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Arai K, Yoshida S, Furuichi E, Iwanaga S, Mir TA, Yoshida T. Transplanted artificial amnion membrane enhanced wound healing in third-degree burn injury diabetic mouse model. Regen Ther 2024; 27:170-180. [PMID: 38571890 PMCID: PMC10987674 DOI: 10.1016/j.reth.2024.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/29/2024] [Accepted: 03/15/2024] [Indexed: 04/05/2024] Open
Abstract
Introduction Wound healing is severely compromised in patients with diabetes owing to factors such poor blood circulation, delayed immune response, elevated blood sugar levels, and neuropathy. Although the development of new wound healing products and prevention of serious complications such as infections in wounds have received substantial interest, wound healing remains a challenge in regenerative medicine. Burn wounds, especially third-degree burns, are difficult to treat because they are associated with immune and inflammatory reactions and distributive shock. Wound care and treatment that protects the burn site from infection and allows wound healing can be achieved with bioengineered wound dressings. However, few studies have reported effective dressings for third-degree burn wounds, making it important to develop new dressing materials. Methods In this study, we developed an artificial amniotic membrane (AM) using epithelial and mesenchymal cells derived from human amnion as a novel dressing material. The artificial AM was applied to the wound of a diabetic third-degree burn model and its wound healing ability was evaluated. Results This artificial amnion produced multiple growth factors associated with angiogenesis, fibroblast proliferation, and anti-inflammation. In addition, angiogenesis and granulation tissue formation were promoted in the artificial AM-treated mouse group compared with the control group. Furthermore, the inflammatory phase was prolonged in the control group. Conclusions Our preliminary results indicate that the artificial AM might be useful as a new dressing for refractory ulcers and third-degree burns. This artificial AM-based material represents great potential for downstream clinical research and treatment of diabetes patients with third-degree burns.
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Affiliation(s)
- Kenichi Arai
- Department of Clinical Biomaterial Applied Science, Faculty of Medicine, University of Toyama, Toyama, Japan
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Satoshi Yoshida
- Department of Medical Oncology, Toyama University Hospital, Toyama, Japan
| | - Etsuko Furuichi
- Department of Clinical Biomaterial Applied Science, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Shintaroh Iwanaga
- Division of Biomedical System Engineering, Graduate School of Science and Engineering, University of Toyama, Toyama, Japan
| | - Tanveer Ahmad Mir
- Tissue/Organ Bioengineering and BioMEMS Lab, Organ Transplant Centre of Excellence (TR&I Dpt), King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia
| | - Toshiko Yoshida
- Department of Clinical Biomaterial Applied Science, Faculty of Medicine, University of Toyama, Toyama, Japan
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Hofmann N, Rennekampff HO, Salz AK, Börgel M. Preparation of human amniotic membrane for transplantation in different application areas. FRONTIERS IN TRANSPLANTATION 2023; 2:1152068. [PMID: 38993896 PMCID: PMC11235369 DOI: 10.3389/frtra.2023.1152068] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 04/20/2023] [Indexed: 07/13/2024]
Abstract
The human amniotic membrane (hAM) is the inner layer of the placenta and plays protective and nutritional roles for the fetus during pregnancy. It contains multiple growth factors and proteins that mediate unique regenerative properties and enhance wound healing in tissue regeneration. Due to these characteristics hAM has been successfully utilized in ophthalmology for many decades. This material has also found application in a variety of additional therapeutic areas. Particularly noteworthy are the extraordinary effects in the healing of chronic wounds and in the treatment of burns. But hAM has also been used successfully in gynecology, oral medicine, and plastic surgery and as a scaffold for in vitro cell culture approaches. This review aims to summarize the different graft preparation, preservation and storage techniques that are used and to present advantages and disadvantages of these methods. It shows the characteristics of the hAM according to the processing and storage methods used. The paper provides an overview of the currently mainly used application areas and raises new application possibilities. In addition, further preparation types like extracts, homogenates, and the resulting treatment alternatives are described.
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Affiliation(s)
- Nicola Hofmann
- German Society for Tissue Transplantation (DGFG) gGmbH, Hannover, Germany
| | - Hans-Oliver Rennekampff
- Klinik für Plastische Chirurgie, Hand- und Verbrennungschirurgie, Rhein-Maas Klinikum GmbH, Würselen, Germany
| | | | - Martin Börgel
- German Society for Tissue Transplantation (DGFG) gGmbH, Hannover, Germany
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Amano K, Okabe M, Yoshida T, Oba J, Yoshida S, Wakasugi M, Usui A, Nakata Y, Okudera H. Hyperdry Human Amniotic Membrane as a Protective Dressing for Open Wounds With Exposed Bowel in Mice. J Surg Res 2023; 283:898-913. [PMID: 36915018 DOI: 10.1016/j.jss.2022.09.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/28/2022] [Accepted: 09/15/2022] [Indexed: 12/12/2022]
Abstract
INTRODUCTION An enteroatmospheric fistula forms when the exposed bowel is perforated with chronic enteric fistula formation. Currently, there is no established preventative method for this condition. Hyperdry (HD) amniotic membrane (AM) can promote early granulation tissue formation on the exposed viscera and is suitable for dressing intractable wounds as it possesses anti-inflammatory, antibacterial, and immunomodulatory properties. This study investigated whether HD-AM promotes early formation of blood vessel-containing granulation tissue for enteroatmospheric fistula treatment. METHODS An experimental animal model of an open wound with exposed bowel was developed. A 15 × 20 mm wound was prepared on the abdomen of Institute of Cancer Research mice, and the HD-AM was placed. The mice were assigned to one of the following groups: HD-AM group, in which the stromal layer of the HD-AM was placed in contact with the exposed bowel; HD-AM UD group, in which the epithelial layer of the HD-AM was placed in contact with the exposed bowel; and the HD-AM (-) or control group, in which the HD-AM was not used. RESULTS On postoperative days 7 and 14, granulation tissue thickness significantly increased in the HD-AM and HD-AM UD groups compared with that in the HD-AM (-) group. Macrophages accumulated in the HD-AM epithelium only in the HD-AM group. During HD-AM contact, a subset of invading macrophages switched from M1 to M2 phenotype. CONCLUSIONS HD-AM is a practical wound dressing with its scaffolding function, regulation of TGF β-1 and C-X-C motif chemokine 5 (CXCL-5), and ability to induce M1-to-M2 macrophage conversion.
