Comparison of five dermal substitutes in full-thickness skin wound healing in a porcine model

Department of Plastic Surgery, Hôpital Nord, Chemin des Bourrely, 13915 Marseille, France.
Burns: journal of the International Society for Burn Injuries (Impact Factor: 1.88). 05/2012; 38(6):820-9. DOI: 10.1016/j.burns.2012.02.008
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The wound healing attributes of five acellular dermal skin substitutes were compared, in a two-step procedure, in a porcine model. Ten pigs were included in this experimental and randomized study. During the first step, dermal substitutes (Integra(®), ProDerm(®), Renoskin(®), Matriderm(®) 2mm and Hyalomatrix(®) PA) were implanted into full-thickness skin wounds and the epidermis was reconstructed during a second step procedure at day 21 using autologous split-thickness skin graft or cultured epithelial autograft. Seven pigs were followed-up for 2 months and 3 pigs for 6 months. Dermal substitute incorporation, epidermal graft takes, wound contraction and Vancouver scale were assessed, and histological study of the wounds was performed. Results showed significant differences between groups in dermis incorporation and in early wound contraction, but there was no difference in wound contraction and in Vancouver scale after 2 and 6 months of healing. We conclude there was no long-term difference of scar qualities in our study between the different artificial dermis. More, there was no difference between artificial dermis and the control group. This study makes us ask questions about the benefit of artificial dermis used in a two-step procedure.

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Available from: Serge Mordon, Jun 11, 2015
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    • "In addition, unlike other artificial dermal matrices previously used, successful engraftment using Matriderm and a one-step skin-grafting procedure has been reported in vitro [14], in vivo [15,16,17,18] and in clinical trials [19]. In our results, the survival rate was 96.77%, and this result was the same level as a study using an alternative dermal matrix [1,6]. These results suggest that Matriderm does not a significant negative influence the survival rate of a skin graft and can be reliably and feasibly used clinically. "
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    ABSTRACT: Background For patients with full thickness skin defects, autologous Split-thickness skin grafts (STSG) are generally regarded as the mainstay of treatment. However, skin grafts have some limitations, including undesirable outcomes resulting from scars, poor elasticity, and limitations in joint movement due to contractures. In this study, we present outcomes of Matriderm grafts used for various skin tissue defects whether it improves on these drawbacks. Methods From January 2010 to March 2012, a retrospective review of patients who had undergone autologous STSG with Matriderm was performed. We assessed graft survival to evaluate the effectiveness of Matriderm. We also evaluated skin quality using a Cutometer, Corneometer, Tewameter, or Mexameter, approximately 12 months after surgery. Results A total of 31 patients underwent STSG with Matriderm during the study period. The success rate of skin grafting was 96.7%. The elasticity value of the portion on which Matriderm was applied was 0.765 (range, 0.635-0.800), the value of the trans-epidermal water loss (TEWL) was 10.0 (range, 8.15-11.00) g/hr/m2, and the humidification value was 24.0 (range, 15.5-30.0). The levels of erythema and melanin were 352.0 arbitrary unit (AU) (range, 299.25-402.75 AU) and 211.0 AU (range, 158.25-297.00 AU), respectively. When comparing the values of elasticity and TEWL of the skin treated with Matriderm to the values of the surrounding skin, there was no statistically significant difference between the groups. Conclusions The results of this study demonstrate that a dermal substitute (Matriderm) with STSG was adopted stably and with minimal complications. Furthermore, comparing Matriderm grafted skin to normal skin using Cutometer, Matriderm proved valuable in restoring skin elasticity and the skin barrier.
    Archives of Plastic Surgery 07/2014; 41(4):330-6. DOI:10.5999/aps.2014.41.4.330
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    • "Artificial dermis is successful in improving contour and graft take onto bone, cartilage, or tendon (reviewed in Yannas et al., 2011). However, artificial dermis requires the use of autologous skin grafting with some native dermis present in the graft, and does not appear to improve long-term contracture or healing (Philandrianos et al., 2012). A dermal matrix that also contains keratinocytes or basal stem cells and is capable of resurfacing large wounds in one step has yet to be developed. "
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    ABSTRACT: Craniofacial disorders present markedly complicated problems in reconstruction because of the complex interactions of the multiple, simultaneously affected tissues. Regenerative medicine holds promise for new strategies to improve treatment of these disorders. This review addresses current areas of unmet need in craniofacial reconstruction and emphasizes how craniofacial tissues differ from their analogs elsewhere in the body. We present a problem-based approach to illustrate current treatment strategies for various craniofacial disorders, to highlight areas of need, and to suggest regenerative strategies for craniofacial bone, fat, muscle, nerve, and skin. For some tissues, current approaches offer excellent reconstructive solutions using autologous tissue or prosthetic materials. Thus, new "regenerative" approaches would need to offer major advantages in order to be adopted. In other tissues, the unmet need is great, and we suggest the greatest regenerative need is for muscle, skin, and nerve. The advent of composite facial tissue transplantation and the development of regenerative medicine are each likely to add important new paradigms to our treatment of craniofacial disorders.
    Frontiers in Physiology 12/2012; 3:453. DOI:10.3389/fphys.2012.00453 · 3.53 Impact Factor
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    ABSTRACT: Background: Currently, acellular dermal substitutes used for skin reconstruction are usually covered with split-thickness skin grafts. The goal of this study was to develop an animal model in which such dermal substitutes can be tested under standardized conditions using a bioengineered dermo-epidermal skin graft for coverage. Methods: Bioengineered grafts consisting of collagen type I hydrogels with incorporated human fibroblasts and human keratinocytes seeded on these gels were produced. Two different dermal substitutes, namely Matriderm(®), and an acellular collagen type I hydrogel, were applied onto full-thickness skin wounds created on the back of immuno-incompetent rats. As control, no dermal substitute was used. As coverage for the dermal substitutes either the bioengineered grafts were used, or, as controls, human split-thickness skin or neonatal rat epidermis were used. Grafts were excised 21 days post-transplantation. Histology and immunofluorescence was performed to investigate survival, epidermis formation, and vascularization of the grafts. Results: The bioengineered grafts survived on all tested dermal substitutes. Epidermis formation and vascularization were comparable to the controls. Conclusion: We could successfully use human bioengineered grafts to test different dermal substitutes. This novel model can be used to investigate newly designed dermal substitutes in detail and in a standardized way.
    Pediatric Surgery International 02/2013; 29(5). DOI:10.1007/s00383-013-3267-y · 1.00 Impact Factor
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