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Boularaoui S, Al Hussein G, Khan KA, Christoforou N, Stefanini C. An overview of extrusion-based bioprinting with a focus on induced shear stress and its effect on cell viability. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.bprint.2020.e00093] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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52
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Andrgie AT, Darge HF, Mekonnen TW, Birhan YS, Hanurry EY, Chou HY, Wang CF, Tsai HC, Yang JM, Chang YH. Ibuprofen-Loaded Heparin Modified Thermosensitive Hydrogel for Inhibiting Excessive Inflammation and Promoting Wound Healing. Polymers (Basel) 2020; 12:E2619. [PMID: 33172099 PMCID: PMC7694755 DOI: 10.3390/polym12112619] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/30/2020] [Accepted: 11/04/2020] [Indexed: 12/20/2022] Open
Abstract
Hydrogels have been investigated as ideal biomaterials for wound treatment owing to their ability to form a highly moist environment which accelerates cell migration and tissue regeneration for prompt wound healing. They can also be used as a drug carrier for local delivery, and are able to activate immune cells to enhance wound healing. Here, we developed heparin-conjugated poly(N-isopropylacrylamide), an injectable, in situ gel-forming polymer, and evaluated its use in wound healing. Ibuprofen was encapsulated into the hydrogel to help reduce pain and excessive inflammation during healing. In addition to in vitro studies, a BALB/c mice model was used to evaluate its effect on would healing and the secretion of inflammatory mediators. The in vitro assay confirmed that the ibuprofen released from the hydrogel dramatically reduced lipopolysaccharide-induced inflammation by suppressing the production of NO, PGE2 and TNF-α in RAW264.7 macrophages. Moreover, an in vivo wound healing assay was conducted by applying hydrogels to wounds on the backs of mice. The results showed that the ibuprofen-loaded hydrogel improved healing relative to the phosphate buffered saline group. This study indicates that ibuprofen loaded in an injectable hydrogel is a promising candidate for wound healing therapy.
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Affiliation(s)
- Abegaz Tizazu Andrgie
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (A.T.A.); (H.F.D.); (T.W.M.); (Y.S.B.); (E.Y.H.); (H.-Y.C.); (C.-F.W.)
| | - Haile Fentahun Darge
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (A.T.A.); (H.F.D.); (T.W.M.); (Y.S.B.); (E.Y.H.); (H.-Y.C.); (C.-F.W.)
| | - Tefera Worku Mekonnen
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (A.T.A.); (H.F.D.); (T.W.M.); (Y.S.B.); (E.Y.H.); (H.-Y.C.); (C.-F.W.)
| | - Yihenew Simegniew Birhan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (A.T.A.); (H.F.D.); (T.W.M.); (Y.S.B.); (E.Y.H.); (H.-Y.C.); (C.-F.W.)
| | - Endiries Yibru Hanurry
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (A.T.A.); (H.F.D.); (T.W.M.); (Y.S.B.); (E.Y.H.); (H.-Y.C.); (C.-F.W.)
| | - Hsiao-Ying Chou
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (A.T.A.); (H.F.D.); (T.W.M.); (Y.S.B.); (E.Y.H.); (H.-Y.C.); (C.-F.W.)
| | - Chih-Feng Wang
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (A.T.A.); (H.F.D.); (T.W.M.); (Y.S.B.); (E.Y.H.); (H.-Y.C.); (C.-F.W.)
- Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Hsieh-Chih Tsai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan; (A.T.A.); (H.F.D.); (T.W.M.); (Y.S.B.); (E.Y.H.); (H.-Y.C.); (C.-F.W.)
- Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Jen Ming Yang
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 320-338, Taiwan;
- Department of General Dentistry, Chang Gung Memorial Hospital, Taoyuan 320-338, Taiwan
| | - Yen-Hsiang Chang
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 320-338, Taiwan;
- Department of General Dentistry, Chang Gung Memorial Hospital, Taoyuan 320-338, Taiwan
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Panyamao P, Ruksiriwanich W, Sirisa-ard P, Charumanee S. Injectable Thermosensitive Chitosan/Pullulan-Based Hydrogels with Improved Mechanical Properties and Swelling Capacity. Polymers (Basel) 2020; 12:E2514. [PMID: 33126695 PMCID: PMC7692642 DOI: 10.3390/polym12112514] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/18/2020] [Accepted: 10/26/2020] [Indexed: 12/12/2022] Open
Abstract
Thermosensitive chitosan/β-glycerophosphate (CS/BGP) systems have been developed as injectable hydrogels. However, the hydrogels exhibited poor mechanical properties due to their physically crosslinked networks. In this work, CS/BGP hydrogels were reinforced by covalent crosslinking using genipin (GE) and concomitantly semi-interpenetrating networks using pullulan (PL). Based on response surface methodology, the optimized formulation was composed of CS (1.05%, w/v), PL (1%, w/v), BGP (6%, w/v), and GE (70.79 mcg/mL). The optimized hydrogels exhibited Young's modulus of 92.65 ± 4.13 kPa and a percentage of equilibrium swelling ratio of 3259.09% ± 58.90%. Scanning electron micrographs revealed a highly porous structure with nanofibrous networks in the CS/PL/BGP/GE hydrogels. The chemical interactions between the compositions were investigated by Fourier-transform infrared spectroscopy. Rheological measurements illustrated that the optimized hydrogels displayed sol-gel transition within one minute at 37 °C, a lower critical solution temperature of about 31 °C, and viscoelastic behavior with high storage modulus. Furthermore, the optimized hydrogels demonstrated higher resistance to in vitro enzymatic degradation, compared to the hydrogels without GE. Our findings could suggest that the thermosensitive CS/PL/BGP/GE hydrogels with enhanced mechanical properties and swelling capacity demonstrate the potential for use as scaffolds and carriers for cartilage tissue engineering and drug delivery applications.
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Affiliation(s)
- Prakasit Panyamao
- Department of Pharmaceutical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (P.P.); (W.R.); (P.S.-a.)
| | - Warintorn Ruksiriwanich
- Department of Pharmaceutical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (P.P.); (W.R.); (P.S.-a.)
- Cluster of Research and Development of Pharmaceutical and Natural Products Innovation for Human or Animal, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Panee Sirisa-ard
- Department of Pharmaceutical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (P.P.); (W.R.); (P.S.-a.)
| | - Suporn Charumanee
- Department of Pharmaceutical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (P.P.); (W.R.); (P.S.-a.)
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Thermosensitive hydrogels for local delivery of 5-fluorouracil as neoadjuvant or adjuvant therapy in colorectal cancer. Eur J Pharm Biopharm 2020; 157:154-164. [PMID: 33222768 DOI: 10.1016/j.ejpb.2020.10.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/01/2020] [Accepted: 10/19/2020] [Indexed: 12/18/2022]
Abstract
Spurred by high risk for local tumor recurrence and non-specific toxicity of systemic chemotherapy, clinicians have recently granted a growing interest to locoregional therapeutic strategies. In this perspective, we recently developed a multipurpose thermosensitive hydrogel based on reversible thermogelling properties of poloxamers P407 and P188, a bioadhesive excipient and antineoplastic effect of 5-fluorouracil (5-FU) for the local treatment of colorectal cancer (CRC) in ectopic CT26 murine models. Antitumor efficacy was assessed in mice following intratumoral (IT) injection mimicking neoadjuvant therapy and subcutaneous (SC) application after tumor excision simulating adjuvant therapy. Rheological characterization disclosed that P407/P188/alginate 20/2/1% w/v thermosensitive hydrogel is an injectable free-flowing solution at ambient temperature that undergoes a SOL-GEL transition at 26.0 °C ± 0.6 °C and thereby forms in situ a non-flowing gel at physiological temperature. The generated gel presented an elastic behavior and responded according to a shear-thinning fluid upon shear rate. Although delayed by the addition of alginate 1% w/v, 5-FU is released mainly by diffusion mechanism. The local delivery of 5-FU from P407/P188/alginate/5-FU 20/2/1/0.5% w/v hydrogel in the preclinical tumor models led to a significant tumor growth delay. These results demonstrated that poloxamer-based thermosensitive hydrogels provide a simple and efficient means for local chemotherapeutics delivery.
