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Mansour RN, Karimizade A, Enderami SE, Abasi M, Talebpour Amiri F, Jafarirad A, Mellati A. The effect of source animal age, decellularization protocol, and sterilization method on bovine acellular dermal matrix as a scaffold for wound healing and skin regeneration. Artif Organs 2023; 47:302-316. [PMID: 36161305 DOI: 10.1111/aor.14415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Healing the full-thickness skin wounds has remained a challenge. One of the most frequently used grafts for skin regeneration is xenogeneic acellular dermal matrices (ADMs), including bovine ADMs. This study investigated the effect of the source animal age, enzymatic versus non-enzymatic decellularization protocols, and gamma irradiation versus ethylene oxide (EO) sterilization on the scaffold. METHODS ADMs were prepared using the dermises of fetal bovine or calf skins. All groups were decellularized through chemical and mechanical methods, unless T-FADM samples, in which an enzymatic step was added to the decellularization protocol. All groups were sterilized with ethylene oxide (EO), except G-FADM which was sterilized using gamma irradiation. The scaffolds were characterized through scanning electron microscopy, differential scanning calorimetry, tensile test, MTT assay, DNA quantification, and real-time PCR. The performance of the ADMs in wound treatment was also evaluated macroscopically and histologically. RESULTS All ADMs were effectively decellularized. In comparison to FADM (EO-sterilized fetal ADM), morphological, and mechanical properties of G-FADM, T-FADM, and CADM (EOsterilized calf ADM) were changed to different extents. In addition, the CADM and G-FADM were thermally more stable than the FADM and T-FADM. Although all ADMs were noncytotoxic, the wounds of the FADM, T-FADM, and G-FADM groups were contracted to almost 30.0% of the original area on day 7, significantly faster than the CADM (17.5% ± 1.7) and control (12.2% ± 1.59) groups. However, by day 21, all ADMs were mostly closed except for the untreated group (60.1 ± 1.8). CONCLUSION Altogether, fetal source and EO-sterilized samples performed better than calf source and gamma-sterilized samples unless in some mechanical properties. There was no added value in using enzymatic treatment during the decellularization process. Our results suggest that the age, decellularization, and sterilization methods of animal source should be selected based on the clinical requirements.
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Affiliation(s)
- Reyhaneh Nassiri Mansour
- Department of Tissue Engineering and Regenerative Medicine, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ayoob Karimizade
- Department of Tissue Engineering and Regenerative Medicine, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyed Ehsan Enderami
- Immunogenetics Research Center, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mozhgan Abasi
- Department of Tissue Engineering and Regenerative Medicine, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Abdolreza Jafarirad
- Department of Surgery, Zare Psychiatry and Burn Hospital, Mazandaran University of Medical Sciences, Sari, Iran
| | - Amir Mellati
- Department of Tissue Engineering and Regenerative Medicine, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
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Pirayesh A, De Decker I, Richters CD, Paauw NJ, Hoeksema H, Hoekstra MJ, Claes KE, Van Der Lei B, Monstrey S. Comparison of Glyaderm with different dermal substitute matrices in a porcine wound model. JPRAS Open 2022; 34:257-267. [DOI: 10.1016/j.jpra.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 09/29/2022] [Indexed: 11/27/2022] Open
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Co-Graft of Acellular Dermal Matrix and Split Thickness Skin Graft—A New Reconstructive Surgical Method in the Treatment of Hidradenitis Suppurativa. Bioengineering (Basel) 2022; 9:bioengineering9080389. [PMID: 36004913 PMCID: PMC9404734 DOI: 10.3390/bioengineering9080389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/04/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Hidradenitis suppurativa is a chronic disease that significantly reduces patients’ quality of life. Patients are chronically treated with systemic therapies, which are often ineffective. Surgical treatment for severe cases of hidradenitis suppurativa is one option for affected patients. Surgical treatment has its limitations, and wound closure may be particularly problematic. This requires the use of reconstructive techniques. The methods of choice for wound closure are split-thickness skin grafts or local flaps reconstructions. However, each method has its limitations. This is a presentation of a new reconstructive surgical method in hidradenitis suppurativa surgery: the use of a co-graft of Acellular dermal matrix and split thickness skin graft as a novel method in wound closure after wide excisions, based on two cases. The results of this method are very promising: we achieved very fast wound closure with good aesthetic results regarding scar formation. In this paper, we used several examinations: laser speckle analysis, cutometer tests, and health-related quality of life (QoL) questionnaire to check the clinical impact of this method. Our initial results are very encouraging. ADM with STSG as a co-graft could be widely used in reconstructive surgery. This is a preliminary study, which should be continued in further, extended research.
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Cao Y, Shi X, Zhao X, Chen B, Li X, Li Y, Chen Y, Chen C, Lu H, Liu J. Acellular dermal matrix decorated with collagen-affinity peptide accelerate diabetic wound healing through sustained releasing Histatin-1 mediated promotion of angiogenesis. Int J Pharm 2022; 624:122017. [PMID: 35839983 DOI: 10.1016/j.ijpharm.2022.122017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 06/19/2022] [Accepted: 07/09/2022] [Indexed: 11/26/2022]
Abstract
Treating diabetic ulcers is a major challenge in clinical practice, persecuting millions of patients with diabetes and increasing the medical burden. Recombinant growth factor application can accelerate diabetic wound healing via angiogenesis. The local administration of recombinant growth factors has no robust clinical efficiency because of the degradation of append short duration of the molecules in the hostile inflammatoryenvironment.The present study focused on the pathophysiology of impaired neovascularization and growth factor short duration in the diabetic wound. We prepared a collagen-binding domain (CBD)-fused recombinant peptide (C-Histatin-1) that had both pro-angiogenesis capacity and collagen-affinity properties. Next, we created a biocompatible acellular dermal matrix (ADM) as a drug delivery carrier that featured collagen-richness, high porosity, and non-cytotoxicity. C-Histatin-1 was then tethered on ADM to obtain a sustained-release effect. Finally, a functional scaffold (C-Hst1/ADM) was developed. C-Hst1/ADM can sustain-release Histatin-1 to promote the adhesion, migration, and angiogenesisof vascular endothelial cells in vitro. Using a diabetic wound model, we showed that C-Hst1/ADM could significantly promote angiogenesis, reduce scar widths, and improve extracellular collagen accumulation. Therefore, the results of this study provide a foundation for the clinical application of C-Hst1/ADM covering scaffold in the treatment of diabetic wounds.
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Affiliation(s)
- Yanpeng Cao
- Department of Limbs (Foot and Hand) Microsurgery, Chenzhou No.1 people's hospital, Chenzhou, China
| | - Xin Shi
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China; Hunan Engineering Research Center of Sports and Health, Changsha, China
| | - Xin Zhao
- Department of Limbs (Foot and Hand) Microsurgery, Chenzhou No.1 people's hospital, Chenzhou, China
| | - Bei Chen
- Department of Limbs (Foot and Hand) Microsurgery, Chenzhou No.1 people's hospital, Chenzhou, China
| | - Xiying Li
- Department of Limbs (Foot and Hand) Microsurgery, Chenzhou No.1 people's hospital, Chenzhou, China
| | - Yabei Li
- Department of Limbs (Foot and Hand) Microsurgery, Chenzhou No.1 people's hospital, Chenzhou, China
| | - Yaowu Chen
- Department of Limbs (Foot and Hand) Microsurgery, Chenzhou No.1 people's hospital, Chenzhou, China
| | - Can Chen
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
| | - Hongbin Lu
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; Mobile Health Ministry of Education - China Mobile Joint Laboratory, Changsha, China; Xiangya Hospital-International Chinese Musculeskeletal Research Society Sports Medicine Research Centre, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
| | - Jun Liu
- Department of Limbs (Foot and Hand) Microsurgery, Chenzhou No.1 people's hospital, Chenzhou, China; The First School of Clinical Medicine, Southern Medical University, Guangzhou, China; The First School of Clinical Medicine, Xiangnan University, Chenzhou, China.
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Wang H, Sun XC, Zhang D, Li JH, Yin LQ, Yan YF, Ma X, Xia HF. Active bone material containing modified recombinant human bone morphogenetic protein 2 induces bone regeneration in the alveolar process cleft in rabbits. Artif Organs 2021; 45:O207-O222. [PMID: 33355401 DOI: 10.1111/aor.13889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/09/2020] [Accepted: 12/10/2020] [Indexed: 11/28/2022]
Abstract
The clinical application of most materials used to fill severe bone defects is limited owing to the insufficient ability of such materials to induce bone regeneration over a long repair period. The purpose of this study was to establish a model for the alveolar process cleft in rabbits to evaluate the effect of active bone material in bone defect repair. The active bone material used in this study is a new bone repair material composed of a heterogeneous collagen membrane implanted with modified recombinant human bone morphogenetic protein 2. This proposed active bone material can specifically bind to collagen. Twenty-four young Japanese white rabbits (JWRs) were selected and randomly divided into four groups (normal, control, material, and bone morphogenetic protein groups). The alveolar process cleft model was established by removing an equal volume bone at the left maxillary position. Blood samples were collected from the JWRs 3 and 6 months after the surgery to evaluate the biocompatibility of the active bone materials. Subsequently, the skull model was established, and the appearance was observed. Imaging methods (including X-ray examination and micro-computerized tomography scanning), tissue staining, and immunohistochemistry were employed for the evaluation. The bone collagen material and active bone material exhibited high biocompatibility. In addition, the ability of the active bone material to induce bone repair and regeneration was higher than that of the bone collagen material. The active bone material exhibited satisfactory bone regeneration performance in rabbits, indicating its potential as an active material for repairing congenital alveolar process clefts in humans.
