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Tighsazzadeh M, Boateng J. Matrix hyaluronic acid and bilayer poly-hydroxyethyl methacrylate-hyaluronic acid films as potential ocular drug delivery platforms. Int J Biol Macromol 2024; 260:129496. [PMID: 38244742 DOI: 10.1016/j.ijbiomac.2024.129496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/01/2024] [Accepted: 01/12/2024] [Indexed: 01/22/2024]
Abstract
This study aimed to design hydrogel based films comprising hyaluronic acid (HA) to overcome limitations of currently used eye drops. Timolol-loaded crosslinked (X2) HA-based and bilayer (B2) (pHEMA/PVP-HA-based layers) films were designed and characterized. The films were transparent (UV, visual observation) with crosslinked (<80 %) films showing lower light transmittance than bilayer (>80 %) films. X2 showed significantly higher swelling capacity, tensile strength and elastic modulus (5491.6 %, 1539.8 Nmm-2, 1777.2 mPa) than B2 (1905.0 %, 170.0N mm-2, 67.3 mPa) respectively. However, X2 showed lower cumulative drug released and adhesive force (27.3 %, 6.2 N) than B2 (57.5 %, 8.6 N). UV sterilization did not significantly alter physical properties, while SEM and IR microscopy showed smooth surface morphology and homogeneous drug distribution. Timolol permeation (EpiCorneal™/porcine cornea) depended on the film matrix with erodible films showing similar permeation to commercial eyedrops. Drug permeation for porcine cornea (X2 = 549.0.2, B2 = 312.1 μgcm-2 h-1) was significantly faster than EpiCorneal™ (X2 = 55.2, B2 = 37.6 μgcm-2 h-1), but with a linear correlation between them. All the selected optimized films showed acceptable compatibility (MTT assay) with both HeLa cells and EpiCorneal™. In conclusion, crosslinked and bilayer HA based films showed ideal characteristics suitable for potential ocular drug delivery, though further work is required to further optimize these properties and confirm their efficacy including in vivo tests.
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Affiliation(s)
- Mohammad Tighsazzadeh
- School of Science, Faculty of Engineering and Science, University of Greenwich, Medway, Kent ME4 4TB, UK
| | - Joshua Boateng
- School of Science, Faculty of Engineering and Science, University of Greenwich, Medway, Kent ME4 4TB, UK.
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2
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Hadinugroho W, Martodihardjo S, Fudholi A, Riyanto S, Prasetyo J. Hydroxypropyl Methylcellulose as Hydrogel Matrix and Citric Acid-Locust Bean Gum as Negative Matrix for Controlled Release Tablet. ACS OMEGA 2023; 8:7767-7778. [PMID: 36873007 PMCID: PMC9979311 DOI: 10.1021/acsomega.2c07432] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Purpose: This study aimed at determining the optimum concentration of hydroxypropyl methylcellulose (HPMC) as hydrogel matrix and citric acid-locust bean gum (CA-LBG) as negative matrix for controlled release tablet formulation. In addition, the study was to determine the effect of CA-LBG and HPMC. CA-LBG accelerates the disintegration of tablets into granules so that the HPMC granule matrix swells immediately and controls drug release. The advantage of this method is that the tablets do not produce large HPMC gel lumps without drug (ghost matrix) but form HPMC gel granules, which can be rapidly degraded after all of the drug is released. Methods : The experiment followed the simplex lattice design to obtain the optimum tablet formula with CA-LBG and HPMC concentrations as optimization factors. Tablet production by the wet granulation method and ketoprofen is the model of the active ingredient. The kinetics of ketoprofen release was studied using several models. Results : Based on the coefficients of each polynomial equation that HPMC and CA-LBG increased the value of angle of repose (29.91:27.87), tap index (18.99:18.77), hardness (13.60:13.32), friability (0.41:0.73), and release of ketoprofen (52.48:99.44). Interaction of HPMC and CA-LBG increased the value of angle of repose (3.25), tap index (5.64), and hardness (2.42). Interaction of HPMC and CA-LBG too decreased the friability value (-1.10) and release of ketoprofen (-26.36). The Higuchi, Korsmeyer-Peppas, and Hixson-Crowell model is the kinetics of eight experimental tablet formulas. Conclusions : The optimum concentrations of HPMC and CA-LBG for controlled release tablets are 32.97 and 17.03%, respectively. HPMC, CA-LBG, and a combination of both affect the physical quality of tablet and tablet mass. CA-LBG is a new excipient candidate that can control drug release from tablets by the matrix disintegration mechanism on the tablet.
