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De Francesco F, Ogawa R. From Time to Timer in Wound Healing Through the Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024. [PMID: 38842786 DOI: 10.1007/5584_2024_815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Hard-to-heal wounds are an important public health issue worldwide, with a significant impact on the quality of life of patients. It is estimated that approximately 1-2% of the global population suffers from difficult wounds, which can be caused by a variety of factors such as trauma, infections, chronic diseases like diabetes or obesity, or poor health conditions. Hard-to-heal wounds are often characterized by a slow and complicated healing process, which can lead to serious complications such as infections, pressure ulcers, scar tissue formation, and even amputations. These complications can have a significant impact on the mobility, autonomy, and quality of life of patients, leading to an increase in healthcare and social costs associated with wound care. The preparation of the wound bed is a key concept in the management of hard-to-heal wounds, with the aim of promoting an optimal environment for healing. The TIME (Tissue, Infection/Inflammation, Moisture, Edge) model is a systematic approach used to assess and manage wounds in a targeted and personalized way. The concept of TIMER, expanding the TIME model, further focuses on regenerative processes, paying particular attention to promoting tissue regeneration and wound healing in a more effective and comprehensive way. The new element introduced in the TIMER model is "Regeneration", which highlights the importance of activating and supporting tissue regeneration processes to promote complete and lasting wound healing. Regenerative therapies can include a wide range of approaches, including cellular therapies, growth factors, bioactive biomaterials, stem cell therapies, and growth factor therapies. These therapies aim to promote the formation of new healthy tissues, reduce inflammation, improve vascularization, and stimulate cellular proliferation to accelerate wound closure and prevent complications. Thanks to continuous progress in research and development of regenerative therapies, more and more patients suffering from difficult wounds can benefit from innovative and promising solutions to promote faster and more effective healing, improve quality of life, and reduce the risk of long-term complications.
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Affiliation(s)
- Francesco De Francesco
- Department of Reconstructive Surgery and Hand Surgery, Azienda Ospedaliera Universitaria delle Marche, Ancona, Italy.
| | - Rei Ogawa
- Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Tokyo, Japan
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di Summa PG, Di Marzio N, Jafari P, Jaconi ME, Nesic D. FastSkin ® Concept: A Novel Treatment for Complex Acute and Chronic Wound Management. J Clin Med 2023; 12:6564. [PMID: 37892702 PMCID: PMC10607178 DOI: 10.3390/jcm12206564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/26/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Successful treatments for acute and chronic skin wounds remain challenging. The goal of this proof-of-concept study was to assess the technical feasibility and safety of a novel wound treatment solution, FastSkin®, in a pig model. FastSkin® was prepared from skin micrografts patterned in blood using acoustic waves. Upon coagulation, the graft was transferred on a silicone sheet and placed on wounds. Six full-thickness wounds were created at the back of two pigs and treated with either FastSkin®, split-thickness skin graft (positive control), a gauze coverage (negative control, NC1), or blood patterned without micrografts (negative control, NC2). Silicone sheets were removed after 7, 14, and 21 days. Wound healing was monitored for six weeks and evaluated macroscopically for re-epithelialization and morphometrically for residual wound area and wound contraction. Tissue regeneration was assessed with histology after six weeks. Re-epithelialization was faster in wounds covered with FastSkin® treatments compared to NC2 and in NC2 compared to NC1. Importantly, an enhanced collagen organization was observed in FastSkin® in contrast to NC treatments. In summary, two clinically approved skin wound treatments, namely micrografting and blood clot graft, were successfully merged with sound-induced patterning of micrografts to produce an autologous, simple, and biologically active wound treatment concept.