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Affiliation(s)
- Hu Wang
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China.,Graduate Schools, Peking Union Medical College, Beijing, China
| | - Xue-Cheng Sun
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China.,Graduate Schools, Peking Union Medical College, Beijing, China
| | - Dan Zhang
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China.,Graduate Schools, Peking Union Medical College, Beijing, China
| | - Jian-Hui Li
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China.,Graduate Schools, Peking Union Medical College, Beijing, China
| | - Li-Qiang Yin
- Yantai Zhenghai Bio-Tech Co., Ltd., Shandong, China
| | - Yu-Fang Yan
- Yantai Zhenghai Bio-Tech Co., Ltd., Shandong, China
| | - Xu Ma
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China.,Graduate Schools, Peking Union Medical College, Beijing, China
| | - Hong-Fei Xia
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China.,Graduate Schools, Peking Union Medical College, Beijing, China
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Lei X, Cheng L, Lin H, Pang M, Yao Z, Chen C, Forouzanfar T, Bikker FJ, Wu G, Cheng B. Human Salivary Histatin-1 Is More Efficacious in Promoting Acute Skin Wound Healing Than Acellular Dermal Matrix Paste. Front Bioeng Biotechnol 2020; 8:999. [PMID: 32974320 PMCID: PMC7466576 DOI: 10.3389/fbioe.2020.00999] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/31/2020] [Indexed: 02/04/2023] Open
Abstract
A rapid wound healing is beneficial for not only recovering esthetics but also reducing pain, complications and healthcare burdens. For such a purpose, continuous efforts have been taken to develop viable dressing material. Acellular dermal matrix (ADM) paste has been used to repair burn wounds and is shown to promote angiogenesis as well as fibroblast attachment and migration. However, its efficacy still needs to be significantly improved to meet clinical demands for accelerating acute skin wound healing. To approach this problem, we studied the added value of a human salivary peptide - Histatin 1 (Hst1). Hst1 was chosen because of its potency to promote the adhesion, spreading, migration, metabolic activity and cell-cell junction of major skin cells and endothelial cells. In this study, we hypothesized that ADM paste and Hst1 showed a better effect on the healing of surgically created acute skin wounds in mice since ADM paste may act as a slow release system for Hst1. Our results showed that the healing efficacy of 10 μM topically administrated Hst1 was significantly higher compared to the control (no Hst1, no ADM) from day 3 to day 10 post-surgery. In contrast, ADM alone failed in our system at all time points. Also, the combination of ADM paste and Hst1 did not show a better effect on percentage of wound healing. Histological analysis showed that 10 μM Hst1 was associated with maximal thickness of newly formed epidermal layer on day 7 as well as the largest collagen area on day 14. In addition, immunohistochemical staining showed that the number of CD31-positive blood vessels in the group of 10 μM Hst1 was 2.3 times compared to the control. The vascular endothelial growth factor (VEGF) expression in the groups of 10 μM Hst1 group and ADM + 10 μM Hst1 group was significantly higher compared with the control group. Furthermore, 10 μM Hst1 group was associated with significantly lower levels of CD68-positive macrophage number, interleukin-1β (IL-1β) expression and C-reactive protein (CRP) expression than those of the other groups (control, ADM alone and ADM + 10 μM Hst1). In contrast, ADM was only associated with significantly lower CD68-positive macrophage number and IL-1β expression in comparison with the control. The co-administration of Hst1 and ADM paste did not yield more beneficial effects than Hst1 alone. In conclusion, the topically administrated of 10 μM Hst1 could be a promising alternative dressing in managing acute wound healing.
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Affiliation(s)
- Xiaoxuan Lei
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science, Amsterdam, Netherlands
- Department of Burn and Plastic Surgery, General Hospital of Southern Theater Command, Guangzhou, China
| | - Liuhanghang Cheng
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science, Amsterdam, Netherlands
- Department of Burn and Plastic Surgery, General Hospital of Southern Theater Command, Guangzhou, China
| | - Haiyan Lin
- Savaid Stomatology School, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Mengru Pang
- Department of Burn and Plastic Surgery, General Hospital of Southern Theater Command, Guangzhou, China
| | - Zexin Yao
- Department of Burn and Plastic Surgery, General Hospital of Southern Theater Command, Guangzhou, China
| | - Caihong Chen
- Department of Burn and Plastic Surgery, General Hospital of Southern Theater Command, Guangzhou, China
| | - Tymour Forouzanfar
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science, Amsterdam, Netherlands
| | - Floris J. Bikker
- Department of Oral Biochemistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam, Netherlands
| | - Gang Wu
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam (VU), Amsterdam Movement Science, Amsterdam, Netherlands
- Department of Oral Implantology and Prosthetic Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam, Netherlands
| | - Biao Cheng
- Department of Burn and Plastic Surgery, General Hospital of Southern Theater Command, Guangzhou, China
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The Potential of Acellular Dermal Matrix Combined With Neural Stem Cells Induced From Human Adipose-Derived Stem Cells in Nerve Tissue Engineering. Ann Plast Surg 2020; 82:S108-S118. [PMID: 30540605 DOI: 10.1097/sap.0000000000001731] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Reconstruction of segmental peripheral nerve gap is still challenging when the autografts are unavailable owing to limited availability of donor site and functional recovery. The creation of artificial conduits composed of biological or synthetic materials is still developing. Acellular dermal matrix (ADM) has been widely studied and its extension and plasticity properties may become suitable nerve conduits under different forms of nerve gaps. Adipose-derived stem cells (ADSCs) have the potential to differentiate into various cell types of different germ layers including neural stem cells (NSCs). The purpose of this experiment is to use ADM as a scaffold combined with NSCs induced by ADSCs to establish neural tissue engineering. METHODS The ADSCs were isolated from syringe-liposuction adipose tissue harvested from abdominal fat and then cultured in keratinocyte serum free media to trigger into neural stem cells. Stem cells were confirmed by the expression of surface markers nestin and SOX2 in NSCs with Western blot and immunofluorescent staining. Matrix enzyme treatment was used to obtain ADM to remove immunogenic cells while maintaining the integrity of the basement membrane complex and the extracellular matrix structure of the dermis. The NSCs were cocultured with ADM for 3 days, and survival markers Ki67 and neural stem cell markers nestin were detected. RESULTS These NSCs can form neurospheres and express nestin and SOX2. The NSC can further coculture with ADM, and it will continue to express survivor markers and neural stem cell markers on ADM. CONCLUSIONS These findings provide evidence that the combination of ADM and NSC has the same potential as neural tissue engineering as other acellular sciatic nerve.
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Abstract
The skin is the largest organ in the body, fulfilling a variety of functions and acting as a barrier for internal organs against external insults. As for extensive or irreversible damage, skin autografts are often considered the gold standard, however inherent limitations highlight the need for alternative strategies. Engineering of human-compatible tissues is an interdisciplinary and active field of research, leading to the production of scaffolds and skin substitutes to guide repair and regeneration. However, faithful reproduction of extracellular matrix (ECM) architecture and bioactive content capable of cell-instructive and cell-responsive properties remains challenging. ECM is a heterogeneous, connective network composed of collagens, glycoproteins, proteoglycans, and small molecules. It is highly coordinated to provide the physical scaffolding, mechanical stability, and biochemical cues necessary for tissue morphogenesis and homeostasis. Decellularization processes have made it possible to isolate the ECM in its native and three-dimensional form from a cell-populated tissue for use in skin regeneration. In this review, we present recent knowledge about these decellularized biomaterials with the potential to be used as dermal or skin substitutes in clinical applications. We detail tissue sources and clinical indications with success rates and report the most effective decellularization methods compatible with clinical use.
