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Albahrawy M, Abouelnasr K, Mosbah E, Zaghloul A, Abass M. Biostimulation effect of platelet-rich fibrin augmented with decellularized bovine pericardium on full-thickness cutaneous wound healing in Donkeys (Equus asinus). BMC Vet Res 2023; 19:166. [PMID: 37730587 PMCID: PMC10512557 DOI: 10.1186/s12917-023-03733-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 09/13/2023] [Indexed: 09/22/2023] Open
Abstract
AIM The current research aimed to evaluate the potential effect of adding platelet-rich fibrin (PRF) to the decellularized bovine pericardium (DBP) on the distal limb of donkeys' full-thickness cutaneous wounds healing (Equus asinus). MATERIALS AND METHODS Healthy male donkeys (n = 12) were used in this study. Under general anesthesia, 6 cm2 full-thickness incisions were made on the middle dorsolateral surface of both forelimbs' metacarpi. The left forelimbs were control wounds, while the right wounds were treated with PRF/DBP. Control wounds were bandaged with a standard dressing after saline irrigation and were evaluated at days 4, 7, 10, 13, 16, 19, 22, 25, and 28 post-wounding. PRF/DBP-treated wounds were dressed with a combination of PRF/DBP at the first, second, and third weeks post-wounding. Clinical and histopathological examinations of the wounds were performed to assess the healing process. Additionally, the immunohistochemical evaluation and gene expression profiles of myofibroblastic and angiogenic genes (transforming growth factor-β1, vascular endothelial growth factor-A, fibroblast growth factor 7 (FGF-7), and collagen type 3α1) were analyzed. RESULTS PRF/DBP wounds had a significantly faster healing process (61.3 ± 2.6 days) than control wounds (90.3 ± 1.4 days) (p < 0.05). The immunohistochemical examination and gene expression profile revealed significant enrichment in PRF/DBP wounds compared to control wounds. CONCLUSION PRF/DBP dressing can be considered a natural and cost-effective biomaterial for enhancing the recovery of donkeys' distal limb injuries.
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Affiliation(s)
- Mohammed Albahrawy
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Khaled Abouelnasr
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Esam Mosbah
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Adel Zaghloul
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Marwa Abass
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt.
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Saiding Q, Chen Y, Wang J, Pereira CL, Sarmento B, Cui W, Chen X. Abdominal wall hernia repair: from prosthetic meshes to smart materials. Mater Today Bio 2023; 21:100691. [PMID: 37455815 PMCID: PMC10339210 DOI: 10.1016/j.mtbio.2023.100691] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/15/2023] [Accepted: 06/03/2023] [Indexed: 07/18/2023] Open
Abstract
Hernia reconstruction is one of the most frequently practiced surgical procedures worldwide. Plastic surgery plays a pivotal role in reestablishing desired abdominal wall structure and function without the drawbacks traditionally associated with general surgery as excessive tension, postoperative pain, poor repair outcomes, and frequent recurrence. Surgical meshes have been the preferential choice for abdominal wall hernia repair to achieve the physical integrity and equivalent components of musculofascial layers. Despite the relevant progress in recent years, there are still unsolved challenges in surgical mesh design and complication settlement. This review provides a systemic summary of the hernia surgical mesh development deeply related to abdominal wall hernia pathology and classification. Commercial meshes, the first-generation prosthetic materials, and the most commonly used repair materials in the clinic are described in detail, addressing constrain side effects and rational strategies to establish characteristics of ideal hernia repair meshes. The engineered prosthetics are defined as a transit to the biomimetic smart hernia repair scaffolds with specific advantages and disadvantages, including hydrogel scaffolds, electrospinning membranes, and three-dimensional patches. Lastly, this review critically outlines the future research direction for successful hernia repair solutions by combing state-of-the-art techniques and materials.
