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Ingraldi AL, Audet RG, Tabor AJ. The Preparation and Clinical Efficacy of Amnion-Derived Membranes: A Review. J Funct Biomater 2023; 14:531. [PMID: 37888195 PMCID: PMC10607219 DOI: 10.3390/jfb14100531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/13/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023] Open
Abstract
Biological tissues from various anatomical sources have been utilized for tissue transplantation and have developed into an important source of extracellular scaffolding material for regenerative medicine applications. Tissue scaffolds ideally integrate with host tissue and provide a homeostatic environment for cellular infiltration, growth, differentiation, and tissue resolution. The human amniotic membrane is considered an important source of scaffolding material due to its 3D structural architecture and function and as a source of growth factors and cytokines. This tissue source has been widely studied and used in various areas of tissue repair including intraoral reconstruction, corneal repair, tendon repair, microvascular reconstruction, nerve procedures, burns, and chronic wound treatment. The production of amniotic membrane allografts has not been standardized, resulting in a wide array of amniotic membrane products, including single, dual, and tri-layered products, such as amnion, chorion, amnion-chorion, amnion-amnion, and amnion-chorion-amnion allografts. Since these allografts are not processed using the same methods, they do not necessarily produce the same clinical responses. The aim of this review is to highlight the properties of different human allograft membranes, present the different processing and preservation methods, and discuss their use in tissue engineering and regenerative applications.
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Affiliation(s)
- Alison L. Ingraldi
- Carmell Corporation, Pittsburg, PA 15203, USA;
- Department of Research and Development, Axolotl Biologix, Flagstaff, AZ 86001, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Robert G. Audet
- Carmell Corporation, Pittsburg, PA 15203, USA;
- Department of Research and Development, Axolotl Biologix, Flagstaff, AZ 86001, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Aaron J. Tabor
- Carmell Corporation, Pittsburg, PA 15203, USA;
- Department of Research and Development, Axolotl Biologix, Flagstaff, AZ 86001, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA
- Department of Clinical Operations, Axolotl Biologix, Flagstaff, AZ 86001, USA
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2
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Rezaei-Nejad A, Amirkhani MA, Ebrahimi A, Ghorani SM, Alamoutifard E, Nilforoushzadeh MA, Mollapour-Sisakht M. The Therapeutic Efficacy of Freeze-Dried Human Amniotic Membrane Allograft Gel for Diabetic Foot Ulcers: A Phase-1 Clinical Trial. INT J LOW EXTR WOUND 2023:15347346231204246. [PMID: 37828852 DOI: 10.1177/15347346231204246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Diabetic foot ulcers (DFUs) are classified as hard-to-heal wounds, which occur in approximately 15% of diabetic patients. Several interventions have shown efficacy in reducing the risk of amputation among patients with DFU, including timely diagnosis and management of infection and ischemia, debridement of necrotic tissues, reducing mechanical pressure on ulcers, and patient education. One major challenge in the management of DFUs is optimizing wound care to improve healing outcomes. Recently, interdisciplinary approaches proposed a new generation of wound dressing which increased efficacy and significantly decreased the healing time. The current study assessed the healing characteristics of chronic DFUs treated with lyophilized amniotic membrane gel (LAMG) in combination with standard care, versus a placebo hydrogel with standard care. In total, 18 patients (8 male, 10 female) were randomly assigned to the control group, which received standard care and a gelatin scaffold (placebo), or the intervention group, which received standard care along with LAMG. We evaluated the reduction in wound size and assessed the patient's health-related quality of life over 9 weeks. In the LAMG group (n = 9) and the Placebo group (n = 9), the wounds were reduced in size by a mean of 73.4% ± 15.3% and 13.1% ± 10.1%, respectively (P = .008). Patients treated with LAMG demonstrated significant improvements in the scores related to physical function, physical limitation, physical pain, general health, social function, emotional problems, and energy levels compared to the control group. The findings of this study indicate that using the LAMG with standard care significantly enhances wound healing.