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Liu C, Sun J. A porcine acellular dermal matrix induces human fibroblasts to secrete hyaluronic acid by activating JAK2/STAT3 signalling. RSC Adv 2020; 10:18959-18969. [PMID: 35518338 PMCID: PMC9053941 DOI: 10.1039/c9ra03736e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 04/26/2020] [Indexed: 11/21/2022] Open
Abstract
Human facial skin undergoes continuous ageing over a lifespan. At present, facial skin rejuvenation is mainly achieved by injecting filling materials. However, conventional materials lack long-term beneficial effects and can only rejuvenate the skin temporarily by physical filling. To overcome this shortcoming, this study developed a porcine acellular dermal matrix with a porous three-dimensional scaffold structure and containing natural growth factors (3D-GF-PADM). The average size of the 3D-GF-PADM particles was 33.415 μm, and the dynamic viscosity and elastic modulus were within ranges suitable for clinical applications. Our study revealed that the 3D-GF-PADM exhibited an extremely low α-gal epitope number (3.15 ± 0.84 × 1011/mg) and DNA content, and no immunotoxicity, but contained abundant TGF-β1, VEGF and other growth factors. More importantly, this 3D-GF-PADM actively induced the synthesis of hyaluronic acid by fibroblasts of the host skin. Study at the molecular level further demonstrated that the 3D-GF-PADM activated the JAK2/STAT3 pathway, resulting in the upregulation of HAS2 expression, which led to an increase in hyaluronic acid synthesis. Our study developed a novel 3D-GF-PADM that can actively induce hyaluronic acid synthesis, which may be used clinically as a skin filling material to achieve long-term skin rejuvenation. By activating the JAK2/STAT3 pathway, 3D-GF-PADM induces the production of hyaluronic acid in human fibroblasts.![]()
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Affiliation(s)
- Chao Liu
- Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Biomaterials Research and Testing Center Shanghai 200023 China +86-21-63034903
| | - Jiao Sun
- Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Biomaterials Research and Testing Center Shanghai 200023 China +86-21-63034903
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10
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Syu WZ, Hueng DY, Chen WL, Chan JYH, Chen SG, Huang SM. Adipose-Derived Neural Stem Cells Combined with Acellular Dermal Matrix as a Neural Conduit Enhances Peripheral Nerve Repair. Cell Transplant 2019; 28:1220-1230. [PMID: 31148461 PMCID: PMC6767887 DOI: 10.1177/0963689719853512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Reconstruction to close a peripheral nerve gap continues to be a challenge for clinical
medicine, and much effort is being made to develop nerve conduits facilitate nerve gap
closure. Acellular dermal matrix (ADM) is mainly used to aid wound healing, but its
malleability and plasticity potentially enable it to be used in the treatment of nerve
gaps. Adipose-derived stem cells (ADSCs) can be differentiated into three germ layer
cells, including neurospheres. We tested the ability of ADSC-derived neural stem cells
(NSCs) in combination with ADM or acellular sciatic nerve (ASN) to repair a transected
sciatic nerve. We found that NSCs form neurospheres that express Nestin and Sox2, and
could be co-cultured with ADM in vitro, where they express the survival marker Ki67.
Following sciatic nerve transection in rats, treatment with ADM+NSC or ASN+NSC led to
increases in relative gastrocnemius weight, cross-sectional muscle fiber area, and sciatic
functional index as compared with untreated rats or rats treated with ADM or ASN alone.
These findings suggest that ADM combined with NSCs can improve peripheral nerve gap repair
after nerve transection and may also be useful for treating other types of neurological
gaps.
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Affiliation(s)
- Wei-Ze Syu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei
| | - Dueng-Yuan Hueng
- Department of Biochemistry, National Defense Medical Center, Taipei.,Department of Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Wei-Liang Chen
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, and School of Medicine, National Defense Medical Center, Taipei
| | - James Yi-Hsin Chan
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei.,Superintendent's Office, National Defense Medical Center, Taipei
| | - Shyi-Gen Chen
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei.,Division of Plastic and Reconstructive Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Shih-Ming Huang
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei.,Department of Biochemistry, National Defense Medical Center, Taipei
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Agarwal R, Liu G, Tam NW, Gratzer PF, Frampton JP. Precision cell delivery in biphasic polymer systems enhances growth of keratinocytes in culture and promotes their attachment on acellular dermal matrices. J Tissue Eng Regen Med 2019; 13:997-1006. [PMID: 30811860 DOI: 10.1002/term.2845] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 01/10/2019] [Accepted: 02/21/2019] [Indexed: 12/22/2022]
Abstract
Current approaches for precision deposition of cells are not optimized for moist environments or for substrates with complex surface topographic features, for example, the surface of dermal matrices and other biomaterials. To overcome these challenges, an approach is presented that utilizes cell confinement in phase-separating polymer solutions of polyethylene glycol and dextran to precisely deliver keratinocytes in well-defined colonies. Using this approach, keratinocyte colonies are produced with superior viability, proliferative capacity, and barrier formation compared with the same number of cells dispersedly seeded across substrate surfaces. It is further demonstrated that keratinocytes delivered in colonies to the surface of acellular dermal matrices form an intact epidermal basal layer more rapidly and more completely than cells delivered by conventional dispersed seeding. These findings demonstrate that delivery of keratinocytes in phase-separating polymer solutions holds potential for enhancing growth of keratinocytes in culture and production of functional skin equivalents.
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Affiliation(s)
- Rishima Agarwal
- School of Biomedical Engineering, Dalhousie University, Halifax, Canada
| | - Guanyong Liu
- School of Biomedical Engineering, Dalhousie University, Halifax, Canada
| | - Nicky W Tam
- School of Biomedical Engineering, Dalhousie University, Halifax, Canada
| | - Paul F Gratzer
- School of Biomedical Engineering, Dalhousie University, Halifax, Canada
| | - John P Frampton
- School of Biomedical Engineering, Dalhousie University, Halifax, Canada
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Abstract
The use of allogenic materials in reconstructive surgery is of great scientific interest due to high availability of donor tissues. The positive aspects of allogenous tissue transplantation are complicated by the histological incompatibility of donor tissue and recipient organism. This incompatibility results hypersensitivity reaction towards the allogenous transplant followed by rejection of allogenic tissue and even death in some cases. Cellular biological incompatibility may be managed by decellularization of allogenous organs and tissues prior to transplantation. The improvement of decellularization techniques will facilitate application of allogenous tissues in complex reconstructive procedures and significantly increase the capabilities of reconstructive surgery.
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Affiliation(s)
- O I Startseva
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - M E Sinelnikov
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - Yu V Babayeva
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - V V Trushenkova
- Sechenov First Moscow State Medical University, Moscow, Russia
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13
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Gardani M, Simonacci F, De Sario G, Cattadori F, Raposio E, Palli D. Prepectoral breast reconstruction using the Braxon® porcine acellular dermal matrix: a retrospective study. EUROPEAN JOURNAL OF PLASTIC SURGERY 2018. [DOI: 10.1007/s00238-018-1455-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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14
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Clinical Outcome of Cryopreserved Acellular Dermal Matrix for Full-Thickness Burns. Macromol Res 2018. [DOI: 10.1007/s13233-018-6109-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Yamamoto T, Iwase H, King TW, Hara H, Cooper DKC. Skin xenotransplantation: Historical review and clinical potential. Burns 2018; 44:1738-1749. [PMID: 29602717 DOI: 10.1016/j.burns.2018.02.029] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 02/02/2018] [Accepted: 02/27/2018] [Indexed: 12/22/2022]
Abstract
Half a million patients in the USA alone require treatment for burns annually. Following an extensive burn, it may not be possible to provide sufficient autografts in a single setting. Pig skin xenografts may provide temporary coverage. However, preformed xenoreactive antibodies in the human recipient activate complement, and thus result in rapid rejection of the graft. Because burn patients usually have some degree of immune dysfunction and are therefore at increased risk of infection, immunosuppressive therapy is undesirable. Genetic engineering of the pig has increased the survival of pig heart, kidney, islet, and corneal grafts in immunosuppressed non-human primates from minutes to months or occasionally years. We summarize the current status of research into skin xenotransplantation for burns, with special emphasis on developments in genetic engineering of pigs to protect the graft from immunological injury. A genetically-engineered pig skin graft now survives as long as an allograft and, importantly, rejection of a skin xenograft is not detrimental to a subsequent allograft. Nevertheless, currently, systemic immunosuppressive therapy would still be required to inhibit a cellular response, and so we discuss what further genetic manipulations could be carried out to inhibit the cellular response.
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Affiliation(s)
- Takayuki Yamamoto
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hayato Iwase
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Timothy W King
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hidetaka Hara
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - David K C Cooper
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA.
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16
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Zuo Y, Lu S. Dermis, acellular dermal matrix, and fibroblasts from different layers of pig skin exhibit different profibrotic characteristics: evidence from in vivo study. Oncotarget 2017; 8:23613-23627. [PMID: 28423561 PMCID: PMC5410331 DOI: 10.18632/oncotarget.15389] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 01/11/2017] [Indexed: 12/19/2022] Open
Abstract
To explore the profibrotic characteristics of the autografted dermis, acellular dermal matrix, and dermal fibroblasts from superficial/deep layers of pig skin, 93 wounds were established on the dorsa of 7 pigs. 72 wounds autografted with the superficial/deep dermis and acellular dermal matrix served as the superficial/deep dermis and acellular dermal matrix group, respectively, and were sampled at 2, 4, and 8 weeks post-wounding. 21 wounds autografted with/without superficial/deep dermal fibroblasts served as the superficial/deep dermal fibroblast group and the control group, respectively, and were sampled at 2 weeks post-wounding. The hematoxylin and eosin staining showed that the wounded skin thicknesses in the deep dermis group (superficial acellular dermal matrix group) were significantly greater than those in the superficial dermis group (deep acellular dermal matrix group) at each time point, the thickness of the cutting plane in the deep dermal fibroblast group was significantly greater than that in the superficial dermal fibroblast group and the control group. The western blots showed that the α-smooth muscle actin expression in the deep dermis group (superficial acellular dermal matrix group) was significantly greater than that in the superficial dermis group (deep acellular dermal matrix group) at each time point. In summary, the deep dermis and dermal fibroblasts exhibited more profibrotic characteristics than the superficial ones, on the contrary, the deep acellular dermal matrix exhibited less profibrotic characteristics than the superficial one.