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Affiliation(s)
- Qimanguli Saiding
- Shanghai Key Laboratory of Embryo Original Diseases, The International Peace Maternal and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, 910 Hengshan Road, Shanghai, 200030, PR China
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, PR China
| | - Yiyao Chen
- Shanghai Key Laboratory of Embryo Original Diseases, The International Peace Maternal and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, 910 Hengshan Road, Shanghai, 200030, PR China
| | - Juan Wang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, PR China
| | - Catarina Leite Pereira
- I3S – Instituto de Investigação e Inovação Em Saúde and INEB – Instituto de Engenharia Biomédica, Universidade Do Porto, Rua Alfredo Allen 208, 4200-135, Porto, Portugal
| | - Bruno Sarmento
- I3S – Instituto de Investigação e Inovação Em Saúde and INEB – Instituto de Engenharia Biomédica, Universidade Do Porto, Rua Alfredo Allen 208, 4200-135, Porto, Portugal
- IUCS – Instituto Universitário de Ciências da Saúde, CESPU, Rua Central de Gandra 1317, 4585-116, Gandra, Portugal
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, PR China
| | - Xinliang Chen
- Shanghai Key Laboratory of Embryo Original Diseases, The International Peace Maternal and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, 910 Hengshan Road, Shanghai, 200030, PR China
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Zhao C, Wu X, Chen G, Wang F, Ren J. AuNPs-PCL nanocomposite accelerated abdominal wound healing through photothermal effect and improving cell adhesion. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:2035-2049. [PMID: 30235107 DOI: 10.1080/09205063.2018.1526460] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Accelerating wound healing with modified biomaterial has been an attracting field in both material science and medicine. Enhanced cell adhesion could be acquired by improving surface hydrophilicity, which contributes to accelerating wound healing. Chemical reaction has been used for surface modification, but this study used a simple and nontoxic method to improve the hydrophilicity. Polycaprolactone (PCL) scaffold has been regarded as promising material for wound healing while its surface is hydrophobic. Our study demonstrated enhanced hydrophilicity of PCL with AuNPs coating. AuNPs has good biocompatibility and excellent photothermal effect. The coating of AuNPs not only improved the cell adhesion, but also gave PCL the ability to inhibit the growth of bacteria. Animal study showed that the nanocomposites decreased lymphocytes and neutrophils, increased neovascularization and accelerated the abdominal wound healing, which was attributed to improved hydrophilicity and the antibacterial ability. In conclusion, we demonstrated that the nanocomposite could be used as a potential scaffold for cell adhesion and wound healing, and the role of AuNPs was highlighted as a kind of outstanding supplement.
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Affiliation(s)
- Cheng Zhao
- a Department of Surgery , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Xiuwen Wu
- a Department of Surgery , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Guopu Chen
- a Department of Surgery , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Feng Wang
- b Department of Surgery , Jinling Hospital , Nanjing , China
| | - Jianan Ren
- a Department of Surgery , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
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Linde KJ, Kelleher TR, Perry JA. Biological implant-associated granulomatous inflammation resulting in secondary hypercalcemia and azotemia in a dog. Clin Case Rep 2018; 6:1801-1806. [PMID: 30214767 PMCID: PMC6132143 DOI: 10.1002/ccr3.1661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 06/03/2018] [Accepted: 06/05/2018] [Indexed: 12/29/2022] Open
Abstract
Implant associated granulomatous inflammation causing hypercalcemia can occur following use of commercial xenogeneic pericardial tissue patches in dogs. Removal of the implant can result in resolution of the hypercalcemia, suggesting a causal relationship between the tissue reaction to a xenogeneic implant and development of hypercalcemia.
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iBTA-induced bovine Biosheet for repair of abdominal wall defects in a beagle model: proof of concept. Hernia 2018; 22:1033-1039. [PMID: 30022282 DOI: 10.1007/s10029-018-1799-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 07/13/2018] [Indexed: 12/21/2022]
Abstract
INTRODUCTION We evaluated the usefulness of xeno-Biosheets, an in-body tissue architecture-induced bovine collagenous sheet, as repair materials for abdominal wall defects in a beagle model. MATERIALS AND METHODS Biosheets were prepared by embedding cylindrical molds into subcutaneous pouches of three Holstein cows for 2-3 months and stored in 70% ethanol. The Biosheets were 0.5 mm thick, cut into 2 cm × 2 cm, and implanted to replace defects of the same size in the abdominal wall of nine beagles. The abdominal wall and Biosheets were harvested and subjected to histological evaluation at 1, 3, and 5 months after implantation (n = 3 each). RESULTS The Biosheet and bovine pericardiac patch (control) were not stressed during the suture operation and did not split, and patches were easily implanted on defective wounds. After implantation, the patch did not fall off and was not perforated, and healing was observed nacroscopically in all cases. During the first month of implantation, accumulation of inflammatory cells was observed along with decomposition around the Biosheet. Decomposition was almost complete after 3 months, and the Biosheet was replaced by autologous collagenous connective tissue without rejection. After 5 months, the abdominal wall muscle elongated from the periphery of the newly formed collagen layer and the peritoneum was formed on the peritoneal cavity surface. Regeneration of almost all layers of the abdominal wall was observed. However, almost all pericardium patches were remained even at 5 months with inflammation. CONCLUSION Bovine Biosheets requiring no special post-treatment can be useful as off-the-shelf materials for abdominal wall repair.