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Affiliation(s)
- Wuryanto Hadinugroho
- Faculty
of Pharmacy, Widya Mandala Surabaya Catholic
University, Kalisari Selatan No. 1, Pakuwon City, Surabaya 60112, Indonesia
| | - Suwaldi Martodihardjo
- Faculty
of Pharmacy, Gadjah Mada University, Sekip Utara, Yogyakarta 55281, Indonesia
| | - Achmad Fudholi
- Faculty
of Pharmacy, Gadjah Mada University, Sekip Utara, Yogyakarta 55281, Indonesia
| | - Sugeng Riyanto
- Faculty
of Pharmacy, Gadjah Mada University, Sekip Utara, Yogyakarta 55281, Indonesia
| | - Jefri Prasetyo
- Faculty
of Pharmacy, Widya Mandala Surabaya Catholic
University, Kalisari Selatan No. 1, Pakuwon City, Surabaya 60112, Indonesia
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3
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Allogeneic Bone Impregnated with Biodegradable Depot Delivery Systems for the Local Treatment of Joint Replacement Infections: An In Vitro Study. Molecules 2022; 27:molecules27196487. [PMID: 36235024 PMCID: PMC9571001 DOI: 10.3390/molecules27196487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/21/2022] [Accepted: 09/27/2022] [Indexed: 11/17/2022] Open
Abstract
Although progress is evident in the effective treatment of joint replacement-related infections, it still remains a serious issue in orthopedics. As an example, the local application of antibiotics-impregnated bone grafts supplies the high drug levels without systemic side effects. However, antibiotics in the powder or solution form could be a risk for local toxicity and do not allow sustained drug release. The present study evaluated the use of an antibiotic gel, a water-in-oil emulsion, and a PLGA microparticulate solid dispersion as depot delivery systems impregnating bone grafts for the treatment of joint replacement-related infections. The results of rheological and bioadhesive tests revealed the suitability of these formulations for the impregnation of bone grafts. Moreover, no negative effect on proliferation and viability of bone marrow mesenchymal stem cells was detected. An ex vivo dissolution test of vancomycin hydrochloride and gentamicin sulphate from the impregnated bone grafts showed a reduced burst and prolonged drug release. The PLGA-based formulation proved to be particularly promising, as one-day burst release drugs was only 15% followed with sustained antibiotics release with zero-order kinetics. The results of this study will be the basis for the development of a new product in the Tissue Section of the University Hospital for the treatment of bone defects and infections of joint replacements.
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Structure and Properties of Reactively Extruded Opaque Post-Consumer Recycled PET. Polymers (Basel) 2021; 13:polym13203531. [PMID: 34685290 PMCID: PMC8540998 DOI: 10.3390/polym13203531] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/07/2021] [Accepted: 10/10/2021] [Indexed: 12/03/2022] Open
Abstract
The recyclability of opaque PET, which contains TiO2 nanoparticles, has not been as well-studied as that of transparent PET. The objective of this work is to recycle post-consumer opaque PET through reactive extrusion with Joncryl. The effect of the reactive extrusion process on the molecular structure and on the thermal/mechanical/rheological properties of recycling post-consumer opaque PET (r-PET) has been analyzed. A 1% w/w Joncryl addition caused a moderate increase in the molecular weight. A moderate increase in chain length could not explain a decrease in the overall crystallization rate. This result is probably due to the presence of branches interrupting the crystallizable sequences in reactive extruded r-PET (REX-r-PET). A rheological investigation performed by SAOS/LAOS/elongational studies detected important structural modifications in REX-r-PET with respect to linear r-PET or a reference virgin PET. REX-r-PET is characterized by a slow relaxation process with enlarged elastic behaviors that are characteristic of a long-chain branched material. The mechanical properties of REX-r-PET increased because of the addition of the chain extender without a significant loss of elongation at the break. The reactive extrusion process is a suitable way to recycle opaque PET into a material with enhanced rheological properties (thanks to the production of a chain extension and long-chain branches) with mechanical properties that are comparable to those of a typical virgin PET sample.
