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Kunz RI, Brancalhão RMC, Ribeiro LDFC, Natali MRM. Silkworm Sericin: Properties and Biomedical Applications. BIOMED RESEARCH INTERNATIONAL 2016; 2016:8175701. [PMID: 27965981 PMCID: PMC5124675 DOI: 10.1155/2016/8175701] [Citation(s) in RCA: 193] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 09/05/2016] [Accepted: 10/12/2016] [Indexed: 01/23/2023]
Abstract
Silk sericin is a natural polymer produced by silkworm, Bombyx mori, which surrounds and keeps together two fibroin filaments in silk thread used in the cocoon. The recovery and reuse of sericin usually discarded by the textile industry not only minimizes environmental issues but also has a high scientific and commercial value. The physicochemical properties of the molecule are responsible for numerous applications in biomedicine and are influenced by the extraction method and silkworm lineage, which can lead to variations in molecular weight and amino acid concentration of sericin. The presence of highly hydrophobic amino acids and its antioxidant potential make it possible for sericin to be applied in the food and cosmetic industry. The moisturizing power allows indications as a therapeutic agent for wound healing, stimulating cell proliferation, protection against ultraviolet radiation, and formulating creams and shampoos. The antioxidant activity associated with low digestibility of sericin that expands the application in the medical field, such as antitumour, antimicrobial and anti-inflammatory agent, anticoagulant, acts in colon health, improving constipation and protects the body from obesity through improved plasma lipid profile. In addition, the properties of sericin allow its application as a culture medium and cryopreservation, in tissue engineering and for drug delivery, demonstrating its effective use, as an important biomaterial.
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Affiliation(s)
- Regina Inês Kunz
- Department of Morphological Sciences, State University of Maringá, Av. Colombo, 5790, 87020-900 Maringá, PR, Brazil
| | - Rose Meire Costa Brancalhão
- Center of Biological Sciences and Health, State University of Western Paraná, Rua Universitária, 2069, 85819-110 Cascavel, PR, Brazil
| | - Lucinéia de Fátima Chasko Ribeiro
- Center of Biological Sciences and Health, State University of Western Paraná, Rua Universitária, 2069, 85819-110 Cascavel, PR, Brazil
| | - Maria Raquel Marçal Natali
- Department of Morphological Sciences, State University of Maringá, Av. Colombo, 5790, 87020-900 Maringá, PR, Brazil
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Aramwit P, Ekasit S, Yamdech R. The development of non-toxic ionic-crosslinked chitosan-based microspheres as carriers for the controlled release of silk sericin. Biomed Microdevices 2016; 17:84. [PMID: 26233725 DOI: 10.1007/s10544-015-9991-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Silk sericin is recently shown to possess various biological activities for biomedical applications. While various sericin carriers were developed for drug delivery system, very few researches considered sericin as a bioactive molecule itself. In this study, sericin incorporated in the chitosan-based microspheres was introduced as a bioactive molecule and bioactive carrier at the same time. The chitosan/sericin (CH/SS) microspheres at different composition (80/20, 70/30, 60/40, and 50/50) were successfully fabricated using anhydroustri-polyphosphate (TPP) as a polyanionic crosslinker. The microspheres with an average size of 1-4 μm and narrow size distribution were obtained. From FT-IR spectra, the presence of both chitosan and sericin in the microspheres confirmed the occurrence of ionic interaction that crosslink them within the microspheres. We also found that the CH/SS microspheres prepared at 50/50 could encapsulate sericin at the highest percentage (37.28%) and release sericin in the most sustained behavior, possibly due to the strong ionic interaction of the positively charged chitosan and the negatively charged sericin. On the other hand, the composition of CH/SS had no effect on the degradation rate of microspheres. All microspheres continuously degraded and remained around 20% after 14 days of enzymatic degradation. This explained that the ionic crosslinkings between chitosan and sericin could be demolished by the enzyme and hydrolysis. Furthermore, we have verified that all CH/SS microspheres at any concentrations showed non-toxicity to L929 mouse fibroblast cells. Therefore, we suggested that the non-toxic ionic-crosslinked CH/SS microspheres could be incorporated in wound dressing material to achieve the sustained release of sericin for accelerated wound healing.
