagen-binding SDF-1α from the collagen scaffold promoted tendon regeneration in a rat Achilles tendon defect model. Biomaterials 2018; 162:22-33. [DOI: 10.1016/j.biomaterials.2018.02.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 01/21/2018] [Accepted: 02/02/2018] [Indexed: 10/18/2022]
|
6
|
Jin GZ, Kim HW. Effects of Type I Collagen Concentration in Hydrogel on the Growth and Phenotypic Expression of Rat Chondrocytes. Tissue Eng Regen Med 2017; 14:383-391. [PMID: 30603494 PMCID: PMC6171609 DOI: 10.1007/s13770-017-0060-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 05/17/2017] [Accepted: 05/23/2017] [Indexed: 11/25/2022] Open
Abstract
It is controversial whether type I collagen itself can maintain and improve chondrogenic phenotype of chondrocytes in a three-dimensional (3D) environment. In this study, we examined the effect of type I collagen concentration in hydrogel (0.5, 1, and 2 mg/ml) on the growth and phenotype expression of rat chondrocytes in vitro. All collagen hydrogels showed substantial contractions during culture, in a concentration-dependent manner, which was due to the cell proliferation. The cell viability was shown to be the highest in 2 mg/ml collagen gel. The mRNA expression of chondrogenic phenotypes, including SOX9, type II collagen, and aggrecan, was significantly up-regulated, particularly in 1 mg/ml collagen gel. Furthermore, the production of type II collagen and glycosaminoglycan (GAG) content was also enhanced. The results suggest that type I collagen hydrogel is not detrimental to, but may be useful for, the chondrocyte culture for cartilage tissue engineering.
Collapse
Affiliation(s)
- Guang-Zhen Jin
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, 31116 Korea
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116 Korea
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, 31116 Korea
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116 Korea
- Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan, 31116 Korea
| |
Collapse
|
7
|
Abstract
Tendons connect muscles to bones, ensuring joint movement. With advanced age, tendons become more prone to degeneration followed by injuries. Tendon repair often requires lengthy periods of rehabilitation, especially in elderly patients. Existing medical and surgical treatments often fail to regain full tendon function. The development of novel treatment methods has been hampered due to limited understanding of basic tendon biology. Recently, it was discovered that tendons, similar to other mesenchymal tissues, contain tendon stem/progenitor cells (TSPCs) which possess the common stem cell properties. The current strategies for enhancing tendon repair consist mainly of applying stem cells, growth factors, natural and artificial biomaterials alone or in combination. In this review, we summarise the basic biology of tendon tissues and provide an update on the latest repair proposals for tendon tears.
Cite this article: EFORT Open Rev 2017;2:332-342. DOI: 10.1302/2058-5241.2.160075
Collapse
Affiliation(s)
- Fan Wu
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Michael Nerlich
- Department of Trauma Surgery, University Regensburg Medical Center, Regensburg, Germany
| | - Denitsa Docheva
- Experimental Trauma Surgery, Department of Trauma Surgery, University Regensburg Medical Center, Regensburg, Germany and Department of Medical Biology, Medical University-Plovdiv, Plovdiv, Bulgaria
| |
Collapse
|
8
|
Bonfrate V, Manno D, Serra A, Salvatore L, Sannino A, Buccolieri A, Serra T, Giancane G. Enhanced electrical conductivity of collagen films through long-range aligned iron oxide nanoparticles. J Colloid Interface Sci 2017; 501:185-191. [PMID: 28456102 DOI: 10.1016/j.jcis.2017.04.067] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 04/19/2017] [Accepted: 04/21/2017] [Indexed: 11/18/2022]
Abstract
The development of biocompatible collagen substrates able to conduct electric current along specific pathways represent an appealing issue in tissue engineering, since it is well known that electrical stimuli significantly affects important cell behaviour, such as proliferation, differentiation, directional migration, and, therefore, tissue regeneration. In this work, a cheap and easy approach was proposed to produce collagen-based films exhibiting enhanced electrical conductivity, through the simple manipulation of a weak external magnetic trigger. Paramagnetic iron oxide nanoparticles (NPs) capped by a biocompatible polyethylene-glycol coating were synthetized by a co-precipitation and solvothermic method and sprayed onto a collagen suspension. The system was then subjected to a static external magnetic field in order to conveniently tune NPs organization. Under the action of the external stimulus, NPs were induced to orient along the magnetic field lines, forming long-range aligned micropatterns within the collagen matrix. Drying of the substrate following water evaporation permanently blocked the magnetic architecture produced, thereby preserving NPs organization even after magnetic field removal. Electrical conductivity measurements clearly showed that the presence of such a magnetic framework endowed collagen with marked conductive properties in specific directions. The biocompatibility of the paramagnetic collagen films was also demonstrated by MTT cell cytotoxicity test.
