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Cheng C, Chen Y, Chang H, Chang K, Huang S, Liu S, Chen W. In vitro evaluation of antibacterial activity and biocompatibility of synergistically cross-linked gelatin-alginate hydrogel beads as gentamicin carriers. J Drug Deliv Sci Technol 2023; 79:104078. [DOI: 10.1016/j.jddst.2022.104078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Hu MH, Yang KC, Chen CW, Chu PH, Chang YL, Sun YH, Lin FH, Yang SH. Multilayer Electrospun-Aligned Fibroin/Gelatin Implant for Annulus Fibrosus Repair: An In Vitro and In Vivo Evaluation. Biomedicines 2022; 10:biomedicines10092107. [PMID: 36140208 PMCID: PMC9495938 DOI: 10.3390/biomedicines10092107] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Annulus fibrosus (AF) damage is proven to prompt intervertebral disc (IVD) degeneration, and unrepaired AF lesions after surgical discectomy may boost herniation of the nucleus pulposus (NP) which may lead to further compression of neural structures. Moreover, vascular and neural ingrowth may occur within the defect which is known as a possible reason for discogenic pain. Due to a limited healing capacity, an effective strategy to repair and close the AF defect is necessary. In this study, using electrospinning technology, two nature polymers, silk fibroin and gelatin, were linked to imitate the unique lamellae structure of native AF. Our findings revealed that a multilayer electrospun-aligned fibroin/gelatin scaffold with mechanical and morphological properties mimicking those of native AF lamellae have been developed. The average diameter of the nanofiber is 162.9 ± 38.8 nm. The young’s modulus is around 6.70 MPa with an ultimate tensile strength of around 1.81 MP along preferred orientation. The in vitro test confirmed its biocompatibility and ability to maintain cell viability and colonization. Using a porcine model, we demonstrated that the multilayer-aligned scaffold offered a crucial microenvironment to induce collagen fibrous tissue production within native AF defect. In the implant-repaired AF, H&E staining showed homogeneous fibroblast-like cell infiltration at the repaired defect with very little vascular ingrowth, which was confirmed by magnetic resonance imaging findings. Picrosirius red staining and immunohistochemical staining against type I collagen revealed positively stained fibrous tissue in an aligned pattern within the implant-integrated site. Relative to the intact control group, the disc height index of the serial X-ray decreased significantly in both the injury control and implant group at 4 weeks and 8 weeks (p < 0.05) which indicated this scaffold may not reverse the degenerative process. However, the results of the discography showed that the effectiveness of annulus repair of the implant group is much superior to that of the untreated group. The scaffold, composed with nature fibroin/gelatin polymers, could potentially enhance AF healing that could prevent IVD recurrent herniation, as well as neural and neovascular ingrowth after discectomy surgeries.
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Affiliation(s)
- Ming-Hsiao Hu
- Department of Orthopedics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei 100225, Taiwan
| | - Kai-Chiang Yang
- Department of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Chih-Wei Chen
- Department of Orthopedics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei 100225, Taiwan
- Department of Biomedical Engineering, National Taiwan University, Taipei 106216, Taiwan
| | - Po-Han Chu
- Department of Biomedical Engineering, National Taiwan University, Taipei 106216, Taiwan
| | - Yun-Liang Chang
- Department of Orthopedics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei 100225, Taiwan
| | - Yuan-Hui Sun
- Department of Orthopedics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei 100225, Taiwan
| | - Feng-Huei Lin
- Department of Biomedical Engineering, National Taiwan University, Taipei 106216, Taiwan
| | - Shu-Hua Yang
- Department of Orthopedics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei 100225, Taiwan
- Correspondence: ; Tel.: +886-2-2312-3456 (ext. 63981)
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Kantono K, Hamid N, Malavalli MM, Liu Y, Liu T, Seyfoddin A. Consumer Acceptance and Production of In Vitro Meat: A Review. Sustainability 2022; 14:4910. [DOI: 10.3390/su14094910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In vitro meat (IVM) is a recent development in the production of sustainable food. The consumer perception of IVM has a strong impact on the commercial success of IVM. Hence this review examines existing studies related to consumer concerns, acceptance and uncertainty of IVM. This will help create better marketing strategies for IVM-producing companies in the future. In addition, IVM production is described in terms of the types of cells and culture conditions employed. The applications of self-organising, scaffolding, and 3D printing techniques to produce IVM are also discussed. As the conditions for IVM production are controlled and can be manipulated, it will be feasible to produce a chemically safe and disease-free meat with improved consumer acceptance on a sustainable basis.
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Duangpakdee A, Laomeephol C, Jindatip D, Thongnuek P, Ratanavaraporn J, Damrongsakkul S. Crosslinked Silk Fibroin/Gelatin/Hyaluronan Blends as Scaffolds for Cell-Based Tissue Engineering. Molecules 2021; 26:molecules26113191. [PMID: 34073542 PMCID: PMC8198693 DOI: 10.3390/molecules26113191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/20/2021] [Accepted: 05/21/2021] [Indexed: 11/16/2022] Open
Abstract
3D porous scaffolds fabricated from binary and ternary blends of silk fibroin (SF), gelatin (G), and hyaluronan (HA) and crosslinked by the carbodiimide coupling reaction were developed. Water-stable scaffolds can be obtained after crosslinking, and the SFG and SFGHA samples were stable in cell culture medium up to 10 days. The presence of HA in the scaffolds with appropriate crosslinking conditions greatly enhanced the swellability. The microarchitecture of the freeze-dried scaffolds showed high porosity and interconnectivity. In particular, the pore size was significantly larger with an addition of HA. Biological activities of NIH/3T3 fibroblasts seeded on SFG and SFGHA scaffolds revealed that both scaffolds were able to support cell adhesion and proliferation of a 7-day culture. Furthermore, cell penetration into the scaffolds can be observed due to the interconnected porous structure of the scaffolds and the presence of bioactive materials which could attract the cells and support cell functions. The higher cell number was noticed in the SFGHA samples, possibly due to the HA component and the larger pore size which could improve the microenvironment for fibroblast adhesion, proliferation, and motility. The developed scaffolds from ternary blends showed potential in their application as 3D cell culture substrates in fibroblast-based tissue engineering.
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Affiliation(s)
- Anongnart Duangpakdee
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chavee Laomeephol
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
| | - Depicha Jindatip
- Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Peerapat Thongnuek
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Juthamas Ratanavaraporn
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Siriporn Damrongsakkul
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: ; Tel.: +662-218-6862; Fax: +662-218-6877
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Ito M, Toriumi T, Hiratsuka T, Imura H, Akiyama Y, Chimedtseren I, Arai Y, Yamaguchi K, Azuma A, Hata KI, Natsume N, Honda M. A Novel Bone Substitute Based on Recombinant Type I Collagen for Reconstruction of Alveolar Cleft. Materials (Basel) 2021; 14:2306. [PMID: 33946797 DOI: 10.3390/ma14092306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/22/2021] [Accepted: 04/22/2021] [Indexed: 11/29/2022]
Abstract
This study aimed to examine the optimal cross-link density of recombinant peptide (RCP) particles, based on human collagen type I, for bone reconstruction in human alveolar cleft. Low- (group 1), medium- (group 2), and high- (group 3) cross-linked RCP particles were prepared by altering the duration of the heat-dependent dehydration reaction. Rat palatine fissures (n = 45), analogous to human congenital bone defects, were examined to evaluate the potential of bone formation by the three different RCP particles. Microcomputed tomography images were obtained to measure bone volume and bone mineral density at 4, 8, 12, and 16 weeks post grafting. Specimens were obtained for histological analysis at 16 weeks after grafting. Additionally, alkaline phosphatase and tartrate acid phosphatase staining were performed to visualize the presence of osteoblasts and osteoclasts. At 16 weeks, bone volume, bone mineral density, and new bone area measurements in group 2 were significantly higher than in any other group. In addition, the number of osteoblasts and osteoclasts on the new bone surface in group 2 was significantly higher than in any other group. Our results demonstrated that medium cross-linking was more suitable for bone formation—and could be useful in human alveolar cleft repairs as well.