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Affiliation(s)
- Aida Rezaei-Nejad
- Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Alireza Ebrahimi
- Foot and Ankle Research and Innovation Laboratory (FARIL), Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Emad Alamoutifard
- Department of Cardiothoracic Surgery, Mayo Clinic, Jacksonville, FL, USA
| | | | - Mahsa Mollapour-Sisakht
- Faculty of Pharmacy, Biotechnology Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Stem Cell and Regenerative Medicine Innovation Center, Tehran University of Medical Sciences, Tehran, Iran
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Yang J, Wang H, Zhou Y, Duan L, Schneider KH, Zheng Z, Han F, Wang X, Li G. Silk Fibroin/Wool Keratin Composite Scaffold with Hierarchical Fibrous and Porous Structure. Macromol Biosci 2023; 23:e2300105. [PMID: 37247409 DOI: 10.1002/mabi.202300105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/04/2023] [Indexed: 05/31/2023]
Abstract
The present study describes a silk microfiber reinforced meniscus scaffold (SMRMS) with hierarchical fibrous and porous structure made from silk fibroin (SF) and wool keratin (WK) using electrospinning and freeze-drying technology. This study focuses on the morphology, secondary structure, mechanical properties, and water absorption properties of the scaffold. The cytotoxicity and biocompatibility of SMRMS are assessed in vivo and in vitro. The scaffold shows hierarchical fibrous and porous structure, hierarchical pore size distribution (ranges from 50 to 650 µm), robust mechanical properties (compression strength can reach at 2.8 MPa), and stable biodegradability. A positive growth condition revealed by in vitro cytotoxicity testing indicates that the scaffold is not hazardous to cells. In vivo assessments of biocompatibility reveal that only a mild inflammatory reaction is present in implanted rat tissue. Meniscal scaffold made of SF/WK composite shows a potential application prospect in the meniscal repair engineering field with its development.
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Affiliation(s)
- Jie Yang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Huan Wang
- Orthopedic Institute, Department of Orthopaedic Surgery, The First Affiliated Hospital, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215006, China
| | - Yuhang Zhou
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Lirong Duan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Karl H Schneider
- Ludwig Boltzmann Institute for Cardiovascular Research at the Center for Biomedical Research, Medical University of Vienna, Waehringer Gurtel 18-20, Vienna, 1090, Austria
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Fengxuan Han
- Orthopedic Institute, Department of Orthopaedic Surgery, The First Affiliated Hospital, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215006, China
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Gang Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu, 215123, China
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Abstract
Thermal injuries may cause significant damage to large areas of the skin. Extensive and deep burn wounds require specialized therapy. The optimal method in the strategy of treating extensive, full thickness burns (III°) is the use of autologous split thickness skin grafts STSG (Busuioc et al. Rom J Morphol Embryol 4:1061-1067, 2012; Kitala D, Kawecki M, Klama-Baryła A, Łabuś W, Kraut M, Glik J, Ryszkiel I, Kawecki MP, Nowak M. Allogeneic vs. Autologous Skin Grafts in the Therapy of Patients with Burn Injuries: A Restrospective, Open-label Clinical Study with Pair Matching. Adv Clin Exp Med. 2016 Sep-Oct;25(5):923-929.; Glik J, Kawecki M, Kitala D, Klama-Baryła A, Łabuś W, Grabowski M, Durdzińska A, Nowak M, Misiuga M, Kasperczyk A. A new option for definitive burn wound closure - pair matching type of retrospective case-control study of hand burns in the hospitalized patients group in the Dr Stanislaw Sakiel Center for Burn Treatment between 2009 and 2015. Int Wound J. 2017 Feb 21. https://doi.org/10.1111/iwj.12720 . [Epub ahead of print]; Prim