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5
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Hadinugroho W, Martodihardjo S, Fudholi A, Riyanto S. Preparation of Citric Acid-Locust Bean Gum (CA-LBG) for the Disintegrating Agent of Tablet Dosage Forms. J Pharm Innov 2021. [DOI: 10.1007/s12247-021-09591-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Wu S, Bian C, Li X, Chen M, Yang J, Jin Y, Shen Y, Cheng L. Controlled release of triamcinolone from an episcleral micro film delivery system for open-globe eye injuries and proliferative vitreoretinopathy. J Control Release 2021; 333:76-90. [PMID: 33771623 DOI: 10.1016/j.jconrel.2021.03.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 03/05/2021] [Accepted: 03/16/2021] [Indexed: 11/16/2022]
Abstract
Open globe trauma is the major cause for single eye blindness that stem from subsequent proliferative vitreoretinopathy (PVR). Though biomaterials and tissue engineering have significantly advanced drug delivery and management of human diseases, currently there is no effective drug formulation or device to pharmacologically mitigate PVR formation after open-globe eye trauma. This highlighted the challenge we are facing to bring the technology from bench to bedside. The current study reported an engineered episcleral drug film using biodegradable material, Poly(L-lactide)-co-poly(ɛ-caprolactone), and triamcinolone acetonide (TA) as a model drug. The film can be conveniently sized into any shape to fit the configuration of the eye globe trauma and easily installed onto the ruptured sclera during primary trauma repair surgery. The film allows therapeutic TA to slow release for at least 6 months without toxicity and demonstrated a significant benefit to reduce the odds of developing severe PVR by 5.7 times when compared with a no-drug film control on a rabbit trauma PVR model. Our results suggested this micro episcleral drug film as promising drug delivery carrier for the targeted treatment of various unwanted retinal proliferation diseases.
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Affiliation(s)
- Shaoqun Wu
- School of Ophthalmology and Optometry, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China
| | - Chengying Bian
- School of Ophthalmology and Optometry, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China
| | - Xiaoli Li
- School of Ophthalmology and Optometry, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China
| | - Miao Chen
- School of Ophthalmology and Optometry, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China
| | - Jie Yang
- School of Ophthalmology and Optometry, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China
| | - Yuanhui Jin
- School of Ophthalmology and Optometry, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China
| | - Yu Shen
- School of Ophthalmology and Optometry, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China
| | - Lingyun Cheng
- School of Ophthalmology and Optometry, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, Zhejiang 325027, China.