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Affiliation(s)
- Koji Amano
- Department of Emergency Surgery, Sakai City Medical Center, Sakai, Osaka, Japan
| | - Motonori Okabe
- Department of Regenerative Medicine, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Toyama, Japan
| | - Toshiko Yoshida
- Department of Clinical Biomaterial Application, Medical, University of Toyama, Toyama, Japan.
| | - Jiro Oba
- Department of Emergency & Disaster Medicine, Juntendo University School of Medicine/Graduate School of Medicine, Tokyo, Japan
| | - Satoshi Yoshida
- Department of Regenerative Medicine, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Toyama, Japan
| | - Masahiro Wakasugi
- Department of Emergency and Disaster Medicine, University of Toyama, Toyama, Toyama, Japan
| | - Akihiro Usui
- Department of Emergency Surgery, Sakai City Medical Center, Sakai, Osaka, Japan
| | - Yasuki Nakata
- Department of Emergency Surgery, Sakai City Medical Center, Sakai, Osaka, Japan
| | - Hiroshi Okudera
- Department of Emergency and Disaster Medicine, University of Toyama, Toyama, Toyama, Japan
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Sabol TJ, Tran GS, Matuszewski J, Weston WW. Standardized reporting of amnion and amnion/chorion allograft data for wound care. Health Sci Rep 2022; 5:e794. [PMID: 36032519 PMCID: PMC9399452 DOI: 10.1002/hsr2.794] [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: 04/07/2022] [Revised: 07/14/2022] [Accepted: 08/01/2022] [Indexed: 11/22/2022] Open
Abstract
Background The favorable biological and mechanical properties of the most common components of the placenta, the amnion and chorion, have been explored for regenerative medical indications. The use of the combination of amnion and chorion has also become very popular. But, published data from placental tissues in their final, useable form is lacking. During treatment with membrane product, the tissue is usually sterile, intact and laid on a wound or treatment area. The factors available to the treatment area from the applied product need to be elucidated and presented in a relatable form. Current reporting for eluted growth factor results are typically expressed per milliliter, which is not informative with respect to the area of tissue covered by the actual membrane and may differ among techniques. Methods To address this inconsistency, amnion or amnion/chorion were isolated from human placentas and processed by a proprietary procedure. The final dry, sterilized product was evaluated for structural components and growth factor elution. Growth factors were quantified by multiplex panels and ELISAs and the values normalized to specific area and elution volume of finished product. This information allows extrapolation to all membrane sizes and affords cross‐study comparisons. Results Analysis of membrane supernatants show that dehydrated, sterilized amnion and amnion/chorion elute factors that are conducive to wound healing, which are available to recipient tissues. Importantly, these measurable factors eluted from dehydrated, sterilized membranes can be reported as a function of available factors per square centimeter of tissue. Conclusions The standardized characterization of dehydrated, sterilized amnion and amnion/chorion as delivered to recipient tissues permits understanding and comparison of the products across various graft sizes, types, and eluate volumes. Further, reporting this data as a function of cm2 of dehydrated tissue allows extrapolation by independent scientists and clinicians.
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van de Vyver M, Idensohn PJ, Niesler CU. A regenerative approach to the pharmacological management of hard-to-heal wounds. Biochimie 2022; 194:67-78. [PMID: 34982983 DOI: 10.1016/j.biochi.2021.12.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/27/2021] [Accepted: 12/29/2021] [Indexed: 12/12/2022]
Abstract
A wound is considered hard-to-heal when, despite the appropriate clinical analysis and intervention, the wound area reduces by less than a third at four weeks and complete healing fails to occur within 12 weeks. The most prevalent hard-to-heal wounds are associated with underlying metabolic diseases or vascular insufficiency and include arterial, venous, pressure and diabetic foot ulcers. Their common features include an abnormal immune response and extended inflammatory phase, a subdued proliferation phase due to cellular insufficiencies and finally an almost non-existent remodeling phase. Advances in wound care technology, tested in both pre-clinical models and clinical trials, have paved the way for improved treatment options, focused on regeneration. These interventions have been shown to limit the extent of ongoing inflammatory damage, decrease bacterial load, promote angiogenesis and deposition of granulation tissue, and stimulate keratinocyte migration thereby promoting re-epithelialization in these wounds. The current review discusses these hard-to-heal wounds in the context of their underlying pathology and potential of advanced treatment options, which if applied promptly as a standard of care, could reduce morbidity, promote quality of life, and alleviate the burden on a strained health system.
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Affiliation(s)
- M van de Vyver
- Division of Clinical Pharmacology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa.