et al. May 24Wound Repair Regen., 2017; Grossova et al. Mar 31Ann Burns Fire Disasters 30:5-8, 2017). The main limitation of that method is the inadequate amount of healthy, undamaged skin (donor sites), which could be harvested and used as a graft. Moreover, donor sites are an additional wounds that require analgesic therapy, leave scars during the healing process and they are highly susceptible to infection (1-6). It must be emphasized that in terms of the treatment of severe, deep and extensive burns, and there should be no doubt that the search for a biocompatible skin substitute that would be able to replace autologous STSG is an absolute priority. The above-mentioned necessitates the search for new treatment methods of severe burn wounds. Such methods could consider the preparation and application of bioengineered, natural skin substitutes. At present, as the clinical standard considered by the physicians may be use of available biological skin substitutes, e.g., human allogeneic skin, in vitro cultured skin cells, acellular dermal matrix ADM and revitalized ADMs, etc. (Busuioc et al. Rom J Morphol Embryol 4:1061-1067, 2012; Kitala D, Kawecki M, Klama-Baryła A, Łabuś W, Kraut M, Glik J, Ryszkiel I, Kawecki MP, Nowak M. Allogeneic vs. Autologous Skin Grafts in the Therapy of Patients with Burn Injuries: A Restrospective, Open-label Clinical Study with Pair Matching. Adv Clin Exp Med. 2016 Sep-Oct;25(5):923-929.; Glik J, Kawecki M, Kitala D, Klama-Baryła A, Łabuś W, Grabowski M, Durdzińska A, Nowak M, Misiuga M, Kasperczyk A. A new option for definitive burn wound closure - pair matching type of retrospective case-control study of hand burns in the hospitalised patients group in the Dr Stanislaw Sakiel Center for Burn Treatment between 2009 and 2015. Int Wound J. 2017 Feb 21. https://doi.org/10.1111/iwj.12720 . [Epub ahead of print]; Prim et al. May 24Wound Repair Regen., 2017; Grossova et al. Mar 31Ann Burns Fire Disasters 30:5-8, 2017; Łabuś et al. FebJ Biomed Mater Res B Appl Biomater 106:726-733, 2018).
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Łabuś W, Kitala D, Klama-Baryła A, Szapski M, Kraut M, Smętek W, Glik J, Kucharzewski M, Rojczyk E, Utrata-Wesołek A, Trzebicka B, Szeluga U, Sobota M, Poloczek R, Kamiński A. Influence of electron beam irradiation on extracellular matrix of the human allogeneic skin grafts. J Biomed Mater Res B Appl Biomater 2021; 110:547-563. [PMID: 34478207 DOI: 10.1002/jbm.b.34934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/29/2021] [Accepted: 08/22/2021] [Indexed: 12/14/2022]
Abstract
The nonviable allogeneic human skin grafts might be considered as the most suitable skin substitutes in the treatment of extensive and deep burns. However, in accordance to biological security such grafts require the final sterilization prior to clinical application. The aim of the study was to verify the influence of electron beam irradiation of three selected doses: 18, 25, and 35 kGy on the extracellular matrix of human skin. Prior to sterilization, the microbiological tests were conducted and revealed contamination in all examined cases. Individual groups were subjected to single electron beam radiation sterilization at proposed doses and then subjected to microbiological tests again. The results of microbiological testing performed for all irradiation doses used were negative. Only in the control group was a growth of microorganisms observed. The FTIR spectrometry tests were conducted followed by the histological evaluation and mechanical tests. In addition, cost analysis of radiation sterilization of individual doses was performed. The results of spectroscopic analysis, mechanical tests, and histological staining showed no significant changes in composition and characteristics of tested tissues after their irradiation, in comparison to control samples. The cost analysis has shown that irradiation with 18 kGy is the most cost-effective and 35 kGy is the least favorable. However, according to biological risk reduction, the recommended sterilization dose is 35 kGy, despite the higher price compared to the other doses tested.