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Khorramirouz R, Go JL, Noble C, Jana S, Maxson E, Lerman A, Young MD. A novel surgical technique for a rat subcutaneous implantation of a tissue engineered scaffold. Acta Histochem 2018. [PMID: 29519681 PMCID: PMC5914524 DOI: 10.1016/j.acthis.2018.02.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Objectives Subcutaneous implantations in small animal models are currently required for preclinical studies of acellular tissue to evaluate biocompatibility, including host recellularization and immunogenic reactivity. Methods Three rat subcutaneous implantation methods were evaluated in six Sprague Dawley rats. An acellular xenograft made from porcine pericardium was used as the tissue-scaffold. Three implantation methods were performed; 1) Suture method is where a tissue-scaffold was implanted by suturing its border to the external oblique muscle, 2) Control method is where a tissue-scaffold was implanted without any suturing or support, 3) Frame method is where a tissue-scaffold was attached to a circular frame composed of polycaprolactone (PCL) biomaterial and placed subcutaneously. After 1 and 4 weeks, tissue-scaffolds were explanted and evaluated by hematoxylin and eosin (H&E), Masson’s trichrome, Picrosirius Red, transmission electron microscopy (TEM), immunohistochemistry, and mechanical testing. Results Macroscopically, tissue-scaffold degradation with the suture method and tissue-scaffold folding with the control method were observed after 4 weeks. In comparison, the frame method demonstrated intact tissue scaffolds after 4 weeks. H&E staining showed progressive cell repopulation over the course of the experiment in all groups with acute and chronic inflammation observed in suture and control methods throughout the duration of the study. Immunohistochemistry quantification of CD3, CD 31, CD 34, CD 163, and αSMA showed a statistically significant differences between the suture, control and frame methods (P < 0.05) at both time points. The average tensile strength was 4.03 ± 0.49, 7.45 ± 0.49 and 5.72 ± 1.34 (MPa) after 1 week and 0.55 ± 0.26, 0.12 ± 0.03 and 0.41 ± 0.32 (MPa) after 4 weeks in the suture, control, and frame methods; respectively. TEM analysis showed an increase in inflammatory cells in both suture and control methods following implantation. Conclusion Rat subcutaneous implantation with the frame method was performed with success and ease. The surgical approach used for the frame technique was found to be the best methodology for in vivo evaluation of tissue engineered acellular scaffolds, where the frame method did not compromise mechanical strength, but it reduced inflammation significantly.
