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Karamanlioglu M, Yesilkir-Baydar S. Characterization of gelatin-based wound dressing biomaterials containing increasing coconut oil concentrations. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:16-44. [PMID: 37773094 DOI: 10.1080/09205063.2023.2265624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 09/22/2023] [Indexed: 09/30/2023]
Abstract
This study determined the influence and ideal ratios of various coconut oil (CO) amounts in gelatin (G) based-films as wound dressings since there are limited comparative studies to evaluate the sole effect of increasing CO on protein-based biomaterials. Homogenous films at G:CO ratio of 4:0,4:2,4:3,4:4 (w:w) corresponding to CO-0, CO-2, CO-3, CO-4, respectively, were obtained using solution casting. SEM showed CO caused rougher surfaces decreasing mechanical strength. However, no pores were observed in CO-4 due to bigger clusters of oil improving stretchability compared to CO-3; and durability since aging of CO-4 was >10% lower than CO-0 in aqueous media. FTIR showed triglycerides' band only in CO films with increasing amplitude. Moreover, amide-I of CO-2 was involved in more hydrogen bonding, therefore, CO-2 had the highest melt-like transition temperatures (Tmax) at ∼163 °C while others' were at ∼133 °C; and had more ideal mechanical properties among CO films. XTT showed that increased CO improved 3T3 cell viability as CO-0 significantly decreased viability at 10,50,75,100 μg/mL (p < 0.05), whereas CO-2 and CO-3 within 5-75 μg/mL and CO-4 within 5-100 μg/mL range increased viability ≥100% suggesting proliferation. All CO samples at 25 μg/mL stimulated 3T3 cell migration in Scratch Assay indicating wound healing. CO amounts mainly improved thermal and healing properties of gelatin-based biomaterial. CO-2 was more thermally stable and CO-4 had better influence on cell viability and wound healing than CO-0. Therefore, increased CO ratios, specifically 4:2 and 4:4, G:CO (w:w), in gelatin-based films can be ideal candidates for wound dressing materials.
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Affiliation(s)
| | - Serap Yesilkir-Baydar
- Department of Biomedical Engineering, Istanbul Gelisim University, Istanbul, Turkey
- Life Sciences and Biomedical Engineering Application and Research Center, Istanbul Gelisim University, Istanbul, Turkey
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Hu B, Gao J, Lu Y, Wang Y. Applications of Degradable Hydrogels in Novel Approaches to Disease Treatment and New Modes of Drug Delivery. Pharmaceutics 2023; 15:2370. [PMID: 37896132 PMCID: PMC10610366 DOI: 10.3390/pharmaceutics15102370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/03/2023] [Accepted: 09/07/2023] [Indexed: 10/29/2023] Open
Abstract
Hydrogels are particularly suitable materials for loading drug delivery agents; their high water content provides a biocompatible environment for most biomolecules, and their cross-linked nature protects the loaded agents from damage. During delivery, the delivered substance usually needs to be released gradually over time, which can be achieved by degradable cross-linked chains. In recent years, biodegradable hydrogels have become a promising technology in new methods of disease treatment and drug delivery methods due to their many advantageous properties. This review briefly discusses the degradation mechanisms of different types of biodegradable hydrogel systems and introduces the specific applications of degradable hydrogels in several new methods of disease treatment and drug delivery methods.
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Affiliation(s)
- Bo Hu
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; (B.H.); (J.G.)
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic, Ministry of Education of China, Beijing Laboratory of Biomedical Materials, Beijing 100069, China
| | - Jinyuan Gao
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; (B.H.); (J.G.)
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic, Ministry of Education of China, Beijing Laboratory of Biomedical Materials, Beijing 100069, China
| | - Yu Lu
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; (B.H.); (J.G.)
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic, Ministry of Education of China, Beijing Laboratory of Biomedical Materials, Beijing 100069, China
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Yuji Wang
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; (B.H.); (J.G.)