| | - P J Idensohn
- CliniCare Medical Centre, Ballito, KwaZulu-Natal, South Africa; School of Nursing, Faculty of Health Sciences, University of the Free State, Bloemfontein, South Africa
| | - C U Niesler
- Discipline of Biochemistry, School of Life Sciences, University of KwaZulu Natal, Scottsville, South Africa
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Babaki D, Khoshsimaybargard M, Yaghoubi S, Gholami M. Comparison of Vestibular Depth Relapse and Wound Healing After Reconstructive Preprosthetic Surgery Using Cryopreserved Amniotic Membrane and Acellular Dermal Matrix - A Comparative Study. Ann Maxillofac Surg 2021; 11:12-16. [PMID: 34522647 PMCID: PMC8407648 DOI: 10.4103/ams.ams_322_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 03/18/2021] [Accepted: 03/25/2021] [Indexed: 11/25/2022] Open
Abstract
Introduction: The significance of membranes as wound dressing in oral surgeries has been reported by previous studies. The aim of the present split-mouth randomized clinical study was to assess and compare the wound dressing properties of acellular dermal matrix (ADM) and cryopreserved human amniotic membrane (AM) after reconstructive preprosthetic oral surgery. Materials and Methods: Twenty-eight patients with complete mandibular edentulism and resorbed alveolar bone were included. After taking mandibular impression, a clear acrylic splint with increased labial flange height was created. In each participant, labial vestibular depth was elevated using the Clark's technique. Subsequently, half of the exposed periosteum was covered with ADM while the other half was covered with cryopreserved human AM. Vestibule depth and relapse in the two sides were measured immediately after vestibuloplasty and at the end of the 1st week, 2nd week, 1st month, and 3rd months with graduations of 0.1 mm. Furthermore, after 3 and 7 days, samples were collected from graft material, and the macrophage population was analyzed by flow cytometry. Results: There was no significant difference in the relapse of vestibule depth between the two grafts at different time intervals. However, the frequency of wound-infiltrating macrophages (CD68+ cells) was significantly higher in areas covered by ADM after 3 and 7 days. Discussion: ADM is as effective as cryopreserved AM in terms of maintaining the postoperative vestibular depth. On the other hand, our results suggested that the onset of healing phase in ADM-covered areas occurs faster compared to the periosteum covered with cryopreserved human AM. This clinical trial showed significantly faster postoperative healing onset when ADM was used than when cryopreserved human AM was applied on the periosteum.
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Affiliation(s)
- Danial Babaki
- Department of Biomedical Engineering, Tagliatela College of Engineering, University of New Haven, CT, USA
| | | | - Sanam Yaghoubi
- Genetics Department, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Mahdi Gholami
- Department of Oral and Maxillofacial Surgery, Mashhad University of Medical Sciences, Mashhad, Iran.,Oral and Maxillofacial Diseases Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Moraes JTGDO, Costa MM, Alves PCS, Sant'Anna LB. Effects of Preservation Methods in the Composition of the Placental and Reflected Regions of the Human Amniotic Membrane. Cells Tissues Organs 2021; 210:66-76. [PMID: 34010831 DOI: 10.1159/000515448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 02/20/2021] [Indexed: 11/19/2022] Open
Abstract
The human amniotic membrane (AM) is emerging as an interesting biomaterial for regenerative medicine due to its biological and mechanical proprieties. The beneficial effects of the AM are probably related to its bioactive factors produced by local cells and stored in the stromal matrix. However, the search for a preservation method capable of preserving AM properties remains a challenge. The aim of this study was to evaluate important features of 2 anatomical regions of the human AM (reflected and placental amnion) after different preservation methods. For this purpose, human placentas were harvested and processed for AM isolation and storage at 2 different conditions: room temperature for 18 h in DMEM (fresh AM) and -80°C in DMEM/glycerol solution for 30 days (cryopreserved AM). After the storage period, the structural integrity of the membrane was assessed by histological and Picrosirius polarization analysis, cellular viability analysis was performed using the MTT assay, and the soluble proteins were quantified with the Qubit Protein Assay Kit. Both preservation protocols reduced the cell viability, mainly in the placental amnion region of the AM, but preserved the morphology of epithelial and stromal layers, as well as the organization and distribution of collagen fibers. There was a reduction in soluble proteins only in fresh AM. Importantly, the cryopreserved AM group presented the same concentration as the control group. In conclusion, the cryopreservation using DMEM/glycerol was ideal for preserving the structural integrity and soluble protein content, indicating the feasibility of this method in preserving AM for its use in regenerative medicine.
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Affiliation(s)
- Jéssica Tereza Guedes de Oliveira Moraes
- Laboratory of Histology and Regenerative Therapy, Institute of Research and Development (IPD), University of Vale do Paraíba (UNIVAP), São José dos Campos, Brazil
| | - Maíra Maftoum Costa
- Laboratory of Histology and Regenerative Therapy, Institute of Research and Development (IPD), University of Vale do Paraíba (UNIVAP), São José dos Campos, Brazil
| | - Paula Cristina Santos Alves
- Laboratory of Histology and Regenerative Therapy, Institute of Research and Development (IPD), University of Vale do Paraíba (UNIVAP), São José dos Campos, Brazil
| | - Luciana Barros Sant'Anna
- Laboratory of Histology and Regenerative Therapy, Institute of Research and Development (IPD), University of Vale do Paraíba (UNIVAP), São José dos Campos, Brazil
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Capistrano da Silva E, Gibson DJ, Jeong S, Zimmerman KL, Smith-Fleming KM, Martins BDC. Determining MMP-2 and MMP-9 reductive activities of bovine and equine amniotic membranes homogenates using fluorescence resonance energy transfer. Vet Ophthalmol 2021; 24:279-287. [PMID: 33834598 DOI: 10.1111/vop.12888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/26/2021] [Accepted: 03/28/2021] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Matrix metalloproteinases (MMPs)-2 and -9 are present in corneal ulcers, and an imbalance between MMPs and tissue inhibitors of metalloproteinases (TIMPs) leads to further corneal degradation. Amniotic membrane homogenate (AMH) has proteolytic properties beneficial for corneal healing, but it is unknown whether AMH possesses TIMPs or effectively inhibits MMP-2 and MMP-9 activity. OBJECTIVE To determine if bovine and equine AMH reduce in vitro MMP-2 and MMP-9 activities associated with the presence of TIMPs. PROCEDURES Undiluted and diluted twofold series (0-fold to 16-fold dilutions) of equine amniotic membrane homogenates (EAMH, n = 8) and bovine amniotic membrane homogenates (BAMH, n = 8) were subjected to fluorescence resonance energy transfer, and the fluorescence emitted was recorded over time. Average fluorescence was calculated versus recombinant concentration. Enzyme-linked immunosorbent assays for TIMPs 1-4 were applied to quantify TIMPs in the samples. RESULTS AMH from both species were able to inhibit MMP-2 and MMP-9 activities in vitro, and the inhibition efficacy decreased gradually with dilution. BAMH was significantly more effective than EAMH at inhibiting MMP-2 and MMP-9 in vitro. TIMPs -2 and -3 were present in EAMH and BAMH. TIMP-1 was detected only in BAMH, and TIMP-4 was not detected in any samples. CONCLUSION Both EAMH and BAMH directly inhibited MMP-2 and MMP-9 in vitro without dilution, and BAMH showed better inhibition of MMP-2 and MMP-9 before and after dilution compared to EAMH.