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Affiliation(s)
- Yanhai Zuo
- Shanghai Burns Institute, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuliang Lu
- Shanghai Burns Institute, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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17
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Mansour A, Mezour MA, Badran Z, Tamimi F. * Extracellular Matrices for Bone Regeneration: A Literature Review. Tissue Eng Part A 2017; 23:1436-1451. [PMID: 28562183 DOI: 10.1089/ten.tea.2017.0026] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The gold standard material for bone regeneration is still autologous bone, a mesenchymal tissue that consists mainly of extracellular matrix (ECM) (90% v/v) and little cellular content (10% v/v). However, the fact that decellularized allogenic bone grafts often present a clinical performance comparable to autologous bone grafts demonstrates the crucial role of ECM in bone regeneration. For long, the mechanism by which bone allografts function was not clear, but recent research has unveiled many unique characteristics of ECM that seem to play a key role in tissue regeneration. This is further confirmed by the fact that synthetic biomaterials with composition and properties resembling bone ECM present excellent bone regeneration properties. In this context, ECM molecules such as glycosaminoglycans (GAGs) and self-assembly peptides (SAPs) can improve the performance of bone regeneration biomaterials. Moreover, decellularized ECM derived either from native tissues such as bone, cartilage, skin, and tooth germs or from cells such as osteoblasts, chondrocytes, and stem cells has shown promising results in bone regeneration applications. Understanding the role of ECM in bone regeneration is crucial for the development of the next generation of biomaterials for bone tissue engineering. In this sense, this review addresses the state-of-the-art on this subject matter.
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Affiliation(s)
- Alaa Mansour
- 1 Faculty of Dentistry, McGill University , Montreal, Canada
| | | | - Zahi Badran
- 1 Faculty of Dentistry, McGill University , Montreal, Canada .,2 Department of Periodontology (CHU/UIC 11, INSERM UMR 1229-RMeS), Faculty of Dental Surgery, University of Nantes , Nantes, France
| | - Faleh Tamimi
- 1 Faculty of Dentistry, McGill University , Montreal, Canada
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18
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Development of a new method for the preparation of an acellular allodermis, quality control and cytotoxicity testing. Cell Tissue Bank 2017; 18:153-166. [PMID: 28405854 DOI: 10.1007/s10561-017-9625-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 04/09/2017] [Indexed: 10/19/2022]
Abstract
Demand for use of acellular allodermis is high but commercially appropriate products are not used routinely because of very high price and limited availability. These facts did motivate us to prepare acellular allodermis using a new, simple and less expensive method. We have developed a original method for preparation of acellular allogeneic dermis based on action of a proteolytic enzyme in combination with distilled water. Hypotonic environment in comparison with SDS or Triton ansure no toxicity of the final product. Trials for determination of optimal trypsin concentrations, temperature and time of action were performed. According to our results, the use of 2.5% trypsin/EDTA solution overnight at +4 °C was proving to be optimal. The histology confirmed absence of cells in the prepared dermis. No toxicity of final acellular dermis was confirmed by three independent tests (agar diffusion test contact cytotoxicity test and grow curve). The prepared acellular dermis seems to be suitable not only for direct clinical use, but it can be used as a scaffold for cell cultivation as well.
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19
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Guerrero L, Camacho B. Comparison of different skin preservation methods with gamma irradiation. Burns 2017; 43:804-811. [PMID: 28196742 DOI: 10.1016/j.burns.2017.01.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 11/15/2016] [Accepted: 01/06/2017] [Indexed: 11/19/2022]
Abstract
Allografts are in constant demand, not only for burn victims, but also for all open wounds as "biological dressings". Tissue quality and security are two of the major concerns of Tissue Banks. There are limited studies published. There has been extensive discussion on the subject of preservation methods for cadaver skin. Most literature available comes from clinical reports. In this research, the authors compared 85% glycerolized non irradiated skin allografts with three glycerolized irradiated skin allografts (using different glycerol concentrations 50%, 70% and 85%). The evaluation of allograft quality was done by measuring physical and biological properties of such prepared human tissue grafts. In the histological structure evaluation changes were minimal and did not alter the skin structure. The clinical function of their behavior as temporal dressings was tested. They proved to have similar capabilities for improving granulating tissue and contributing to wound beds closure (Hickerson et al. (1994) [1]).
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Application of acellular intima from porcine thoracic aorta in full-thickness skin wound healing in a rat model. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:1135-1144. [DOI: 10.1016/j.msec.2016.11.103] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 10/29/2016] [Accepted: 11/24/2016] [Indexed: 11/23/2022]
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21
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Pashos NC, Scarritt ME, Eagle ZR, Gimble JM, Chaffin AE, Bunnell BA. Characterization of an Acellular Scaffold for a Tissue Engineering Approach to the Nipple-Areolar Complex Reconstruction. Cells Tissues Organs 2017; 203:183-193. [PMID: 28125805 DOI: 10.1159/000455070] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2016] [Indexed: 11/19/2022] Open
Abstract
A significant number of patients undergo mastectomies and breast reconstructions every year using many surgical-based techniques to reconstruct the nipple-areolar complex (NAC). Described herein is a tissue engineering approach that may permit a human NAC onlay graft during breast reconstruction procedures. By applying decellularization, which is the removal of cellular components from tissue, to an intact whole donor NAC, the extracellular matrix (ECM) structure of the NAC is preserved. This creates a biologically derived scaffold for cells to repopulate and regenerate the NAC. A detergent-based decellularization method was used to derive whole NAC scaffolds from nonhuman primate rhesus macaque NAC tissue. Using both histological and quantitative analyses for the native and decellularized tissues, the derived ECM graft was assessed. The bioactivity of the scaffold was evaluated following cell culture with bone marrow-derived mesenchymal stem cells (BMSCs). The data presented here demonstrate that scaffolds are devoid of cells and retain ECM integrity and a high degree of bioactivity. The content of collagen and glycosaminoglycans were not significantly altered by the decellularization process, whereas the elastin content was significantly decreased. The proliferation and apoptosis of seeded BMSCs were found to be approximately 65 and <1.5%, respectively. This study characterizes the successful decellularization of NAC tissue as compared to native NACs based on structural protein composition, lubricating protein retention, the maintenance of adhesion molecules, and bioactivity when reseeded with cells. These histological and quantitative analyses provide the foundation for a novel approach to NAC reconstruction.
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Affiliation(s)
- Nicholas C Pashos
- Center for Stem Cell Research and Regenerative Medicine, Tulane University School of Medicine, New Orleans, LA, USA
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22
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Xu Y, Zhang G, Chang Y, Qiu YX, Wang C. The Preparation of Acellular Dermal Matrices by Freeze-Thawing and Ultrasonication Process and the Evaluation of Its Antigenicity. Cell Biochem Biophys 2017; 73:27-33. [PMID: 25649614 DOI: 10.1007/s12013-015-0569-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Antigenicity is the biggest obstacle of xenogeneic acellular dermal matrices (ADM) as dermal scaffold in treatment of large-area skin defect. We prepared ADM by repeated freezing and thawing and ultrasonic process, and then injected the ADM homogenate and degradation product into porcine skin to evaluate the effectiveness of the decellularized method and the antigenicity of porcine ADM. In this work, chinese miniature pigs (n = 10) were sensitized by subcutaneous injection with human ADM degradation products on days 0, 7, and 14. After 21 days, their abdominal skin was divided into five regions for intradermal injection of porcine ADM homogenate (PADM), PADM degradation products, human ADM homogenate (HADM), HADM degradation products, and physiological saline (negative control). Positive controls (n = 2) were processed with fresh human skin homogenate by the same method. The skin manifestations in related areas were observed at 24 and 48 h and then the skin was subjected to histopathological and immunohistochemical analysis. The results showed that skin erythema and hydroderma were not observed in all groups but in positive control group. The histopathological and immunohistochemical results confirmed that no inflammatory cell infiltration, irregular extracellular matrix, IL-2, and IFN-γ expression were observed in all four test groups. Our results suggest that the combination with repeated freeze-thawing and ultrasonication can be an effective method to prepare ADM, which has great potential in clinical application.