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Erceg T, Dapčević-Hadnađev T, Hadnađev M, Ristić I. Swelling kinetics and rheological behaviour of microwave synthesized poly(acrylamide-co-acrylic acid) hydrogels. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04763-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Veiled Extra Virgin Olive Oils: Role of Emulsion, Water and Antioxidants. COLLOIDS AND INTERFACES 2020. [DOI: 10.3390/colloids4030038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review traces the current knowledge on the effects of various factors and phenomena that occur at interface, and the role of dispersed phase on the physicochemical, sensorial and nutritional characteristics of veiled extra virgin olive oil (VVOO). Since 1994 there have been numerous articles in the literature regarding the peculiar characteristic of unfiltered olive oil, so-called veiled or cloud virgin olive oil. It is a colloidal system (emulsion–sol), where the continuous lipidic phase dispreads mini droplets of milling water, fragments of cells and biotic fraction obtained from oil processing. During storage, the dispersed phase collapses and determines the quality of the virgin olive oil (VOO). The observed phenomena lead to worsening the quality of the product by causing defects such as oxidation of phenols, triacylglycerols hydrolysis and off-flavor formation. The addition of bioactive compounds, such as vitamins, on product based on VVOO, must take into account the eventual synergistic effect of individual substances. The role of the interphase is crucial to the synergic activity of bioactive molecules in improving oxidative stability, sensorial and health characteristics of VVOO.
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Kopač T, Ručigaj A, Krajnc M. The mutual effect of the crosslinker and biopolymer concentration on the desired hydrogel properties. Int J Biol Macromol 2020; 159:557-569. [DOI: 10.1016/j.ijbiomac.2020.05.088] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/05/2020] [Accepted: 05/13/2020] [Indexed: 01/17/2023]
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Sedaghat Doost A, Nikbakht Nasrabadi M, Kassozi V, Nakisozi H, Van der Meeren P. Recent advances in food colloidal delivery systems for essential oils and their main components. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.03.037] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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60
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Engineering approaches for drug delivery systems production and characterization. Int J Pharm 2020; 581:119267. [DOI: 10.1016/j.ijpharm.2020.119267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 12/17/2022]
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D'Elía NL, Rial Silva R, Sartuqui J, Ercoli D, Ruso J, Messina P, Mestres G. Development and characterisation of bilayered periosteum-inspired composite membranes based on sodium alginate-hydroxyapatite nanoparticles. J Colloid Interface Sci 2020; 572:408-420. [PMID: 32272315 DOI: 10.1016/j.jcis.2020.03.086] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/10/2020] [Accepted: 03/23/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM Membranes for guided bone regeneration should have a mechanical structure and a chemical composition suitable for mimicking biological structures. In this work, we pursue the development of periosteum-inspired bilayered membranes obtained by crosslinking alginate with different amounts of nanohydroxyapatite. EXPERIMENTS Alginate-nanohydroxyapatite interaction was studied by rheology and infrared spectroscopy measurements. The membranes were characterized regarding their tensile strength, degradation and surface morphology. Finally, cell cultures were performed on each side of the membranes. FINDINGS The ionic bonding between alginate polysaccharide networks and nanohydroxyapatite was proven, and had a clear effect in the strength and microstructure of the hydrogels. Distinct surface characteristics were achieved on each side of the membranes, resulting in a highly porous fibrous side and a mineral-rich side with higher roughness and lower porosity. Moreover, the effect of amount of nanohydroxyapatite was reflected in a decrease of the membranes' plasticity and an increment of degradation rate. Finally, it was proved that osteoblast-like cells proliferated and differentiated on the mineral-rich side, specially when a higher amount of nanohydroxyapatite was used, whereas fibroblasts-like cells were able to proliferate on the fibrous side. These periosteum-inspired membranes are promising biomaterials for guided tissue regeneration applications.