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Affiliation(s)
- Pietro G. di Summa
- Department of Plastic and Hand Surgery, University Hospital of Lausanne (CHUV), University of Lausanne (UNIL), 1015 Lausanne, Switzerland;
| | - Nicola Di Marzio
- AO Research Institute Davos, 7270 Davos, Switzerland;
- Department of Health Sciences, Università del Piemonte Orientale (UPO), 28100 Novara, Italy
| | - Paris Jafari
- Center for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland;
| | - Marisa E. Jaconi
- Department of Basic Neurosciences, University of Geneva, 1211 Geneva, Switzerland;
| | - Dobrila Nesic
- Division of Fixed Prosthodontics and Biomaterials, University Clinic of Dental Medicine, University of Geneva, Rue Michel-Servet 1, 1211 Geneva, Switzerland
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3
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Pereira DA, Mendes PGJ, Prisinoto NR, de Rezende Barbosa GL, Soares PBF, de Oliveira GJPL. Advanced platelet-rich-fibrin (A-PRF +) has no additional effect on the healing of post-extraction sockets of upper third molars. A split mouth randomized clinical trial. Oral Maxillofac Surg 2023; 27:411-419. [PMID: 35614276 DOI: 10.1007/s10006-022-01075-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 05/13/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE This study evaluated the effects of advanced platelet-rich fibrin (A-PRF +) on the healing of upper third molar post-extraction sockets. METHODS Sixteen patients who underwent extractions of the upper third molars (18 and 28) were included in this randomized split-mouth study. The alveoli on the test side were filled with A-PRF + , while the control side was maintained with blood clot. The side that received treatment was randomly defined. Alveolar bone regeneration was evaluated by CBCT scans to assess healing stage, bone density, and fractal analysis 1 week and 90 days post-extraction. Additionally, pain, edema, bleeding, and soft tissue alveolar repair were evaluated by clinical analyses 3, 7, 14, 30, and 90 days after the surgical procedure using a visual analog scale. RESULTS There were no clinical differences regarding treatments in any experimental period. In the tomographic evaluation, at 7 days, the alveoli treated with A-PRF + presented a suggestive sign of higher bone density than the control alveoli, which was not confirmed 90 days after the surgical procedure. CONCLUSION Thus, the use of A-PRF + does not demonstrate a clinical advantage in the repair of post-extraction sockets of upper third molars.
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Affiliation(s)
- Davisson Alves Pereira
- Department of Periodontology, School of Dentistry, Federal University of Uberlandia - UFU, Uberlândia, MG, Brazil
| | - Pedro Gomes Junqueira Mendes
- Department of Periodontology, School of Dentistry, Federal University of Uberlandia - UFU, Uberlândia, MG, Brazil
| | - Nuryê Rezende Prisinoto
- Department of Periodontology, School of Dentistry, Federal University of Uberlandia - UFU, Uberlândia, MG, Brazil
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Mourão CF, Lowenstein A, Mello-Machado RC, Ghanaati S, Pinto N, Kawase T, Alves GG, Messora MR. Standardization of Animal Models and Techniques for Platelet-Rich Fibrin Production: A Narrative Review and Guideline. Bioengineering (Basel) 2023; 10:482. [PMID: 37106669 PMCID: PMC10135737 DOI: 10.3390/bioengineering10040482] [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: 03/01/2023] [Revised: 04/07/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Experimental research is critical for advancing medical knowledge and enhancing patient outcomes, including in vitro and in vivo preclinical assessments. Platelet-rich fibrin (PRF) is a blood by-product that has garnered attention in the medical and dental fields due to its potential for tissue regeneration and wound healing. Animal models, such as rabbits and rats, have been used to produce PRF and examine its properties and applications. PRF has demonstrated potential in the dental and medical fields for reducing inflammation, promoting tissue repair, and accelerating wound healing. This narrative review aims to compare existing evidence and provide guidelines for PRF animal research, emphasizing the importance of standardizing animal models, following ethical considerations, and maintaining transparency and accountability. The authors highlight the necessity to use the correct relative centrifugal force (RCF), standardize centrifugal calibration, and report detailed information about blood collection and centrifuge parameters for reproducible results. Standardizing animal models and techniques is crucial for narrowing the gap between laboratory research and clinical applications, ultimately enhancing the translation of findings from bench to bedside.