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Affiliation(s)
- Pornanong Aramwit
- Bioactive Resources for Innovative Clinical Applications Research Unit and Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Chulalongkorn University, PhayaThai Road, Phatumwan, Bangkok, 10330, Thailand,
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Aramwit P, Yamdech R, Ampawong S. Controlled Release of Chitosan and Sericin from the Microspheres-Embedded Wound Dressing for the Prolonged Anti-microbial and Wound Healing Efficacy. AAPS JOURNAL 2016; 18:647-58. [PMID: 26935427 DOI: 10.1208/s12248-016-9897-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 02/23/2016] [Indexed: 11/30/2022]
Abstract
One approach in wound dressing development is to incorporate active molecules or drugs in the dressing. In order to reduce the frequency of dressing changes as well as to prolong wound healing efficacy, wound dressings that can sustain the release of the active molecules should be developed. In our previous work, we developed chitosan/sericin (CH/SS) microspheres that released sericin in a controlled rate. However, the difficulty of applying the microspheres that easily diffuse and quickly degrade onto the wound was its limitations. In this study, we aimed to develop wound dressing materials which are easier to apply and to provide extended release of sericin. Different amounts of CH/SS microspheres were embedded into various compositions of polyvinyl alcohol/gelatin (PVA/G) scaffolds and fabricated using freeze-drying and glutaraldehyde crosslinking techniques. The obtained CH/SS microspheres-embedded scaffolds with appropriate design and formulation were introduced as a wound dressing material. Sericin was released from the microspheres and the scaffolds in a sustained manner. Furthermore, an optimized formation of the microspheres-embedded scaffolds (2PVA2G+2CHSS) was shown to possess an effective antimicrobial activity against both gram-positive and gram-negative bacteria. These microspheres-embedded scaffolds were not toxic to L929 mouse fibroblast cells, and they did not irritate the tissue when applied to the wound. Finally, probably by the sustained release of sericin, these microspheres-embedded scaffolds could promote wound healing as well as or slightly better than a clinically used wound dressing (Allevyn®) in a mouse model. The antimicrobial CH/SS microspheres-embedded PVA/G scaffolds with sustained release of sericin would appear to be a promising candidate for wound dressing application.
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Affiliation(s)
- Pornanong Aramwit
- Bioactive Resources for Innovative Clinical Applications Research Unit and Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Chulalongkorn University, PhayaThai Road, Phatumwan, Bangkok, 10330, Thailand.
| | - Rungnapha Yamdech
- Bioactive Resources for Innovative Clinical Applications Research Unit and Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Chulalongkorn University, PhayaThai Road, Phatumwan, Bangkok, 10330, Thailand
| | - Sumate Ampawong
- Department of Tropical Pathology, Faculty of Tropical Medicine, Mahidol University, Ratchawithi Road, Ratchathewi, Bangkok, 10400, Thailand
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A prospective clinical trial comparing Biobrane ® Dressilk ® and PolyMem ® dressings on partial-thickness skin graft donor sites. Burns 2016; 42:345-55. [DOI: 10.1016/j.burns.2014.12.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 12/18/2014] [Accepted: 12/25/2014] [Indexed: 01/04/2023]
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55
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Napavichayanun S, Yamdech R, Aramwit P. The safety and efficacy of bacterial nanocellulose wound dressing incorporating sericin and polyhexamethylene biguanide: in vitro, in vivo and clinical studies. Arch Dermatol Res 2016; 308:123-32. [DOI: 10.1007/s00403-016-1621-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 11/06/2015] [Accepted: 01/08/2016] [Indexed: 01/10/2023]
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Lamboni L, Gauthier M, Yang G, Wang Q. Silk sericin: A versatile material for tissue engineering and drug delivery. Biotechnol Adv 2015; 33:1855-67. [DOI: 10.1016/j.biotechadv.2015.10.014] [Citation(s) in RCA: 200] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 10/24/2015] [Accepted: 10/30/2015] [Indexed: 10/22/2022]