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D'Amore A, Fazzari M, Jiang HB, Luketich SK, Luketich ME, Hoff R, Jacobs DL, Gu X, Badylak SF, Freeman BA, Wagner WR. Nitro-Oleic Acid (NO 2-OA) Release Enhances Regional Angiogenesis in a Rat Abdominal Wall Defect Model. Tissue Eng Part A 2018; 24:889-904. [PMID: 29187125 DOI: 10.1089/ten.tea.2017.0349] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Ventral hernia is often addressed surgically by the placement of prosthetic materials, either synthetic or from allogeneic and xenogeneic biologic sources. Despite advances in surgical approaches and device design, a number of postsurgical limitations remain, including hernia recurrence, mesh encapsulation, and reduced vascularity of the implanted volume. The in situ controlled release of angiogenic factors from a scaffold facilitating abdominal wall repair might address some of these issues associated with suboptimal tissue reconstruction. Furthermore, a biocomposite material that combines the favorable mechanical properties achievable with synthetic materials and the bioactivity associated with xenogeneic tissue sources would be desirable. In this report, an abdominal wall repair scaffold has been designed based on a microfibrous, elastomeric poly(ester carbonate)urethane urea matrix integrated with a hydrogel derived from decellularized porcine dermis (extracellular matrix [ECM] gel) and poly(lactic-co-glycolic acid) (PLGA) microspheres loaded with nitro-oleic acid (NO2-OA). NO2-OA is an electrophilic fatty acid nitro-alkene derivative that, under hypoxic conditions, induces angiogenesis. This scaffold was utilized to repair a rat abdominal wall partial thickness defect, hypothesizing that the nitro-fatty acid release would facilitate increased angiogenesis at the 8-week endpoint. The quantification of neovascularization was conducted by novel methodologies to assess vessel morphology and spatial distribution. The repaired abdominal wall defects were evaluated by histopathologic methods, including quantification of the foreign body response and cellular ingrowth. The results showed that NO2-OA release was associated with significantly improved regional angiogenesis. The combined biohybrid scaffold and NO2-OA-controlled release strategy also reduced scaffold encapsulation, increased wall thickness, and enhanced cellular infiltration. More broadly, the three components of the composite scaffold design (ECM gel, polymeric fibers, and PLGA microparticles) enable the tuning of performance characteristics, including scaffold bioactivity, degradation, mechanics, and drug release profile, all decisive factors to better address current limitations in abdominal wall repair or other soft tissue augmentation procedures.
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Affiliation(s)
- Antonio D'Amore
- 1 Departments of Bioengineering and Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania.,2 Fondazione RiMED , Palermo, Italy .,3 Dipartimento Innovazione Industriale e Digitale (DIID), Università di Palermo , Palermo, Italy
| | - Marco Fazzari
- 2 Fondazione RiMED , Palermo, Italy .,4 Department of Pharmacology and Chemical Biology, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Hong-Bin Jiang
- 1 Departments of Bioengineering and Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Samuel K Luketich
- 5 Department of Chemical Engineering, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Michael E Luketich
- 5 Department of Chemical Engineering, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Richard Hoff
- 1 Departments of Bioengineering and Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Daniel L Jacobs
- 1 Departments of Bioengineering and Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Xinzhu Gu
- 1 Departments of Bioengineering and Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Stephen F Badylak
- 1 Departments of Bioengineering and Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Bruce A Freeman
- 4 Department of Pharmacology and Chemical Biology, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - William R Wagner
- 1 Departments of Bioengineering and Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania.,5 Department of Chemical Engineering, University of Pittsburgh , Pittsburgh, Pennsylvania
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Herrick SE, Mutsaers SE. The Potential of Mesothelial Cells in Tissue Engineering and Regenerative Medicine Applications. Int J Artif Organs 2018; 30:527-40. [PMID: 17628854 DOI: 10.1177/039139880703000611] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Injury to the serosa through injurious agents such as radiation, surgery, infection and disease results in the loss of the protective surface mesothelium and often leads to fibrous adhesion formation. Mechanisms that increase the rate of mesothialisation are therefore actively being investigated in order to reduce the formation of adhesions. These include intraperitoneal delivery of cultured mesothelial cells as well as administration of factors that are known to increase mesothelial proliferation and migration. An exciting alternative that has only recently received attention, is the possible role of mesothelial progenitor cells in the repair and regeneration of denuded serosal areas. Accumulating evidence suggests that such a population exists and under certain conditions is able to form a number of defined cell types indicating a degree of plasticity. Such properties may explain the extensive use of mesothelial cells in various tissue engineering applications including the development of vascular conduits and peripheral nerve replacements. It is likely that with the rapid explosion in the fields of tissue engineering and regenerative medicine, a greater understanding of the potential of mesothelial progenitor cells to repair, replace and possibly regenerate damaged or defective tissue will be uncovered.
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Affiliation(s)
- S E Herrick
- School of Medicine, Faculty of Medical and Human Sciences, University of Manchester, Oxford Road, Manchester, UK.