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Affiliation(s)
- Erotides Capistrano da Silva
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Daniel J Gibson
- Department of Obstetrics and Gynecology, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Sunyoung Jeong
- Department of Obstetrics and Gynecology, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Kelli L Zimmerman
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Kathryn M Smith-Fleming
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Bianca da C Martins
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA
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Davis KE, Killeen AL, Farrar D, Raspovic KM, Berriman-Rozen ZD, Malone M, Lavery LA. Lyopreserved amniotic membrane is cellularly and clinically similar to cryopreserved construct for treating foot ulcers. Int Wound J 2020; 17:1893-1901. [PMID: 32820605 PMCID: PMC7754413 DOI: 10.1111/iwj.13479] [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: 06/17/2020] [Revised: 07/22/2020] [Accepted: 07/28/2020] [Indexed: 12/20/2022] Open
Abstract
We compared cellular viability between cryopreserved and lyopreserved amniotic membranes and clinical outcomes of the lyopreserved construct in a prospective cohort study of 40 patients with neuropathic foot ulcers. Patients received weekly application of lyopreserved membrane for 12 weeks with standard weekly debridement and offloading. We evaluated the proportion of foot ulcers that closed, time to closure, closure trajectories, and infection during therapy. We used chi-square tests for dichotomous variables and independent t-tests for continuous variables with an alpha of α = .10. Cellular viability was equivalent between cryo- and lyopreserved amniotic tissues. Clinically, 48% of subjects' wounds closed in an average of 40.0 days. Those that did not close were older (63 vs 59 years, P = .011) and larger ulcers at baseline (7.8 vs 1.6 cm2 , P = .012). Significantly more patients who achieved closure reached a 50% wound area reduction in 4 weeks compared with non-closed wounds (73.7% vs 47.6%, P = .093). There was no difference in the slope of the wound closure trajectories between closed and non-closed wounds (0.124 and 0.159, P = .85), indicating the rate of closure was similar. The rate of closure was 0.60 mm/day (SD = 0.47) for wounds that closed and 0.50 mm/day (SD = 0.58) for wounds that did not close (P = .89).
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Affiliation(s)
- Kathryn E Davis
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Amanda L Killeen
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - David Farrar
- Department of Immunology and Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Katherine M Raspovic
- Department of Orthopedic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Zachary D Berriman-Rozen
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Matthew Malone
- South West Sydney Limb Preservation and Wound Research Academic Unit, South Western Sydney LHD, Sydney, New South Wales, Australia
| | - Lawrence A Lavery
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Oba J, Okabe M, Yoshida T, Soko C, Fathy M, Amano K, Kobashi D, Wakasugi M, Okudera H. Hyperdry human amniotic membrane application as a wound dressing for a full-thickness skin excision after a third-degree burn injury. BURNS & TRAUMA 2020; 8:tkaa014. [PMID: 32733973 PMCID: PMC7382972 DOI: 10.1093/burnst/tkaa014] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/08/2020] [Indexed: 12/18/2022]
Abstract
Background Severe burn injuries create large skin defects that render the host susceptible to bacterial infections. Burn wound infection often causes systemic sepsis and severe septicemia, resulting in an increase in the mortality of patients with severe burn injuries. Therefore, appropriate wound care is important to prevent infection and improve patient outcomes. However, it is difficult to heal a third-degree burn injury. The aim of this study was to investigate whether hyperdry human amniotic membrane (HD-AM) could promote early granulation tissue formation after full-thickness skin excision in third-degree burn injury sites in mice. Methods After the development of HD-AM and creation of a third-degree burn injury model, the HD-AM was either placed or not placed on the wound area in the HD-AM group or HD-AM group, respectively. The groups were prepared for evaluation on postoperative days 1, 4 and 7. Azan staining was used for granulation tissue evaluation, and estimation of CD163, transforming growth factor beta-1 (TGF-β1), vascular endothelial growth factor (VEGF), CD31, alpha-smooth muscle actin (α-SMA) and Iba1 expression was performed by immunohistochemical staining. Quantitative reverse-transcription polymerase chain reaction (PCR) was used to investigate gene expression of growth factors, cell migration chemokines and angiogenic and inflammatory markers. Results The HD-AM group showed significant early and qualitatively good growth of granulation tissue on the full-thickness skin excision site. HD-AM promoted early-phase inflammatory cell infiltration, fibroblast migration and angiogenesis in the granulation tissue. Additionally, the early infiltration of cells of the immune system was observed. Conclusions HD-AM may be useful as a new wound dressing material for full-thickness skin excision sites after third-degree burn injuries, and may be a new therapeutic technique for improving the survival rate of patients with severe burn injuries.