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Yang JJ, Lin YY, Chao KH, Wang JL. Gelatin-Poly (γ-Glutamic Acid) Hydrogel as a Potential Adhesive for Repair of Intervertebral Disc Annulus Fibrosus: Evaluation of Cytocompatibility and Degradability. Spine (Phila Pa 1976) 2021; 46:E243-9. [PMID: 33475276 DOI: 10.1097/BRS.0000000000003767] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN An in vitro experimental study testing a Gelatin-poly (γ-glutamic acid) hydrogel for disc repair. OBJECTIVE To evaluate the cytocompatibility and degradability of the above mentioned hydrogel for intervertebral disc annular fibrosis (AF) repair. SUMMARY OF BACKGROUND DATA No repair strategies for correcting annular defects in lumbar discectomy have been clinically well recognized. Exogenous supplementation of regenerative materials to fill defects is a minimally invasive way to restore compromised mechanical properties. The injected materials, most commonly gelatin-based materials with cross-linking agents, serve as sealants and as a scaffold for incorporating biomaterials for augmentation. However, cytotoxicity of hydrogel crosslinking agents is of concern in developing viable materials. METHODS This in vitro experimental study evaluated a newly developed gelatin-based hydrogel for intervertebral disc AF repair. Mechanical strength was augmented by γ-PGA, and 1-(3-dimethylaminopropyl)-3-ethyl-carbodiimide hydrochloride (EDC) was used for material crosslinking. Isolated bovine tail intervertebral discs (IVDs) were used to test the hydrogel, and hydrogel surface monolayer AF cell culture was used to investigate efficacy in hydrogel constructs of different EDC concentrations. Cell metabolic activity was evaluated with Alamar blue assay, cell viability assay with live/dead stain, and sulfated glycosaminoglycan (GAG) and double strain DNA were quantified to evaluate proliferation of implanted cells and synthesis of extracellular matrix (ECM) proteins. RESULTS EDC concentrations from 10 to 40 mM resulted in significant decreases in AF cell proliferation without obvious influence on cell viability. Higher EDC concentrations resulted in decreased percentage of Alamar blue reduction and GAG and DNA concentration, but did not affect GAG/DNA and live-dead ratios. Degradation tests revealed that higher EDC concentrations decreased the hydrogel degradation rate. CONCLUSION The developed gelatin-poly (γ-PGA) hydrogel with 20 mM EDC concentration provides an effective gap-filling biomaterial with good cytocompatibility, suggesting substantial promise for use as a sealant for small AF defects.Level of Evidence: N/A.
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Kishan A, Buie T, Whitfield-Cargile C, Jose A, Bryan L, Cohen N, Cosgriff-Hernandez E. In vivo performance of a bilayer wrap to prevent abdominal adhesions. Acta Biomater 2020; 115:116-126. [PMID: 32846239 DOI: 10.1016/j.actbio.2020.08.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/13/2020] [Accepted: 08/18/2020] [Indexed: 12/27/2022]
Abstract
There is a high prevalence of intra-abdominal adhesions following bowel resection, which can result in chronic pain, bowel obstruction, and morbidity. Although commercial adhesion barriers have been widely utilized for colonic resections, these barriers do not prevent anastomotic leakage resulting from reduced healing of the anastomosis, which can result in long-term health problems. To address this limitation, we have developed an adhesive bilayer wrap with selective bioactivity to simultaneously prevent intra-abdominal adhesion formation and promote anastomotic healing. Reactive electrospinning was used to generate a crosslinked gelatin mesh to serve as a cell-instructive substrate to improve anastomotic healing. A coating of poly(ethylene glycol) (PEG) foam was applied to the bioactive mesh to generate an antifouling layer and prevent intra-abdominal adhesions. After in vitro confirmation of selective bioactivity, the composite wrap was compared after 2 weeks to a commercial product (InterceedⓇ) in an in vivo rat colonic abrasion model for prevention of intra-abdominal adhesions. The composite bilayer wrap was able to prevent intra-abdominal adhesions when clinical placement was maintained. The composite bilayer wrap was further modified to include tissue adhesive properties for improved efficacy. Preliminary studies indicated that the adhesive composite bilayer wrap maintained a maximum shear strength comparable to InterceedⓇ and greater than fibrin glue. Overall, this work resulted in an initial proof-of-concept device that was shown to effectively prevent intra-abdominal adhesion formation in vivo. The composite bilayer wrap studied here could lead to an improved technology for improved healing of intestinal anastomoses.
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Affiliation(s)
- Alysha Kishan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843 United States.
| | - Taneidra Buie
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712 United States.
| | - Canaan Whitfield-Cargile
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, 77843 United States.
| | - Anupriya Jose
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712 United States.
| | - Laura Bryan
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, 77843 United States.
| | - Noah Cohen
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, 77843 United States.
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Shatabayeva E, Mun G, Shaikhutdinov Y, Khutoryanskiy V. Gelatin: sources, preparation and application in food and biomedicine. KazNU Chem Bull 2020. [DOI: 10.15328/cb1112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Gelatin is a proteinaceous substance composed of all the essential amino acids (except tryptophan) and derived from collagen using a hydrolysis technique. Hydrogels and modified composites based on gelatin are widely used in the food industry, biomedicine, pharmaceutical industry and food packaging materials due to their biocompatibility, biodegradability, nonimmunogenicity and ability to stimulate cell adhesion and proliferation. Gelatin can absorb 5-10 times its weight of water and is the main ingredient of hard and soft capsules in pharmaceutical industry. It melts above 30°C and easily releases biologically active compounds, nutrients and drugs in human gastrointestinal tract. In addition, gelatin contains arginine-glycine-asparagine RGD-sequences in the polymer structure and contributes to various functions such as antioxidant, anti-hypertensive, anti-microbial, tissue regeneration, wound healing, enhances bone formation and anti-cancer therapy. This article reports a brief overview of gelatin sources, gelatin preparation processes and its physico-chemical properties, as well as advances in the preparation of gelatin-based composite materials and hydrogels for tissue engineering, drug delivery, wound dressings, active packaging using various cross-linking techniques.
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Jantrawut P, Bunrueangtha J, Suerthong J, Kantrong N. Fabrication and Characterization of Low Methoxyl Pectin/Gelatin/Carboxymethyl Cellulose Absorbent Hydrogel Film for Wound Dressing Applications. Materials (Basel) 2019; 12:E1628. [PMID: 31108960 DOI: 10.3390/ma12101628] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 11/18/2022]
Abstract
In this study, hydrogel films composed of low methoxyl pectin (LMP), gelatin, and carboxymethyl cellulose (CMC) were fabricated. Glycerin was used as a plasticizer while glutaraldehyde (Glu) and calcium chloride (CaCl2) were used as crosslinking agents in film preparation. Hydrogel films were morphologically characterized and evaluated for mechanical properties. In addition, the investigations for fluid uptake ability, water retention capacity, water vapor transmission rate, and integrity value of the invented films were performed. The results showed that F-Glu-Ca-G30 film demonstrated superior properties when compared to other prepared films. It demonstrated a high percentage of elongation at break (32.80%), fluid uptake ability (88.45% at 2 h), water retention capacity (81.70% at 2 h), water vapor transmission rate (1889 g/m2/day), and integrity value (86.42%). F-Glu-Ca-G30 film was subsequently selected for 10% w/w povidone iodine (PI) loading and tested for anti-Staphylococcus aureus activity using an agar diffusion assay. Notably, F-Glu-Ca-G30-PI film demonstrated a dramatic ability to inhibit microbial growth, when compared to both a blank film and iodine solution control. Our LMP/gelatin/CMC hydrogel film promises to be an effective dressing material with high fluid absorption capacity, fluid holding ability, and water vapor transmission rate. Incorporation of antibiotics such as povidone iodine into the films conferred its antimicrobial property thereby highlighting its potential dermatological use. However, further clinical studies of the application of this hydrogel film as wound dressing material is recommended.