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic, Ministry of Education of China, Beijing Laboratory of Biomedical Materials, Beijing 100069, China
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
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Sabab A, Vediappan RS, Finnie J, McAdam CJ, Jukes A, Vreugde S, Wormald PJ. Efficacy and Safety of Novel Beta-Chitin Patches as Haemostat in Rat Vascular and Neurosurgical Model. Front Surg 2022; 9:830364. [PMID: 35465434 PMCID: PMC9023757 DOI: 10.3389/fsurg.2022.830364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/04/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundIntraoperative hemorrhage is a major cause of poor post-operative outcome. Beta-chitin patch has previously been found to be an effective haemostat, but whether modifying the patch can improve its efficacy and safety, remains unknown. In this study, beta-chitin patches were modified using polyethylene oxide, Pluronic-F127 (Chi/F127), calcium (Chi/20%Ca), increased thickness (Chi/Thick) or polyphosphate (Chi/PP).ObjectiveUsing rat (Wistar Albino; 8–10 weeks old) vascular and neurosurgical models, this project investigated and compared the efficacy and safety of beta-chitin patches with gauze, Surgicel and FloSeal.MethodsNinety rats underwent a standardized femoral artery injury and were randomized to receive either beta-chitin patches, gauze, Surgicel or FloSeal. The bleeding time and total blood loss was measured. For the neurosurgical model, forty-four rats underwent a standardized cortical injury and randomization to a treatment group. Following a 48 h recovery period, their brains were collected for histopathological examination.ResultsThe mean bleeding time with Chitin (120.8 s) and Chi/PP (117.3 s) was ~60 s lower than Chi/F127, Chi/20%Ca and Chi/Thick (p < 0.05). Chitin and Chi/PP had a significantly lower bleeding time than FloSeal (174.2 s) (p < 0.05), but not Surgicel (172.7 s). Gauze (400 s) had a significantly higher bleeding time compared to all other groups (p < 0.05). There were no significant differences in the total blood loss between the groups. Histopathological examination of brains found no adverse inflammatory reaction to any of the haemostatic compounds.ConclusionChi/PP had superior haemostatic efficacy compared to Surgicel and FloSeal, but not compared to non-modified beta-chitin patch. All of the haemostats were equally safe.
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Affiliation(s)
- Ahad Sabab
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Rajan Sundaresan Vediappan
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, SA, Australia
| | - John Finnie
- Discipline of Anatomy and Pathology, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - C. John McAdam
- Department of Chemistry, University of Otago, Dunedin, New Zealand
| | - Alistair Jukes
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Sarah Vreugde
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Peter-John Wormald
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, SA, Australia
- *Correspondence: Peter-John Wormald
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Qu W, Xiong T, Wang B, Li Y, Zhang X. The modification of pomegranate polyphenol with ultrasound improves mechanical, antioxidant, and antibacterial properties of tuna skin collagen-chitosan film. ULTRASONICS SONOCHEMISTRY 2022; 85:105992. [PMID: 35385812 PMCID: PMC8980343 DOI: 10.1016/j.ultsonch.2022.105992] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/23/2022] [Accepted: 03/26/2022] [Indexed: 05/21/2023]
Abstract
To produce an edible film with high mechanical and physicochemical properties, Tuna skin collagen-chitosan (TSC-CTS) composite films were prepared by incorporating ultrasound (UT) and pomegranate polyphenols including gallic acid (GA), tannic acid (TA), and ellagic acid (EA), respectively. The tensile strength and the DPPH scavenging activity of the GA-UT-TSC-CTS film (ultrasound frequency of 28 ± 0.5 kHz, power of 100 W/L, sweep frequency cycle of 100 ms, duty ratio of 77% and time of 10 min; GA concentration of 1.0 g/L and reaction time of 10 min) were increased by 47.03% and 24.16 folds, respectively compared to the control (TSC-CTS film). Meanwhile, light transmittance and water vapor permeability of the GA-UT-TSC-CTS film were decreased by 29.26% and 15.70%, respectively. These positive modification results were attributed to the altered structure during the film formation process, which were verified by Fourier transform infrared spectroscopy (FTIR), circular dichroism (CD), X-ray diffraction (XRD), and thermogravimetry results. Moreover, the GA-UT-TSC-CTS film possessed moderate thermal stability and color indexes and improved antibacterial activity. The antibacterial effect of the film against Bacillus subtilis was the highest, followed by Escherichia coli, Listeria monocytogenes, and Staphylococcus aureus. Overall, the combination modification of gallic acid and ultrasound was an efficient modification method to improve the mechanical, antioxidant, and antibacterial properties of edible TSC-CTS films.