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Affiliation(s)
- Carlos Fernando Mourão
- Department of Periodontology, Division of Dental Research Administration, Tufts University School of Dental Medicine, Boston, MA 02111, USA
| | - Adam Lowenstein
- Department of Periodontology, Division of Dental Research Administration, Tufts University School of Dental Medicine, Boston, MA 02111, USA
| | | | - Shahram Ghanaati
- Frankfurt Oral Regenerative Medicine, Clinic for Maxillofacial and Plastic Surgery, Johann Wolfgang Goethe University, 60596 Frankfurt Am Main, Germany
| | - Nelson Pinto
- Department of Periodontics and Implant Dentistry, University of the Andes, Santiago 12455, Chile
| | - Tomoyuki Kawase
- Division of Oral Bioengineering, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8514, Japan
| | - Gutemberg Gomes Alves
- Clinical Research Unit, Antonio Pedro Hospital, Fluminense Federal University, Niterói 24033-900, Brazil
| | - Michel Reis Messora
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto 14040-904, Brazil
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Cheremkhina M, Klein S, Babendreyer A, Ludwig A, Schmitz-Rode T, Jockenhoevel S, Cornelissen CG, Thiebes AL. Influence of Aerosolization on Endothelial Cells for Efficient Cell Deposition in Biohybrid and Regenerative Applications. MICROMACHINES 2023; 14:575. [PMID: 36984982 PMCID: PMC10053765 DOI: 10.3390/mi14030575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/11/2023] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
The endothelialization of gas exchange membranes can increase the hemocompatibility of extracorporeal membrane oxygenators and thus become a long-term lung replacement option. Cell seeding on large or uneven surfaces of oxygenator membranes is challenging, with cell aerosolization being a possible solution. In this study, we evaluated the endothelial cell aerosolization for biohybrid lung application. A Vivostat® system was used for the aerosolization of human umbilical vein endothelial cells with non-sprayed cells serving as a control. The general suitability was evaluated using various flow velocities, substrate distances and cell concentrations. Cells were analyzed for survival, apoptosis and necrosis levels. In addition, aerosolized and non-sprayed cells were cultured either static or under flow conditions in a dynamic microfluidic model. Evaluation included immunocytochemistry and gene expression via quantitative PCR. Cell survival for all tested parameters was higher than 90%. No increase in apoptosis and necrosis levels was seen 24 h after aerosolization. Spraying did not influence the ability of the endothelial cells to form a confluent cell layer and withstand shear stresses in a dynamic microfluidic model. Immunocytochemistry revealed typical expression of CD31 and von Willebrand factor with cobble-stone cell morphology. No change in shear stress-induced factors after aerosolization was reported by quantitative PCR analysis. With this study, we have shown the feasibility of endothelial cell aerosolization with no significant changes in cell behavior. Thus, this technique could be used for efficient the endothelialization of gas exchange membranes in biohybrid lung applications.
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Affiliation(s)
- Maria Cheremkhina
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute Aachen, RWTH Aachen University, Forckenbeckstraße 55, 52074 Aachen, Germany
- Aachen-Maastricht Institute for Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Sarah Klein
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute Aachen, RWTH Aachen University, Forckenbeckstraße 55, 52074 Aachen, Germany
- Aachen-Maastricht Institute for Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Aaron Babendreyer
- Institute of Molecular Pharmacology, University Hospital RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Andreas Ludwig
- Institute of Molecular Pharmacology, University Hospital RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Thomas Schmitz-Rode
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute Aachen, RWTH Aachen University, Forckenbeckstraße 55, 52074 Aachen, Germany
| | - Stefan Jockenhoevel
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute Aachen, RWTH Aachen University, Forckenbeckstraße 55, 52074 Aachen, Germany
- Aachen-Maastricht Institute for Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Christian G. Cornelissen
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute Aachen, RWTH Aachen University, Forckenbeckstraße 55, 52074 Aachen, Germany
- Department of Pneumology and Internal Intensive Care Medicine, Medical Clinic V, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Anja Lena Thiebes
- Department of Biohybrid & Medical Textiles (BioTex), AME-Institute of Applied Medical Engineering, Helmholtz Institute Aachen, RWTH Aachen University, Forckenbeckstraße 55, 52074 Aachen, Germany
- Aachen-Maastricht Institute for Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
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Knightly N, Lee C, O’Brien L, Qayyum T, Hurley C, Kelly J. Role for platelet rich plasma as an adjuvant therapy in wound healing and burns. EUROPEAN JOURNAL OF PLASTIC SURGERY 2023. [DOI: 10.1007/s00238-023-02050-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Abstract
Background
Platelet rich plasma (PRP) contains high concentrations of growth factors. Intuitively, these were thought to be of potential benefit in healing of chronic wounds, skin grafts and graft donor sites. This was echoed in retrospective studies and an individual case basis but had not been randomized.
Methods
A systematic search was carried out by two individuals, independently, on the MEDLINE, EMBASE and COCHRANE databases, according to PRISMA guidelines. All data analysis and statistics was pooled and analysed using the Cochrane RevMan Software.
Results
Split thickness grafts have been described by numerous authors, but PRP use did not offer a significant advantage in graft take in pooled results (MD 5.83, 95% CI − 0.69 to 12.25, random-effects, p = 0.08). The analysis of included randomized controlled trials has shown favourable split-thickness skin graft donor site healing in the PRP group (MD − 5.55, 95% CI − 7.40 to − 3.69, random-effects, p = < 0.00001) compared to the control group. For carpal tunnel syndrome, the pooled results showed no difference in functional scores vs steroid injections (SMD − 0.68, 95% CI − 1.47 to 0.10, randomeffects, p = 0.09) or indeed splinting groups.