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Sugimura Y, Schmidt AK, Lichtenberg A, Assmann A, Akhyari P. * A Rat Model for the In Vivo Assessment of Biological and Tissue-Engineered Valvular and Vascular Grafts. Tissue Eng Part C Methods 2017; 23:982-994. [PMID: 28805140 DOI: 10.1089/ten.tec.2017.0215] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The demand for an improvement of the biocompatibility and durability of vascular and valvular implants requires translational animal models to study the in vivo fate of cardiovascular grafts. In the present article, a review on the development and application of a microsurgical rat model of infrarenal implantation of aortic grafts and aortic valved conduits is provided. By refinement of surgical techniques and inclusion of hemodynamic considerations, a functional model has been created, which provides a modular platform for the in vivo assessment of biological and tissue-engineered grafts. Through optional addition of procalcific diets, disease-inducing agents, and genetic modifications, complex multimorbidity scenarios mimicking the clinical reality in cardiovascular patients can be simulated. Applying this model, crucial aspects of the biocompatibility, biofunctionality and degeneration of vascular and valvular implants in dependency on graft preparation, and modification as well as systemic antidegenerative treatment of the recipient have been and will be addressed.
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Affiliation(s)
- Yukiharu Sugimura
- 1 Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University , Düsseldorf, Germany
| | - Anna Kathrin Schmidt
- 1 Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University , Düsseldorf, Germany
| | - Artur Lichtenberg
- 1 Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University , Düsseldorf, Germany
| | - Alexander Assmann
- 1 Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University , Düsseldorf, Germany .,2 Biomaterials Innovation Research Center , Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Massachusetts
| | - Payam Akhyari
- 1 Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University , Düsseldorf, Germany
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Liu Z, Li S, Su L, Sun K, Wu X, Wu F, Huang W, Yang L, Tang J, He H. Novel superhydrophilic poly(l-lactic acid-co-ε-caprolactone)/fibrinogen electrospun patch for rat abdominal wall reconstruction. J Biomater Appl 2015; 30:230-8. [PMID: 25791683 DOI: 10.1177/0885328215577732] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A novel superhydrophilic hybrid scaffold was created by electrospinning a mixture of poly(l-lactic acid-co-ε-caprolactone) and formulated fibrinogen. The hybrid scaffolds possess the combined benefits of each individual component, such as moderate mechanical strength and excellent biocompatibility. In vitro studies also revealed that endothelial cells seeded on the hybrid scaffolds achieved a relatively high level of cell attachment after three days of culture and a significant increase in the proliferation rate after seven days of culture, compared with pure fibrinogen or poly(l-lactic acid-co-ε-caprolactone) scaffolds. A comparative study of hybrid and pure poly(l-lactic acid-co-ε-caprolactone) patches was performed in an abdominal wall defect model in rats. In both groups, implants degraded by six months, but muscle reconstruction was only observed in the hybrid patch group.
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Affiliation(s)
- Zhang Liu
- School of Materials Science and Engineering, Shanghai JiaoTong University, Shanghai, China Shanghai Pine & Power Biotech Co., Ltd., Shanghai, China
| | - Shaojie Li
- Department of General Surgery, Huadong Hospital Affiliated to Fudan Univercity, Shanghai, China
| | - Ling Su
- Shanghai Pine & Power Biotech Co., Ltd., Shanghai, China
| | - Kang Sun