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Affiliation(s)
- Wenjuan Qu
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road Zhenjiang, Jiangsu 212013, China.
| | - Ting Xiong
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road Zhenjiang, Jiangsu 212013, China
| | - Bo Wang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road Zhenjiang, Jiangsu 212013, China
| | - Yuhan Li
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road Zhenjiang, Jiangsu 212013, China
| | - Xinxin Zhang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road Zhenjiang, Jiangsu 212013, China
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Sabab A, Liu S, Javadiyan S, McAdam CJ, Hanton LR, Jukes A, Vreugde S, Wormald PJ. The effect of chemical and structural modifiers on the haemostatic process and cytotoxicity of the beta-chitin patch. Sci Rep 2021; 11:18577. [PMID: 34535704 PMCID: PMC8448852 DOI: 10.1038/s41598-021-97781-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 08/30/2021] [Indexed: 12/03/2022] Open
Abstract
Beta-chitin patch has previously been proven to be an effective haemostat, but whether modifying the patch affects its efficacy and safety, remains unanswered. In this study, the patch was modified using polyethylene oxide, Pluronic-F127, calcium, increased thickness or polyphosphate, and their effect on the process of haemostasis and cytotoxicity was tested and compared with standard-of-care, Surgicel and FloSeal. Whole blood collected from volunteers was applied to the patches to test their whole blood clotting and thrombin generation capacities, whilst platelet isolates were used to test their platelet aggregation ability. The fluid absorption capacity of the patches was tested using simulated body fluid. Cytotoxicity of the patches was tested using AlamarBlue assays and PC12 cells and the results were compared with the standard-of-care. In this study, beta-chitin patch modifications failed to improve its whole blood clotting, platelet aggregation and thrombin generation capacity. Compared to non-modified patch, modifications with polyethylene oxide or calcium reduced platelet aggregation and thrombin generation capacity, while increasing the thickness or adding polyphosphate decreased platelet aggregation capacity. The cytotoxicity assays demonstrated that the beta-chitin patches were non-toxic to cells. In vivo research is required to evaluate the safety and efficacy of the beta-chitin patches in a clinical setting.
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Affiliation(s)
- Ahad Sabab
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, Australia.
| | - Sha Liu
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, Australia
| | - Shari Javadiyan
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, Australia
| | - C John McAdam
- Department of Chemistry, University of Otago, Dunedin, New Zealand
| | - Lyall R Hanton
- Department of Chemistry, University of Otago, Dunedin, New Zealand
| | - Alistair Jukes
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, Australia
| | - Sarah Vreugde
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, Australia
| | - Peter-John Wormald
- Department of Surgery-Otorhinolaryngology, Head and Neck Surgery, University of Adelaide, Adelaide, Australia
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Seidi F, Khodadadi Yazdi M, Jouyandeh M, Dominic M, Naeim H, Nezhad MN, Bagheri B, Habibzadeh S, Zarrintaj P, Saeb MR, Mozafari M. Chitosan-based blends for biomedical applications. Int J Biol Macromol 2021; 183:1818-1850. [PMID: 33971230 DOI: 10.1016/j.ijbiomac.2021.05.003] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 04/27/2021] [Accepted: 05/02/2021] [Indexed: 10/21/2022]
Abstract
Polysaccharides are the most abundant naturally available carbohydrate polymers; composed of monosaccharide units covalently connected together. Chitosan is the most widely used polysaccharides because of its exceptional biocompatibility, mucoadhesion, and chemical versatility. However, it suffers from a few drawbacks, e.g. poor mechanical properties and antibacterial activity for biomedical applications. Blending chitosan with natural or synthetic polymers may not merely improve its physicochemical and mechanical properties, but may also improve its bioactivity-induced properties. This review paper summarizes progress in chitosan blends with biodegradable polymers and polysaccharides and their biomedical applications. Blends of chitosan with alginate, starch, cellulose, pectin and dextran and their applications were particularly addressed. The critical and challenging aspects as well as the future ahead of the use of chitosan-based blends were eventually enlightened.