Conclusions
With the current body of evidence, we conclude that the use of PRP as an adjuvant therapy in skin grafts, burns, carpal tunnel surgery or scars cannot be rationalised. A potential use of PRP is in donor site management but the cost of this would be difficult to justify.
Level of evidence: Not ratable.
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Yamamoto Y, Fujihara H, Kirita M, Soejima K. Micronized Dermal Grafts (RIGENERATM) and Split-Thickness Skin Grafts Alone or in Combination for Deep Dermal Burn Wounds. BURNS OPEN 2022. [DOI: 10.1016/j.burnso.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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8
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Desando G, Grigolo B, Deangelles Pereira Florentino Á, Teixeira MW, Barbagallo F, Naro F, da Silva-Júnior VA, Soares AF. Preclinical Evidence of Intra-Articular Autologous Cartilage Micrograft for Osteochondral Repair: Evaluation in a Rat Model. Cartilage 2021; 13:1770S-1779S. [PMID: 34474579 PMCID: PMC8804823 DOI: 10.1177/19476035211042408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE The search for an effective and long-lasting strategy to treat osteochondral defects (OCD) is a great challenge. Regenerative medicine launched a new era of research in orthopaedics for restoring normal tissue functions. The aim of this study was to test the healing potential of Rigenera micrografting technology in a rat model of OCD by investigating 2 cartilage donor sites. METHODS Full-thickness OCD was bilaterally created in the knee joints of rats. Animals were randomly divided into 2 groups based on the anatomical site used for micrograft collection: articular (TO) and xiphoid (XA). Micrograft was injected into the knee via an intra-articular approach. The contralateral joint served as the control. Euthanasia was performed 2 months after the set-up of OCD. Histological evaluations foresaw hematoxylin/eosin and safranin-O/fast green staining, the modified O'Driscoll score, and collagen 1A1 and 2A1 immunostaining. Kruskal-Wallis and the post hoc Dunn test were performed to evaluate differences among groups. RESULTS Histological results showed defect filling in both autologous micrografts. The TO group displayed tissue repair with more hyaline-like characteristics than its control (P < 0.01). A fibrocartilaginous aspect was instead noticed in the XA group. Immunohistochemical assessments on type 2A1 and type 1 collagens confirmed the best histological results in the TO group. CONCLUSIONS TO and XA groups contributed to a different extent to fill the OCD lesions. TO group provided the best histological and immunohistochemical results; therefore, it could be a promising method to treat OCD after the validation in a larger animal model.
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Affiliation(s)
- Giovanna Desando
- Laboratorio RAMSES, IRCCS Istituto
Ortopedico Rizzoli, Bologna, Italy
| | - Brunella Grigolo
- Laboratorio RAMSES, IRCCS Istituto
Ortopedico Rizzoli, Bologna, Italy,Brunella Grigolo, Laboratorio RAMSES, IRCCS
Istituto Ortopedico Rizzoli, Via di Barbiano, 1/10, Bologna, Emilia-Romagna
40136, Italy.
| | | | | | - Federica Barbagallo
- Department of Experimental Medicine,
Sapienza University of Rome, Rome, Italy
| | - Fabio Naro
- Department of Anatomical, Histological,
Forensic and Orthopaedic Sciences, Sapienza University of Rome, Rome, Italy
| | | | - Anísio Francisco Soares
- Department of Animal Morphology and
Physiology, Federal Rural University of Pernambuco–UFRPE, Brazil
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Hanriat C, Barani C, Mojallal A, Braye F, Brosset S. [Not Available]. ANNALS OF BURNS AND FIRE DISASTERS 2021; 34:33-41. [PMID: 34054385 PMCID: PMC8126368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 09/13/2020] [Indexed: 06/12/2023]
Abstract
Platelet rich plasma (PRP) has trophic functions due to a high concentration of growth factors and cytokines. These properties may be of therapeutic interest in the management of burn injuries. In preparation for a clinical study at the Lyon Burn Centre on PRP as an inducer of healing in burns, we carried out a review of the literature looking at the results of the use of this therapy. A review of the literature on the use of PRP for the treatment of burn injuries was performed by querying the PUBMED database using the keywords [platelet rich plasma] AND [burns]. Controlled clinical or pre-clinical studies in English or French were included. Eleven articles were identified, consisting of eight preclinical animal model studies and three clinical studies. These looked at the effects of PRP on the healing of burned areas whether they were grafted or not, on the improvement of neuropathic pain, and on distant skin trophicity. The results of recent preclinical studies show shorter epithelialization times thanks to PRP. In humans, a significant study (201 patients) validates its use in combination with thin skin grafts, and another shows benefits on distant cutaneous trophicity. In conclusion, the use of PRP topically or by injection under the skin has a potential benefit in the management of acute burns. A large-scale series validates its use in clinical practice.