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Affiliation(s)
- Yazhen Xu
- Department of Burns and Plastic Surgery, Peking University Fourth School of Clinical Medicine, Beijing, 100035, People's Republic of China
| | - Guoan Zhang
- Department of Burns and Plastic Surgery, Peking University Fourth School of Clinical Medicine, Beijing, 100035, People's Republic of China.
| | - Yang Chang
- Department of Burns and Plastic Surgery, Peking University Fourth School of Clinical Medicine, Beijing, 100035, People's Republic of China
| | - Yu-Xuan Qiu
- Department of Burns and Plastic Surgery, Peking University Fourth School of Clinical Medicine, Beijing, 100035, People's Republic of China
| | - Cheng Wang
- Beijing Jishuitan Hospital, Beijing, 100035, People's Republic of China
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23
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Boone M, Draye JP, Verween G, Pirnay JP, Verbeken G, De Vos D, Rose T, Jennes S, Jemec GBE, Del Marmol V. Real-time three-dimensional imaging of epidermal splitting and removal by high-definition optical coherence tomography. Exp Dermatol 2016; 23:725-30. [PMID: 25047067 DOI: 10.1111/exd.12516] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/17/2014] [Indexed: 01/06/2023]
Abstract
While real-time 3-D evaluation of human skin constructs is needed, only 2-D non-invasive imaging techniques are available. The aim of this paper is to evaluate the potential of high-definition optical coherence tomography (HD-OCT) for real-time 3-D assessment of the epidermal splitting and decellularization. Human skin samples were incubated with four different agents: Dispase II, NaCl 1 M, sodium dodecyl sulphate (SDS) and Triton X-100. Epidermal splitting, dermo-epidermal junction, acellularity and 3-D architecture of dermal matrices were evaluated by High-definition optical coherence tomography before and after incubation. Real-time 3-D HD-OCT assessment was compared with 2-D en face assessment by reflectance confocal microscopy (RCM). (Immuno) histopathology was used as control. HD-OCT imaging allowed real-time 3-D visualization of the impact of selected agents on epidermal splitting, dermo-epidermal junction, dermal architecture, vascular spaces and cellularity. RCM has a better resolution (1 μm) than HD-OCT (3 μm), permitting differentiation of different collagen fibres, but HD-OCT imaging has deeper penetration (570 μm) than RCM imaging (200 μm). Dispase II and NaCl treatments were found to be equally efficient in the removal of the epidermis from human split-thickness skin allografts. However, a different epidermal splitting level at the dermo-epidermal junction could be observed and confirmed by immunolabelling of collagen type IV and type VII. Epidermal splitting occurred at the level of the lamina densa with dispase II and above the lamina densa (in the lamina lucida) with NaCl. The 3-D architecture of dermal papillae and dermis was more affected by Dispase II on HD-OCT which corresponded with histopathologic (orcein staining) fragmentation of elastic fibres. With SDS treatment, the epidermal removal was incomplete as remnants of the epidermal basal cell layer remained attached to the basement membrane on the dermis. With Triton X-100 treatment, the epidermis was not removed. In conclusion, HD-OCT imaging permits real-time 3-D visualization of the impact of selected agents on human skin allografts.
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Affiliation(s)
- Marc Boone
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Bruxelles, Belgium
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24
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Feng Y, Wang W. In vivo confocal microscopic observation of lamellar corneal transplantation in the rabbit using xenogenic acellular corneal scaffolds as a substitute. Chin Med J (Engl) 2015; 128:933-40. [PMID: 25836615 PMCID: PMC4834011 DOI: 10.4103/0366-6999.154301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The limiting factor to corneal transplantation is the availability of donors. Research has suggested that xenogenic acellular corneal scaffolds (XACS) may be a possible alternative to transplantation. This study aimed to investigate the viability of performing lamellar corneal transplantation (LCT) in rabbits using canine XACS. METHODS Fresh dog corneas were decellularized by serial digestion, and LCT was performed on rabbit eyes using xenogeneic decellularized corneal matrix. Cellular and morphological changes were observed by slit-lamp, light, and scanning electron microscopy at 7, 30 and 90 days postoperatively. Immunocytochemical staining for specific markers such as keratin 3, vimentin and MUC5AC, was used to identify cells in the graft. RESULTS Decellularized xenogenic corneal matrix remained transparent for about 1-month after LCT. The recipient cells were able to survive and proliferate into the grafts. Three months after transplantation, grafts had merged with host tissue, and graft epithelialization and vascularization had occurred. Corneal nerve fibers were able to grow into the graft in rabbits transplanted with XACS. CONCLUSIONS Xenogenic acellular corneal scaffolds can maintain the transparency of corneal grafts about 1-month and permit growth of cells and nerve fibers, and is, therefore, a potential substitute or carrier for a replacement cornea.
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Affiliation(s)
| | - Wei Wang
- Department of Ophthalmology, Peking University Third Hospital, Peking University Eye Center, Beijing 100191, China
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25
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Methods of tissue decellularization used for preparation of biologic scaffolds and in vivo relevance. Methods 2015; 84:25-34. [DOI: 10.1016/j.ymeth.2015.03.005] [Citation(s) in RCA: 367] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 03/02/2015] [Accepted: 03/09/2015] [Indexed: 02/07/2023] Open
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26
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Boone MALM, Draye JP, Verween G, Aiti A, Pirnay JP, Verbeken G, De Vos D, Rose T, Jennes S, Jemec GBE, del Marmol V. Recellularizing of human acellular dermal matrices imaged by high-definition optical coherence tomography. Exp Dermatol 2015; 24:349-54. [DOI: 10.1111/exd.12662] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2015] [Indexed: 01/28/2023]
Affiliation(s)
- Marc A. L. M. Boone
- Department of Dermatology; Hôpital Erasme; Université Libre de Bruxelles; Brussels Belgium
| | - Jean Pierre Draye
- Human Cell and Tissue Banks; Laboratory for Molecular and Cellular Technology; Burn Wound Centre; Queen Astrid Military Hospital; Brussels Belgium
| | - Gunther Verween
- Human Cell and Tissue Banks; Laboratory for Molecular and Cellular Technology; Burn Wound Centre; Queen Astrid Military Hospital; Brussels Belgium
| | - Annalisa Aiti
- Regional Skin Bank; Emilia Romagna and Cell Factory; Burn Center; Bufalini Hospital; Cesena Italy
| | - Jean-Paul Pirnay
- Human Cell and Tissue Banks; Laboratory for Molecular and Cellular Technology; Burn Wound Centre; Queen Astrid Military Hospital; Brussels Belgium
| | - Gilbert Verbeken
- Human Cell and Tissue Banks; Laboratory for Molecular and Cellular Technology; Burn Wound Centre; Queen Astrid Military Hospital; Brussels Belgium
| | - Daniel De Vos
- Human Cell and Tissue Banks; Laboratory for Molecular and Cellular Technology; Burn Wound Centre; Queen Astrid Military Hospital; Brussels Belgium
| | - Thomas Rose
- Human Cell and Tissue Banks; Laboratory for Molecular and Cellular Technology; Burn Wound Centre; Queen Astrid Military Hospital; Brussels Belgium
| | - Serge Jennes
- Human Cell and Tissue Banks; Laboratory for Molecular and Cellular Technology; Burn Wound Centre; Queen Astrid Military Hospital; Brussels Belgium
| | - Gregor B. E. Jemec
- Department of Dermatology; Roskilde Hospital; Health Sciences Faculty; University of Copenhagen; Roskilde Denmark
| | - Veronique del Marmol
- Department of Dermatology; Hôpital Erasme; Université Libre de Bruxelles; Brussels Belgium
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27
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Song G, Wu Y, Wang F, Shao Y, Jiang J, Fan C, Li P, Zhang Y, Zuo H. Development and preparation of a low-immunogenicity porcine dermal scaffold and its biocompatibility assessment. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:170. [PMID: 25804306 DOI: 10.1007/s10856-015-5503-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 02/09/2015] [Indexed: 06/04/2023]
Abstract
Acellular dermal matrix (ADM) has been widely used in repair and reconstruction of tissue defect. Therapeutic effect of porcine ADM (PADM) is inferior to that of human ADM (HADM). Relatively high immunogenicity and the resulting strong inflammatory response are major issue in application of PADM. We therefore treated reticular layer PADM (Rl-PADM) with matrix metalloproteinase-7 (MMP-7) and obtained a low-immunogenicity porcine dermal scaffold (LIPDS). Highly immunogenic components, tissue structure, cytocompatibility, and postgrafting histological changes of LIPDS were further investigated. Compared with Rl-PADM, LIPDS showed that the epithelial root sheath, cell debris, laminin, and type IV collagen were almost entirely removed, the structure remained normal, and the interfibrous space was relatively enlarged. Cytocompatibility of LIPDS was similar to that of HADM but superior to Rl-PADM. With regard to the extent of tissue ingrowth in terms of host fibroblasts infiltration and vascularization, LIPDS exhibited clear advantages over Rl-PADM after they had been subcutaneously transplanted in a rat model. In addition, no excessive inflammatory response was observed in LIPDS group up to 28 days postgraft, and the morphosis of collagenous fibers kept essentially normal. However, there were stronger inflammatory response and obvious collagen spallation in Rl-PADM group. The processes of integration and remodeling after the LIPDS grafting were similar to those of a normal wound healing response. The LIPDS graft was vascularized at a relatively high speed. Thus, as an implantable scaffold material, LIPDS is a superior template for guiding tissue regeneration and remodeling.