- School of Materials Science and Engineering, Shanghai JiaoTong University, Shanghai, China
| | - Xujun Wu
- School of Materials Science and Engineering, Shanghai JiaoTong University, Shanghai, China Shanghai Pine & Power Biotech Co., Ltd., Shanghai, China
| | - Feng Wu
- Shanghai Pine & Power Biotech Co., Ltd., Shanghai, China
| | - Weihong Huang
- Shanghai Pine & Power Biotech Co., Ltd., Shanghai, China
| | - Li Yang
- Shanghai Pine & Power Biotech Co., Ltd., Shanghai, China
| | - Jianxiong Tang
- Department of General Surgery, Huadong Hospital Affiliated to Fudan Univercity, Shanghai, China
| | - Hongbing He
- Shanghai Pine & Power Biotech Co., Ltd., Shanghai, China Institute of Peripheral Vascular Surgery, Fudan University, Shanghai, China
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Dulaurent T, Azoulay T, Goulle F, Dulaurent A, Mentek M, Peiffer RL, Isard PF. Use of bovine pericardium (Tutopatch®) graft for surgical repair of deep melting corneal ulcers in dogs and corneal sequestra in cats. Vet Ophthalmol 2013; 17:91-9. [DOI: 10.1111/vop.12047] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Thomas Dulaurent
- Centre Hospitalier Vétérinaire; 275 Route Impériale Saint-Martin Bellevue 74370 France
| | - Thierry Azoulay
- Clinique Vétérinaire; 28 rue du Faubourg de Saverne Strasbourg 67000 France
| | - Frédéric Goulle
- Clinique Vétérinaire; Parc d'activité Mermoz 19 Avenue de la forêt, Eysines 33320 France
| | - Alice Dulaurent
- Centre Hospitalier Vétérinaire; 275 Route Impériale Saint-Martin Bellevue 74370 France
| | - Marielle Mentek
- Laboratoire HP2; INSERM, U1042; Université J. Fourier; Grenoble 38706 France
| | - Robert L. Peiffer
- Bucks County Animal Ophthalmology; 4895 Gloucester Dr Doylestown PA 18902 USA
| | - Pierre-François Isard
- Centre Hospitalier Vétérinaire; 275 Route Impériale Saint-Martin Bellevue 74370 France
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Hong Y, Takanari K, Amoroso NJ, Hashizume R, Brennan-Pierce EP, Freund JM, Badylak SF, Wagner WR. An elastomeric patch electrospun from a blended solution of dermal extracellular matrix and biodegradable polyurethane for rat abdominal wall repair. Tissue Eng Part C Methods 2011; 18:122-32. [PMID: 21933017 DOI: 10.1089/ten.tec.2011.0295] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
A biodegradable elastomeric scaffold was created by electrospinning a mixed solution of poly(ester urethane)urea (PEUU) and porcine dermal extracellular matrix (dECM) digest, with PEUU included to provide elasticity, flexibility, and mechanical support and dECM used to enhance bioactivity and biocompatibility. Micrographs and differential scanning calorimetry demonstrated partial miscibility between PEUU and dECM. With greater dECM content, scaffolds were found to possess lower breaking strains and suture retention strength, although initial modulus was greater with higher dECM concentrations. The hybrid scaffolds containing 0% to 50% dECM had tensile strengths of 5 to 7 MPa, breaking strains of 138% to 611%, initial moduli of 3 to 11 Mpa, and suture retention strengths of 35 to 59 MPa. When hydrated, scaffolds were found to contract markedly with 50% dECM content. When used in a rat full-thickness abdominal wall replacement model, no herniation, infection, or tissue adhesion was observed after 4 and 8 weeks with a scaffold containing 25% dECM or a control 100% PEUU scaffold. Scaffolds incorporating dECM were significantly thicker at the time of explant, with greater numbers of associated smooth muscle actin-positive staining cells than in the control, but minimal cellular infiltration and remodeling of the scaffold were detected regardless of dECM addition. The processing of dECM and PEUU from a mixed solution thus provided a scaffold with evidence of better bioactivity and with mechanical properties not achievable with digested dECM alone.