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Xie H, Yang W, Chen J, Zhang J, Lu X, Zhao X, Huang K, Li H, Chang P, Wang Z, Wang L. A silk sericin/silicone nerve guidance conduit promotes regeneration of a transected sciatic nerve. Adv Healthc Mater 2015; 4:2195-205. [PMID: 26332703 DOI: 10.1002/adhm.201500355] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/23/2015] [Indexed: 01/01/2023]
Abstract
Peripheral nerve gap defects lead to significant loss of sensory or motor function. Tissue engineering has become an important alternative to nerve repair. Sericin, a major component of silk, is a natural protein whose value in tissue engineering has just begun to be explored. Here, the first time use of sericin in vivo is reported as a long-term implant for peripheral nerve regeneration. A sericin nerve guidance conduit is designed and fabricated. This conduit is highly porous with mechanical strength matching peripheral nerve tissue. It supports Schwann cell proliferation and is capable of up-regulating the transcription of glial cell derived neurotrophic factor and nerve growth factor in Schwann cells. The sericin conduit wrapped with a silicone conduit (sericin/silicone double conduits) is used for bridging repair of a 5 mm gap in a rat sciatic nerve transection model. The sericin/silicone double conduits achieve functional recovery comparable to that of autologous nerve grafting as evidenced by drastically improved nerve function and morphology. Importantly, this improvement is mainly attributed to the sericin conduit as the silicone conduit alone only produces marginal functional recovery. This sericin/silicone-double-conduit strategy offers an efficient and valuable alternative to autologous nerve grafting for repairing damaged peripheral nerve.
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Affiliation(s)
- Hongjian Xie
- Center for Tissue Engineering and Regenerative Medicine; Union Hospital; Huazhong University of Science and Technology; Wuhan Hubei 430022 China
| | - Wen Yang
- Center for Tissue Engineering and Regenerative Medicine; Union Hospital; Huazhong University of Science and Technology; Wuhan Hubei 430022 China
| | - Jianghai Chen
- Department of Hand Surgery; Union Hospital; Huazhong University of Science & Technology; Wuhan Hubei 430022 China
| | - Jinxiang Zhang
- Department of Gastrointestinal Surgery; Union Hospital; Huazhong University of Science & Technology; Wuhan Hubei 430022 China
| | - Xiaochen Lu
- Department of Hand Surgery; Union Hospital; Huazhong University of Science & Technology; Wuhan Hubei 430022 China
| | - Xiaobo Zhao
- Department of Hand Surgery; Union Hospital; Huazhong University of Science & Technology; Wuhan Hubei 430022 China
| | - Kun Huang
- Department of Cardiology; Union Hospital; Huazhong University of Science and Technology; Wuhan Hubei 430022 China
| | - Huili Li
- Department of Gastrointestinal Surgery; Union Hospital; Huazhong University of Science & Technology; Wuhan Hubei 430022 China
| | - Panpan Chang
- Center for Tissue Engineering and Regenerative Medicine; Union Hospital; Huazhong University of Science and Technology; Wuhan Hubei 430022 China
| | - Zheng Wang
- Center for Tissue Engineering and Regenerative Medicine; Union Hospital; Huazhong University of Science and Technology; Wuhan Hubei 430022 China
- Department of Gastrointestinal Surgery; Union Hospital; Huazhong University of Science & Technology; Wuhan Hubei 430022 China
| | - Lin Wang
- Center for Tissue Engineering and Regenerative Medicine; Union Hospital; Huazhong University of Science and Technology; Wuhan Hubei 430022 China
- Department of Laboratory Medicine; Union Hospital; Huazhong University of Science and Technology; Wuhan Hubei 430022 China
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Napavichayanun S, Amornsudthiwat P, Pienpinijtham P, Aramwit P. Interaction and effectiveness of antimicrobials along with healing-promoting agents in a novel biocellulose wound dressing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 55:95-104. [DOI: 10.1016/j.msec.2015.05.026] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 03/15/2015] [Accepted: 05/07/2015] [Indexed: 11/26/2022]
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Characteristics of carboxymethyl cellulose/sericin hydrogels and the influence of molecular weight of carboxymethyl cellulose. Macromol Res 2015. [DOI: 10.1007/s13233-015-3116-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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60