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Affiliation(s)
- Guodong Song
- Department of Burns, Jinan Central Hospital Affiliated to Shandong University, 105 Jiefang Road, Jinan, 250013, Shandong, People's Republic of China,
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28
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Syazwani N, Azhim A, Morimoto Y, Furukawa KS, Ushida T. Decellularization of Aorta Tissue Using Sonication Treatment as Potential Scaffold for Vascular Tissue Engineering. J Med Biol Eng 2015. [DOI: 10.1007/s40846-015-0028-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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29
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Vitteková M, Dragúňová J, Kabát P, Božiková M, Bakoš D, Koller J. Cytotoxicity testing of scaffolds potentially suitable for the preparation of three-dimensional skin substitutes. Cell Tissue Bank 2013; 15:345-55. [PMID: 23907264 DOI: 10.1007/s10561-013-9390-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 01/12/2013] [Indexed: 10/26/2022]
Abstract
The preparation and study of three-dimensional functional skin substitutes has been the focus of intense research for several decades. Dermal substitutes are now commonly used in medical practice for a variety of applications. Here, we assess the toxicity of seven selected acellular dermal matrix materials to establish their potential for use in future three-dimensional skin substitute studies. The cytotoxicity of acellular dermis (of Allo- and Xenograft origin) prepared in our lab and biomaterials based on collagen and hyaluronic acid (Coladerm H and Coladerm H-L) were compared to that seen in three commercially available products (Xe-Derma, AlloDerm and Xeno-Impl). Murine fibroblasts NIH-3T3 and human dermal fibroblasts were used in cytotoxicity tests, with any resultant cytotoxic effects caused by the seven tested dermal scaffolds visualised using an inverted microscope system and confirmed in parallel using colorimetric MTT cell proliferation assays. While most of the dermal substitutes did not demonstrate a cytotoxic effect on our two cell types, Xeno and Xeno-Impl scaffolds clearly did. The cytotoxic effect of acellular Xeno dermal matrix could essentially be removed through a regime of multiple washes, but we were unable to remove the cytotoxic effect of Xeno-Impl. Thus, Xeno-Impl alone has been excluded from our future work on preparation of 3D skin substitutes.
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Affiliation(s)
- Miroslava Vitteková
- Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovakia
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30
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Oliveira AC, Garzón I, Ionescu AM, Carriel V, Cardona JDLC, González-Andrades M, Pérez MDM, Alaminos M, Campos A. Evaluation of small intestine grafts decellularization methods for corneal tissue engineering. PLoS One 2013; 8:e66538. [PMID: 23799114 PMCID: PMC3682956 DOI: 10.1371/journal.pone.0066538] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 05/07/2013] [Indexed: 11/18/2022] Open
Abstract
Advances in the development of cornea substitutes by tissue engineering techniques have focused on the use of decellularized tissue scaffolds. In this work, we evaluated different chemical and physical decellularization methods on small intestine tissues to determine the most appropriate decellularization protocols for corneal applications. Our results revealed that the most efficient decellularization agents were the SDS and triton X-100 detergents, which were able to efficiently remove most cell nuclei and residual DNA. Histological and histochemical analyses revealed that collagen fibers were preserved upon decellularization with triton X-100, NaCl and sonication, whereas reticular fibers were properly preserved by decellularization with UV exposure. Extracellular matrix glycoproteins were preserved after decellularization with SDS, triton X-100 and sonication, whereas proteoglycans were not affected by any of the decellularization protocols. Tissue transparency was significantly higher than control non-decellularized tissues for all protocols, although the best light transmittance results were found in tissues decellularized with SDS and triton X-100. In conclusion, our results suggest that decellularized intestinal grafts could be used as biological scaffolds for cornea tissue engineering. Decellularization with triton X-100 was able to efficiently remove all cells from the tissues while preserving tissue structure and most fibrillar and non-fibrillar extracellular matrix components, suggesting that this specific decellularization agent could be safely used for efficient decellularization of SI tissues for cornea TE applications.
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Affiliation(s)
- Ana Celeste Oliveira
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
| | - Ingrid Garzón
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
| | | | - Victor Carriel
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
| | | | - Miguel González-Andrades
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Division of Ophthalmology, University of Granada, Granada, Spain
| | | | - Miguel Alaminos
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- * E-mail:
| | - Antonio Campos
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
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31
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Liem PH, Morimoto N, Ito R, Kawai K, Suzuki S. Autologous skin reconstruction by combining epidermis and acellular dermal matrix tissue derived from the skin of giant congenital melanocytic nevi. J Artif Organs 2013; 16:332-42. [PMID: 23644894 DOI: 10.1007/s10047-013-0708-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 04/10/2013] [Indexed: 01/12/2023]
Abstract
Giant congenital melanocytic nevi (GCMN) are defined as nevi greater than 20 cm in diameter. It is difficult to completely remove GCMN because of the lack of available skin grafts for covering the resultant defects. This study examined whether it is possible to produce reconstructed skin by combining epidermal and acellular dermal matrix (ADM) tissue derived from excised GCMN. GCMN skin samples were obtained with the informed consent of volunteer patients. The abilities of hypertonic saline (1 N NaCl), 0.05% trypsin, 0.1% SDS (sodium dodecyl sulfate), and phosphate buffered saline (PBS) to decellularize GCMN tissue were compared. The specimens were incubated in one of the test solutions at 37 °C for 48 h, before being washed with PBS at 4 °C for 14 days. Residual nuclei, residual DNA, nevus tissue viability, and the structural integrity of the basement membrane and capillaries were evaluated before treatment, and after 48 h' treatment with or without 7 or 14 days' washing. We tried to produce reconstructed skin by combining the resultant ADM with enzymatically separated GCMN epidermal tissue. The histological structure of the reconstructed skin was examined after it had been cultured for 5 days. In the SDS group, most cells had been removed after 48 h, and the DNA content of the ADM was significantly lower than in the other groups. As for viability, no significant difference was detected among the groups. The basement membrane and capillaries remained intact in all groups. After 5 days' culturing, the epidermis had become attached to the ADM in all groups, except the SDS group. SDS displayed a superior decellularization ability compared with the other methods; however, it cannot be used to produce reconstructed skin because of its toxicity. In conclusion, we produced reconstructed skin that was devoid of nevus cells by combining GCMN epidermal tissue with GCMN-derived ADM produced with NaCl or trypsin. This is a promising treatment strategy for giant nevus.
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Affiliation(s)
- Pham Hieu Liem
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan,
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Evaluation of dermal substitute in a novel co-transplantation model with autologous epidermal sheet. PLoS One 2012; 7:e49448. [PMID: 23145174 PMCID: PMC3492283 DOI: 10.1371/journal.pone.0049448] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 10/09/2012] [Indexed: 11/19/2022] Open
Abstract
The development of more and more new dermal substitutes requires a reliable and effective animal model to evaluate their safety and efficacy. In this study we constructed a novel animal model using co-transplantation of autologous epidermal sheets with dermal substitutes to repair full-thickness skin defects. Autologous epidermal sheets were obtained by digesting the basement membrane (BM) and dermal components from rat split-thickness skins in Dispase II solution (1.2 u/ml) at 4 °C for 8, 10 and 12 h. H&E, immunohistochemical and live/dead staining showed that the epidermal sheet preserved an intact epidermis without any BM or dermal components, and a high percentage of viable cells (92.10 ± 4.19%) and P63 positive cells (67.43 ± 4.21%) under an optimized condition. Porcine acellular dermal matrixes were co-transplanted with the autologous epidermal sheets to repair full-thickness skin defects in Sprague-Dawley rats. The epidermal sheets survived and completely re-covered the wounds within 3 weeks. Histological staining showed that the newly formed stratified epidermis attached directly onto the dermal matrix. Inflammatory cell infiltration and vascularization of the dermal matrix were not significantly different from those in the subcutaneous implantation model. Collagen IV and laminin distributed continuously at the epidermis and dermal matrix junction 4 weeks after transplantation. Transmission electron microscopy further confirmed the presence of continuous lamina densa and hemidesmosome structures. This novel animal model can be used not only to observe the biocompatibility of dermal substitutes, but also to evaluate their effects on new epidermis and BM formation. Therefore, it is a simple and reliable model for evaluating the safety and efficacy of dermal substitutes.