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Affiliation(s)
- Wojciech Łabuś
- Dr Stanisław Sakiel Center for Burns Treatment, Siemianowice Śląskie, Poland
| | - Diana Kitala
- Dr Stanisław Sakiel Center for Burns Treatment, Siemianowice Śląskie, Poland
| | | | - Michał Szapski
- Dr Stanisław Sakiel Center for Burns Treatment, Siemianowice Śląskie, Poland.,Gyncentrum, Laboratory of Molecular Biology and Virology, Katowice, Poland
| | - Małgorzata Kraut
- Dr Stanisław Sakiel Center for Burns Treatment, Siemianowice Śląskie, Poland
| | - Wojciech Smętek
- Dr Stanisław Sakiel Center for Burns Treatment, Siemianowice Śląskie, Poland.,Warsaw University of Technology, Warsaw, Poland
| | - Justyna Glik
- Dr Stanisław Sakiel Center for Burns Treatment, Siemianowice Śląskie, Poland.,Department of Chronic Wounds Healing Management Chronic Wound Care, School of Health Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Marek Kucharzewski
- Dr Stanisław Sakiel Center for Burns Treatment, Siemianowice Śląskie, Poland.,Department of Descriptive and Topographic Anatomy, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Zabrze, Poland
| | - Ewa Rojczyk
- Department of Descriptive and Topographic Anatomy, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Zabrze, Poland
| | | | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Urszula Szeluga
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Michał Sobota
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Ryszard Poloczek
- Laboratory for Microscopic Examination "Diagno-Med", Siemianowice Slaskie, Poland
| | - Artur Kamiński
- Department of Transplantology and Central Tissue Bank, Medical University of Warsaw, Warszawa, Poland.,National Centre for Tissue and Cell Banking, Warszawa, Poland
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Suroto H, Aryawan DM, Prakoeswa CA. The Influence of the Preservation Method and Gamma Irradiation Sterilization on TGF- β and bFGF Levels in Freeze-Dried Amnion Membrane (FD-AM) and Amnion Sponge. Int J Biomater 2021; 2021:6685225. [PMID: 33927767 DOI: 10.1155/2021/6685225] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/18/2021] [Accepted: 03/30/2021] [Indexed: 11/17/2022] Open
Abstract
Background Amnion grafts can be preserved as freeze-dried amnion membrane (FD-AM) and amnion sponge. Preserved grafts require to be sterilized by gamma irradiation. However, each step of the process could affect its biological properties. Even so, there are only a few studies that report the influence of the preservation method and gamma irradiation on growth factor levels in preserved amniotic grafts. Methods This was an in vitro experimental study with a pretest-posttest group design using a consecutive sampling technique in one batch of amnion donors at a particular time. The amnion was made into FD-AM and amnion sponge preparations, and they were sterilized with gamma irradiation (15 kGy and 25 kGy). Nonirradiated specimens served as controls, and 20 mg of each specimen was pulverized to evaluate the growth factors levels using ELISA. Results There were significant decreases in amnion sponge compared to the FD-AM, both in transforming growth factor beta (TGF-β) and basic fibroblast growth factor (bFGF) levels and in the preirradiated and 25 kGy postirradiated preparations (p ≤ 0.05). The growth factor levels in the preirradiated and postirradiated FD-AM (both 15 kGy and 25 kGy) showed significant differences (p ≤ 0.05). Likewise, the preirradiated amnion sponge group's growth factor levels compared with the postirradiated amnion sponge group also showed a significant decrease (p ≤ 0.05). Conclusion TGF-β and bFGF levels were lower in amnion sponge than FD-AM. The FD-AM and amnion sponge preparations' growth factors levels were reduced following gamma irradiation sterilization. Although the decrease in growth factor levels is significant, the number of growth factor levels is still sufficient for tissue healing.
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Gholipourmalekabadi M, Farhadihosseinabadi B, Faraji M, Nourani MR. How preparation and preservation procedures affect the properties of amniotic membrane? How safe are the procedures? Burns 2019; 46:1254-1271. [PMID: 31445711 DOI: 10.1016/j.burns.2019.07.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 05/14/2019] [Accepted: 07/03/2019] [Indexed: 12/22/2022]
Abstract
Human amniotic membrane (AM) has been widely used for tissue engineering and regenerative medicine applications. AM has many favorable characteristics such as high biocompatibility, antibacterial activity, anti-scarring property, immunomodulatory effects, anti-cancer behavior and contains several growth factors that make it an excellent natural candidate for wound healing. To date, various methods have been developed to prepare, preserve, cross-link and sterilize the AM. These methods remarkably affect the morphological, physico-chemical and biological properties of AM. Optimization of an effective and safe method for preparation and preservation of AM for a specific application is critical. In this review, the isolation, different methods of preparation, preservation, cross-linking and sterilization as well as their effects on properties of AM are well discussed. For each section, at least one effective and safe protocol is described in detail.