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Affiliation(s)
- C. Hanriat
- Centre de Traitement des Brûlés Pierre Colson, Hôpital Édouard Herriot, Lyon, France
- Service de Chirurgie Plastique, Esthétique et Reconstructrice, Hôpital de la Croix Rousse, Lyon, France
| | - C. Barani
- Centre de Traitement des Brûlés Pierre Colson, Hôpital Édouard Herriot, Lyon, France
- Service de Chirurgie Plastique, Esthétique et Reconstructrice, Hôpital de la Croix Rousse, Lyon, France
| | - A. Mojallal
- Service de Chirurgie Plastique, Esthétique et Reconstructrice, Hôpital de la Croix Rousse, Lyon, France
| | - F. Braye
- Centre de Traitement des Brûlés Pierre Colson, Hôpital Édouard Herriot, Lyon, France
- Service de Chirurgie Plastique, Esthétique et Reconstructrice, Hôpital de la Croix Rousse, Lyon, France
| | - S. Brosset
- Centre de Traitement des Brûlés Pierre Colson, Hôpital Édouard Herriot, Lyon, France
- Service de Chirurgie Plastique, Esthétique et Reconstructrice, Hôpital de la Croix Rousse, Lyon, France
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Marcarelli M, Zappia M, Rissolio L, Baroni C, Astarita C, Trovato L, Graziano A. Cartilage Micrografts as a Novel Non-Invasive and Non-Arthroscopic Autograft Procedure for Knee Chondropathy: Three-Year Follow-Up Study. J Clin Med 2021; 10:jcm10020322. [PMID: 33477260 PMCID: PMC7830188 DOI: 10.3390/jcm10020322] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 12/19/2022] Open
Abstract
(1) Background: Focal chondral defects of the knee can significantly impair patient quality of life. Although different options are available, they are still not conclusive and have several limitations. The aim of this study was to evaluate the role of autologous cartilage micrografts in the treatment of knee chondropathy. (2) Methods: Eight patients affected by knee chondropathy were evaluated before and after 6 months and 3 years following autologous cartilage micrografts by magnetic resonance imaging (MRI) for cartilage measurement and clinical assessment. (3) Results: All patients recovered daily activities, reporting pain reduction without the need for analgesic therapy; Oxford Knee Score (OKS) was 28.4 ± 6 and 40.8 ± 6.2 and visual analogue scale (VAS) was 5.5 ± 1.6 and 1.8 ± 0.7 before and after 6 months following treatment, respectively. Both scores remained stable after 3 years. Lastly, a significant improvement of the cartilage thickness was observed using MRI after 3 years. (4) Conclusions: Autologous cartilage micrografts can promote the formation of new cartilage, and could be a valid approach for the treatment of knee chondropathy.
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Affiliation(s)
- Marco Marcarelli
- Unit of Orthopedics and Traumatology of Chieri and Moncalieri, Santa Croce Hospital, 10024 Turin, Italy; (M.M.); (L.R.); (C.B.)
| | - Marcello Zappia
- Department of Medicine and Health Sciences, University of Molise, 86100 Campobasso, Italy;
| | - Lorenzo Rissolio
- Unit of Orthopedics and Traumatology of Chieri and Moncalieri, Santa Croce Hospital, 10024 Turin, Italy; (M.M.); (L.R.); (C.B.)
| | - Chiara Baroni
- Unit of Orthopedics and Traumatology of Chieri and Moncalieri, Santa Croce Hospital, 10024 Turin, Italy; (M.M.); (L.R.); (C.B.)