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Affiliation(s)
- Noelia L D'Elía
- Department of Chemistry, Universidad Nacional del Sur, INQUISUR-CONICET, B8000CPB Bahía Blanca, Argentina.
| | - Ramon Rial Silva
- Soft Matter and Molecular Biophysics Group, Department of Applied Physics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Javier Sartuqui
- Department of Chemistry, Universidad Nacional del Sur, INQUISUR-CONICET, B8000CPB Bahía Blanca, Argentina.
| | - Daniel Ercoli
- Planta Piloto de Ingeniería Química - PLAPIQUI (UNS-CONICET), Camino La Carrindanga Km 7, 8000 Bahía Blanca, Argentina.
| | - Juan Ruso
- Soft Matter and Molecular Biophysics Group, Department of Applied Physics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Paula Messina
- Department of Chemistry, Universidad Nacional del Sur, INQUISUR-CONICET, B8000CPB Bahía Blanca, Argentina.
| | - Gemma Mestres
- Materials Science and Engineering, Science for Life Laboratory, Box 534, 751 21 Uppsala University, Uppsala, Sweden.
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Alginate Films Encapsulating Lemongrass Essential Oil as Affected by Spray Calcium Application. COLLOIDS AND INTERFACES 2019. [DOI: 10.3390/colloids3030058] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The necessity of producing innovative packaging systems has directed the attention of food industries towards the use of biodegradable polymers for developing new films able to protect foods and to extend their shelf-life, with lower environmental impact. In particular, edible films combining hydrophilic and hydrophobic ingredients could retard moisture loss, gas migration and ensure food integrity, reducing the necessity of using synthetic plastics. Alginate-based films obtained from emulsions of lemongrass essential oil (at 0.1% and 0.5%) in aqueous alginate solutions (1%), with Tween 80 as surfactant (0.3%), were obtained by casting and characterized as to microstructure and thermal behavior, as well as tensile, barrier and optical properties. Films were also crosslinked through spraying calcium chloride onto the film surface and the influence of oil emulsification and the crosslinking effect on the final film properties were evaluated. The film microstructure, analyzed through Field Emission Scanning Electron Microscopy (FESEM) revealed discontinuities in films containing essential oil associated with droplet flocculation and coalescence during drying, while calcium diffusion into the matrix was enhanced. The presence of essential oil reduced the film stiffness whereas calcium addition lowered the film’s water solubility, increasing tensile strength and reducing the extensibility coherent with its crosslinking effect.
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Quality Control of Fresh-Cut Apples after Coating Application. Foods 2019; 8:foods8060189. [PMID: 31159394 PMCID: PMC6617086 DOI: 10.3390/foods8060189] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 05/24/2019] [Accepted: 05/27/2019] [Indexed: 11/17/2022] Open
Abstract
The growing demand for ready-to-eat fresh fruits has led to set-up appropriate strategies for preserving fruit quality and freshness of such commodities. To slow down the deterioration events such as respiration, moisture loss and enzymatic activity, ready-to-eat products should be protected with an edible film. A suitable coating should combine hydrophilic and hydrophobic features to ensure good mechanical and gas barrier properties. Alginate/essential oil nanoformulations, one with low and the other with high oil content, here proposed to protect apple pieces during storage, were first characterized through dynamic light scattering and rheology. The effect of the application of the nanoformulations on the quality parameters of apples stored at 4 °C was considered by evaluating weight loss, pH and titratable acidity, total phenols content and the fruit appearance during storage. Mainly on the basis of pH and titratable acididty variation, the nanoformulation with low oil content resulted eligible for preserving the quality of fresh-cut apple pieces during storage.
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Schmidt BVKJ. Hydrophilic Polymers. Polymers (Basel) 2019; 11:polym11040693. [PMID: 30995756 PMCID: PMC6523788 DOI: 10.3390/polym11040693] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 04/15/2019] [Indexed: 12/30/2022] Open
Affiliation(s)
- Bernhard V K J Schmidt
- Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany.
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK.
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