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7
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A study on the physical, mechanical, thermal properties and soil biodegradation of HDPE blended with PBS/HDPE-g-MA. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03623-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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8
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Bhati P, Ahuja R, Srivastava A, Pankaj, Singh S, Vashisth P, Bhatnagar N. Physicochemical characterization and mechanical performance analysis of biaxially oriented PLA/PCL tubular scaffolds for intended stent application. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03795-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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9
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Farr N, Pashneh‐Tala S, Stehling N, Claeyssens F, Green N, Rodenburg C. Characterizing Cross‐Linking Within Polymeric Biomaterials in the SEM by Secondary Electron Hyperspectral Imaging. Macromol Rapid Commun 2019; 41:e1900484. [DOI: 10.1002/marc.201900484] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/29/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Nicholas Farr
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Samand Pashneh‐Tala
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Nicola Stehling
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Frederik Claeyssens
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Nicola Green
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
- INSIGNEO Institute for In Silico MedicineThe Pam Liversidge BuildingSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Cornelia Rodenburg
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
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10
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Valainis D, Dondl P, Foehr P, Burgkart R, Kalkhof S, Duda GN, van Griensven M, Poh PSP. Integrated additive design and manufacturing approach for the bioengineering of bone scaffolds for favorable mechanical and biological properties. Biomed Mater 2019; 14:065002. [DOI: 10.1088/1748-605x/ab38c6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Development and evaluation of performance characteristics of timolol-loaded composite ocular films as potential delivery platforms for treatment of glaucoma. Int J Pharm 2019; 566:111-125. [DOI: 10.1016/j.ijpharm.2019.05.059] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 04/24/2019] [Accepted: 05/22/2019] [Indexed: 02/04/2023]
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12
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Rychter M, Milanowski B, Grześkowiak BF, Jarek M, Kempiński M, Coy EL, Borysiak S, Baranowska-Korczyc A, Lulek J. Cilostazol-loaded electrospun three-dimensional systems for potential cardiovascular application: Effect of fibers hydrophilization on drug release, and cytocompatibility. J Colloid Interface Sci 2019; 536:310-327. [DOI: 10.1016/j.jcis.2018.10.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/09/2018] [Accepted: 10/10/2018] [Indexed: 01/06/2023]
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13
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Tian G, Zhu G, Ren T, Liu Y, Wei K, Liu YX. The effects of PCL diol molecular weight on properties of shape memory poly(ε-caprolactone) networks. J Appl Polym Sci 2018. [DOI: 10.1002/app.47055] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- G. Tian
- Department of Applied Chemistry; Northwestern Polytechnical University, 127 West Friendship Road; Xi'an 710072 China
| | - G. Zhu
- Department of Applied Chemistry; Northwestern Polytechnical University, 127 West Friendship Road; Xi'an 710072 China
| | - T. Ren
- Department of Applied Chemistry; Northwestern Polytechnical University, 127 West Friendship Road; Xi'an 710072 China
| | - Y. Liu
- Department of Applied Chemistry; Northwestern Polytechnical University, 127 West Friendship Road; Xi'an 710072 China
| | - K. Wei
- Key Laboratory of Ministry of Transportation Road Structure and Material; Chang'an University; Xi'an 710064 China
| | - Y. X. Liu
- Xi'an Tie Yi High School, 120 East Friendship Road; Xi'an 710054 China
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14
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Radhouani H, Gonçalves C, Maia FR, Oliveira JM, Reis RL. Kefiran biopolymer: Evaluation of its physicochemical and biological properties. J BIOACT COMPAT POL 2018. [DOI: 10.1177/0883911518793914] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Kefiran, an exopolysaccharide produced by lactic acid bacteria, has received a great interest due to a variety of health claims. In this study, we aim to investigate the physicochemical and biological properties of Kefiran polysaccharide extracted from Portuguese kefir grains. The kefir growth rate was about 56% (w/w) at room temperature and the kefir pH after 24 h was about 4.6. The obtained yield of Kefiran polysaccharide extracted from the kefir grains was about 4.26% (w/w). The Kefiran structural features were showed in the 1H nuclear magnetic resonance spectrum. The bands observed in the infrared spectrum confirmed that the Kefiran had a β-configuration; and the X-ray photoelectron spectroscopy analysis confirmed the structure and composition of Kefiran and revealed a C/O atomic ratio of 1.46. Moreover, Kefiran showed an average molecular weight (Mw) of 534 kDa and a number-average molecular weight (Mn) of 357 kDa. Regarding the rheological data obtained, Kefiran showed an interesting adhesive performance accompanied by a pseudoplastic behavior, and the extrusion force of Kefiran was 1 N. Furthermore, Kefiran exhibited a higher resistance to hyaluronidase degradation than hyaluronic acid. Finally, Kefiran showed a lack of cytotoxic response through its ability to support metabolic activity and proliferation of L929 cells, and had no effect on these cells’ morphology. Our research suggested that Kefiran polymer has attractive and interesting properties for a wide range of biomedical applications, such as tissue engineering and regenerative medicine.