Collapse
Affiliation(s)
- Valentina Bonfrate
- Department of Engineering for Innovation, University of Salento, Via Per Arnesano, Lecce, Italy
| | - Daniela Manno
- Department of Mathematics & Physics "Ennio De Giorgi", University of Salento, Via Per Arnesano, Lecce, Italy
| | - Antonio Serra
- Department of Mathematics & Physics "Ennio De Giorgi", University of Salento, Via Per Arnesano, Lecce, Italy
| | - Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Via Per Arnesano, Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Via Per Arnesano, Lecce, Italy
| | - Alessandro Buccolieri
- Biological and Environmental Sciences and Technologies, University of Salento, Via Per Arnesano, Lecce, Italy
| | - Tiziano Serra
- AO Research Institute, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Gabriele Giancane
- Department of Cultural Heritage, University of Salento, Via D. Birago, 64, Lecce, Italy.
| |
Collapse
|
9
|
Dong C, Lv Y. Application of Collagen Scaffold in Tissue Engineering: Recent Advances and New Perspectives. Polymers (Basel) 2016; 8:polym8020042. [PMID: 30979136 PMCID: PMC6432532 DOI: 10.3390/polym8020042] [Citation(s) in RCA: 383] [Impact Index Per Article: 47.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 01/24/2016] [Accepted: 01/27/2016] [Indexed: 12/11/2022] Open
Abstract
Collagen is the main structural protein of most hard and soft tissues in animals and the human body, which plays an important role in maintaining the biological and structural integrity of the extracellular matrix (ECM) and provides physical support to tissues. Collagen can be extracted and purified from a variety of sources and offers low immunogenicity, a porous structure, good permeability, biocompatibility and biodegradability. Collagen scaffolds have been widely used in tissue engineering due to these excellent properties. However, the poor mechanical property of collagen scaffolds limits their applications to some extent. To overcome this shortcoming, collagen scaffolds can be cross-linked by chemical or physical methods or modified with natural/synthetic polymers or inorganic materials. Biochemical factors can also be introduced to the scaffold to further improve its biological activity. This review will summarize the structure and biological characteristics of collagen and introduce the preparation methods and modification strategies of collagen scaffolds. The typical application of a collagen scaffold in tissue engineering (including nerve, bone, cartilage, tendon, ligament, blood vessel and skin) will be further provided. The prospects and challenges about their future research and application will also be pointed out.
Collapse
Affiliation(s)
- Chanjuan Dong
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, China.
- Mechanobiology and Regenerative Medicine Laboratory, Bioengineering College, Chongqing University, Chongqing 400044, China.
| | - Yonggang Lv
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, China.
- Mechanobiology and Regenerative Medicine Laboratory, Bioengineering College, Chongqing University, Chongqing 400044, China.
| |
Collapse
|
10
|
Manescu A, Giuliani A, Mohammadi S, Tromba G, Mazzoni S, Diomede F, Zini N, Piattelli A, Trubiani O. Osteogenic potential of dualblocks cultured with human periodontal ligament stem cells: in vitro and synchrotron microtomography study. J Periodontal Res 2015; 51:112-24. [PMID: 26094874 DOI: 10.1111/jre.12289] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND OBJECTIVE In the present study, the early stages of in vitro bone formation in collagenated porcine scaffolds cultured with human periodontal ligament cells were investigated. The comparison between the osteogenic potential of this structure in basal and differentiating culture media was explored to predict the mechanism of its biological behavior as graft in human defect. Results were validated by synchrotron radiation X-Ray phase contrast computed microtomography (micro-CT). As the periodontal disease plays a key role in systemic and oral diseases, it is crucial to find advanced therapeutic clinical interventions to repair periodontal defects. This has been recently explored using cells and tissues developed in vitro that should ideally be immunologically, functionally, structurally and mechanically identical to the native tissue. MATERIAL AND METHODS In vitro cultures of human periodontal ligament cells, easily obtained by scraping of alveolar crestal and horizontal fibers of the periodontal ligament, were seeded on to collagenated porcine blocks constituted by natural cancellous and cortical bone. 3D images were obtained by synchrotron radiation micro-CT and processed with a phase-retrieval algorithm based on the transport of intensity equation. RESULTS Starting from the second week of culture, newly formed mineralized bone was detected in all the scaffolds, both in basal and differentiating media. Bone mineralization was proved to occur preferentially in the trabecular portion and in differentiating media. CONCLUSION The chosen method, supported by phase contrast micro-CT analysis, successfully and quantitatively monitored the early stages of bone formation and the rate of the bioscaffold resorption in basal and differentiating culture media.