| | - Carlo Astarita
- Human Brain Wave, Corso Galileo Ferraris, 63, 10128 Turin, Italy;
- Sbarro Institute for Cancer Research and Molecular Medicine, Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA 19126, USA;
- Correspondence:
| | - Letizia Trovato
- Sbarro Institute for Cancer Research and Molecular Medicine, Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA 19126, USA;
| | - Antonio Graziano
- Human Brain Wave, Corso Galileo Ferraris, 63, 10128 Turin, Italy;
- Sbarro Institute for Cancer Research and Molecular Medicine, Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA 19126, USA;
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11
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Nie J, Zhang S, Wu P, Liu Y, Su Y. Electrospinning With Lyophilized Platelet-Rich Fibrin Has the Potential to Enhance the Proliferation and Osteogenesis of MC3T3-E1 Cells. Front Bioeng Biotechnol 2020; 8:595579. [PMID: 33335895 PMCID: PMC7736634 DOI: 10.3389/fbioe.2020.595579] [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: 08/17/2020] [Accepted: 11/12/2020] [Indexed: 11/23/2022] Open
Abstract
Platelet-rich fibrin (PRF) as a reservoir of various growth factors plays an essential role in wound healing and tissue engineering at present. Electrospinning technology is an efficient approach to acquire artificial scaffold which has large specific surface area and high porosity. The goal of this study was to investigate the potential of electrospinning on the proliferation and osteogenesis of osteogenic precursor cells in vitro, with lyophilized PRF added as a component for electrospinning preparation. The surface structure of lyophilized PRF and nanofibers were investigated, and the proliferation, osteogenesis of MEC3T3-E1 cells with lyophilized PRF or nanofibers extract were studied. The results showed that the diameters of the lyophilized PRF pores were 1.51 ± 0.75 μm, and lyophilized PRF medium promoted the proliferation and osteocalcin (OCN) and osteopontin (OPN) genes expression of MEC3T3-E1 cells. Furthermore, the diameters of the polyvinyl alcohol/sodium alginate/lyophilized PRF (PVA/SA/PRF) fibers were 201.14 ± 40.14 nm. Compared to PVA/SA nanofibers extract and control medium, PVA/SA/PRF nanofibers extract also enhanced the proliferation and mineralization activity of MEC3T3-E1 cells. These results might be instructive to future therapeutics with PVA/SA/PRF electrospinning for bone tissue engineering or other applications.
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Affiliation(s)
- Jing Nie
- Stomatological Hospital of Xiamen Medical College, Xiamen, China.,Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, China.,Engineering Research Center for Stomatological Biomaterials, Xiamen Medical College, Xiamen, China
| | - Shumei Zhang
- Stomatological Hospital of Xiamen Medical College, Xiamen, China.,Engineering Research Center for Stomatological Biomaterials, Xiamen Medical College, Xiamen, China
| | - Peng Wu
- Technology Innovation Center for Exploitation of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
| | - Yuangang Liu
- College of Chemical Engineering, Huaqiao University, Xiamen, China
| | - Yanjun Su
- Stomatological Hospital of Xiamen Medical College, Xiamen, China.,Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen, China.,Engineering Research Center for Stomatological Biomaterials, Xiamen Medical College, Xiamen, China
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12
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Full-thickness Skin Micro-columns within a Dermal Matrix: A Novel Method for "Donor-free" Skin Replacement. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2020; 8:e3304. [PMID: 33425612 PMCID: PMC7787311 DOI: 10.1097/gox.0000000000003304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 10/21/2020] [Indexed: 12/16/2022]
Abstract
Split-thickness skin graft has been the standard in the coverage of large full-thickness skin defects. However, donor sites can be associated with significant pain and scarring. Further, the recipient sites frequently lack some basic skin functions, such as temperature regulation, uniform texture, appropriate color, normal pliability, elasticity, and lubrication. Full-thickness skin grafts, while able to more adequately recapitulate skin function, have even greater donor site requirements. Implantation of full-thickness skin micro-columns is a relatively novel concept in which the skin is harvested orthogonally rather than tangentially. These micro-columns contain elements of full-thickness skin grafts, including reticular dermal fibroblasts, hair follicles, skin adnexa, and adipose tissue-all elements that contribute to skin function. Notably, it has been shown that the diameter of the skin micro-columns determine donor site morbidity; however, in most cases, full-thickness skin micro-column harvest results in a trivial donor site far less invasive or morbid than a traditional full-thickness skin graft or split-thickness skin graft harvest. Here, we present 2 cases in which full-thickness skin micro-columns were harvested and implanted into a bilayer dermal regeneration matrix (Integra) to achieve durable single-stage skin replacement with practically no donor site morbidity.