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Shin DY, Cheon KH, Song EH, Seong YJ, Park JU, Kim HE, Jeong SH. Fluorine-ion-releasing injectable alginate nanocomposite hydrogel for enhanced bioactivity and antibacterial property. Int J Biol Macromol 2018; 123:866-877. [PMID: 30447366 DOI: 10.1016/j.ijbiomac.2018.11.108] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 10/19/2018] [Accepted: 11/12/2018] [Indexed: 12/17/2022]
Abstract
The creation of a moist environment and promotion of cell proliferation and migration together with antibacterial property are critical to the wound-healing process. Alginate (Alg) is an excellent candidate for injectable wound dressing materials because it can form a gel in a mild environment. Taking advantage of its gelation property, an injectable nano composite hydrogel containing nano-sized (about 90 nm) calcium fluoride (CaF2) particles was developed using in-situ precipitation process. The amount of released fluorine (F-) ion from the nanocomposite hydrogel increased with increasing CaF2 content inside the composite hydrogel and the ions stimulated both the proliferation and migration of fibroblast cells in vitro. The antibacterial property of the composite hydrogel against E. coli and S. aureus was confirmed through colony formation test where the number of bacterial colonies significantly decreased compared to Alg hydrogel. The in vivo results based on a full-thickness wound model showed that the nanocomposite hydrogel effectively enhanced the deposition of the extracellular matrix compared to that of the Alg hydrogel. This study demonstrates the potential of this nanocomposite hydrogel as a bioactive injectable wound-dressing material with the ability to inhibit bacterial growth and stimulate cell proliferation and migration for accelerated wound healing.
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Affiliation(s)
- Da-Yong Shin
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea
| | - Kwang-Hee Cheon
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea
| | - Eun-Ho Song
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea
| | - Yun-Jeong Seong
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea
| | - Ji-Ung Park
- Department of Plastic and Reconstructive Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Hyoun-Ee Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea; Biomedical Implant Convergence Research Center, Advanced Institutes of Convergence Technology, Suwon, South Korea
| | - Seol-Ha Jeong
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea.
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Agrali OB, Yildirim S, Ozener HO, Köse KN, Ozbeyli D, Soluk-Tekkesin M, Kuru L. Evaluation of the Effectiveness of Esterified Hyaluronic Acid Fibers on Bone Regeneration in Rat Calvarial Defects. Biomed Res Int 2018; 2018:3874131. [PMID: 30050929 DOI: 10.1155/2018/3874131] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 06/03/2018] [Indexed: 01/26/2023]
Abstract
Hyaluronic acid (HA) constitutes one of the major components of the extracellular matrix domain in almost all mammals. The aim of this study was to evaluate the regenerative capacity of HA matrix in rat calvarial bone defects and compare with those of different combinations of resorbable collagen membrane (M) and bovine-derived xenograft (G). Twenty-four 3-month-old male Sprague-Dawley rats weighing 200-250 g were included. Control group was created by leaving one defect empty from 2 critical size defects with 5 mm diameter formed in the calvarial bones of 8 rats. In the same rats, the other defect was treated with HA matrix alone. One of the 2 defects formed in other 8 rats was treated with HA+G and the other with HA+M. One of the 2 defects formed in the remaining 8 rats was treated with G+M and the other with HA+G+M. The animals were sacrificed at 4 weeks. Histologic, histomorphometric, and immunohistochemical analyses were performed. Both HA matrix alone and its combinations with G and M supported new bone formation (NBF). However, NBF was significantly greater in G+M and HA+G+M groups compared to control and HA alone (P<0.001). Bone morphogenetic protein-2 was expressed with varying degrees in all groups, without any difference among them. Within the limitations of the present study, HA matrix, used alone or in combination with G and M, did not contribute significantly to bone regeneration in rat calvarial bone defects.
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Anirudhan TS, Mohan AM. Novel pH sensitive dual drug loaded-gelatin methacrylate/methacrylic acid hydrogel for the controlled release of antibiotics. Int J Biol Macromol 2018; 110:167-178. [DOI: 10.1016/j.ijbiomac.2018.01.220] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 01/24/2018] [Accepted: 01/25/2018] [Indexed: 01/19/2023]
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Choi JT, Park SJ, Park JH. Microneedles containing cross-linked hyaluronic acid particulates for control of degradation and swelling behaviour after administration into skin. J Drug Target 2018; 26:884-894. [PMID: 29417843 DOI: 10.1080/1061186x.2018.1435664] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Microneedles (MN) containing cross-linked hyaluronic acid (X-linked HA) particulates were prepared to control the degradation and swelling behaviour after transdermal drug delivery. The X-linked HA particulates were prepared by cross-linking HA chains and then passing the particulates through a sieve. Then, microneedles were prepared by micromolding method. The rheological properties of X-linked HA were studied. The penetration success rate, mechanical failure and dissolution rate of microneedles containing only hyaluronic acid (HA MN) and microneedles containing X-linked HA were compared. The delivery of fluorescein into the skin with X-linked HA MN was also observed using a confocal microscope. The size of the pulverised particulates in water ranged between 29 and 82 μm in diameter. The HA MN and X-linked HA MN were 270 μm in length. X-linked HA MN with fluorescein was inserted to a depth of 90% of the microneedle length successfully. There was no decrease in the penetration success rate for MN with up to 20% content of X-linked HA particulates. X-linked HA MN with up to 20% of particulate content did not change the dissolution time. Delay in degradation of HA, sustained drug release, and swelling behaviour of the skin layer can be obtained by X-linked HA MN.
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Affiliation(s)
- Jun-Tae Choi
- a Department of BioNano Technology and Gachon BioNano Research Institute , Gachon University , Seongnam , Geonggi-do , Korea
| | - Sang-Jin Park
- b Research Institute of Endoderma Co., Ltd , Seongnam , Gyeonggi-do , Korea
| | - Jung-Hwan Park
- a Department of BioNano Technology and Gachon BioNano Research Institute , Gachon University , Seongnam , Geonggi-do , Korea
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Kishan A, Walker T, Sears N, Wilems T, Cosgriff-Hernandez E. Winner of the society for biomaterials student award in the Ph.D. category for the annual meeting of the society for biomaterials, april 11-14, 2018, Atlanta, GA: Development of a bimodal, in situ crosslinking method to achieve multifactor release from el. J Biomed Mater Res A 2018; 106:1155-1164. [DOI: 10.1002/jbm.a.36342] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 01/10/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Alysha Kishan
- Department of Biomedical Engineering; Texas A&M University; College Station Texas 77843
| | - Taneidra Walker
- Department of Biomedical Engineering; The University of Texas at Austin; Austin Texas 78712
| | - Nick Sears
- Department of Biomedical Engineering; Texas A&M University; College Station Texas 77843
| | - Thomas Wilems
- Department of Biomedical Engineering; The University of Texas at Austin; Austin Texas 78712
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Moulisová V, Poveda-Reyes S, Sanmartín-Masiá E, Quintanilla-Sierra L, Salmerón-Sánchez M, Gallego Ferrer G. Hybrid Protein-Glycosaminoglycan Hydrogels Promote Chondrogenic Stem Cell Differentiation. ACS Omega 2017; 2:7609-7620. [PMID: 29214232 PMCID: PMC5709783 DOI: 10.1021/acsomega.7b01303] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 10/13/2017] [Indexed: 05/14/2023]
Abstract
Gelatin-hyaluronic acid (Gel-HA) hybrid hydrogels have been proposed as matrices for tissue engineering because of their ability to mimic the architecture of the extracellular matrix. Our aim was to explore whether tyramine conjugates of Gel and HA, producing injectable hydrogels, are able to induce a particular phenotype of encapsulated human mesenchymal stem cells without the need for growth factors. While pure Gel allowed good cell adhesion without remarkable differentiation and pure HA triggered chondrogenic differentiation without cell spreading, the hybrids, especially those rich in HA, promoted chondrogenic differentiation as well as cell proliferation and adhesion. Secretion of chondrogenic markers such as aggrecan, SOX-9, collagen type II, and glycosaminoglycans was observed, whereas osteogenic, myogenic, and adipogenic markers (RUNX2, sarcomeric myosin, and lipoproteinlipase, respectively) were not present after 2 weeks in the growth medium. The most promising matrix for chondrogenesis seems to be a mixture containing 70% HA and 30% Gel as it is the material with the best mechanical properties from all compositions tested here, and at the same time, it provides an environment suitable for balanced cell adhesion and chondrogenic differentiation. Thus, it represents a system that has a high potential to be used as the injectable material for cartilage regeneration therapies.