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Affiliation(s)
- Mazaher Gholipourmalekabadi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medicine Sciences, Tehran, Iran
| | - Behrouz Farhadihosseinabadi
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Faraji
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Nourani
- Chemical Injuries Research Center, Systems Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran; Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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Abstract
Under the auspices of the IAEA tissue banking programme on "Radiation Sterilisation of Tissue Graft" conducted from 1985 to 2004, many scientists and surgeons were involved in various regional research and development (R&D) projects mainly in dealing with radiation dose selection, radiation effects on human tissues and quality system in radiation sterilisation. New findings on radiation effects, tissue processing and preservation were shared during the regional and interregional meetings and workshops. Many tissue banks started to use radiation (25 kGy) to sterilize tissue grafts for tissue safety and efficacy and still continue to use it. The IAEA Code of Practice for Radiation Sterilization of Tissues Allografts developed in 2007 offered simpler methods to conduct radiation dose setting and dose validation experiments for tissue grafts. Advances in dose selection and dose mapping are continued under the quality management system when banks need to be certified to continue their operation. The combination of good tissue processing and preservation as well as good radiation practice will ensure the tissue products are properly sterilised thus safe and of high quality. Experience in meeting challenges in using radiation sterilisation and achievements reported by the tissue bankers are shared here.
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Affiliation(s)
- Norimah Yusof
- UMMC Bone Bank, National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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Kawecki M, Łabuś W, Klama-Baryla A, Kitala D, Kraut M, Glik J, Misiuga M, Nowak M, Bielecki T, Kasperczyk A. A review of decellurization methods caused by an urgent need for quality control of cell-free extracellular matrix' scaffolds and their role in regenerative medicine. J Biomed Mater Res B Appl Biomater 2017; 106:909-923. [DOI: 10.1002/jbm.b.33865] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 10/12/2016] [Accepted: 01/26/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Marek Kawecki
- Dr Stanislaw Sakiel Centre for Burns Treatment in Siemianowice Slaskie; Poland
- University of Technology and Humanities in Bielsko-Biała; Department of Health Science in Bielsko-Biała; Poland
| | - Wojciech Łabuś
- Dr Stanislaw Sakiel Centre for Burns Treatment in Siemianowice Slaskie; Poland
| | | | - Diana Kitala
- Dr Stanislaw Sakiel Centre for Burns Treatment in Siemianowice Slaskie; Poland
| | - Malgorzata Kraut
- Dr Stanislaw Sakiel Centre for Burns Treatment in Siemianowice Slaskie; Poland
| | - Justyna Glik
- Dr Stanislaw Sakiel Centre for Burns Treatment in Siemianowice Slaskie; Poland
- The Medical University of Silesia in Katowice; Unit for Chronic Wound Treatment Organization, Nursery Division; School of Healthcare in Zabrze Poland
| | - Marcelina Misiuga
- Dr Stanislaw Sakiel Centre for Burns Treatment in Siemianowice Slaskie; Poland
| | - Mariusz Nowak
- Dr Stanislaw Sakiel Centre for Burns Treatment in Siemianowice Slaskie; Poland
| | - Tomasz Bielecki
- Saint Barbara's Clinical Hospital number 5 in Sosnowiec; Clinical Department of Orthopaedics, Trauma; Oncologic and Reconstructive Surgery Poland
| | - Aleksandra Kasperczyk
- Medical University of Silesia in Katowice; Department of Biochemistry, School of Medicine with the Division of Dentistry in Zabrze
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10
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Kitala D, Klama-Baryła A, Kawecki M, Kraut M, Łabuś W, Glik J, Ples M, Tomanek E, Nowak M. Infections in the tissue material and their impact on the loss of transplants in the Laboratory of in vitro Cell and Tissue Culture with Tissue Bank in the years 2011-2015. Cell Tissue Bank 2016; 18:61-68. [PMID: 27796524 DOI: 10.1007/s10561-016-9597-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 10/24/2016] [Indexed: 12/20/2022]
Abstract
Radiation sterilization eliminates microbiological infections but causes the degradation of the cell factor. The negative result of microbiological examination for tissue transplants is one of the conditions for approval for distribution in patients. The study attempts to verify impact of the presence of microbes onto material for transplant loss. In the 2011-2015 period, we analyzed 293 donors of skin and amnion. Microbiological sampling was performed. The total of 21 strains of bacteria, molds and fungi was identified in collected tissue. The widest spectrum of strains was found in skin (17), followed by amnia (8). The total number of positive findings was 147 and was again highest in skin (129), while the number of positive findings in amnia was 18 only. The general percentage of fungal infections was very low. The presence of fungal strains was only observed in allogeneic skin (2%). Large number of microorganisms isolated from the skin before sterilization was observed, so it seems impossible to use allogeneic intravital skin. However, the intravital application of allogeneic amnion obtained from cesarean section remains to be considered.