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Takagi S, Oyama T, Jimi S, Saparov A, Ohjimi H. A Novel Autologous Micrografts Technology in Combination with Negative Pressure Wound Therapy (NPWT) for Quick Granulation Tissue Formation in Chronic/Refractory Ulcer. Healthcare (Basel) 2020; 8:healthcare8040513. [PMID: 33255590 PMCID: PMC7712274 DOI: 10.3390/healthcare8040513] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/15/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023] Open
Abstract
Negative pressure wound therapy (NPWT) has been commonly used over the years for a wide range of chronic/refractory lesions. Alternatively, autologous micrografting technology is recently becoming a powerful modality for initiating wound healing. The case presented is of a patient with a lower leg ulcer that had responded poorly to NPWT alone for three weeks. Consequently, the patient was put on a combination therapy of NPWT and micrografting. After injection of a dermal tissue micrografts suspension into the entire wound bed, NPWT was performed successively for two weeks, resulting in fresh granulation tissue formation. Thereafter, the autologous skin graft was taken well. This case study indicates that for a chronic/refractory ulcer patient with poor NPWT outcome, combination therapy using micrografting treatment and NPWT could rapidly initiate and enhance granulation tissue formation, creating a favorable bedding for subsequent skin grafting.
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Affiliation(s)
- Satoshi Takagi
- Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan; (T.O.); (H.O.)
- Correspondence:
| | - Takuto Oyama
- Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan; (T.O.); (H.O.)
| | - Shiro Jimi
- Central Lab for Pathology and Morphology, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan;
| | - Arman Saparov
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;
| | - Hiroyuki Ohjimi
- Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan; (T.O.); (H.O.)
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Araújo CRG, Astarita C, D’Aquino R, Pelegrine AA. Evaluation of Bone Regeneration in Rat Calvaria Using Bone Autologous Micrografts and Xenografts: Histological and Histomorphometric Analysis. MATERIALS 2020; 13:ma13194284. [PMID: 32992850 PMCID: PMC7579544 DOI: 10.3390/ma13194284] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/17/2020] [Accepted: 09/21/2020] [Indexed: 12/11/2022]
Abstract
The aim of this study was to investigate the effect of the use of autologous micrografts obtained by the Rigenera® Micrografting Technology and xenograft on critical size defects created in the calvaria of rats. Forty-eight rats were randomly divided into four groups for each of the two evaluation times (15 and 30 days) (n = 6). After general anesthesia, a 5-mm diameter bone defect was created in the calvaria of each animal. Each defect was filled with the following materials: blood clot, autologous bone graft, xenograft, and xenograft associated with autologous micrografts. Histomorphometric and histological analysis showed that the group that have received the Rigenera® processed autologous micrografts combined with the xenograft and the group that received autologous bone graft resulted in greater bone formation in both time points when compared with the use of the xenograft alone and blood clot.
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Affiliation(s)
- Carlos R. G. Araújo
- Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Department of Implant Dentistry, Campinas 13045-755, Brazil; (C.R.G.A.); (A.A.P.)
| | - Carlo Astarita
- Human Brain Wave Srl, corso Galileo Ferraris 63, 10128 Turin, Italy;
- Sbarro Institute for Cancer Research and Molecular Medicine, Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
- Correspondence:
| | - Riccardo D’Aquino
- Human Brain Wave Srl, corso Galileo Ferraris 63, 10128 Turin, Italy;
| | - André A. Pelegrine
- Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Department of Implant Dentistry, Campinas 13045-755, Brazil; (C.R.G.A.); (A.A.P.)
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Petrescu BN, Mirica IC, Miron R, Campian RS, Lucaciu O. Platelet rich fibrin as a gingival tissue regeneration enhancer. J Dent Sci 2020; 16:536-539. [PMID: 33384845 PMCID: PMC7770353 DOI: 10.1016/j.jds.2020.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/26/2020] [Indexed: 12/25/2022] Open
Abstract
Tissue regenerative procedures aim to enhance regeneration of altered tissue. Extensive research has been carried out in this area and all proposed procedures present limitations. In this context the area of platelet-rich fibrin (PRF) research has gained tremendous awareness in the latest years. PRF is a low-cost regenerative modality that facilitates soft tissue regeneration derived from 100% autologous sources. It forms a fibrin mesh that liberates growth factors in a slow and prolonged manner and also contains supra-physiological concentrations of leukocytes. Reports from the literature have suggested that these leukocyte-rich blood-preparations are capable of improving wound healing, diminishing post-operative pain, and additionally minimizing the risk of infection. In our article we present the first clinical case where PRF was used as a wound healing accelerator of gingival lesions in a chemical soft tissue burn after teeth whitening.