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Affiliation(s)
- Vladimíra Moulisová
- Division
of Biomedical Engineering, School of Engineering, University of Glasgow, Rankine Bld, Oakfield Avenue G12 8LT, Glasgow, U.K.
| | - Sara Poveda-Reyes
- Centre
for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Camino de Vera s/n. 46022 Valencia, Spain
| | - Esther Sanmartín-Masiá
- Centre
for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Camino de Vera s/n. 46022 Valencia, Spain
| | - Luis Quintanilla-Sierra
- BIOFORGE
Group, Centro de Investigación Científica y Desarrollo
Tecnológico, Universidad de Valladolid, Campus Miguel Delibes 47011 Valladolid, Spain
- Biomedical
Research Networking Center in Bioengineering, Biomaterials and Nanomedicine
(CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, pabellón
11, planta 0, 28029 Madrid, Spain
| | - Manuel Salmerón-Sánchez
- Division
of Biomedical Engineering, School of Engineering, University of Glasgow, Rankine Bld, Oakfield Avenue G12 8LT, Glasgow, U.K.
| | - Gloria Gallego Ferrer
- Centre
for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Camino de Vera s/n. 46022 Valencia, Spain
- Biomedical
Research Networking Center in Bioengineering, Biomaterials and Nanomedicine
(CIBER-BBN), Instituto de Salud Carlos III, C/Monforte de Lemos 3-5, pabellón
11, planta 0, 28029 Madrid, Spain
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Naahidi S, Jafari M, Logan M, Wang Y, Yuan Y, Bae H, Dixon B, Chen P. Biocompatibility of hydrogel-based scaffolds for tissue engineering applications. Biotechnol Adv 2017; 35:530-44. [DOI: 10.1016/j.biotechadv.2017.05.006] [Citation(s) in RCA: 407] [Impact Index Per Article: 58.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 05/08/2017] [Accepted: 05/22/2017] [Indexed: 12/15/2022]
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Anjum F, Agabalyan NA, Sparks HD, Rosin NL, Kallos MS, Biernaskie J. Biocomposite nanofiber matrices to support ECM remodeling by human dermal progenitors and enhanced wound closure. Sci Rep 2017; 7:10291. [PMID: 28860484 DOI: 10.1038/s41598-017-10735-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 08/14/2017] [Indexed: 01/14/2023] Open
Abstract
Cell-based therapies have recently been the focus of much research to enhance skin wound healing. An important challenge will be to develop vehicles for cell delivery that promote survival and uniform distribution of cells across the wound bed. These systems should be stiff enough to facilitate handling, whilst soft enough to limit damage to newly synthesized wound tissue and minimize patient discomfort. Herein, we developed several novel modifiable nanofibre scaffolds comprised of Poly (ε-caprolactone) (PCL) and gelatin (GE). We asked whether they could be used as a functional receptacle for adult human Skin-derived Precursor Cells (hSKPs) and how naked scaffolds impact endogenous skin wound healing. PCL and GE were electrospun in a single facile solvent to create composite scaffolds and displayed unique morphological and mechanical properties. After seeding with adult hSKPs, deposition of extracellular matrix proteins and sulphated glycosaminoglycans was found to be enhanced in composite grafts. Moreover, composite scaffolds exhibited significantly higher cell proliferation, greater cell spreading and integration within the nanofiber mats. Transplantation of acellular scaffolds into wounds revealed scaffolds exhibited improvement in dermal-epidermal thickness, axonal density and collagen deposition. These results demonstrate that PCL-based nanofiber scaffolds show promise as a cell delivery system for wound healing.
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Lee JB, Ko YG, Cho D, Park WH, Kwon OH. Modification and optimization of electrospun gelatin sheets by electron beam irradiation for soft tissue engineering. Biomater Res 2017; 21:14. [PMID: 28702219 PMCID: PMC5505046 DOI: 10.1186/s40824-017-0100-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 06/22/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Crosslinked gelatin nanofibers are one of the widely used scaffolds for soft tissue engineering. However, modifying the biodegradation rate of chemically crosslinked gelatin is necessary to facilitate cell migration and tissue regeneration. Here, we investigated the optimal electron beam (e-beam) irradiation doses with biodegradation behavior on changes in the molecular weight, morphology, pore structure, and cell proliferation profiles of electrospun nanofibrous gelatin sheets. METHODS The molecular weights of uncrosslinked gelatin nanofibers were measured using gel permeation chromatography. The morphology and pore structure of the gelatin scaffolds were analyzed by scanning electron microscopy and a porosimeter. Biodegradation tests were performed in phosphate-buffered saline solutions for 4 weeks. Cell proliferation and tissue regeneration profiles were examined in fibroblasts using WST-1 assays and hematoxylin and eosin staining. RESULTS Crosslinked gelatin nanofiber sheets exposed to e-beam irradiation over 300 kGy showed approximately 50% weight loss in 2 weeks. Gelatin scaffolds exposed to e-beam irradiation at 100-200 kGy showed significantly increased cell proliferation after 7 days of incubation. CONCLUSIONS These findings suggested that the biodegradation and cell proliferation rates of gelatin nanofiber scaffolds could be optimized by varying e-beam irradiation doses for soft tissue engineering.
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Affiliation(s)
- Jae Baek Lee
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177 Korea
| | - Young-Gwang Ko
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177 Korea
| | - Donghwan Cho
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177 Korea
| | - Won Ho Park
- Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon, 34134 Korea
| | - Oh Hyeong Kwon
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177 Korea
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Kang ML, Jeong SY, Im GI. Hyaluronic Acid Hydrogel Functionalized with Self-Assembled Micelles of Amphiphilic PEGylated Kartogenin for the Treatment of Osteoarthritis. Tissue Eng Part A 2017; 23:630-639. [PMID: 28338415 DOI: 10.1089/ten.tea.2016.0524] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Synthetic hyaluronic acid (HA) containing a covalently integrated drug is capable of releasing therapeutic molecules and is an attractive candidate for the intra-articular treatment of osteoarthritis (OA). Herein, self-assembled PEGylated kartogenin (PEG/KGN) micelles consisting of hydrophilic polyethylene glycol (PEG) and hydrophobic KGN, which has been shown to induce chondrogenesis in human mesenchymal stem cells, were prepared by covalent crosslinking. HA hydrogels containing PEG/KGN micelles (HA/PEG/KGN) were prepared by covalently bonding PEG chains to HA. The physicochemical properties of the HA/PEG/KGN conjugate gels were investigated using Fourier transform infrared spectroscopy, 1H NMR, dynamic light scattering (DLS), and scanning electron microscopy (SEM). HA/PEG/KGN gels exhibited larger micelles in aqueous solution than PEG/KGN. SEM images of PEG/KGN micelles showed a dark core and a bright shell, whereas PEG/KGN micelles covalently integrated into HA had an irregular oval shape. Covalent integration of PEG/KGN micelles in HA hydrogels significantly reduced drug release rates and provided sustained release over a prolonged period of time. HA/PEG/KGN hydrogels were degradable enzymatically by collagenase and hyaluronidase in vitro. Injection of HA/PEG/KGN hydrogels into articular cartilage significantly suppressed the progression of OA in rats compared with free-HA hydrogel injection. These results suggest that the HA/PEG/KGN hydrogels have greater potency than free-HA hydrogels against OA as biodegradable synthetic therapeutics.