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Affiliation(s)
- Jiro Oba
- Department of Emergency and Disaster Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Motonori Okabe
- Department of Regenerative Medicine, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Toshiko Yoshida
- Department of Regenerative Medicine, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Chika Soko
- Department of Regenerative Medicine, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Moustafa Fathy
- Department of Regenerative Medicine, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan.,Department of Biochemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Koji Amano
- Department of Emergency Surgery, Sakai City Medical Center, Sakai, Osaka 594-8304, Japan
| | - Daisuke Kobashi
- Department of Emergency and Disaster Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Masahiro Wakasugi
- Department of Emergency and Disaster Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Hiroshi Okudera
- Department of Emergency and Disaster Medicine, University of Toyama, Toyama 930-0194, Japan
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12
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Repeated Freezing Procedures Preserve Structural and Functional Properties of Amniotic Membrane for Application in Ophthalmology. Int J Mol Sci 2020; 21:ijms21114029. [PMID: 32512889 PMCID: PMC7312941 DOI: 10.3390/ijms21114029] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/29/2020] [Accepted: 06/03/2020] [Indexed: 02/06/2023] Open
Abstract
For decades, the unique regenerative properties of the human amniotic membrane (hAM) have been successfully utilized in ophthalmology. As a directly applied biomaterial, the hAM should be available in a ready to use manner in clinical settings. However, an extended period of time is obligatory for performing quality and safety tests. Hence, the low temperature storage of the hAM is a virtually inevitable step in the chain from donor retrieval to patient application. At the same time, the impact of subzero temperatures carries an increased risk of irreversible alterations of the structure and composition of biological objects. In the present study, we performed a comprehensive analysis of the hAM as a medicinal product; this is intended for a novel strategy of application in ophthalmology requiring a GMP production protocol including double freezing–thawing cycles. We compared clinically relevant parameters, such as levels of growth factors and extracellular matrix proteins content, morphology, ultrastructure and mechanical properties, before and after one and two freezing cycles. It was found that epidermal growth factor (EGF), transforming growth factor beta 1 (TGF-β1), hepatocyte growth factor (HGF), basic fibroblast growth factor (bFGF), hyaluronic acid, and laminin could be detected in all studied conditions without significant differences. Additionally, histological and ultrastructure analysis, as well as transparency and mechanical tests, demonstrated that properties of the hAM required to support therapeutic efficacy in ophthalmology are not impaired by dual freezing.
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Canciello A, Teti G, Mazzotti E, Falconi M, Russo V, Giordano A, Barboni B. Progesterone Prolongs Viability and Anti-inflammatory Functions of Explanted Preterm Ovine Amniotic Membrane. Front Bioeng Biotechnol 2020; 8:135. [PMID: 32258004 PMCID: PMC7089934 DOI: 10.3389/fbioe.2020.00135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 02/10/2020] [Indexed: 12/21/2022] Open
Abstract
Amniotic membrane (AM) is considered an important medical device with many applications in regenerative medicine. The therapeutic properties of AM are due to its resistant extracellular matrix and to the large number of bioactive molecules released by its cells. An important goal that still remains to be achieved is the identification of cultural and preservation protocols able to maintain in time the membrane morphology and the biological properties of its cells. Recently, our research group demonstrated that progesterone (P4) is crucial in preventing the loss of the epithelial phenotype of amniotic epithelial cells in vitro. Followed by this premise, it has been evaluated whether P4 may also affect AM properties in a short-term culture. Results confirm that P4 preserves AM integrity and architecture with respect to untreated AM, which showed alterations in morphology. Transmission electron microscopy (TEM) analyses demonstrate that P4 also maintains unaltered cell-cell junctions, nuclear status, and intracellular organelles. On the contrary, an untreated AM experienced an extensive cell death and a strong reduction of immunomodulatory properties, measured in terms of anti-inflammatory cytokine expression and secretion. Overall, these results could open to new strategies to ameliorate the protocols for cryopreservation and tissue culture, which represent preliminary stages of AM application in regenerative medicine.
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Affiliation(s)
- Angelo Canciello
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy.,Department of Biology, Sbarro Institute for Cancer Research and Molecular Medicine, Temple University, Philadelphia, PA, United States
| | - Gabriella Teti
- Department for Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Eleonora Mazzotti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Mirella Falconi
- Department for Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Valentina Russo
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Antonio Giordano
- Department of Biology, Sbarro Institute for Cancer Research and Molecular Medicine, Temple University, Philadelphia, PA, United States.,Department of Medical Biotechnology, University of Siena, Siena, Italy
| | - Barbara Barboni
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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14
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Dhall S, Sathyamoorthy M, Kuang JQ, Hoffman T, Moorman M, Lerch A, Jacob V, Sinclair SM, Danilkovitch A. Properties of viable lyopreserved amnion are equivalent to viable cryopreserved amnion with the convenience of ambient storage. PLoS One 2018; 13:e0204060. [PMID: 30278042 PMCID: PMC6168127 DOI: 10.1371/journal.pone.0204060] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/31/2018] [Indexed: 12/29/2022] Open
Abstract
Human amniotic membrane (AM) has a long history of clinical use for wound treatment. AM serves as a wound protective barrier maintaining proper moisture. AM is anti-inflammatory, anti-microbial and antifibrotic, and supports angiogenesis, granulation tissue formation and wound re-epithelialization. These properties of AM are attributed to its native extracellular matrix, growth factors, and endogenous cells including mesenchymal stem cells. Advances in tissue preservation have helped to overcome the short shelf life of fresh AM and led to the development of AM products for clinical use. Viable cryopreserved amnion (VCAM), which retains all native components of fresh AM, has shown positive outcomes in clinical trials for wound management. However, cryopreservation requires ultra-low temperature storage and shipment that limits widespread use of VCAM. We have developed a lyopreservation technique to allow for ambient storage of living tissues. Here, we compared the structural, molecular, and functional properties of a viable lyopreserved human amniotic membrane (VLAM) with properties of VCAM using in vitro and in vivo wound models. We found that the structure, growth factors, and cell viability of VLAM is similar to that of VCAM and fresh AM. Both, VCAM and VLAM inhibited TNF-α secretion and upregulated VEGF expression in vitro under conditions designed to mimic inflammation and hypoxia in a wound microenvironment, and resulted in wound closure in a diabetic mouse chronic wound model. Taken together, these data demonstrate that VLAM structural and functional properties are equivalent to VCAM but without the constraints of ultra-low temperature storage.