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Affiliation(s)
- D Kitala
- Dr Stanisław Sakiel Center for Burns Treatment, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland.
| | - A Klama-Baryła
- Dr Stanisław Sakiel Center for Burns Treatment, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland
| | - M Kawecki
- Dr Stanisław Sakiel Center for Burns Treatment, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland.,Department of Health Sciences, Technical-Humanistic Academy, Willowa 2, 43-309, Bielsko-Biała, Poland
| | - M Kraut
- Dr Stanisław Sakiel Center for Burns Treatment, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland
| | - W Łabuś
- Dr Stanisław Sakiel Center for Burns Treatment, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland
| | - J Glik
- Dr Stanisław Sakiel Center for Burns Treatment, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland.,Department of Chronic Wounds Management Organization, School of Health Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - M Ples
- Dr Stanisław Sakiel Center for Burns Treatment, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland
| | - E Tomanek
- Non-Public Laboratory of Microbiology, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland
| | - M Nowak
- Dr Stanisław Sakiel Center for Burns Treatment, Jana Pawła II 2, 41-100, Siemianowice Śląskie, Poland
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11
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Marsit N, Dwejen S, Saad I, Abdalla S, Shaab A, Salem S, Khanfas E, Hasan A, Mansur M, Abdul Sammad M. Substantiation of 25 kGy radiation sterilization dose for banked air dried amniotic membrane and evaluation of personnel skill in influencing finished product bioburden. Cell Tissue Bank 2014; 15:603-11. [PMID: 24676699 PMCID: PMC4221624 DOI: 10.1007/s10561-014-9433-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 02/27/2014] [Indexed: 11/24/2022]
Abstract
Preparation of amniotic membrane (AM) by air drying method followed by radiation sterilization is simple and valuable approach; sterility and quality of the final AM product are depending on the quality management system at the tissue bank. Validation and substantiation of radiation sterilization dose (RSD) for tissue allografts is an essential step for the development and validation of the standard operating procedures (SOP). Application of SOP is perfectly relying on trained staff. Skills differences among personnel involved in AM preparation could have an effect on microbiological quality of the finished product and subsequently on the RSD required. AM were processed by four different couples of the tissue bank technicians. The AM grafts were randomly selected and subjected to bioburden test to validate and substantiate the 25 kGy RSD. Bioburden test for AM grafts were also useful to evaluate the skill of the tissue bank technicians and thus, to validate the current SOP for air dried AM. Moreover, the effect of placental source on bioburden counts on AM grafts was assessed. Substantiation of the 25 kGy RSD at a sterility assurance level of 10−1, and sample item portion = 1, was carried out using Method VDmax25 of the International Organization for Standardization, document no. 11137-2 (ISO in Sterilization of healthcare products—radiation—part 2: establishing the sterilization dose, Method VDmax—substantiation of 25 kGy or 15 kGy as the sterilization dose, International Standard Organization, 2006). The results showed that there were no significant differences in the bioburdens of the four batches (α = 1 %), this means no significant differences in the skill of the four couples of the tissue bank technicians in terms of their ability to process AM according to the air dried AM SOP. The 25 kGy RSD was validated and substantiated as a valid sterilization dose for the AM prepared with the current established SOP at the Biotechnology Research Center experimental tissue bank. The donor’s type of delivery, normal or caesarean, showed no significant effect on the levels of microbial counts on the tested AMs (α = 1 %).