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Affiliation(s)
- Farzad Seidi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, Nanjing 210037, China
| | | | - Maryam Jouyandeh
- Center of Excellence in Electrochemistry, University of Tehran, Tehran, Iran
| | - Midhun Dominic
- Department of Chemistry, Sacred Heart College (Autonomous), Kochi, Kerala 682013, India
| | - Haleh Naeim
- Faculty of Chemical Engineering, Urmia University of Technology, Urmia, Iran
| | | | - Babak Bagheri
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Sajjad Habibzadeh
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Payam Zarrintaj
- School of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, USA
| | - Mohammad Reza Saeb
- Center of Excellence in Electrochemistry, University of Tehran, Tehran, Iran.
| | - Masoud Mozafari
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.
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Singh S, Dutt D, Kaur P, Singh H, Mishra NC. Microfibrous paper scaffold for tissue engineering application. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:1091-1106. [DOI: 10.1080/09205063.2020.1740965] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sandhya Singh
- Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Dharam Dutt
- Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Parminder Kaur
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Hemant Singh
- Department of Polymer & Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Narayan Chand Mishra
- Department of Polymer & Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
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Sumathra M, Rajan M. Pulsed Electrodeposition of HAP/CPG-BSA/CUR Nanocomposite on Titanium Metal for Potential Bone Regeneration. ACS APPLIED BIO MATERIALS 2019; 2:4756-4768. [DOI: 10.1021/acsabm.9b00494] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Murugan Sumathra
- Biomaterials in Medicinal Chemistry Laboratory, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - Mariappan Rajan
- Biomaterials in Medicinal Chemistry Laboratory, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
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Sadhasivam B, Ravishankar K, Desingh R, Subramaniyam R, Dhamodharan R. Biocompatible Porous Scaffolds of Chitosan/Poly(EG- ran-PG) Blends with Tailored Pore Size and Nontoxic to Mesenchymal Stem Cells: Preparation by Controlled Evaporation from Aqueous Acetic Acid Solution. ACS OMEGA 2018; 3:10286-10295. [PMID: 31459159 PMCID: PMC6645406 DOI: 10.1021/acsomega.8b01101] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 08/16/2018] [Indexed: 05/13/2023]
Abstract
The preparation of porous films (average size variation from 1 to 32 μm) of a 1:1 blend of chitosan with poly(EG-ran-PG) by the controlled evaporation of water from a 2 wt % aqueous acetic acid solution is reported. Interestingly, the blend exhibited porosity that could be tailored from 1 to 32 μm with the temperature of preparation of the blend film. The powder X-ray diffraction, Fourier transform infrared, and differential scanning calorimetry analyses of the films suggested the formation of partially miscible blends. Temperature-induced phase separation of the blend appears to be the mechanism of pore formation. The tensile strength, cytotoxicity, and biocompatibility of the blend films for the growth of mesenchymal stem cells were assessed vis-a-vis chitosan. The 1:1 blend film was observed to lack cytotoxicity and was also viable for the growth of mesenchymal stem cells. The tensile properties of the 1:1 blend were superior to those of the chitosan film. The simple preparation of porous, nontoxic, and biocompatible films could find use as a scaffold in the growth of tissue, and especially bone tissue, in wound dressing, and in filtration if a better control over pore size is achieved.