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Affiliation(s)
- Sandeep Dhall
- Osiris Therapeutics Inc., Columbia, MD, United States of America
- * E-mail:
| | | | - Jin-Qiang Kuang
- Osiris Therapeutics Inc., Columbia, MD, United States of America
| | - Tyler Hoffman
- Osiris Therapeutics Inc., Columbia, MD, United States of America
| | - Matthew Moorman
- Osiris Therapeutics Inc., Columbia, MD, United States of America
| | - Anne Lerch
- Osiris Therapeutics Inc., Columbia, MD, United States of America
| | - Vimal Jacob
- Osiris Therapeutics Inc., Columbia, MD, United States of America
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15
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Pogozhykh O, Prokopyuk V, Prokopyuk O, Kuleshova L, Goltsev A, Figueiredo C, Pogozhykh D. Towards biobanking technologies for natural and bioengineered multicellular placental constructs. Biomaterials 2018; 185:39-50. [PMID: 30218835 DOI: 10.1016/j.biomaterials.2018.08.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/20/2018] [Accepted: 08/27/2018] [Indexed: 12/13/2022]
Abstract
Clinical application of a large variety of biomaterials is limited by the imperfections in storage technology. Perspective approaches utilizing low-temperature storage are especially challenging for multicellular structures, such as tissues, organs, and bioengineered constructs. Placenta, as a temporary organ, is a widely available unique biological material, being among the most promising sources of various cells and tissues for clinical and experimental use in regenerative medicine and tissue engineering. The aim of this study was to analyse the mechanisms of cryoinjuries in different placental tissues and bioengineered constructs as well as to support the viability after low temperature storage, which would contribute to development of efficient biobanking technologies. This study shows that specificity of cryodamage depends on the structure of the studied object, intercellular bonds, as well as interaction of its components with cryoprotective agents. Remarkably, it was possible to efficiently isolate cells after thawing from all of the studied tissues. While the outcome was lower in comparison to the native non-frozen samples, the phenotype and expression levels of pluripotency genes remained unaffected. Further progress in eliminating of recrystallization processes during thawing would significantly improve biobanking technologies for multicellular constructs and tissues.
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Affiliation(s)
- Olena Pogozhykh
- Institute for Transfusion Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany; Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Pereyaslavskaya Str. 23, 61015 Kharkiv, Ukraine
| | - Volodymyr Prokopyuk
- Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Pereyaslavskaya Str. 23, 61015 Kharkiv, Ukraine
| | - Olga Prokopyuk
- Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Pereyaslavskaya Str. 23, 61015 Kharkiv, Ukraine
| | - Larisa Kuleshova
- Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Pereyaslavskaya Str. 23, 61015 Kharkiv, Ukraine
| | - Anatoliy Goltsev
- Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Pereyaslavskaya Str. 23, 61015 Kharkiv, Ukraine
| | - Constança Figueiredo
- Institute for Transfusion Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Denys Pogozhykh
- Institute for Transfusion Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany; Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Pereyaslavskaya Str. 23, 61015 Kharkiv, Ukraine.
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16
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Smeringaiova I, Nyc O, Trosan P, Spatenka J, Burkert J, Bednar J, Jirsova K. Antimicrobial efficiency and stability of two decontamination solutions. Cell Tissue Bank 2018; 19:581-589. [PMID: 30062597 DOI: 10.1007/s10561-018-9707-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 06/22/2018] [Indexed: 11/26/2022]
Abstract
Two decontamination solutions, commercially produced BASE•128 and laboratory decontamination solution (LDS), with analogous content of antibiotic and antimycotic agents, were compared in their antimicrobial efficiency and stability (pH and osmolarity). Both solutions were compared immediately after thawing aliquots frozen for 1, 3 or 6 months. Agar well diffusion method was used to test their antimicrobial efficiency against five human pathogens: Staphylococcus aureus, Pseudomonas aeruginosa, Proteus mirabilis, Escherichia coli and Enterococcus faecalis. The difference in the inhibition of growth between the two decontamination solutions was mostly not statistically significant, with few exceptions. The most pronounced difference between the LDS and BASE•128 was observed in their decontamination efficacy against E. coli and E. faecalis, where the LDS showed to be more efficient than BASE•128. The osmolarity value of LDS decreased with cold-storage, the osmolarity values of the BASE•128 could not be measured as they were below the range of the osmometer. Slight changes were found in pH of the less stable LDS solution, whose pH increased from initial value 7.36 ± 0.07 to 7.72 ± 0.19 after 6 m-storage. We verified that BASE•128 and LDS are similarly efficient in elimination of possible placental bacterial contaminants and may be used for decontamination of various tissues.
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Affiliation(s)
- Ingrida Smeringaiova
- Laboratory of the Biology and Pathology of the Eye, Department of Paediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Laboratory of the Biology and Pathology of the Eye, Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Department of Transplantation and Tissue Bank, Motol University Hospital, Prague, Czech Republic
| | - Otakar Nyc
- Department of Clinical Microbiology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Peter Trosan
- Laboratory of the Biology and Pathology of the Eye, Department of Paediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Laboratory of the Biology and Pathology of the Eye, Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Department of Transplantation and Tissue Bank, Motol University Hospital, Prague, Czech Republic
| | - Jaroslav Spatenka
- Department of Transplantation and Tissue Bank, Motol University Hospital, Prague, Czech Republic
| | - Jan Burkert
- Department of Transplantation and Tissue Bank, Motol University Hospital, Prague, Czech Republic
| | - Jan Bednar
- Laboratory of the Biology and Pathology of the Eye, Department of Paediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Laboratory of the Biology and Pathology of the Eye, Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Katerina Jirsova
- Laboratory of the Biology and Pathology of the Eye, Department of Paediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic.
- Laboratory of the Biology and Pathology of the Eye, Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic.
- Department of Transplantation and Tissue Bank, Motol University Hospital, Prague, Czech Republic.