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Affiliation(s)
- Bianca Nausica Petrescu
- Department of Oral Health, Faculty of Dentistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Codruta Mirica
- Department of Oral Health, Faculty of Dentistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Richard Miron
- Department of Periodontology, University of Berne, Berne, Switzerland
| | - Radu Septimiu Campian
- Department of Oral Health, Faculty of Dentistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ondine Lucaciu
- Department of Oral Health, Faculty of Dentistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Platelet-Rich Fibrin Can Neutralize Hydrogen Peroxide-Induced Cell Death in Gingival Fibroblasts. Antioxidants (Basel) 2020; 9:antiox9060560. [PMID: 32604944 PMCID: PMC7346145 DOI: 10.3390/antiox9060560] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 12/15/2022] Open
Abstract
Hydrogen peroxide is a damage signal at sites of chronic inflammation. The question arises whether platelet-rich fibrin (PRF), platelet-poor plasma (PPP), and the buffy coat can neutralize hydrogen peroxide toxicity and thereby counteract local oxidative stress. In the present study, gingival fibroblasts cells were exposed to hydrogen peroxide with and without lysates obtained from PRF membranes, PPP, heated PPP (75 °C for 10 min), and the buffy coat. Cell viability was examined by trypan blue staining, live-dead staining, and formazan crystal formation. Cell apoptosis was assessed by cleaved caspase-3 Western blot analysis. Reverse transcription-quantitative polymerase chain reaction (RT-PCR) was utilized to determine the impact of PRF lysates on the expression of catalase in fibroblasts. It was reported that lysates from PRF, PPP, and the buffy coat—but not heated PPP—abolished the hydrogen peroxide-induced toxicity in gingival fibroblasts. Necrosis was confirmed by a loss of membrane integrity and apoptosis was ruled out by the lack of cleavage of caspase-3. Aminotriazole, an inhibitor of catalase, reduced the cytoprotective activity of PRF lysates yet blocking of glutathione peroxidase by mercaptosuccinate did not show the same effect. PRF lysates had no impact on the expression of catalase in gingival fibroblasts. These findings suggest that PRF, PPP, and the buffy coat can neutralize hydrogen peroxide through the release of heat-sensitive catalase.
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Zheng W, Zhao DL, Zhao YQ, Li ZY. Effectiveness of platelet rich plasma in burn wound healing: a systematic review and meta-analysis. J DERMATOL TREAT 2020; 33:131-137. [PMID: 32048887 DOI: 10.1080/09546634.2020.1729949] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Wang Zheng
- Department of Burns, The Fifth Hospital of Harbin, Harbin, China
| | - De-lai Zhao
- Orthopaedic Ward, The Fifth Hospital of Harbin, Harbin, China
| | - Yan-qiu Zhao
- Department of Hemato-Oncology, The First Affiliated Hospital Harbin, Harbin Medical University, Harbin, China
| | - Zong-yu Li
- Department of Burns, The Fifth Hospital of Harbin, Harbin, China
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Andreone A, de Hollander D. A case report on the effect of micrografting in the healing of chronic and complex burn wounds. INTERNATIONAL JOURNAL OF BURNS AND TRAUMA 2020; 10:15-20. [PMID: 32211214 PMCID: PMC7076320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 02/13/2020] [Indexed: 06/10/2023]
Abstract
Different approaches can be used to repair extensive burn injury and chronic wounds, including full and split thickness skin grafts, temporising matrices and scaffolds, and composite cultured skin products. The use of non-cultured or autologous skin cells suspension in chronic burn is well established, but despite this no significant literature has been realized. The Rigenera micrografting technology is an innovative technique allowing to obtain a suspension of autologous micrografts that can be applied over the wounds in a combined methodology specifically developed and based on the both injections of the wound edges and spraying over the wound bed of this suspension. A black male patient with open wounds on the back already treated with a traditional split skin graft, present a 10% of wounds not healing. Then, the patient was treated with micrografts suspension obtained by mechanical disaggregation of small split skin biopsies using the Rigeneracons medical device. Micrografts were directly injected and sprayed in the wounds. The combination of injection and sprayed micrografts solution over the wounds achieved full closure over 10% over a period of 6 months. The follow up more than 2 years showed stable wounds with no breakdown in the epidermis. The final cosmetic and functional results obtained with micrografting on chronic burn wounds is a valid alternative when all the other options cannot provide wound closure.
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Affiliation(s)
| | - Daan de Hollander
- University of Kwa Zulu Natal, Nelson Mandela Medical SchoolDurban, South Africa
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Trovato L, Astarita C, Graziano A. Comment on the article by Dr. Toshima about alopecia areata multiplex following autologous dermal micrograft injection. J Eur Acad Dermatol Venereol 2020; 34:e219-e221. [DOI: 10.1111/jdv.16176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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