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Abd Eltawab SM, Kousha FS, Abd Elaziz AEH, Moussa MH, Elgawad Elseba SA. Preparation of an acellular dermal matrix using the freeze–thawing technique with and without γ irradiation. ACTA ACUST UNITED AC 2012. [DOI: 10.1097/01.ehx.0000413855.94491.c7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nyame TT, Lemon KP, Kolter R, Liao EC. High-throughput assay for bacterial adhesion on acellular dermal matrices and synthetic surgical materials. Plast Reconstr Surg 2011; 128:1061-1068. [PMID: 22030489 PMCID: PMC3766523 DOI: 10.1097/prs.0b013e31822b65af] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND There has been increasing use of synthetic and acellular dermal matrix materials in surgery, ranging from breast reconstruction to hernia repairs. There is a paucity of data on how acellular dermal matrix compares with other surgical materials as a substrate for bacterial adhesion, the first step in formation biofilm, which occurs in prosthetic wound infections. The authors have designed a high-throughput assay to evaluate Staphylococcus aureus adherence on various synthetic and biologically derived materials. METHODS Clinical isolates of S. aureus (strains SC-1 and UAMS-1) were cultured with different materials, and bacterial adherence was measured using a resazurin cell vitality assay. Four materials that are commonly used in surgery were evaluated: Prolene mesh, Vicryl mesh, and two different acellular dermal matrix preparations (AlloDerm and FlexHD). The authors were able to develop a high-throughput and reliable assay for quantifying bacterial adhesion on synthetic and biologically derived materials. RESULTS The resazurin vitality assay can be reliably used to quantify bacterial adherence to acellular dermal matrix material and synthetic material. S. aureus strains SC-1 and UAMS-1 both adhered better to acellular dermal matrix materials (AlloDerm versus FlexHD) than to the synthetic material Prolene. S. aureus also adhered better to Vicryl than to Prolene. Strain UAMS-1 adhered better to Vicryl and acellular dermal matrix materials than did strain SC-1. CONCLUSIONS The results show that S. aureus adheres more readily to acellular dermal matrix material than to synthetic material. The resazurin assay provides a standard method for evaluating surgical materials with regard to bacterial adherence and potential propensity for biofilm development.
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Affiliation(s)
- Theodore T. Nyame
- Division of Plastic and Reconstructive Surgery, Center for Regenerative Medicine, Harvard Stem Cell Institute, Massachusetts General Hospital, Harvard Medical School
| | - Katherine P. Lemon
- Division of Infectious Diseases, Children's Hospital Boston, Harvard Medical School
| | - Roberto Kolter
- Department of Microbiology and Molecular Genetics, Harvard Medical School
| | - Eric C. Liao
- Division of Plastic and Reconstructive Surgery, Center for Regenerative Medicine, Harvard Stem Cell Institute, Massachusetts General Hospital, Harvard Medical School
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Abstract
Although the principles of burn management are still primarily focused on survival, as advances are realized in resuscitation, nutrition, and wound management, the functional and aesthetic outcomes following burn injury have become increasingly important. Acellular dermal matrix materials, which allow surgeons to minimize skin graft donor site morbidity in the process of repairing injured areas, play a role in addressing these important issues. Many favorable reports have been published, but they are generally characterized by small sample sizes, limited objective testing, and retrospective analysis. There does appear to be some evidence for ADM application in patient populations in whom donor site availability (those with massive burns) or morbidity (children, the elderly) is a concern, but more studies are needed. In this article, the authors discuss the current applications for ADM in burn management, review the existing literature, and present opportunities for future research.
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Affiliation(s)
- David J Wainwright
- Division of Plastic Surgery, Department of Surgery, University of Texas Health Science Center, Houston, Texas 77030, USA.
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Rnjak J, Wise SG, Mithieux SM, Weiss AS. Severe Burn Injuries and the Role of Elastin in the Design of Dermal Substitutes. TISSUE ENGINEERING PART B-REVIEWS 2011; 17:81-91. [DOI: 10.1089/ten.teb.2010.0452] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jelena Rnjak
- School of Molecular Bioscience, University of Sydney, Sydney, Australia
| | - Steven G. Wise
- School of Molecular Bioscience, University of Sydney, Sydney, Australia
| | | | - Anthony S. Weiss
- School of Molecular Bioscience, University of Sydney, Sydney, Australia
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Choi JS, Kim BS, Kim JY, Kim JD, Choi YC, Yang HJ, Park K, Lee HY, Cho YW. Decellularized extracellular matrix derived from human adipose tissue as a potential scaffold for allograft tissue engineering. J Biomed Mater Res A 2011; 97:292-9. [PMID: 21448993 DOI: 10.1002/jbm.a.33056] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 11/04/2010] [Accepted: 01/13/2011] [Indexed: 12/16/2022]
Abstract
Decellularized tissues composed of extracellular matrix (ECM) have been clinically used to support the regeneration of various human tissues and organs. Most decellularized tissues so far have been derived from animals or cadavers. Therefore, despite the many advantages of decellularized tissue, there are concerns about the potential for immunogenicity and the possible presence of infectious agents. Herein, we present a biomaterial composed of ECM derived from human adipose tissue, the most prevalent, expendable, and safely harvested tissue in the human body. The ECM was extracted by successive physical, chemical, and enzymatic treatments of human adipose tissue isolated by liposuction. Cellular components including nucleic acids were effectively removed without significant disruption of the morphology or structure of the ECM. Major ECM components were quantified, including acid/pepsin-soluble collagen, sulfated glycosaminoglycan (GAG), and soluble elastin. In an in vivo experiment using mice, the decellularized ECM graft exhibited good compatibility to surrounding tissues. Overall results suggest that the decellularized ECM containing biological and chemical cues of native human ECM could be an ideal scaffold material not only for autologous but also for allograft tissue engineering.
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Affiliation(s)
- Ji Suk Choi
- Department of Chemical Engineering and Department of Bionanotechnology, Hanyang University, Ansan, Gyeonggi-do 426-791, Republic of Korea
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Shao C, Fu Y, Lu W, Fan X. Bone marrow-derived endothelial progenitor cells: a promising therapeutic alternative for corneal endothelial dysfunction. Cells Tissues Organs 2010; 193:253-63. [PMID: 20962503 DOI: 10.1159/000319797] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2010] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The global shortage of donor corneas has motivated the development of bioengineered corneas. Although corneal endothelium has been reconstituted using corneal endothelial cells (CEC) and precursor cells with various carrier materials, all of the current options require corneal tissue and are also limited by the scarcity of donor corneas. Here, we explored the feasibility of inducing bone marrow-derived endothelial progenitor cells (BEPC) to differentiate into CEC for the repair of corneal endothelial defects. MATERIALS AND METHODS BEPC were isolated from human fetal bone marrow, and identified using several antigen markers. BEPC were cocultured with CEC for 10 days in a transwell system with conditioned medium from CEC, and cell transdifferentiation was then examined. With a porcine corneal acellular matrix (PCACM) as the carrier, the induced BEPC were transplanted onto a cat's cornea from which Descemet's membrane and the endothelium had been stripped. RESULTS The induced BEPC resembled CEC in polygonal shape, expressing aquaporin-1, tightly opposed cell junctions, and neurone-specific enolase. Twenty-eight days after surgery, the transparency gradually returned to the corneas transplanted with the induced BEPC on PCACM. CONCLUSIONS Human fetal BEPC transdifferentiate into corneal endothelial-like cells in vitro. Features of the induced BEPC indicated that they may be useful for the repair of corneal endothelial dysfunction.
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Affiliation(s)
- Chunyi Shao
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Kaya M, Baba F, Bolukbas F, Boleken ME, Kanmaz T, Yucesan S. Use of Homologous Acellular Dermal Matrix for Abdominal Wall Reconstruction in Rats. J INVEST SURG 2009; 19:11-7. [PMID: 16546925 DOI: 10.1080/08941930500444370] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Homologous acellular dermal matrix graft (HADMG) has been used for the reconstructions of bowel, bladder, or urethra, but its suitability in the reconstruction of abdominal wall has not been tested. Therefore an experimental study was performed to evaluate the use of HADMG for the reconstruction of abdominal wall defects in weanling rats. Thirty weanling Wistar rats were used. A patch of abdominal wall 20 x 20 mm in dimension was removed. The defects were reconstructed with HADMGs that were derived from rat skin and prepared through a detergent enzymatic method. The reconstructed abdominal walls were evaluated as hernia rate and graft take ratio, excised and prepared for histological examination at 21 (n = 10), 40 (n = 10), and 90 (n = 10) days postoperation. The healing of repaired abdominal walls was uneventful. Histological evaluation demonstrated the migration of fibroblasts and neovascularization within the HADMG. Hernia in four rats were developed at 90 days. Neither significant wound contraction nor inflammation was seen at 21, 40, and 90 days after surgery in wounds receiving HADMGs. Thus, the use of a HADMG for reconstructing the abdominal wall in weanling rats has not given rise to any complications. HADMG has progressively remodeled into fibrous tissue. It appears to represent an important alternative substitute for the reconstruction of abdominal wall.
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Affiliation(s)
- Mete Kaya
- Department of Pediatric Surgery, Harran University, School of Medicine, Sanliurfa, Turkey.