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17
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Ang J, Liou CKD, Schneider HP. The Role of Placental Membrane Allografts in the Surgical Treatment of Tendinopathies. Clin Podiatr Med Surg 2018; 35:311-321. [PMID: 29861014 DOI: 10.1016/j.cpm.2018.02.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Placental membrane grafts have long been used in the realms of wound care and ophthalmology to assist in the healing cascade. Recently, surgeons have started to implant placental membrane grafts in a wide variety of foot and ankle surgeries to take advantage of their many touted benefits. The application of placental membrane grafts for cases of lower extremity tendinopathy is detailed in this article.
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Affiliation(s)
- Joel Ang
- Podiatric Medicine and Surgery, Department of Surgery, Cambridge Health Alliance, Harvard Medical School, 1493 Cambridge Street, Cambridge, MA 02139, USA.
| | - Chih-Kang David Liou
- Podiatric Medicine and Surgery, Department of Surgery, Cambridge Health Alliance, Harvard Medical School, 1493 Cambridge Street, Cambridge, MA 02139, USA
| | - Harry P Schneider
- Podiatric Medicine and Surgery, Department of Surgery, Cambridge Health Alliance, Harvard Medical School, 1493 Cambridge Street, Cambridge, MA 02139, USA
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18
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Cryopreservation of amniotic membrane with and without glycerol additive. Graefes Arch Clin Exp Ophthalmol 2018; 256:1117-1126. [DOI: 10.1007/s00417-018-3973-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 03/06/2018] [Accepted: 03/26/2018] [Indexed: 10/17/2022] Open
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19
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Gurruchaga H, Saenz Del Burgo L, Garate A, Delgado D, Sanchez P, Orive G, Ciriza J, Sanchez M, Pedraz JL. Cryopreservation of Human Mesenchymal Stem Cells in an Allogeneic Bioscaffold based on Platelet Rich Plasma and Synovial Fluid. Sci Rep 2017; 7:15733. [PMID: 29146943 PMCID: PMC5691190 DOI: 10.1038/s41598-017-16134-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 11/08/2017] [Indexed: 01/17/2023] Open
Abstract
Transplantation of mesenchymal stem cells (MSCs) has emerged as an alternative strategy to treat knee osteoarthritis. In this context, MSCs derived from synovial fluid could provide higher chondrogenic and cartilage regeneration, presenting synovial fluid as an appropriate MSCs source. An allogeneic and biomimetic bioscaffold composed of Platelet Rich Plasma and synovial fluid that preserve and mimics the natural environment of MSCs isolated from knee has also been developed. We have optimized the cryopreservation of knee-isolated MSCs embedded within the aforementioned biomimetic scaffold, in order to create a reserve of young autologous embedded knee MSCs for future clinical applications. We have tested several cryoprotectant solutions combining dimethyl sulfoxide (DMSO), sucrose and human serum and quantifying the viability and functionality of the embedded MSCs after thawing. MSCs embedded in bioscaffolds cryopreserved with DMSO 10% or the combination of DMSO 10% and Sucrose 0,2 M displayed the best cell viabilities maintaining the multilineage differentiation potential of MSCs after thawing. In conclusion, embedded young MSCs within allogeneic biomimetic bioscaffold can be cryopreserved with the cryoprotectant solutions described in this work, allowing their future clinical use in patients with cartilage defects.
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Affiliation(s)
- Haritz Gurruchaga
- NanoBioCel Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain.,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Vitoria-Gasteiz, Spain
| | - Laura Saenz Del Burgo
- NanoBioCel Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain.,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Vitoria-Gasteiz, Spain
| | - Ane Garate
- Advanced Biological Therapy Unit-UTBA, Hospital Vithas San Jose, C/Beato Tomás de Zumarraga 10, 01008, Vitoria-Gasteiz, Spain
| | - Diego Delgado
- Advanced Biological Therapy Unit-UTBA, Hospital Vithas San Jose, C/Beato Tomás de Zumarraga 10, 01008, Vitoria-Gasteiz, Spain
| | - Pello Sanchez
- Advanced Biological Therapy Unit-UTBA, Hospital Vithas San Jose, C/Beato Tomás de Zumarraga 10, 01008, Vitoria-Gasteiz, Spain
| | - Gorka Orive
- NanoBioCel Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain.,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Vitoria-Gasteiz, Spain
| | - Jesús Ciriza
- NanoBioCel Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain. .,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Vitoria-Gasteiz, Spain.
| | - Mikel Sanchez
- Arthroscopic Surgery Unit, Hospital Vithas San Jose, C/Beato Tomás de Zumarraga 10, 01008, Vitoria-Gasteiz, Spain
| | - Jose Luis Pedraz
- NanoBioCel Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain. .,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Vitoria-Gasteiz, Spain.
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20
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Taylor JP, Gearhart S. The use of viable cryopreserved placental tissue in the management of a chronic rectovaginal fistula. Ann R Coll Surg Engl 2017; 99:e236-e240. [PMID: 29046080 PMCID: PMC5696935 DOI: 10.1308/rcsann.2017.0157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2017] [Indexed: 12/12/2022] Open
Abstract
We present a case of a chronic recurrent rectovaginal fistula that initially arose from complications of haemorrhoid surgery and had failed multiple prior surgical repairs. The fistula was successfully managed using viable cryopreserved placental tissue.