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Affiliation(s)
| | | | - Rajpreeth Desingh
- Chemical
Biology and Nanobiotechnology Laboratory, Anna University, MIT Campus, Chrompet, Chennai 600 044, India
| | - Rajalakshmi Subramaniyam
- Chemical
Biology and Nanobiotechnology Laboratory, Anna University, MIT Campus, Chrompet, Chennai 600 044, India
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Natarajan J, Madras G, Chatterjee K. Tailoring the degradation rate and release kinetics from poly(galactitol sebacate) by blending with chitosan, alginate or ethyl cellulose. Int J Biol Macromol 2016; 93:1591-1602. [DOI: 10.1016/j.ijbiomac.2016.02.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/30/2016] [Accepted: 02/12/2016] [Indexed: 11/25/2022]
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Mahdizadeh Barzoki Z, Emam-Djomeh Z, Mortazavian E, Akbar Moosavi-Movahedi A, Rafiee Tehrani M. Formulation, in vitro evaluation and kinetic analysis of chitosan-gelatin bilayer muco-adhesive buccal patches of insulin nanoparticles. J Microencapsul 2016; 33:613-624. [PMID: 27606816 DOI: 10.1080/02652048.2016.1234513] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The present study was performed to optimise the formulation of a muco-adhesive buccal patch for insulin nanoparticles (NPs) delivery. Insulin NPs were synthesised by an ionic gelation technique using N-di methyl ethyl chitosan cysteine (DMEC-Cys) as permeation enhancer biopolymer, tripolyphosphate (TPP) and insulin. Buccal patches were developed by solvent-casting technique using chitosan and gelatine as muco-adhesive polymers. Optimised patches were embedded with 3 mg of insulin-loaded NPs with a homogeneous distribution of NPs in the muco-adhesive matrix, which displayed adequate physico-mechanical properties. The drug release characteristics, release mechanism and kinetics were investigated. Data fitting to Peppas equation with a correlation coefficient indicated that the mechanism of drug release followed an anomalous transport that means drug release was afforded through drug diffusion along with polymer erosion. In vitro drug release, release kinetics, physical and mechanical studies for all patch formulations reflected the ideal characteristics of this buccal patch for the delivery of insulin NPs.
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Affiliation(s)
- Zahra Mahdizadeh Barzoki
- a Transfer Phenomena Laboratory (TPL), Department of Food Science, Technology and Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources , University of Tehran , Karadj , Iran
| | - Zahra Emam-Djomeh
- a Transfer Phenomena Laboratory (TPL), Department of Food Science, Technology and Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources , University of Tehran , Karadj , Iran.,b Center of Excellence for Application of Modern Technologies for Producing Functional Foods and Drinks , Tehran , Iran
| | - Elaheh Mortazavian
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | | | - M Rafiee Tehrani
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
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Khazaei A, Khazaei M, Rahmati S. A green method for the synthesis of gelatin/pectin stabilized palladium nano-particles as efficient heterogeneous catalyst for solvent-free Mizoroki–Heck reaction. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2014.12.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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13
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Preparation and Bioactivity Properties of a Novel Composite Membrane of Fructose Mediatedβ-Tricalcium Pyrophosphate/(Polyethylene Glycol/Chitosan) for Guided Tissue Regeneration. INT J POLYM SCI 2015. [DOI: 10.1155/2015/494950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
A novel composite membrane ofβ-tricalcium pyrophosphate (β-TCP) and fructose- (F-) mediated chitosan/poly(ethylene glycol) (CS/PEG) was prepared by thermally induced phase separation technique. The prepared composite membranes were characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The mechanical property, swelling, degradation, and cytotoxicity of the composite membranes were evaluated in vitro with respect to its potential for use as biodegradable guided tissue regeneration (GTR) membrane. In vitro degradation tests showed the composite membrane with a controllable degradation rate when changing theβ-TCP content. The incorporation ofβ-TCP granules also caused a significant enhancement of tensile strength. Whenβ-TCP content is controlled to 50 wt%, homogeneous composite membranes with well mechanical property and enzymatic degradation rate can be obtained. Cytotoxicity assay demonstrates that the composite membranes were nontoxic and had very good cell compatibility. Most importantly, the release of calcium ions and glucosamine from the composite membranes was proved to increase the cell proliferation of NIH3T3. The results of this study have indicated that this novel F-β-TCP/CS/PEG composite can be a suitable material for GTR applications.