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Randomized Clinical Trial of the Innovative Bilayered Wound Dressing Made of Silk and Gelatin: Safety and Efficacy Tests Using a Split-Thickness Skin Graft Model. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015. [PMID: 26221170 PMCID: PMC4499634 DOI: 10.1155/2015/206871] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We developed the novel silk fibroin-based bilayered wound dressing for the treatment of partial thickness wounds. And it showed relevant characteristics and accelerated the healing of full-thickness wounds in a rat model. This study is the clinical evaluation of the bilayered wound dressing to confirm its safety and efficacy for the treatment of split-thickness skin donor sites. The safety test was performed using a patch model and no evidence of marked and severe cutaneous reactions was found. The efficacy test of the bilayered wound dressing was conducted on 23 patients with 30 split-thickness skin graft donor sites to evaluate healing time, pain score, skin barrier function, and systemic reaction in comparison to Bactigras. We found that the healing time of donor site wounds treated with the bilayered wound dressing (11 ± 6 days) was significantly faster than those treated with Bactigras (14 ± 6 days) (p = 10−6). The wound sites treated with the bilayered wound dressing showed significantly less pain and more rapid skin functional barrier recovery than those treated with Bactigras (p = 10−5). Therefore, these results confirmed the clinical safety and efficacy of the bilayered wound dressing for the treatment of split-thickness skin graft donor sites.
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Valentini SR, Nogueira AC, Fenelon VC, Sato F, Medina AN, Santana RG, Baesso ML, Matioli G. Insulin complexation with hydroxypropyl-beta-cyclodextrin: Spectroscopic evaluation of molecular inclusion and use of the complex in gel for healing of pressure ulcers. Int J Pharm 2015; 490:229-39. [DOI: 10.1016/j.ijpharm.2015.05.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 04/23/2015] [Accepted: 05/13/2015] [Indexed: 12/27/2022]
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Vyas KS, Vasconez HC. Wound Healing: Biologics, Skin Substitutes, Biomembranes and Scaffolds. Healthcare (Basel) 2014; 2:356-400. [PMID: 27429283 PMCID: PMC4934597 DOI: 10.3390/healthcare2030356] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/08/2014] [Accepted: 08/19/2014] [Indexed: 12/25/2022] Open
Abstract
This review will explore the latest advancements spanning several facets of wound healing, including biologics, skin substitutes, biomembranes and scaffolds.
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Affiliation(s)
- Krishna S Vyas
- Division of Plastic Surgery, Department of Surgery, University of Kentucky, Kentucky Clinic K454, 740 South Limestone, Lexington, KY 40536, USA.
| | - Henry C Vasconez
- Division of Plastic Surgery, Department of Surgery, University of Kentucky, Kentucky Clinic K454, 740 South Limestone, Lexington, KY 40536, USA.
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Abstract
There are many options for nonmicrosurgical soft tissue coverage of hand wounds, ranging from split thickness skin grafting to pedicled soft tissue transfer, depending on the size, location, blood supply, and depth of the wound. Although many of these techniques have been available for decades, recent advancements in wound management include synthetic dermal substitution, new dressing materials, and variations on previously described or novel pedicled flaps.The goals of coverage include maximizing healing, function, aesthetic appearance, and patient satisfaction, while minimizing donor site morbidity. Optimal management often relies on an individual surgeon's assessment and judgment, as hand wounds can vary greatly and pose unique challenges, and multiple coverage options often exist for each wound. Here, we aim to present useful and up-to-date information on nonmicrosurgical soft tissue coverage for hand reconstruction focusing on recent findings of interest to provide an update on areas with evolving evidence.
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Affiliation(s)
- Jun Matsui
- Washington University in St. Louis, 660 S. Euclid Ave. Campus, Box 8233, St. Louis, MO 63110 USA
| | - Samantha Piper
- Washington University in St. Louis, 660 S. Euclid Ave. Campus, Box 8233, St. Louis, MO 63110 USA
| | - Martin I. Boyer
- Washington University in St. Louis, 660 S. Euclid Ave. Campus, Box 8233, St. Louis, MO 63110 USA
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