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Affiliation(s)
- Mi-Lan Kang
- Department of Orthopedics, Dongguk University Ilsan Hospital , Goyang, Republic of Korea
| | - Se-Young Jeong
- Department of Orthopedics, Dongguk University Ilsan Hospital , Goyang, Republic of Korea
| | - Gun-Il Im
- Department of Orthopedics, Dongguk University Ilsan Hospital , Goyang, Republic of Korea
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Tavakoli J. Physico-mechanical, morphological and biomedical properties of a novel natural wound dressing material. J Mech Behav Biomed Mater 2017; 65:373-82. [DOI: 10.1016/j.jmbbm.2016.09.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 09/02/2016] [Accepted: 09/04/2016] [Indexed: 01/11/2023]
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Yeh MK, Liang YM, Hu CS, Cheng KM, Hung YW, Young JJ, Hong PD. Studies on a novel gelatin sponge: preparation and characterization of cross-linked gelatin scaffolds using 2-chloro-1-methylpyridinium iodide as a zero-length cross-linker. J Biomater Sci Polym Ed 2016; 23:973-90. [PMID: 21549037 DOI: 10.1163/092050611x568430] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We prepared a novel porous gelatin (GEL) sponge which was cross-linked (CL) with a zero-length crosslinker of 2-chloro-1-methylpyridinium iodide (CMPI), and compared CPMI with 1-ethyl-3,3-dimethylaminoproplycarbodiimide (EDC). The ninhydrin assay indicated that the CMPI-CL-GEL sponge had a higher degree of cross-linking than the EDC-CL-GEL sponge at cross-linking saturation. In contrast, the EDC-CL-GEL sponge demonstrated poor water uptake and a much slower enzymatic degradation rate than the CMPI-CL-GEL sponge. Scanning electron microscopy (SEM) images of the gelatin sponge fabricated using a gradient frozen-lyophilization method showed uniformly distributed and interconnected pores. Human 3T3 fibroblasts were successfully seeded onto the scaffolds, and cell proliferation was sustained on all CL-GEL sponges. CMPI-CL-GEL sponges demonstrated significantly increased cell numbers after day 1, and cell numbers steadily rose from day 1 to 12. Meanwhile, the CMPI-CL-GEL sponge had a higher cell number than the EDC-CL-GEL sponge (P < 0.05) by day 4. In vitro studies with 3T3 fibroblasts demonstrated an increased cell viability for those cells grown on sponges cross-linked with CMPI compared to those cross-linked with EDC. SEM images revealed attachment and spreading of cells, the CMPI-CL-GEL sponges had more cells that had elongated, migrated, and formed interconnected networks with neighboring cells.
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Affiliation(s)
- Ming-Kung Yeh
- a Institute of Preventive Medicine, National Defense Medical Center, PO Box 90048-700, Sanhsia, Taipei 237, Taiwan, ROC
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23
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Poveda-Reyes S, Moulisova V, Sanmartín-Masiá E, Quintanilla-Sierra L, Salmerón-Sánchez M, Ferrer GG. Gelatin-Hyaluronic Acid Hydrogels with Tuned Stiffness to Counterbalance Cellular Forces and Promote Cell Differentiation. Macromol Biosci 2016; 16:1311-24. [DOI: 10.1002/mabi.201500469] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/29/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Sara Poveda-Reyes
- Center for Biomaterials and Tissue Engineering (CBIT); Universitat Politècnica de València; Valencia 46022
| | - Vladimira Moulisova
- Division of Biomedical Engineering; School of Engineering; University of Glasgow; Glasgow G12 8QQ UK
| | - Esther Sanmartín-Masiá
- Center for Biomaterials and Tissue Engineering (CBIT); Universitat Politècnica de València; Valencia 46022
| | - Luis Quintanilla-Sierra
- BIOFORGE Group; Centro de Investigación Científica y Desarrollo Tecnológico; Campus de Miguel Delibes; Universidad de Valladolid; Valladolid 47011 Spain
| | - Manuel Salmerón-Sánchez
- Division of Biomedical Engineering; School of Engineering; University of Glasgow; Glasgow G12 8QQ UK
| | - Gloria Gallego Ferrer
- Center for Biomaterials and Tissue Engineering (CBIT); Universitat Politècnica de València; Valencia 46022
- Biomedical Research Networking Center in Bioengineering; Biomaterials and Nanomedicine (CIBER-BBN); Valencia 46022 Spain
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24
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Zecheru T, Său C, Lăzăroaie C, Zaharia C, Rotariu T, Stănescu PO. Novel formulations of ballistic gelatin. 1. Rheological properties. Forensic Sci Int 2016; 263:204-210. [PMID: 27139038 DOI: 10.1016/j.forsciint.2016.04.023] [Citation(s) in RCA: 2] [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: 12/28/2015] [Revised: 03/24/2016] [Accepted: 04/18/2016] [Indexed: 10/21/2022]
Abstract
Ballistic gelatin is the simulant of the human body during field tests in forensics and other related fields, due to its physical and mechanical similarities to human trunk and organs. Since the ballistic gelatin used in present has important issues to overcome, an alternative approach is the use of gelatin-polymer composites, where a key factor is the insertion of biocompatible materials, which replicate accurately the human tissues. In order to be able to obtain an improved material in terms of mechanical performances by an easy industrial-scale technology, before the verification of the ballistic parameters by shooting in agreement with military standards, one of the best and cheapest solutions is to perform a thorough check of their rheological properties, in standard conditions.
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Affiliation(s)
- Teodora Zecheru
- Scientific Research Center for CBRN Defense and Ecology, 225 Olteniţei Sos, 041309 Bucharest, Romania
| | - Ciprian Său
- Scientific Research Center for CBRN Defense and Ecology, 225 Olteniţei Sos, 041309 Bucharest, Romania
| | - Claudiu Lăzăroaie
- Scientific Research Center for CBRN Defense and Ecology, 225 Olteniţei Sos, 041309 Bucharest, Romania
| | - Cătălin Zaharia
- Polytechnic University of Bucharest, Faculty of Applied Chemistry and Materials Science, Advanced Polymer Materials Group, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania
| | - Traian Rotariu
- Scientific Research Center for CBRN Defense and Ecology, 225 Olteniţei Sos, 041309 Bucharest, Romania; Military Technical Academy, 39-49 Bvd. George Cosbuc, 050141 Bucharest, Romania.
| | - Paul-Octavian Stănescu
- Polytechnic University of Bucharest, Faculty of Applied Chemistry and Materials Science, Advanced Polymer Materials Group, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania
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25
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Arpaçay P, Türkan U. Development of antibiotic-loaded silk fibroin/hyaluronic acid polyelectrolyte film coated CoCrMo alloy. ACTA ACUST UNITED AC 2016; 61:463-474. [DOI: 10.1515/bmt-2015-0061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 09/30/2015] [Indexed: 12/16/2022]
Abstract
AbstractBacteria related infections are still a major problem for the implant materials. Such infections have occurred in nearly 3% of hip and knee replacements resulting in failure of device. There are two main approaches for inhibiting the bacterial adhesion to the surface. These involve bactericidal substances and anti-adhesive coatings. In this study, the efficiency of antibiotic-loaded silk fibroin/hyaluronic acid polyelectrolyte film coated CoCrMo alloy, prepared by means of complex coacervate and layer by layer techniques, was investigated. A medical grade CoCrMo was coated with variable number of silk fibroin/hyaluronic acid up to 14 layers at room temperature. The morphological evolution during and after formation of the crystal structure on the coating layer, the resulting surface roughness, and the corresponding alterations in the coating layer thicknesses were thoroughly studied using various analytical techniques, including attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). As a result, only 10 layers of silk fibroin/hyaluronic acid complex coacervate films were found to convey the general characteristics of the mixture of silk I and II, while layer by layer coated samples exhibited the mixture of silk I and II. Moreover, regardless of the preparation method applied, the surface roughness and the coating layer thicknesses were determined to increase with the increasing number of layers. The antibacterial test results suggested that the samples loaded with antibiotic successfully induced a bactericidal resistance against
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26
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Ghaleh H, Abbasi F, Alizadeh M, Khoshfetrat AB. Mimicking the quasi-random assembly of protein fibers in the dermis by freeze-drying method. Materials Science and Engineering: C 2015; 49:807-815. [DOI: 10.1016/j.msec.2015.01.071] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 12/22/2014] [Accepted: 01/23/2015] [Indexed: 11/28/2022]
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27
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Affiliation(s)
- A. Shanti Krishna
- Laboratory for Polymer Analysis, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology; Thiruvananthapuram Kerala 695012 India
| | - C. Radhakumary
- Laboratory for Polymer Analysis, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology; Thiruvananthapuram Kerala 695012 India
| | - K. Sreenivasan
- Laboratory for Polymer Analysis, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology; Thiruvananthapuram Kerala 695012 India
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28
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Kishan AP, Nezarati RM, Radzicki CM, Renfro AL, Robinson JL, Whitely ME, Cosgriff-Hernandez EM. In situ crosslinking of electrospun gelatin for improved fiber morphology retention and tunable degradation. J Mater Chem B 2015; 3:7930-7938. [DOI: 10.1039/c5tb00937e] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In situ crosslinking provides a method to crosslink gelatin during electrospinning enabling tunable degradation rates and displaying improved fiber morphology retention after implantation.