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Leones R, Rodrigues L, Fernandes M, Ferreira R, Cesarino I, Pawlicka A, Carlos L, de Zea Bermudez V, Silva M. Electro-optical properties of the DNA-Eu3+ bio-membranes. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2013.08.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ozcelik B, Brown KD, Blencowe A, Daniell M, Stevens GW, Qiao GG. Ultrathin chitosan-poly(ethylene glycol) hydrogel films for corneal tissue engineering. Acta Biomater 2013; 9:6594-605. [PMID: 23376126 DOI: 10.1016/j.actbio.2013.01.020] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 11/16/2012] [Accepted: 01/17/2013] [Indexed: 10/27/2022]
Abstract
Due to the high demand for donor corneas and their low supply, autologous corneal endothelial cell (CEC) culture and transplantation for treatment of corneal endothelial dysfunction would be highly desirable. Many studies have shown the possibility of culturing CECs in vitro, but lack potential robust substrates for transplantation into the cornea. In this study, we investigate the properties of novel ultrathin chitosan-poly(ethylene glycol) (PEG) hydrogel films (CPHFs) for corneal tissue engineering applications. Cross-linking of chitosan films with diepoxy-PEG and cystamine was employed to prepare ~50 μm (hydrated) hydrogel films. Through variation of the PEG content (1.5-5.9 wt.%) it was possible to tailor the CPHFs to have tensile strains and ultimate stresses identical to or greater than those of human corneal tissue while retaining similar tensile moduli. Light transmission measurements in the visible spectrum (400-700 nm) revealed that the films were >95% optically transparent, above that of the human cornea (maximum ~90%), whilst in vitro degradation studies with lysozyme revealed that the CPHFs maintained the biodegradable characteristics of chitosan. Cell culture studies demonstrated the ability of the CPHFs to support the attachment and proliferation of sheep CECs. Ex vivo surgical trials on ovine eyes demonstrated that the CPHFs displayed excellent characteristics for physical manipulation and implantation purposes. The ultrathin CPHFs display desirable mechanical, optical and degradation properties whilst allowing attachment and proliferation of ovine CECs, and as such are attractive candidates for the regeneration and transplantation of CECs, as well as other corneal tissue engineering applications.
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Kumar S, Dutta P, Koh J. A physico-chemical and biological study of novel chitosan–chloroquinoline derivative for biomedical applications. Int J Biol Macromol 2011; 49:356-61. [DOI: 10.1016/j.ijbiomac.2011.05.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Revised: 05/04/2011] [Accepted: 05/18/2011] [Indexed: 10/18/2022]
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Firouzabadi H, Iranpoor N, Ghaderi A. Solvent-free Mizoroki–Heck reaction catalyzed by palladium nano-particles deposited on gelatin as the reductant, ligand and the non-toxic and degradable natural product support. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcata.2011.07.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Van Vlierberghe S, Dubruel P, Schacht E. Biopolymer-based hydrogels as scaffolds for tissue engineering applications: a review. Biomacromolecules 2011; 12:1387-408. [PMID: 21388145 DOI: 10.1021/bm200083n] [Citation(s) in RCA: 1068] [Impact Index Per Article: 82.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hydrogels are physically or chemically cross-linked polymer networks that are able to absorb large amounts of water. They can be classified into different categories depending on various parameters including the preparation method, the charge, and the mechanical and structural characteristics. The present review aims to give an overview of hydrogels based on natural polymers and their various applications in the field of tissue engineering. In a first part, relevant parameters describing different hydrogel properties and the strategies applied to finetune these characteristics will be described. In a second part, an important class of biopolymers that possess thermosensitive properties (UCST or LCST behavior) will be discussed. Another part of the review will be devoted to the application of cryogels. Finally, the most relevant biopolymer-based hydrogel systems, the different methods of preparation, as well as an in depth overview of the applications in the field of tissue engineering will be given.