Collapse
Affiliation(s)
- A Manescu
- Dipartimento di Scienze Cliniche Specialistiche e Odontostomatologiche, Sezione di Biochimica, Biologia e Fisica, Università Politecnica delle Marche, Ancona, Italy
| | - A Giuliani
- Dipartimento di Scienze Cliniche Specialistiche e Odontostomatologiche, Sezione di Biochimica, Biologia e Fisica, Università Politecnica delle Marche, Ancona, Italy
| | - S Mohammadi
- Sincrotrone Trieste S.C.p.A, Basovizza (Trieste), Italy
| | - G Tromba
- Sincrotrone Trieste S.C.p.A, Basovizza (Trieste), Italy
| | - S Mazzoni
- Dipartimento di Scienze Cliniche Specialistiche e Odontostomatologiche, Sezione di Biochimica, Biologia e Fisica, Università Politecnica delle Marche, Ancona, Italy
| | - F Diomede
- Department of Medical, Oral and Biotechnological Sciences, Laboratory of Stem Cells and Regenerative Medicine, University of Chieti-Pescara, Chieti, Italy
| | - N Zini
- National Research Council of Italy, IGM and SC Laboratory of Musculoskeletal Cell Biology, IOR, Bologna, Italy
| | - A Piattelli
- Department of Medical, Oral and Biotechnological Sciences, Laboratory of Stem Cells and Regenerative Medicine, University of Chieti-Pescara, Chieti, Italy
| | - O Trubiani
- Department of Medical, Oral and Biotechnological Sciences, Laboratory of Stem Cells and Regenerative Medicine, University of Chieti-Pescara, Chieti, Italy
| |
Collapse
|
11
|
Demange MK, de Almeida AM, Rodeo SA. Updates in biological therapies for knee injuries: tendons. Curr Rev Musculoskelet Med 2014; 7:239-46. [PMID: 24957507 DOI: 10.1007/s12178-014-9230-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Tendons are subjected to tendinopathies caused by inflammation, degeneration, and weakening of the tendon, due to overuse and trauma, which may eventually lead to tendon rupture. Recently, there has been increasing interest in biological approaches to augment tissue healing. Tendon healing occurs through a dynamic process with inflammation, cellular proliferation, and tissue remodeling. In this review article, we discuss the more frequently proposed biological therapies for tendon injuries as platelet-rich plasma, mesenchymal stem cells, extracorporeal shockwave, and scaffolds.
Collapse
Affiliation(s)
- Marco Kawamura Demange
- Knee Surgery Division, Hospital das Clínicas, Orthopedic Surgery, Faculty of Medicine, University of São Paulo - Brazil, São Paulo, Brazil,
| | | | | |
Collapse
|
12
|
Abstract
Tendinopathy is a debilitating musculoskeletal
condition which can cause significant pain and lead to complete rupture
of the tendon, which often requires surgical repair. Due in part
to the large spectrum of tendon pathologies, these disorders continue
to be a clinical challenge. Animal models are often used in this
field of research as they offer an attractive framework to examine
the cascade of processes that occur throughout both tendon pathology and
repair. This review discusses the structural, mechanical, and biological
changes that occur throughout tendon pathology in animal models,
as well as strategies for the improvement of tendon healing. Cite this article: Bone Joint Res 2014;3:193–202.
Collapse
Affiliation(s)
- M W Hast
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
| | - A Zuskov
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
| | - L J Soslowsky
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
| |
Collapse
|
13
|
Oryan A, Moshiri A, Parizi AM, Maffulli N. Implantation of a novel biologic and hybridized tissue engineered bioimplant in large tendon defect: an in vivo investigation. Tissue Eng Part A 2013; 20:447-65. [PMID: 24004331 DOI: 10.1089/ten.tea.2013.0053] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Surgical reconstruction of large Achilles tendon defects is technically demanding. There is no standard method, and tissue engineering may be a valuable option. We investigated the effects of 3D collagen and collagen-polydioxanone sheath (PDS) implants on a large tendon defect model in rabbits. Ninety rabbits were divided into three groups: control, collagen, and collagen-PDS. In all groups, 2 cm of the left Achilles tendon were excised and discarded. A modified Kessler suture was applied to all injured tendons to retain the gap length. The control group received no graft, the treated groups were repaired using the collagen only or the collagen-PDS prostheses. The bioelectrical characteristics of the injured areas were measured at weekly intervals. The animals were euthanized at 60 days after the procedure. Gross, histopathological and ultrastructural morphology and biophysical characteristics of the injured and intact tendons were investigated. Another 90 pilot animals were also used to investigate the inflammatory response and mechanism of graft incorporation during tendon healing. The control tendons showed severe hyperemia and peritendinous adhesion, and the gastrocnemius muscle of the control animals showed severe atrophy and fibrosis, with a loose areolar connective tissue filling the injured area. The tendons receiving either collagen or collagen-PDS implants showed lower amounts of peritendinous adhesion, hyperemia and muscle atrophy, and a dense tendon filled the defect area. Compared to the control tendons, application of collagen and collagen-PDS implants significantly improved water uptake, water delivery, direct transitional electrical current and tissue resistance to direct transitional electrical current. Compared to the control tendons, both prostheses showed significantly increased diameter, density and alignment of the collagen fibrils and maturity of the tenoblasts at ultrastructure level. Both prostheses influenced favorably tendon healing compared to the control tendons, with no significant differences between collagen and collagen-PDS groups. Implantation of the 3D collagen and collagen-PDS implants accelerated the production of a new tendon in the defect area, and may become a valuable option in clinical practice.