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Affiliation(s)
- A. P. Kishan
- Department of Biomedical Engineering
- Texas A&M University
- College Station
- Texas 77843-3120
- USA
| | - R. M. Nezarati
- Department of Biomedical Engineering
- Texas A&M University
- College Station
- Texas 77843-3120
- USA
| | - C. M. Radzicki
- Department of Biomedical Engineering
- Texas A&M University
- College Station
- Texas 77843-3120
- USA
| | - A. L. Renfro
- Department of Biomedical Engineering
- Texas A&M University
- College Station
- Texas 77843-3120
- USA
| | - J. L. Robinson
- Department of Biomedical Engineering
- Texas A&M University
- College Station
- Texas 77843-3120
- USA
| | - M. E. Whitely
- Department of Biomedical Engineering
- Texas A&M University
- College Station
- Texas 77843-3120
- USA
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Tomczyńska-Mleko M, Brenner T, Nishinari K, Mleko S, Kramek A. Rheological and Thermal Behavior of Mixed Gelatin/Konjac Glucomannan Gels. J Texture Stud 2014. [DOI: 10.1111/jtxs.12079] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marta Tomczyńska-Mleko
- Institute of Plant Genetics, Breeding and Biotechnology; University of Life Sciences; Lublin Skromna Poland
| | - Tom Brenner
- Graduate School of Human Life Science; Osaka City University; Sumiyoshi Osaka 5588585 Japan
| | - Katsuyoshi Nishinari
- Graduate School of Human Life Science; Osaka City University; Sumiyoshi Osaka 5588585 Japan
- Department of Food and Pharmaceutical Engineering; Hubei University of Technology; Wuhan Hubei 430068 China
| | - Stanisław Mleko
- Department of Milk Technology and Hydrocolloids; University of Life Sciences; Lublin Skromna Poland
| | - Aneta Kramek
- Institute of Plant Genetics, Breeding and Biotechnology; University of Life Sciences; Lublin Skromna Poland
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Szente L, Puskás I, Csabai K, Fenyvesi É. Supramolecular Proteoglycan Aggregate Mimics: Cyclodextrin-Assisted Biodegradable Polymer Assemblies for Electrostatic-Driven Drug Delivery. Chem Asian J 2014; 9:1365-72. [DOI: 10.1002/asia.201301391] [Citation(s) in RCA: 17] [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] [Received: 10/16/2013] [Revised: 01/14/2013] [Indexed: 11/09/2022]
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31
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Wen C, Lu L, Li X. An interpenetrating network biohydrogel of gelatin and gellan gum by using a combination of enzymatic and ionic crosslinking approaches. POLYM INT 2014. [DOI: 10.1002/pi.4683] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Cai Wen
- School of Chemistry and Chemical Engineering; Southeast University; Nanjing 210018 China
| | - Lingling Lu
- School of Chemistry and Chemical Engineering; Southeast University; Nanjing 210018 China
| | - Xinsong Li
- School of Chemistry and Chemical Engineering; Southeast University; Nanjing 210018 China
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Abstract
Abstract
Biomaterials originate from natural substances and are widely used in medicine. Although they have to satisfy many conditions to be useful for treatment, more and more research is carried out with new types of biomaterials that can help replace various tissues such as tendons and bones. Chitosan is a very promising material, revealing unique features, which makes it useful for veterinary medicine - antimicrobial activity, biocompatibility, biodegradability. It is also known as good scaffold material, especially when combined with other polymers. This article describes chitosan as a biomaterial and tissue engineering scaffold with possible applications in veterinary medicine
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La Gatta A, Schiraldi C, Papa A, D’Agostino A, Cammarota M, De Rosa A, De Rosa M. Hyaluronan scaffolds via diglycidyl ether crosslinking: Toward improvements in composition and performance. Carbohydr Polym 2013; 96:536-44. [DOI: 10.1016/j.carbpol.2013.04.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 03/26/2013] [Accepted: 04/10/2013] [Indexed: 10/26/2022]
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Chang N, Jhung Y, Yao C, Yeh M. Hydrophilic Gelatin and Hyaluronic Acid-Treated PLGA Scaffolds for Cartilage Tissue Engineering. J Appl Biomater Funct Mater 2013; 11:45-52. [DOI: 10.5301/jabfm.2012.9253] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2011] [Indexed: 11/20/2022] Open
Abstract
Tissue engineering provides a new strategy for repairing damaged cartilage. Surface and mechanical properties of scaffolds play important roles in inducing cell growth. Aim The aim of this study was to fabricate and characterize PLGA and gelatin/hyaluronic acid-treated PLGA (PLGA-GH) sponge scaffolds for articular cartilage tissue engineering. Methods The PLGA-GH scaffolds were cross-linked with gelatin and hyaluronic acid. Primary chondrocytes isolated from porcine articular cartilages were used to assess cell compatibility. The characteristic PLGA-GH scaffold was higher in water uptake ratio and degradation rate within 42 days than the PLGA scaffold. Results The mean compressive moduli of PLGA and PLGA-GH scaffolds were 1.72±0.50 MPa and 1.86±0.90 MPa, respectively. The cell attachment ratio, proliferation, and extracellular matrix secretion on PLGA-GH scaffolds are superior to those of PLGA scaffolds. Conclusions In our study, PLGA-GH scaffolds exhibited improvements in cell biocompatibility, cell proliferation, extracellular matrix synthesis, and appropriate mechanical and structural properties for potential engineering cartilage applications.
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Yan S, Zhang Q, Wang J, Liu Y, Lu S, Li M, Kaplan DL. Silk fibroin/chondroitin sulfate/hyaluronic acid ternary scaffolds for dermal tissue reconstruction. Acta Biomater 2013; 9:6771-82. [PMID: 23419553 DOI: 10.1016/j.actbio.2013.02.016] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Revised: 02/07/2013] [Accepted: 02/08/2013] [Indexed: 01/13/2023]
Abstract
The fabrication of new dermal substitutes providing mechanical support and cellular cues is urgently needed in dermal reconstruction. Silk fibroin (SF)/chondroitin sulfate (CS)/hyaluronic acid (HA) ternary scaffolds (95-248μm in pore diameter, 88-93% in porosity) were prepared by freeze-drying. By the incorporation of CS and HA with the SF solution, the chemical potential and quantity of free water around ice crystals could be controlled to form smaller pores in the SF/CS/HA ternary scaffold main pores and improve scaffold equilibrium swelling. This feature offers benefits for cell adhesion, survival and proliferation. In vivo SF, SF/HA and SF/CS/HA (80/5/15) scaffolds as dermal equivalents were implanted onto dorsal full-thickness wounds of Sprague-Dawley rats to evaluate wound healing. Compared to SF and SF/HA scaffolds, the SF/CS/HA (80/5/15) scaffolds promoted dermis regeneration, related to improved angiogenesis and collagen deposition. Further, vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF) and basic fibroblast growth factor (bFGF) expression in the SF/CS/HA (80/5/15) groups were investigated by immunohistochemistry to assess the mechanisms involved in the stimulation of secretion of VEGF, PDGF and bFGF and accumulation of these growth factors related to accelerated wound process. These new three-dimensional ternary scaffolds offer potential for dermal tissue regeneration.