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Affiliation(s)
- J P Taylor
- Department of General Surgery, Johns Hopkins Hospital , Baltimore, MD, USA
| | - S Gearhart
- Department of General Surgery, Johns Hopkins Hospital , Baltimore, MD, USA
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21
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Smeringaiova I, Trosan P, Mrstinova MB, Matecha J, Burkert J, Bednar J, Jirsova K. Comparison of impact of two decontamination solutions on the viability of the cells in human amnion. Cell Tissue Bank 2017; 18:413-423. [PMID: 28677080 DOI: 10.1007/s10561-017-9636-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 06/06/2017] [Indexed: 11/26/2022]
Abstract
Human amniotic membrane (HAM) is used as an allograft in regenerative medicine or as a source of pluripotent cells for stem cell research. Various decontamination protocols and solutions are used to sterilize HAM before its application, but little is known about the toxicity of disinfectants on HAM cells. In this study, we tested two decontamination solutions, commercial (BASE·128) and laboratory decontamination solution (LDS), with an analogous content of antimycotic/antibiotics for their cytotoxic effect on HAM epithelial (EC) and mesenchymal stromal cells (MSC). HAM was processed in a standard way, placed on nitrocellulose scaffold, and decontaminated, following three protocols: (1) 6 h, 37 °C; (2) 24 h, room temperature; (3) 24 h, 4 °C. The viability of EC was assessed via trypan blue staining. The apoptotic cells were detected using terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL). The mean % (±SD) of dead EC (%DEC) from six fresh placentas was 12.9 ± 18.1. Decontamination increased %DEC compared to culture medium. Decontamination with BASE·128 for 6 h, 37 °C led to the highest EC viability (81.7%). Treatment with LDS at 24 h, 4 °C resulted in the lowest EC viability (55.9%) in the set. MSC were more affected by apoptosis than EC. Although the BASE·128 expresses lower toxicity compared to LDS, we present LDS as an alternative decontamination solution with a satisfactory preservation of cell viability. The basic formula of LDS will be optimised by enrichment with nutrient components, such as glucose or vitamins, to improve cell viability.
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Affiliation(s)
- Ingrida Smeringaiova
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Ke Karlovu 2, 128 08, Prague, Czech Republic
| | - Peter Trosan
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Ke Karlovu 2, 128 08, Prague, Czech Republic
| | - Miluse Berka Mrstinova
- Department of Obstetrics and Gynaecology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jan Matecha
- Department of Obstetrics and Gynaecology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jan Burkert
- Department of Transplantation and Tissue Bank, Motol University Hospital, Prague, Czech Republic
| | - Jan Bednar
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Ke Karlovu 2, 128 08, Prague, Czech Republic
| | - Katerina Jirsova
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Ke Karlovu 2, 128 08, Prague, Czech Republic.
- Department of Transplantation and Tissue Bank, Motol University Hospital, Prague, Czech Republic.
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22
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McQuilling JP, Vines JB, Mowry KC. In vitro assessment of a novel, hypothermically stored amniotic membrane for use in a chronic wound environment. Int Wound J 2017; 14:993-1005. [PMID: 28370981 PMCID: PMC7949938 DOI: 10.1111/iwj.12748] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 03/03/2017] [Accepted: 03/04/2017] [Indexed: 12/18/2022] Open
Abstract
Chronic wounds require extensive healing time and place patients at risk of infection and amputation. Recently, a fresh hypothermically stored amniotic membrane (HSAM) was developed and has subsequently shown promise in its ability to effectively heal chronic wounds. The purpose of this study is to investigate the mechanisms of action that contribute to wound-healing responses observed with HSAM. A proteomic analysis was conducted on HSAM, measuring 25 growth factors specific to wound healing within the grafts. The rate of release of these cytokines from HSAMs was also measured. To model the effect of these cytokines and their role in wound healing, proliferation and migration assays with human fibroblasts and keratinocytes were conducted, along with tube formation assays measuring angiogenesis using media conditioned from HSAM. Additionally, the cell-matrix interactions between fibroblasts and HSAM were investigated. Conditioned media from HSAM significantly increased both fibroblast and keratinocyte proliferation and migration and induced more robust tube formation in angiogenesis assays. Fibroblasts cultured on HSAMs were found to migrate into and deposit matrix molecules within the HSAM graft. These collective results suggest that HSAM positively affects various critical pathways in chronic wound healing, lending further support to promising qualitative results seen clinically and providing further validation for ongoing clinical trials.
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Affiliation(s)
| | - Jeremy B Vines
- Research and Development, NuTech Medical, Birmingham, AL, USA
| | - Katie C Mowry
- Research and Development, NuTech Medical, Birmingham, AL, USA
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23
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The effect of cryopreservation on anti-cancer activity of human amniotic membrane. Cryobiology 2016; 74:61-67. [PMID: 27956223 DOI: 10.1016/j.cryobiol.2016.12.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 11/07/2016] [Accepted: 12/05/2016] [Indexed: 01/24/2023]
Abstract
Human amniotic membrane (AM) is an appropriate candidate for treatment of cancer due to special properties, such as inhibition of angiogenesis and secretion of pro-apoptotic factors. This research was designed to evaluate the impact of cryopreservation on cancer cell death induction and anti-angiogenic properties of the AM. Cancer cells were treated with fresh and cryopreserved amniotic condition medium during 24 h and cancer cell viability was determined by MTT assay. To evaluate angiogenesis, the rat aorta ring assay was performed for both fresh and cryopreserved AM within 7 days. In addition, four anti-angiogenic factors Tissue Inhibitor of Matrix Metalloproteinase-1 and 2 (TIMP-1 and TIMP-2), Thrombospondin, and Endostatin were measured by ELISA assay before and after cryopreservation. The results showed that the viability of cultured cancer cells dose-dependently decreased after treatment with condition medium of fresh and cryopreserved tissue and no significant difference was observed between the fresh and cryopreserved AM. The results revealed that the amniotic epithelial stem cells inhibit the penetration of fibroblast-like cells and angiogenesis. Moreover, the penetration of fibroblast-like cells in both epithelial and mesenchymal sides of fresh and cryopreserved AM was observed after removing of epithelial cells. The cryopreservation procedure significantly decreased anti-angiogenic factors TIMP-1, TIMP-2, Thrombospondin, and Endostatin which shows that angio-modulatory property is not fully dependent on proteomic and metabolomic profiles of the AM. These promising results demonstrate that cancer cell death induction and anti-angiogenic properties of the AM were maintained within cryopreservation; a procedure which can circumvent limitations of the fresh AM.
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