Collapse
Affiliation(s)
- Ahmad Oryan
- 1 Department of Pathology, School of Veterinary Medicine, Shiraz University , Shiraz, Iran
| | | | | | | |
Collapse
|
14
|
Giuliani A, Moroncini F, Mazzoni S, Belicchi MLC, Villa C, Erratico S, Colombo E, Calcaterra F, Brambilla L, Torrente Y, Albertini G, Della Bella S. Polyglycolic acid-polylactic acid scaffold response to different progenitor cell in vitro cultures: a demonstrative and comparative X-ray synchrotron radiation phase-contrast microtomography study. Tissue Eng Part C Methods 2013; 20:308-16. [PMID: 23879738 DOI: 10.1089/ten.tec.2013.0213] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Spatiotemporal interactions play important roles in tissue development and function, especially in stem cell-seeded bioscaffolds. Cells interact with the surface of bioscaffold polymers and influence material-driven control of cell differentiation. In vitro cultures of different human progenitor cells, that is, endothelial colony-forming cells (ECFCs) from a healthy control and a patient with Kaposi sarcoma (an angioproliferative disease) and human CD133+ muscle-derived stem cells (MSH 133+ cells), were seeded onto polyglycolic acid-polylactic acid scaffolds. Three-dimensional (3D) images were obtained by X-ray phase-contrast microtomography (micro-CT) and processed with the Modified Bronnikov Algorithm. The method enabled high spatial resolution detection of the 3D structural organization of cells on the bioscaffold and evaluation of the way and rate at which cells modified the construct at different time points from seeding. The different cell types displayed significant differences in the proliferation rate. In conclusion, X-ray synchrotron radiation phase-contrast micro-CT analysis proved to be a useful and sensitive tool to investigate the spatiotemporal pattern of progenitor cell organization on a bioscaffold.
Collapse
Affiliation(s)
- Alessandra Giuliani
- 1 Dipartimento di Scienze Cliniche Specialistiche e Odontostomatologiche, Università Politecnica delle Marche , Ancona, Italy
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Novel application of a tissue-engineered collagen-based three-dimensional bio-implant in a large tendon defect model: a broad-based study with high value in translational medicine. Tissue Cell 2013; 45:282-94. [PMID: 23627994 DOI: 10.1016/j.tice.2013.03.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 03/27/2013] [Accepted: 03/27/2013] [Indexed: 11/21/2022]
Abstract
This study was designed to investigate the effectiveness of a novel tissue-engineered three-dimensional collagen implant on healing of a large tendon-defect model, in vivo. Forty rabbits were divided into two equal groups: treated and control. A 2cm full-thickness gap was created in the left Achilles tendons of all the rabbits. To maintain the gap at the desired length (2cm), a Kessler suture was anchored within the proximal and distal ends of the remaining tendon. In the treated group a collagen implant was inserted in the gap while in the control group the gap was left unfilled. At weekly intervals the animals were examined clinically and their Achilles tendons tested bioelectrically. The hematological parameters and the serum Platelet-Derived Growth Factor of the animals were analyzed at 60 days post injury (DPI) immediately prior to euthanasia. Their injured (left) and normal contralateral Achilles tendons were harvested and examined at gross morphologic level before being subjected to biomechanical testing, and biophysical and biochemical analysis. The treated animals showed superior weight-bearing and greater physical activity than their controls. New dense tendinous tissue with a transverse diameter comparable to that of intact tendons filled the defect area of the treated tendons and had entirely replaced the collagen implant, at 60 DPI. In control lesions the defect was filled with loose areolar connective tissue similar to subcutaneous fascia. Treatment significantly improved the electrical resistance, dry matter, hydroxyproline content, water uptake and water delivery characteristics, of the healing tissue, as well as maximum load, yield load, maximum stress, yield stress and modulus of elasticity of the injured treated tendons compared to those of the control tendons (P<0.05). Use of this three-dimensional collagen implant improved the healing of large tendon defects in rabbits.
Collapse
|