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Affiliation(s)
- Yi Hong
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Hong Y, Huber A, Takanari K, Amoroso NJ, Hashizume R, Badylak SF, Wagner WR. Mechanical properties and in vivo behavior of a biodegradable synthetic polymer microfiber-extracellular matrix hydrogel biohybrid scaffold. Biomaterials 2011; 32:3387-94. [PMID: 21303718 DOI: 10.1016/j.biomaterials.2011.01.025] [Citation(s) in RCA: 150] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Accepted: 01/08/2011] [Indexed: 12/17/2022]
Abstract
A biohybrid composite consisting of extracellular matrix (ECM) gel from porcine dermal tissue and biodegradable elastomeric fibers was generated and evaluated for soft tissue applications. ECM gel possesses attractive biocompatibility and bioactivity with weak mechanical properties and rapid degradation, while electrospun biodegradable poly(ester urethane)urea (PEUU) has good mechanical properties but limited cellular infiltration and tissue integration. A concurrent gel electrospray/polymer electrospinning method was employed to create ECM gel/PEUU fiber composites with attractive mechanical properties, including high flexibility and strength. Electron microscopy revealed a structure of interconnected fibrous layers embedded in ECM gel. Tensile mechanical properties could be tuned by altering the PEUU/ECM weight ratio. Scaffold tensile strengths for PEUU/ECM ratios of 67/33, 72/28 and 80/20 ranged from 80 to 187 kPa in the longitudinal axis (parallel to the collecting mandrel axis) and 41-91 kPa in the circumferential axis with 645-938% breaking strains. The 72/28 biohybrid composite and a control scaffold generated from electrospun PEUU alone were implanted into Lewis rats, replacing a full-thickness abdominal wall defect. At 4 wk, no infection or herniation was found at the implant site. Histological staining showed extensive cellular infiltration into the biohybrid scaffold with the newly developed tissue well integrated with the native periphery, while minimal cellular ingress into the electrospun PEUU scaffold was observed. Mechanical testing of explanted constructs showed evidence of substantial remodeling, with composite scaffolds adopting properties more comparable to the native abdominal wall. The described elastic biohybrid material imparts features of ECM gel bioactivity with PEUU strength and handling to provide a promising composite biomaterial for soft tissue repair and replacement.
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Affiliation(s)
- Yi Hong
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
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14
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Moon SJ, Kim DH, Jo JK, Chung JH, Lee JY, Park SY, Kim YT, Park HK, Choi HY, Moon HS. Bladder reconstruction using bovine pericardium in a case of enterovesical fistula. Korean J Urol 2011; 52:150-3. [PMID: 21379435 PMCID: PMC3045723 DOI: 10.4111/kju.2011.52.2.150] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Accepted: 12/08/2010] [Indexed: 12/16/2022] Open
Abstract
The use of graft materials in bladder mucosa has been examined in animal models, but debate exists over which materials are effective. Intestine has been used as a substitute in augmentation cystoplasty for patients with neuropathic bladder, but serious adverse effects of the operation have occurred in some instances. We report a case of a successful repair of an enterovesical fistula by use of bovine pericardium. The patient has remained well for 2.5 years. We suggest that bovine pericardium may be a suitable option as a bladder substitute.
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Affiliation(s)
- Seung Jin Moon
- Department of Urology, Hanyang University College of Medicine, Seoul, Korea
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15
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Morphological and mechanical characteristics of the reconstructed rat abdominal wall following use of a wet electrospun biodegradable polyurethane elastomer scaffold. Biomaterials 2010; 31:3253-65. [PMID: 20138661 DOI: 10.1016/j.biomaterials.2010.01.051] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Accepted: 01/12/2010] [Indexed: 12/31/2022]
Abstract
Although a variety of materials are currently used for abdominal wall repair, general complications encountered include herniation, infection, and mechanical mismatch with native tissue. An approach wherein a degradable synthetic material is ultimately replaced by tissue mechanically approximating the native state could obviate these complications. We report here on the generation of biodegradable scaffolds for abdominal wall replacement using a wet electrospinning technique in which fibers of a biodegradable elastomer, poly(ester urethane)urea (PEUU), were concurrently deposited with electrosprayed serum-based culture medium. Wet electrospun PEUU (wet ePEUU) was found to exhibit markedly different mechanical behavior and to possess an altered microstructure relative to dry processed ePEUU. In a rat model for abdominal wall replacement, wet ePEUU scaffolds (1x2.5 cm) provided a healing result that developed toward approximating physiologic mechanical behavior at 8 weeks. An extensive cellular infiltrate possessing contractile smooth muscle markers was observed together with extensive extracellular matrix (collagens, elastin) elaboration. Control implants of dry ePEUU and expanded polytetrafluoroethylene did not experience substantial cellular infiltration and did not take on the native mechanical anisotropy of the rat abdominal wall. These results illustrate the markedly different in vivo behavior observed with this newly reported wet electrospinning process, offering a potentially useful refinement of an increasingly common biomaterial processing technique.