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Affiliation(s)
- Nagi Marsit
- Tissue Banking Research Group, Biotechnology Research Center, Tweisha, Libyan Authority for Research, Science and Technology, P. O. Box 30313, Tripoli, Libya,
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Kollanoor-Johny A, Upadhyay A, Baskaran S, Upadhyaya I, Mooyottu S, Mishra N, Darre M, Khan M, Donoghue A, Donoghue D, Venkitanarayanan K. Effect of therapeutic supplementation of the plant compounds trans-cinnamaldehyde and eugenol on Salmonella enterica serovar Enteritidis colonization in market-age broiler chickens. J APPL POULTRY RES 2012. [DOI: 10.3382/japr.2012-00540] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Kollanoor-Johny A, Mattson T, Baskaran SA, Amalaradjou MA, Babapoor S, March B, Valipe S, Darre M, Hoagland T, Schreiber D, Khan MI, Donoghue A, Donoghue D, Venkitanarayanan K. Reduction of Salmonella enterica serovar enteritidis colonization in 20-day-old broiler chickens by the plant-derived compounds trans-cinnamaldehyde and eugenol. Appl Environ Microbiol 2012; 78:2981-7. [PMID: 22327574 DOI: 10.1128/AEM.07643-11] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The efficacies of trans-cinnamaldehyde (TC) and eugenol (EG) for reducing Salmonella enterica serovar Enteritidis colonization in broiler chickens were investigated. In three experiments for each compound, 1-day-old chicks (n = 75/experiment) were randomly assigned to five treatment groups (n = 15/treatment group): negative control (-ve S. Enteritidis, -ve TC, or EG), compound control (-ve S. Enteritidis, +ve 0.75% [vol/wt] TC or 1% [vol/wt] EG), positive control (+ve S. Enteritidis, -ve TC, or EG), low-dose treatment (+ve S. Enteritidis, +ve 0.5% TC, or 0.75% EG), and high-dose treatment (+ve S. Enteritidis, +ve 0.75% TC, or 1% EG). On day 0, birds were tested for the presence of any inherent Salmonella (n = 5/experiment). On day 8, birds were inoculated with ∼8.0 log(10) CFU S. Enteritidis, and cecal colonization by S. Enteritidis was ascertained (n = 10 chicks/experiment) after 24 h (day 9). Six birds from each treatment group were euthanized on days 7 and 10 after inoculation, and cecal S. Enteritidis numbers were determined. TC at 0.5 or 0.75% and EG at 0.75 or 1% consistently reduced (P < 0.05) S. Enteritidis in the cecum (≥3 log(10) CFU/g) after 10 days of infection in all experiments. Feed intake and body weight were not different for TC treatments (P > 0.05); however, EG supplementation led to significantly lower (P < 0.05) body weights. Follow-up in vitro experiments revealed that the subinhibitory concentrations (SICs, the concentrations that did not inhibit Salmonella growth) of TC and EG reduced the motility and invasive abilities of S. Enteritidis and downregulated expression of the motility genes flhC and motA and invasion genes hilA, hilD, and invF. The results suggest that supplementation with TC and EG through feed can reduce S. Enteritidis colonization in chickens.
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Kollanoor Johny A, Darre M, Donoghue A, Donoghue D, Venkitanarayanan K. Antibacterial effect of trans-cinnamaldehyde, eugenol, carvacrol, and thymol on Salmonella Enteritidis and Campylobacter jejuni in chicken cecal contents in vitro. J APPL POULTRY RES 2010. [DOI: 10.3382/japr.2010-00181] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Nguyen H, Morgan DAF, Sly LI, Benkovich M, Cull S, Forwood MR. Validation of 15 kGy as a radiation sterilisation dose for bone allografts manufactured at the Queensland Bone Bank: application of the VDmax 15 method. Cell Tissue Bank 2008; 9:139-47. [DOI: 10.1007/s10561-008-9064-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2007] [Accepted: 02/18/2008] [Indexed: 11/26/2022]
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