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Ge L, Zheng S, Wei H. Comparison of histological structure and biocompatibility between human acellular dermal matrix (ADM) and porcine ADM. Burns 2009; 35:46-50. [DOI: 10.1016/j.burns.2008.05.007] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2008] [Accepted: 05/11/2008] [Indexed: 10/21/2022]
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Xiao S, Zhu S, Ma B, Yang J, Xia Z. A simple and quick method of directly observing growth and proliferation of composite skin cultured ex vivo. Burns 2008; 34:1008-10. [DOI: 10.1016/j.burns.2008.01.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2007] [Accepted: 01/14/2008] [Indexed: 10/22/2022]
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Development of a dermal matrix from glycerol preserved allogeneic skin. Cell Tissue Bank 2008; 9:309-15. [DOI: 10.1007/s10561-008-9073-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2008] [Accepted: 05/01/2008] [Indexed: 10/22/2022]
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Xiao S, Zhu S, Ma B, Xia ZF, Yang J, Wang G. A New System for Cultivation of Human Keratinocytes on Acellular Dermal Matrix Substitute with the Use of Human Fibroblast Feeder Layer. Cells Tissues Organs 2008; 187:123-30. [DOI: 10.1159/000109947] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2007] [Indexed: 01/08/2023] Open
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Prasertsung I, Kanokpanont S, Bunaprasert T, Thanakit V, Damrongsakkul S. Development of acellular dermis from porcine skin using periodic pressurized technique. J Biomed Mater Res B Appl Biomater 2008; 85:210-9. [PMID: 17853423 DOI: 10.1002/jbm.b.30938] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In this work, a new method for producing acellular dermis (ADM), a natural scaffold used for dermal replacement, from porcine skin was developed. Fresh porcine skin from local slaughterhouse was dehaired by sodium sulphide following by epidermis removal using glycerol. After fat removal by chloroform/methanol (2/1 v/v) solvent, cellular components were removed using enzymatic treatment incorporated with a periodic pressurized technique. The effects of enzyme type (trypsin and dispase II) and periodic pressurized conditions on the efficiency of cell removal were investigated. When periodic pressure was applied, enzymatic treatment time could be shorten since the enzyme solution was able to penetrate into tight dermis. As a result, cells could be easily removed from porcine skin as noticed quantitatively by DNA assay and qualitatively by H&E staining. When enzyme refreshment was introduced into the decellularized process, the percentage of cell removal was further enhanced. This ensured that no inhibitions effect from the removed cells on enzyme-substrate interaction. Moreover, short-time enzymatic treatment with periodic pressurized technique could prevent the disruption of dermal structure, as observed by SEM. Dispase II can be used to remove cell better than trypsin in the periodic pressurized technique. However, in vivo study indicated that numerous fibroblast from the host tissue infiltrated into ADM prepared using both enzymes. Neo-collagen and neo-capillaries were produced in both implanted ADMs. The result elucidated that the use of periodic pressurized technique with enzymatic treatment has a high potential to be a new method to produce ADM for skin tissue engineering.
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Affiliation(s)
- Isarawut Prasertsung
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
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Tischer T, Vogt S, Aryee S, Steinhauser E, Adamczyk C, Milz S, Martinek V, Imhoff AB. Tissue engineering of the anterior cruciate ligament: a new method using acellularized tendon allografts and autologous fibroblasts. Arch Orthop Trauma Surg 2007; 127:735-41. [PMID: 17541614 DOI: 10.1007/s00402-007-0320-0] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2006] [Indexed: 01/31/2023]
Abstract
INTRODUCTION The availability of autogenous tendons (middle part of patellar tendon, semitendinosus/gracilis, or quadriceps tendon) for cruciate ligament reconstructions is restricted and related to withdrawal morbidity. Allografts and synthetic ligament materials often show problems regarding long-term stability and immunological reactions. Therefore, the aim of this study was to develop and characterize a new scaffold based on acellular allografts seeded with autologous cells for tissue engineering of the anterior cruciate ligament (ACL). MATERIALS AND METHODS Semitendinosus tendons of New Zealand White (NZW) rabbits were harvested and acellularized using the detergent sodium dodecyle sulfate (SDS) as the main ingredient. After that, cultured (37 degrees C, 5% CO(2), medium) dermal fibroblasts were injected into the tendons. These constructs were further cultivated for 4, 7, or 14 days under the same culture conditions. Native, acellular, and seeded tendons underwent biomechanical testing (ultimate load to failure [N], stiffness [N/mm], and elongation [%], each n = 9] and histological hematoxylin-eosin (H.E.) staining. Detailed immunohistochemical (collagen I, III, IV, VI, pro-collagen I, versican, and vimentin) analyses were conducted to detect changes in the composition and structure of the extracellular matrix (ECM) after acellularization. RESULTS Histologically, a cell-free, crimped slack tendon structure after acellularization and a good integration of the cells after injection (4, 7, and 14 days) were seen. Metabolic activity of the seeded cells was demonstrated by positive immunohistochemical staining for pro-collagen I, which was negative in nonseeded constructs. Major differences in staining patterns of the various other ECM components were not observed. Biomechanically, the maximum load to failure of these tendons was comparable to native tendons (P = 0.429; native 134.5 +/- 12.9 N; acellular 118.5 +/- 7.3 N; seeded 132.3 +/- 5.6 N). Stiffness and elongation were comparable between native and acellular tendons, but differed significantly after seeding (P < 0.001). CONCLUSION The described method is suitable to make tendons completely cell free without changing their major biomechanical properties. Preservation of the ECM and of the collagen fiber structure by this method should give an ideal environment for autologous cell integration and metabolic activity in contrast to other approaches for tissue acellularization. The cell disruption and extraction of cell detritus should minimize adverse immunogenic reactions.
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Affiliation(s)
- Thomas Tischer
- Department of Orthopaedic Sport Surgery, Technical University of Munich, Connollystr 32, 80809, Munich, Germany.
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Xu CC, Chan RW, Tirunagari N. A Biodegradable, Acellular Xenogeneic Scaffold for Regeneration of the Vocal Fold Lamina Propria. ACTA ACUST UNITED AC 2007; 13:551-66. [PMID: 17518602 DOI: 10.1089/ten.2006.0169] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A novel method for preparing an acellular xenogeneic extracellular matrix scaffold for tissue engineering was developed. Bovine vocal fold lamina propria specimens were treated with high-concentration sodium chloride, nucleic acid digestion, and ethanol dehydration for decellularization and removal of immunogenic foreign epitopes. Human vocal fold fibroblasts from primary culture were seeded onto the acellular scaffolds and cultured for 21 days. The decellularized and the recellularized scaffolds were examined by light microscopy, fluorescent microscopy, and scanning electron microscopy. Collagen synthesis and release by fibroblasts were quantified by the Sircol assay, whereas the synthesis and release of hyaluronic acid, decorin, and fibronectin were assessed by enzyme-linked immunosorbent assays. Viscoelastic shear properties of the scaffolds were quantified by a simple-shear rheometer at frequencies of up to 250 Hz. Preliminary results showed that a biodegradable, acellular extracellular matrix scaffold with an intact basement membrane and 3-dimensional structure of the matrix proteins was engineered. Vocal fold fibroblasts readily attached to and infiltrated the scaffold with high viability and active protein synthesis, demonstrating the biocompatibility. The elastic shear modulus and dynamic viscosity of the acellular scaffold and the fibroblast-repopulated scaffold were comparable to those of the human vocal fold cover. These findings support the potential of the scaffold as a xenograft for vocal fold reconstruction and regeneration.
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Affiliation(s)
- Chet C Xu
- Graduate Program in Biomedical Engineering, University of Texas Southwestern Medical Center, Dallas, TX 75390-9035, USA
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Xu CC, Chan RW, Tirunagari N. A Biodegradable, Acellular Xenogeneic Scaffold for Regeneration of the Vocal Fold Lamina Propria. ACTA ACUST UNITED AC 2006. [DOI: 10.1089/ten.2007.13.ft-328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Ozdemir R, Ulusoy MG, Kocer U, Karaaslan O, Sahin B, Culha E, Bayiz U. Evaluation of osteogenic and chondrogenic activities of prefabricated periallografts. J Craniofac Surg 2005; 16:1015-22. [PMID: 16327549 DOI: 10.1097/01.scs.0000183467.85460.fb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Reconstruction of cartilage and bone defects has always been a challenging problem for the surgeon. Basic elements that are responsible for the repair process of these tissues are periost and perichondrium. Although several methods for the use of periost and perichondrium are proposed in the literature, the osteogenic and chondrogenic capacities of these tissues were shown to be the most important factor for a successful outcome. Bone and cartilage formation in acellular dermal matrix (ADM) prefabricated with periost and perichondrium was studied in 20 New Zealand rabbits. Morphologic and histologic evaluation and comparison of the newly formed tissues were evaluated. Four rabbits were excluded from the study because of infection, and specimens were obtained at 4, 6, 8, and 12 weeks after the study began from the remaining 16 rabbits. A gradual increase in bone and cartilage tissue formation through the 4th to 12th weeks was documented by reason of perichondrium and periost activation infiltrating into acellular dermal allografts. In view of the data obtained, it was concluded that periost or perichondrium prefabricated over ADM may be an alternative technique of cartilage and bone formation that may provide adequate tissue with elastic and osteo- and chondroconductive properties for the reconstruction of challenging defects.
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Affiliation(s)
- Ragip Ozdemir
- Plastic and Reconstructive Surgery Clinic Hospital, Ankara, Turkey. ragipoya(5)@hotmail.com
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