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16
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Wong CS, Sgarioto M, Owida AA, Yang W, Rosenfeldt FL, Morsi YS. Polyethyleneterephthalate Provides Superior Retention of Endothelial Cells During Shear Stress Compared to Polytetrafluoroethylene and Pericardium. Heart Lung Circ 2006; 15:371-7. [PMID: 17035084 DOI: 10.1016/j.hlc.2006.08.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2006] [Revised: 08/03/2006] [Accepted: 08/03/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND Polyethyleneterephthalate (PET) and polytetrafluoroethylene (PTFE) are polymers successfully used as large diameter arterial grafts for peripheral vascular surgery. However, these prosthetic grafts are rarely used for coronary bypass surgery because of their low patency rates. Endothelialisation of the lumenal surface of these materials may improve their patency. This study aimed to compare the endothelialisation of PET, PTFE and pericardium by examining their seeding efficiency over time and the effect of various shear stresses on retention of endothelial cells. METHODS Ovine endothelial cells at 4x10(5)cells/cm(2) were seeded onto PET, PTFE and pericardium, and cultured for 1-168 hours. Cell coverage was determined via en face immunocytochemistry and cell retention was quantified after being subjected to shear stresses ranging from 0.018 to 0.037N/m(2) for 15, 30 and 60 minutes. RESULTS Endothelial cells adhered to all of the materials one hour post-seeding. PET exhibited better cell retention rate, ranging from 66.9+/-5.6% at 0.018N/m(2) for 15min to 44.7+/-1.9% at 0.037N/m(2) for 60 minutes, when compared to PTFE and pericardium (p<0.0001, three-way ANOVA). CONCLUSION PET shows superior retention of endothelial cells during shear stress compare to PTFE and pericardium.
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Affiliation(s)
- Cynthia S Wong
- Biomechanics and Tissue Engineering Group, IRIS, Swinburne University of Technology, 533-545 Burwood Road, Hawthorn, Vic. 3122, Australia.
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17
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Wei HJ, Chen SC, Chang Y, Hwang SM, Lin WW, Lai PH, Chiang HK, Hsu LF, Yang HH, Sung HW. Porous acellular bovine pericardia seeded with mesenchymal stem cells as a patch to repair a myocardial defect in a syngeneic rat model. Biomaterials 2006; 27:5409-19. [PMID: 16844214 DOI: 10.1016/j.biomaterials.2006.06.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2006] [Accepted: 06/29/2006] [Indexed: 10/24/2022]
Abstract
A patch is often mandatory to repair myocardial defects; however, currently available patches lack the possibility of regeneration. To overcome this limitation, a porous acellular bovine pericardium seeded with BrdU-labeled mesenchymal stem cells (MSCs) was prepared (the MSC patch) to repair a surgically created myocardial defect in the right ventricle of a syngeneic rat model. The bovine pericardium before cell extraction was used as a control (the Control patch). The implanted samples were retrieved at 4- and 12-week postoperatively (n=5 per group at each time point). At retrieval, no aneurysmal dilation of the implanted patches was seen for both studied groups. No apparent tissue adhesion was observed for the MSC patch throughout the entire course of the study, while for the Control patch, two out of the five studied animals at 12-week postoperatively had a filmy adhesion to the chest wall. On the inner (endocardial) surface, intimal thickening was observed for both studied groups; however, no thrombus formation was found. Intact layers of endothelial and mesothelial cells were identified on the inner and outer (epicardial) surfaces of the MSC patch. Smooth muscle cells together with neo-muscle fibers, neo-glycosaminoglycans and neo-capillaries were observed within the pores of the MSC patch. Some cardiomyocytes, which stained positively for BrdU and alpha-sacromeric actin, were observed in the MSC patch, indicating that the implanted MSCs can engraft and differentiate into cardiomyocytes. Additionally, a normality of the local electrograms on the epicardial surface of the MSC patch was observed. In contrast, no apparent tissue regeneration was observed for the Control patch throughout the entire course of the study, while only abnormal electrogram signals were seen on its epicardial surface. In conclusion, the MSC patch may preserve the structure of the ventricular wall while providing the potential for myocardial tissue regeneration.
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Affiliation(s)
- Hao-Ji Wei
- Division of Cardiovascular Surgery, Veterans General Hospital-Taichung, and College of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
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