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Affiliation(s)
- S Van Vlierberghe
- Polymer Chemistry & Biomaterials Research Group, Ghent University, Ghent, Belgium
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Firouzabadi H, Iranpoor N, Ghaderi A. Gelatin as a bioorganic reductant, ligand and support for palladium nanoparticles. Application as a catalyst for ligand- and amine-free Sonogashira–Hagihara reaction. Org Biomol Chem 2011; 9:865-71. [DOI: 10.1039/c0ob00253d] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Liu Y, Chen W, Kim HI. Antibacterial activity of pH-sensitive genipin cross-linked chitosan/poly(ethylene glycol)/silver nanocomposites. POLYM ADVAN TECHNOL 2010. [DOI: 10.1002/pat.1818] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Huang Y, Yu H, Guo L, Huang Q. Structure and self-assembly properties of a new chitosan-based amphiphile. J Phys Chem B 2010; 114:7719-26. [PMID: 20481638 PMCID: PMC3226067 DOI: 10.1021/jp9122216] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new chitosan-based amphiphile, octanoyl-chitosan-polyethylene glycol monomethyl ether (acylChitoMPEG), has been prepared using both hydrophobic octanoyl and hydrophilic polyethylene glycol monomethyl ether (MPEG) substitutions. The success of synthesis was confirmed by Fourier transform infrared (FT-IR) and (1)H NMR spectroscopy. The synthesized acylChitoMPEG exhibited good solubility in either aqueous solution or common organic solvents such as ethanol, acetone, and CHCl(3). The self-aggregation behavior of acylChitoMPEG in solutions was studied by a combination of pyrene fluorescence technique, dynamic light scattering, atomic force microscopy, and small-angle X-ray scattering (SAXS). The critical aggregation concentration (CAC) and hydrodynamic diameter were found to be 0.066 mg/mL and 24.4 nm, respectively. SAXS results suggested a coiled structure of the triple helical acylChitoMPEG backbone with the hydrophobic moieties hiding in the center of the backbone, and the hydrophilic MPEG chains surrounding the acylChitoMPEG backbone in a random Gaussian chain conformation. Cytotoxicity results showed that acylChitoMPEG exhibited negligible cytotoxicity even at concentrations as high as 1.0 mg/mL. All results implied that acylChitoMPEG has the potential to be used for biological or medical applications.
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Affiliation(s)
| | | | | | - Qingrong Huang
- Author to whom correspondence should be addressed. Tel: 732-932-7193. Fax: 732-932-6776.
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Meng X, Tian F, Yang J, He CN, Xing N, Li F. Chitosan and alginate polyelectrolyte complex membranes and their properties for wound dressing application. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:1751-1759. [PMID: 20101440 DOI: 10.1007/s10856-010-3996-6] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Accepted: 01/08/2010] [Indexed: 05/28/2023]
Abstract
This study investigated the characteristics and drug release properties of membranes of chitosan and alginate prepared via a casting/solvent evaporation technique. Membranes of chitosan and alginate with silver sulfadiazine as model drug incorporated in different concentrations and different membrane compositions were obtained. The polyblend solution viscosity reached to the highest at the composition polyblends of (1:1). This chitosan/alginate membranes showed pH- and ionic strength-dependent water uptake properties and had the WVTR rang from 442 to 618 g/m(2)/day. The maximum value of the dry membrane of breaking strength was 52.16 MPa and the maximum value of the wet membrane breaking elongation was 46.28%. The results of controlled release studies showed that the silver sulfadiazine release rate was the fastest when the alginate content was 50%. On the basis of the requisite physical properties, the chitosan-alginate PEC membrane can be considered for potential wound dressing or controlled release application.
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Affiliation(s)
- Xin Meng
- Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin, 300161, People's Republic of China
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