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Affiliation(s)
- Hajer Radhouani
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B’s–PT Government Associate Laboratory, Braga, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, University of Minho, Guimarães, Portugal
| | - Cristiana Gonçalves
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B’s–PT Government Associate Laboratory, Braga, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, University of Minho, Guimarães, Portugal
| | - Fátima R Maia
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B’s–PT Government Associate Laboratory, Braga, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, University of Minho, Guimarães, Portugal
| | - Joaquim M Oliveira
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B’s–PT Government Associate Laboratory, Braga, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, University of Minho, Guimarães, Portugal
| | - Rui L Reis
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B’s–PT Government Associate Laboratory, Braga, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, University of Minho, Guimarães, Portugal
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15
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Madhavan K, Frid MG, Hunter K, Shandas R, Stenmark KR, Park D. Development of an electrospun biomimetic polyurea scaffold suitable for vascular grafting. J Biomed Mater Res B Appl Biomater 2018; 106:278-290. [PMID: 28130878 PMCID: PMC6080858 DOI: 10.1002/jbm.b.33853] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 11/15/2016] [Accepted: 01/01/2017] [Indexed: 12/19/2022]
Abstract
The optimization of biomechanical and biochemical properties of a vascular graft to render properties relevant to physiological environments is a major challenge today. These critical properties of a vascular graft not only regulate its stability and integrity, but also control invasion of cells for scaffold remodeling permitting its integration with native tissue. In this work, we have synthesized a biomimetic scaffold by electrospinning a blend of a polyurea, poly(serinol hexamethylene urea) (PSHU), and, a polyester, poly-ε-caprolactone (PCL). Mechanical properties of the scaffold were varied by varying polymer blending ratio and electrospinning flow rate. Mechanical characterization revealed that scaffolds with lower PSHU content relative to PCL content resulted in elasticity close to native mammalian arteries. We also found that increasing electrospinning flow rates also increased the elasticity of the matrix. Optimization of elasticity generated scaffolds that enabled vascular smooth muscle cells (SMCs) to adhere, grow and maintain a SMC phenotype. The 30/70 scaffold also underwent slower degradation than scaffolds with higher PSHU content, thereby, providing the best option for in vivo remodeling. Further, Gly-Arg-Gly-Asp-Ser (RGD) covalently conjugated to the polyurea backbone in 30/70 scaffold resulted in significantly increased clotting times. Reducing surface thrombogenicity by the conjugation of RGD is critical to avoiding intimal hyperplasia. Hence, biomechanical and biochemical properties of a vascular graft can be balanced by optimizing synthesis parameters and constituent components. For these reasons, the optimized RGD-conjugated 30/70 scaffold electrospun at 2.5 or 5 mL/h has great potential as a suitable material for vascular grafting applications. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 278-290, 2018.
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Affiliation(s)
- Krishna Madhavan
- Department of Bioengineering, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
- Cardiovascular Pulmonary Group, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Maria G. Frid
- Department of Pediatrics, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
- Cardiovascular Pulmonary Group, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Kendall Hunter
- Department of Bioengineering, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
- Cardiovascular Pulmonary Group, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Robin Shandas
- Department of Bioengineering, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
- Department of Pediatrics, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
- Department of Surgery, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
- Cardiovascular Pulmonary Group, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Kurt R. Stenmark
- Department of Pediatrics, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
- Cardiovascular Pulmonary Group, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Daewon Park
- Department of Bioengineering, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, 80045, USA
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16
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Sakti S, Khusnah N, Santjojo D, Masruroh, Sabarudin A. Surface Modification of Polystyrene Coating on QCM Sensor using Ambient Air Plasma at Low Pressure. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.matpr.2018.04.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Diban N, Sánchez-González S, Lázaro-Díez M, Ramos-Vivas J, Urtiaga A. Facile fabrication of poly(ε-caprolactone)/graphene oxide membranes for bioreactors in tissue engineering. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.06.052] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Suwanprateeb J, Thammarakcharoen F, Hobang N. Enhancement of mechanical properties of 3D printed hydroxyapatite by combined low and high molecular weight polycaprolactone sequential infiltration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:171. [PMID: 27704375 DOI: 10.1007/s10856-016-5784-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 09/21/2016] [Indexed: 06/06/2023]
Abstract
A new infiltration technique using a combination of low and high molecular weight polycaprolactone (PCL) in sequence was developed as a mean to improve the mechanical properties of three dimensional printed hydroxyapatite (HA). It was observed that using either high (M n~80,000) or low (M n~10,000) molecular weight infiltration could only increase the flexural modulus compared to non-infiltrated HA, but did not affect strength, strain at break and energy at break. In contrast, a combination of low and high molecular infiltration in sequence increased the flexural modulus, strength and energy at break compared to those of non-infiltrated HA or infiltrated by high or low molecular weight PCL alone. This overall enhancement was found to be attributed to the densification of low molecular weight PCL and the reinforcement of high molecular PCL concurrently. The combined low and high molecular weight infiltration in sequence also maintained high osteoblast proliferation and differentiation of the composites at the similar level of the HA. Densification was a dominant mechanism for the change in modulus with porosity and density of the infiltrated HA/PCL composites. However, both densification and the reinforcing performance of the infiltration phase were crucial for strength and toughening enhancement of the composites possibly by the defect healing and stress shielding mechanisms. The sequence of using low molecular weight infiltration and followed by high molecular infiltration was seen to provide the greatest flexural properties and highest cells proliferation and differentiation capabilities.