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Alizadeh M, Abbasi F, Khoshfetrat AB, Ghaleh H. Microstructure and characteristic properties of gelatin/chitosan scaffold prepared by a combined freeze-drying/leaching method. Mater Sci Eng C Mater Biol Appl 2013; 33:3958-67. [PMID: 23910302 DOI: 10.1016/j.msec.2013.05.039] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 05/04/2013] [Accepted: 05/16/2013] [Indexed: 11/25/2022]
Abstract
A combined freeze-drying and particulate leaching method for scaffold synthesis showed an improvement in the horizontal microstructure of the gelatin/chitosan scaffolds. Type and concentration of the cross-linking agent, freezing temperature, concentration of the polymeric solution and gelatin/chitosan weight ratio were the variables affecting the scaffold properties. Assessment of the tensile properties of the scaffolds revealed that for a scaffold with 50% chitosan, glutaraldehyde, as a cross-linking agent, created much tighter polymeric network compared to N,N-(3-dimethylaminopropyl)-N'-ethyl carbodiimide (EDC). However, in the case of gelatin scaffolds, EDC was identified as the stronger cross-linker. Compressive behavior of the scaffolds satisfied formulations obtained from the theoretical modeling of the low-density, elastomeric foams. The investigation of the scaffold degradation indicated that the increase in the mechanical strength of the scaffolds would not always reduce their degradation rate.
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Affiliation(s)
- M Alizadeh
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
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Chen S, Bhushan B. Nanomechanical and nanotribological characterization of two synthetic skins with and without skin cream treatment using atomic force microscopy. J Colloid Interface Sci 2013; 398:247-54. [DOI: 10.1016/j.jcis.2013.02.026] [Citation(s) in RCA: 19] [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] [Received: 01/29/2013] [Accepted: 02/13/2013] [Indexed: 10/27/2022]
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Lucarotti C, Oddo CM, Vitiello N, Carrozza MC. Synthetic and bio-artificial tactile sensing: a review. Sensors (Basel) 2013; 13:1435-66. [PMID: 23348032 DOI: 10.3390/s130201435] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 12/31/2012] [Accepted: 01/11/2013] [Indexed: 01/09/2023]
Abstract
This paper reviews the state of the art of artificial tactile sensing, with a particular focus on bio-hybrid and fully-biological approaches. To this aim, the study of physiology of the human sense of touch and of the coding mechanisms of tactile information is a significant starting point, which is briefly explored in this review. Then, the progress towards the development of an artificial sense of touch are investigated. Artificial tactile sensing is analysed with respect to the possible approaches to fabricate the outer interface layer: synthetic skin versus bio-artificial skin. With particular respect to the synthetic skin approach, a brief overview is provided on various technologies and transduction principles that can be integrated beneath the skin layer. Then, the main focus moves to approaches characterized by the use of bio-artificial skin as an outer layer of the artificial sensory system. Within this design solution for the skin, bio-hybrid and fully-biological tactile sensing systems are thoroughly presented: while significant results have been reported for the development of tissue engineered skins, the development of mechanotransduction units and their integration is a recent trend that is still lagging behind, therefore requiring research efforts and investments. In the last part of the paper, application domains and perspectives of the reviewed tactile sensing technologies are discussed.
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Liu C, Zhang Z, Liu X, Ni X, Li J. Gelatin-based hydrogels with β-cyclodextrin as a dual functional component for enhanced drug loading and controlled release. RSC Adv 2013. [DOI: 10.1039/c3ra42532k] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ko CL, Tien YC, Wang JC, Chen WC. Characterization of controlled highly porous hyaluronan/gelatin cross-linking sponges for tissue engineering. J Mech Behav Biomed Mater 2012; 14:227-38. [DOI: 10.1016/j.jmbbm.2012.06.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Revised: 06/01/2012] [Accepted: 06/05/2012] [Indexed: 12/28/2022]
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Vichasilp C, Nakagawa K, Sookwong P, Higuchi O, Kimura F, Miyazawa T. A novel gelatin crosslinking method retards release of mulberry 1-deoxynojirimycin providing a prolonged hypoglycaemic effect. Food Chem 2012; 134:1823-30. [DOI: 10.1016/j.foodchem.2012.03.086] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 03/16/2012] [Accepted: 03/21/2012] [Indexed: 11/26/2022]
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WANG TZUWEI, WU HSICHIN, HUANG YICHAU, SUN JUISHENG, LIN FENGHUEI. PREPARATION AND EVALUATION OF GAG-INCORPORATED SKIN SUBSTITUTE: AN IN VITRO STUDY. Biomed Eng Appl Basis Commun 2012. [DOI: 10.4015/s1016237206000257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A bi-layered gelatin-C6S-HA membrane with different pore sizes was prepared by freeze-drying at different temperatures - 20°C and -196°C, respectively Glycosaminoglycans (GAGs) were incorporated within the gelatin matrices to mimic the dermal composition and to create an appropriate environment for cell growth. The gelatin-C6S-HA membrane was cross-linked by 1-ethyl-3(3-dimethylaminopropryl) carbodiimide (EDC) to resist rapidly biodegradation by matrix enzymes. In this study, the lower layer of the sponge was inoculated with dermal fibroblasts for dermis development and as the feeder layer for epidermal keratinocytes. The upper layer was seeded with keratinocytes for epidermalization. After cultured for a period of time in air-liquid interface, the upper layer was developed into an epidermis structure with stratified epidermal layers. The lower part was developed into dermis-like structure synthesized by dermal fibroblasts surrounding with its own secreted extracellular matrix. In brief, the bi-layered skin equivalent with biological dermal analog and epidermal analog would be a suitable tool for autologous skin equivalent tissue engineering.
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Affiliation(s)
- TZU-WEI WANG
- Institute of Biomedical Engineering, College of Medicine and Engineering, National Taiwan University, Taiwan
| | - HSI-CHIN WU
- Institute of Biomedical Engineering, College of Medicine and Engineering, National Taiwan University, Taiwan
| | - YI-CHAU HUANG
- Institute of Biomedical Engineering, College of Medicine and Engineering, National Taiwan University, Taiwan
| | - JUI-SHENG SUN
- Institute of Rehabilitation Science and Technology, National Yang-Ming University, Taiwan
- Department of Orthopedic Surgery, Taipei City Hospital- Yang-Ming Branch, Taipei, Taiwan
| | - FENG-HUEI LIN
- Institute of Biomedical Engineering, College of Medicine and Engineering, National Taiwan University, Taiwan
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Abstract
The purpose of this study was to investigate the attachment and proliferation of cells on selective laser-sintered (SLS) polycaprolactone (PCL) scaffolds coated with gelatin for cartilage tissue engineering using chondrocytes isolated from the articular cartilage of swine. Scaffolds without modification were used as control groups. Cell proliferation was measured by cell count 1, 3 and 5 days after cell seeding into the scaffolds. The biocompatibility of the scaffold was examined by scanning electron microscopy (SEM). The PCL scaffolds coated with gelatin had higher hydrophilicity. The results provided a useful strategy for modifying the microenvironments to increase cell attachment, growth and the formation of extracellular matrix on scaffolds for cartilage tissue engineering.