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Affiliation(s)
- Jintamai Suwanprateeb
- National Metal and Materials Technology Center (MTEC), 114 Paholyothin Road, Klong 1, Klongluang, Pathumthani, 12120, Thailand.
| | - Faungchat Thammarakcharoen
- National Metal and Materials Technology Center (MTEC), 114 Paholyothin Road, Klong 1, Klongluang, Pathumthani, 12120, Thailand
| | - Nattapat Hobang
- National Metal and Materials Technology Center (MTEC), 114 Paholyothin Road, Klong 1, Klongluang, Pathumthani, 12120, Thailand
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Dettin M, Zamuner A, Roso M, Iucci G, Samouillan V, Danesin R, Modesti M, Conconi MT. Facile and selective covalent grafting of an RGD-peptide to electrospun scaffolds improves HUVEC adhesion. J Pept Sci 2015; 21:786-95. [DOI: 10.1002/psc.2808] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/31/2015] [Accepted: 08/10/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Monica Dettin
- Department of Industrial Engineering; University of Padova; Padova Italy
| | - Annj Zamuner
- Department of Industrial Engineering; University of Padova; Padova Italy
| | - Martina Roso
- Department of Industrial Engineering; University of Padova; Padova Italy
| | | | - Valerie Samouillan
- Inter-university Centre for Materials Research and Engineering; University Toulouse-Paul Sabatier; Toulouse France
| | - Roberta Danesin
- Department of Industrial Engineering; University of Padova; Padova Italy
| | - Michele Modesti
- Department of Industrial Engineering; University of Padova; Padova Italy
| | - Maria Teresa Conconi
- Department of Pharmaceutical and Pharmacological Sciences; University of Padova; Padova Italy
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Nottrodt N, Leonhäuser D, Bongard Y, Bremus-Köbberling E, Gillner A. Local ultraviolet laser irradiation for gradients on biocompatible polymer surfaces. J Biomed Mater Res A 2013; 102:999-1007. [DOI: 10.1002/jbm.a.34762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 03/28/2013] [Accepted: 04/17/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Nadine Nottrodt
- Biotechnology and Laser Therapy; Fraunhofer Institute for Laser Technology, Steinbachstrasse 15; 52074 Aachen Germany
| | - Dorothea Leonhäuser
- Biotechnology and Laser Therapy; Fraunhofer Institute for Laser Technology, Steinbachstrasse 15; 52074 Aachen Germany
| | - Yvonne Bongard
- Biotechnology and Laser Therapy; Fraunhofer Institute for Laser Technology, Steinbachstrasse 15; 52074 Aachen Germany
| | - Elke Bremus-Köbberling
- Biotechnology and Laser Therapy; Fraunhofer Institute for Laser Technology, Steinbachstrasse 15; 52074 Aachen Germany
| | - Arnold Gillner
- Biotechnology and Laser Therapy; Fraunhofer Institute for Laser Technology, Steinbachstrasse 15; 52074 Aachen Germany
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