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Affiliation(s)
- CHIH-HAO CHEN
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan, R.O.C
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 333, Taiwan, R.O.C
| | - JYH-PING CHEN
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 333, Taiwan, R.O.C
| | - MING-YIH LEE
- Graduate Institute of Medical Mechatronics, Chang Gung University, Taoyuan 333, Taiwan, R.O.C
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Hong SR, Chong MS, Lee SB, Lee YM, Song KW, Park MH, Hong SH. Biocompatibility and biodegradation of cross-linked gelatin/hyaluronic acid sponge in rat subcutaneous tissue. Journal of Biomaterials Science, Polymer Edition 2012; 15:201-14. [PMID: 15109098 DOI: 10.1163/156856204322793584] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A gelatin/hyaluronic acid (GH) sponge has been fabricated by freeze-drying and cross-linking. The GH sponge was insoluble when cross-linked with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide. The morphologies of sponges were investigated using a field emission scanning electron microscope. The porosity of the GH sponge increased with hyaluronic acid content. The GH sponge was biodegradable, as evidenced by implantation in Wistar rat subcutaneous connective tissue. Fibroblasts infiltrated into the sponge matrix, and regenerated collagen in the matrix to a level of 25% by 15 days after surgery. The GH73 sponge induced an acute inflammatory response compared with the GH91 sponge. This inflammatory response could have been stimulated by the presence of hyaluronic acid up to Day 10, as it decreased afterwards. The C-reactive protein of blood samples also indicated the same result. The blood tests and histological results show that GH sponges have good biocompatibility and low antigenicity for tissue engineering scaffolds.
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Affiliation(s)
- Sung Ran Hong
- School of Chemical Engineering, College of Engineering, Hanyang University, Seongdong-ku, Seoul, 133-791, South Korea
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Young JJ, Cheng KM, Tsou TL, Liu HW, Wang HJ. Preparation of cross-linked hyaluronic acid film using 2-chloro-1-methylpyridinium iodide or water-soluble 1-ethyl-(3,3-dimethylaminopropyl)carbodiimide. Journal of Biomaterials Science, Polymer Edition 2012; 15:767-80. [PMID: 15255525 DOI: 10.1163/156856204774196153] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In order to obtain much slower biodegradable films, which are often required for biomedical applications, we have developed a series of studies on heterogeneous cross-linking of hyaluronic acid (HA) films by using 2-chloro-1-methylpyridinium iodide (CMPI) or 1-ethyl-(3,3-dimethylaminopropyl)carbodiimide (EDC) as cross-linking reagents. From the in vitro degradation rate, we found that EDC cross-linked HA films completely dissolved in PBS at 37 degrees C during the period of 4-6 days. However, CMPI cross-linked HA films showed only a low percentage of weight loss over 30 days. This phenomenon could be explained from the mechanism of reaction between carboxyl group of HA and EDC. The latter reacted with carboxyl group to form an unstable intermediate O-acylurea, which showed a relatively low reactivity and quickly rearranged to form a stable N-acylurea. Thus, most of the EDC-activated carboxyl groups in HA were chemically transferred into N-acylurea or left as unreactive O-acylurea, and only a few of cross-linking bonds were formed between HA. On the other hand, the intermediate obtained from the reaction between carboxyl group and CMPI showed a relatively high reactivity and reacted with the hydroxyl group of the same and/or different molecules of HA to form an inter- and intramolecular esterification. Apparently, CMPI cross-linked HA films have a much higher cross-linking density and constructed a more rigid three-dimensional network. Therefore, it produced HA films, which dramatically increased its enzymatic stability in aqueous solution of hyaluronidase. The obtained results from elemental analyses, FT-IR spectra and NMR spectra also indicate that acylurea groups were introduced into EDC-cross-linked HA films.
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Affiliation(s)
- Jenn-Jong Young
- Institute of Preventive Medicine, National Defense Medical Center, PO Box 90048-700, Sanhsia, Taipei 237, Taiwan, ROC.
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Liu H, Mao J, Yao K, Yang G, Cui L, Cao Y. A study on a chitosan-gelatin-hyaluronic acid scaffold as artificial skin in vitro and its tissue engineering applications. Journal of Biomaterials Science, Polymer Edition 2012; 15:25-40. [PMID: 15027841 DOI: 10.1163/156856204322752219] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Chitosan-gelatin-hyaluronic acid scaffolds for tissue regeneration were fabricated by freezing and lyophilizing methods. The scaffolds showed a higher water uptake and retention abilities than chitosan-gelatin scaffolds did. Fibroblasts cultured in chitosan-gelatin-hyaluronic acid scaffolds grew and proliferated well, and they exhibited a strong viability. Keratinocytes were co-cultured with fibroblasts in chitosan-gelatin-hyaluronic acid scaffolds to construct an artificial bilayer skin in vitro. The artificial skin obtained was flexible and had good mechanical properties. The data from this study suggested that chitosan-gelatin-hyaluronic acid scaffolds are suitable for preparing a bilayer skin substitute.
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Affiliation(s)
- Haifeng Liu
- Research Institute of Polymer Materials, Tianjin University, Tianjin 300072, Peoples Republic of China
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Gatta AL, Schiraldi C, D'Agostino A, Papa A, Rosa MD. Properties of newly-synthesized cationic semi-interpenetrating hydrogels containing either hyaluronan or chondroitin sulfate in a methacrylic matrix. J Funct Biomater 2012; 3:225-38. [PMID: 24955528 DOI: 10.3390/jfb3020225] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 02/23/2012] [Accepted: 03/12/2012] [Indexed: 11/24/2022] Open
Abstract
Extracellular matrix components such as hyaluronan (HA) and chondroitin sulfate (CS) were combined with a synthetic matrix of p(HEMA-co-METAC) (poly(2-hydroxyethylmethacrylate-co-2-methacryloxyethyltrimethylammonium)) at 1% and 2% w/w concentration following a previously developed procedure. The resulting semi-interpenetrating hydrogels were able to extensively swell in water incrementing their dry weight up to 13 fold depending on the glycosamminoglycan content and nature. When swollen in physiological solution, materials water uptake significantly decreased, and the differences in swelling capability became negligible. In physiological conditions, HA was released from the materials up to 38%w/w while CS was found almost fully retained. Materials were not cytotoxic and a biological evaluation, performed using 3T3 fibroblasts and an original time lapse videomicroscopy station, revealed their appropriateness for cell adhesion and proliferation. Slight differences observed in the morphology of adherent cells suggested a better performance of CS containing hydrogels.
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48
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Bhushan B. Nanotribological and nanomechanical properties of skin with and without cream treatment using atomic force microscopy and nanoindentation. J Colloid Interface Sci 2012; 367:1-33. [DOI: 10.1016/j.jcis.2011.10.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 10/06/2011] [Accepted: 10/07/2011] [Indexed: 11/16/2022]
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49
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Abstract
The study was carried out to develop procedure for determining concentration of formaldehyde to be used for crosslinking of gelatin in the presence of drugs having amino groups. Gentamicin sulfate was used as a drug candidate due to its high content of amino acids. Gelatin crosslinking is accelerated by aldehyde-containing compounds and inhibited by amino group-containing compounds. The major modifications from already existing procedures are that the trinitrobenzenesulphonic acid (TNBS) reaction is used to detect e-amino groups of Type A gelatin in the presence of formaldehyde and further it is supported with colorimetric analysis of free formaldehyde content using a chromotropic acid regent. Since formaldehyde crosslinks amino groups, the TNBS assay can be effectively utilized for determination of complete crosslinking of gelatin with analysis of free amino acid content in crosslinked formulation. The effect of the presence of amino groups on gelatin crosslinking was estimated in the presence of gentamicin sulfate. The ε-amino content of uncrosslinked Type A gelatin was found to be 28.6 mol/gelatin molecule of 1000 residues and in case of crosslinked gelatin it varies with varying concentration of formaldehyde. The procedure stated here should be applicable to a broad range of drugs containing amino groups which are used along with gelatin or other proteinaceous materials which are applicable after crosslinking with formaldehyde.
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Affiliation(s)
- Rn Kale
- Department of Pharm. Sciences, C.U. Shah College of Pharmacy, SNDT Women's University, Juhu Tara Road, Santacruz (W), Mumbai - 49, India
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Zhang F, Zhang H, Zuo B, Zhang X. Preparation and characterization of electrospun silk fibroin nanofiber with addition of 1-ethyl-3-(3-dimethylarainopropyl) carbodiimide. Polym Sci Ser A 2011. [DOI: 10.1134/s0965545x1105004x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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